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Опубліковано: 30 травня 2022
Оновлено: 31 травня 2022

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Статті в журналах з теми "Development of power grids"

1

Jiao, Bingqi, Zhicheng Xu, Kuan Zheng, Xiaoqing Yan, and Junshu Feng. "Evaluation method of clean power grid development mode." E3S Web of Conferences 236 (2021): 02002. http://dx.doi.org/10.1051/e3sconf/202123602002.

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Анотація:
In response to the climate change, it has been becoming the consensus of most countries in the world to accelerate the development of a high proportion of clean energy. The power grid is the core to support the development of a high proportion of clean energy, and the key is to accelerate the construction of clean power grids. This paper focuses on the main characteristics of clean power grid construction, and proposes a set of clean power grid development evaluation indicators including 5 first-level indicators and 19 second-level indicators and an analysis method based on radar charts. Taking China Power Grid as an example, this paper analyzes in detail the characteristics of the medium and long-term development mode of clean power grids and the relative change trends of specific indicators, and discusses the key links and potential problems that need attention in the development of clean power grids.
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2

Nagasaka, Ken. "Development and Current State of Smart Grids: A Review." Journal of Advanced Computational Intelligence and Intelligent Informatics 21, no. 1 (January 20, 2017): 49–58. http://dx.doi.org/10.20965/jaciii.2017.p0049.

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Анотація:
Smart grids are an important component of the modernization of the power industry worldwide. Many researchers have contributed to their development. At this point, reflection on whether smart grids are being used as was expected and where further investigation is necessary to make them more applicable to the future power industry is warranted. The aim of this paper is to introduce the state of research and path of development of smart grids worldwide. In this investigation, the primary objectives of smart grids, from their inception to the present with changes along the way, are also presented. In addition, difficulties and barriers in their development and implementation and whether these issues are being solved are discussed. Finally, the future and accompanying challenges of smart grids are presented. It should be noted that the current state and development of smart grids is a very deep topic, and it is not possible to mention all the relevant points in a single article. The present review paper attempts to address a limited portion of these to provide an essential understanding of smart grids. Regarding the communication base of a smart grid, only smart meters, some developed communication techniques and smart grid models are presented.
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3

Gea-Bermúdez, Juan, Lena Kitzing, Matti Koivisto, Kaushik Das, Juan Pablo Murcia León, and Poul Sørensen. "The Value of Sector Coupling for the Development of Offshore Power Grids." Energies 15, no. 3 (January 20, 2022): 747. http://dx.doi.org/10.3390/en15030747.

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Анотація:
Offshore grids can play key roles in the transition of energy systems toward sustainability. Although they require extensive infrastructure investments, they allow for the exploitation of additional resources and may be important in providing for part of the increasing electricity demands driven by sector coupling. This paper quantifies the socioeconomic value of offshore grids and identifies their major drivers, performing energy system optimization in a model application of the northern–central European energy system and the North Sea offshore grid towards 2050. The increasing wake loss with the sizes of hub-connected wind farms is integrated in the modeling. We find that without sector coupling no offshore grid may develop, and that the higher the level of sector coupling, the higher the value of offshore grids. Therefore, it can be strongly stated that offshore grid infrastructure development should not be discussed as a separate political topic, but seen in connection to sector coupling.
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4

Meinecke, Steffen, Leon Thurner, and Martin Braun. "Review of Steady-State Electric Power Distribution System Datasets." Energies 13, no. 18 (September 15, 2020): 4826. http://dx.doi.org/10.3390/en13184826.

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Анотація:
Publicly available grid datasets with electric steady-state equivalent circuit models are crucial for the development and comparison of a variety of power system simulation tools and algorithms. Such algorithms are essential to analyze and improve the integration of distributed energy resources (DERs) in electrical power systems. Increased penetration of DERs, new technologies, and changing regulatory frameworks require the continuous development of the grid infrastructure. As a result, the number and versatility of grid datasets, which are required in power system research, increases. Furthermore, the used grids are created by different methods and intentions. This paper gives orientation within these developments: First, a concise overview of well-known, publicly available grid datasets is provided. Second, background information on the compilation of the grid datasets, including different methods, intentions and data origins, is reviewed and characterized. Third, common terms to describe electric steady-state distribution grids, such as representative grid or benchmark grid, are assembled and reviewed. Recommendations for the use of these grid terms are made.
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5

Stognii, B. S., O. V. Kyrylenko, V. V. Pavlovsky, M. F. Sopel, A. O. Steliuk, and L. M. Lukianenko. "Development of Emergency System of Power Grids with a Significant Renewable Generation." Science and innovation 12, no. 4 (September 21, 2016): 22–26. http://dx.doi.org/10.15407/scine12.04.022.

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6

Olajuyin, E. A., and Olubakinde Eniola. "MICROGRID IN POWER DISTRIBUTION SYSTEM." International Journal of Research -GRANTHAALAYAH 7, no. 8 (July 23, 2020): 387–93. http://dx.doi.org/10.29121/granthaalayah.v7.i8.2019.687.

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Анотація:
Power is a very important instrument to the development of economy of a nation and it must be stable and available and to meet the demand of the consumers at all times. The quest for power supply has introduced a new technology called microgrid. Micro grids are regarded as small power systems that confine electric energy generating facilities, from both renewable energy sources and conventional synchronous. Generators, and customer loads with respect to produced electric energy. It can be connected to grid or operate in islanding mode. On the other hand, the grid’s dynamics and its stability rely on the amount of stored energy in the micro grid. In a conventional power system with a large number of synchronous generators as the main sources of energy, the mechanical energy in the generators’ rotors, in the form of kinetic energy, serves as the stored energy and feeds the grids in the event of any drastic load changes or if disturbances occur. Microgrid is an alternative idea to support the grid, it can be applied in a street, estates, community or a locality (towns and villages), organizations and establishments. Load forecasting can be further extended to Organizations, Local Government, State and country to determine the energy consumption.
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7

Salkuti, Surender Reddy. "Challenges, issues and opportunities for the development of smart grid." International Journal of Electrical and Computer Engineering (IJECE) 10, no. 2 (April 1, 2020): 1179. http://dx.doi.org/10.11591/ijece.v10i2.pp1179-1186.

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Анотація:
The development smart grids have made the power systems planning and operation more efficient by the application of renewable energy resources, electric vehicles, two-way communication, self-healing, consumer engagement, distribution intelligence, etc. The objective of this paper is to present a detailed comprehensive review of challenges, issues and opportunities for the development of smart grid. Smart grids are transforming the traditional way of meeting the electricity demand and providing the way towards an environmentally friendly, reliable and resilient power grid. This paper presents various challenges of smart grid development including interoperability, network communications, demand response, energy storage and distribution grid management. This paper also reviews various issues associated with the development of smart grid. Local, regional, national and global opportunities for the development of smart grid are also reported in this paper.
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8

An, Lei, Xinyi Lan, Mianbin Wang, and Jinchao Li. "Research on power grid effective assets input-output evaluation based on super-efficient DEA model." E3S Web of Conferences 118 (2019): 01054. http://dx.doi.org/10.1051/e3sconf/201911801054.

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Анотація:
With the deepening of power system reform, the precise investment and lean development of power grids have become the focus of power grid enterprises. It is of great significance to carry out evaluation research on the efficiency of input and output of effective assets of power grids. Based on the analysis of the status quo of effective asset evaluation in China’s power grid, this paper combines the model of super-efficient DEA with the analysis of effective asset output efficiency of power grid to construct an evaluation system of effective asset input and output efficiency of power grids, and takes the national power grid as an example for calculation and analysis. This paper objectively evaluates the internal and external factors affecting the efficiency of the effective assets of the grid, and provides quantitative analysis support for the effective asset investment decision of the grid.
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9

Huang, Yuansheng, Lei Yang, Shijian Liu, and Guangli Wang. "Cooperation between Two Micro-Grids Considering Power Exchange: An Optimal Sizing Approach Based on Collaborative Operation." Sustainability 10, no. 11 (November 14, 2018): 4198. http://dx.doi.org/10.3390/su10114198.

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Анотація:
Optimal sizing of single micro-grid faces problems such as high life cycle cost, low self-consumption of power generated by renewable energy, and disturbances of intermittent renewable energy. Interconnecting single micro-grids as a cooperative system to reach a proper size of renewable energy generations and batteries is a credible method to promote performance in reliability and economy. However, to guarantee the optimal collaborative sizing of two micro-grids is a challenging task, particularly with power exchange. In this paper, the optimal sizing of economic and collaborative for two micro-grids and the tie line is modelled as a unit commitment problem to express the influence of power exchange between micro-grids on each life cycle cost, meanwhile guaranteeing certain degree of power supply reliability, which is calculated by Loss of Power Supply Probability in the simulation. A specified collaborative operation of power exchange between two micro-grids is constructed as the scheduling scheme to optimize the life cycle cost of two micro-grids using genetic algorithm. The case study verifies the validity of the method proposed and reveal the advantages of power exchange in the two micro-grids system. The results demonstrate that the proposed optimal sizing means based on collaborative operation can minimize the life cycle cost of two micro-grids respectively considering different renewable energy sources. Compared to the sizing of single micro-grid, the suggested method can not only improve the economic performance for each micro-grid but also form a strong support between interconnected micro-grids. In addition, a proper price of power exchanges will balance the cost saving between micro-grids, making the corresponding stake-holders prefer to be interconnected.
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10

Srikanth, T., A. S. Kannan, and B. M. Chandra. "Power Quality Enhancement with Involvement of RES and Power Converters in Micro Grids using Metaheuristic Algorithms: A Literature Review." Asian Journal of Electrical Sciences 9, no. 2 (May 30, 2021): 25–30. http://dx.doi.org/10.51983/ajes-2020.9.2.2553.

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Анотація:
Micro Grids are going to replace the traditional concept of electrical networks in order to satisfy the increasing needs in terms of flexibility, accessibility, reliability, and quality of the power supply. Economy and energy efficiency are the paradigms followed to exploit the available distributed energy resources (DERs), guaranteeing technical and environment-friendly standards. Obviously, the path to Micro Grids is complicated by the increasing heterogeneity of Micro Grid components, such as renewable, storage systems, fossil- fueled generators, and controllable loads [1]. Fortunately, the synergic interaction between DERs and information and communication technologies (ICT) foster the coordination among different infrastructures, promoting the development of Smart Grids at both theoretical and practical levels. The major highlights of utilizing micro grid are the capacity to self-heal from power quality (PQ) issues, efficient energy management, incorporation of automation based on ICT and smart metering, integration of distributed power generation, renewable energy resources, and storage units [2]. The advantages contribute to maintain good PQ and to maintain the reliability. In this regard, the concept of micro grid is brought to the stage as one of the main building blocks of the future smart grids [3].
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Більше джерел

Дисертації з теми "Development of power grids"

1

Keskin, Müge. "Smart Grids and Turkey: An Overview of the Current Power System and Smart Grid Development." Thesis, Uppsala universitet, CEMUS, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-438553.

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Анотація:
Successful integration of the smart grids is crucial for ensuring the efficiency, resiliency, and sustainability of future power systems. With a 46.53% increase in total primary energy supply between 2008 and 2018 (IEA, 2020a), Turkey has the fastest-growing energy market within OECD countries (Erdin and Ozkaya, 2019).Though, Turkey’s current electrical grid faces many challenges; such as high loss rates from the transmission and distribution lines (Damar, 2016; Düzgün, 2018; IBRD/The World Bank, 2016; TEİAŞ, 2019), frequent power outages (Guner and Ozdemir, 2011; Öztürk, 2017; Yanılmaz, 2016) and several incidents of large-scale blackouts (OECD/IEA, 2016; Project Group Turkey, 2015). Smart grid technologies can address Turkey’s power system’s challenges with a holistic approach, as the smart grid does not have a strict definition yet but has distinctive characteristics. This paper provides an overview of Turkey’s current electric power system’s challenges while analyzing Turkey’s progress up to the present day towards the smart grid transition. Also, in order to summarize fundamental smart grid technologies globally, a smart grid framework was designed. Founded upon the framework; Turkey’s previous actions for its power system development were assessed from the smart grid perspective, and further steps were proposed to accomplish a successful smart grid transition. Country-specific remarks regarding the electrical grid were highlighted, such as the risk of terrorism, high seismic activity in the region, and emerging nuclear power in the country. As a result, it is concluded that Turkey has initiated the process towards the smart grid transition not only to achieve a “smart grid ideal” but mainly to meet its growing energy demands. Furthermore, it is also concluded that if the smart grid technologies’ scope could be extended throughout the country, Turkey would overcome the challenges with its power system in short to medium-term.
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2

Martinez, Parrondo Yago. "Smart Meters : Basic Elements in the Development of Smart Grids." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for elkraftteknikk, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-13630.

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Анотація:
The necessity of a revolution in the electrical system is obvious, and smart meters will be the solution. The development of smart grids will be built over the new electronic measuring devices, which imply a challenge for the next few years in the engineering field.In order to understand the basics of smart grids, we have carried a description and comparison of both the current and the next-gen electrical systems. Emphasizing the advantages and opportunities obtained by changing into the smart grids, it demonstrates the importance of moving towards a more modern measurement system.A very important issue is to decide which should be the minimum features in Smart Meters, therefore this thesis analyzes the different exiting models and also proposes several suggestions for the future. Finally, it was conducted a report of the current deployment situation of this new technology in various representative countries. Describing the settings and options chosen by each country, we can achieve a conclusion that unifies a standard solution by the choice of the best proposals.
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3

Wong, Mau-yee, and 黃漫宜. "Stakeholders' perspectives on smart grid policy development in Hong Kong." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hdl.handle.net/10722/194552.

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Анотація:
Achieving a low carbon economy has been the focus of Hong Kong in recent years. Strategies are put forth to support sustainable energy, because Hong Kong has inadequate local and renewable energy reserves. Smart grid technologies have benefited many countries in the world, and countries such as the United States, the United Kingdom, China, and South Korea are exploring this new green energy strategy. Hong Kong’s power companies have considered smart grid technologies, conducting pilot projects to test their local feasibility. In this research, stakeholders’ perspectives of the current status of smart grids are overviewed in Hong Kong from the angle of policy aspect. Stakeholder theory is utilized as the framework for understanding and analyzing the perceptions of stakeholder groups. An integrated and modified stakeholder power-interest matrix was developed for analyzing level of power and interest of stakeholder groups on smart grid from policy dimension. Through the course of this research project, qualitative interviews were conducted for 11 interviewees with subjectsfrom1six stakeholder groups, including: academics, advisory bodies, business, government, non-governmental organizations, and power companies. Follow-up quantitative questionnaires were distributed to the same target group for stakeholder analysis and to map the level of power and interest of stakeholder groups regarding smart grid policy development in Hong Kong. The data collected from interviews were compared with and contrasted against each stakeholder groups and other countries, with a view to identifying common motivations, barriers, and policy suggestions. The findings reveal that the six stakeholder groups hold medium to high power and interest in smart grid policy development in Hong Kong. Common motivations identified by local stakeholder groups include: the right to choose their own energy mix for power generation, potential behavioural change via smart meter and tariff restructuring, possible energy savings and emissions reductions for the environment, and corporate social responsibility. The most significant motivation for smart grid development shared with other countries is the goal of achieving low carbon economy and energy efficiency. Shared barriers perceived by the six stakeholder groups are: unreliable renewable power supplies, significant capital investments required, impracticalities of supplying electricity back to the grid, transfers of additional power generation costs to consumers, and limited smart grid knowledge by the public. The most significant barrier shared with international countries is funding mechanism, yet it may be difficult for Hong Kong to secure funding from the government because of problems of trust. Three stages of recommendations are suggested. Short-term recommendations centre on the policy development direction of smart grid in Hong Kong, and include implementing dynamic pricing, undertaking a large-scale pilot program and establishing an awareness campaign (funded by the government)for educating the general public. Medium-term recommendation is to establish a joint green fund with the contributions of companies with large carbon footprints. Long-term recommendations include market liberalization and increases in market competition.
published_or_final_version
Environmental Management
Master
Master of Science in Environmental Management
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4

Bottura, Riccardo <1986&gt. "Modelling and analysis of networked control strategies in smart power distribution grids: development of co-simulation tools." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amsdottorato.unibo.it/7062/.

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Анотація:
This thesis is focused on Smart Grid applications in medium voltage distribution networks. For the development of new applications it appears useful the availability of simulation tools able to model dynamic behavior of both the power system and the communication network. Such a co-simulation environment would allow the assessment of the feasibility of using a given network technology to support communication-based Smart Grid control schemes on an existing segment of the electrical grid and to determine the range of control schemes that different communications technologies can support. For this reason, is presented a co-simulation platform that has been built by linking the Electromagnetic Transients Program Simulator (EMTP v3.0) with a Telecommunication Network Simulator (OPNET-Riverbed v18.0). The simulator is used to design and analyze a coordinate use of Distributed Energy Resources (DERs) for the voltage/var control (VVC) in distribution network. This thesis is focused control structure based on the use of phase measurement units (PMUs). In order to limit the required reinforcements of the communication infrastructures currently adopted by Distribution Network Operators (DNOs), the study is focused on leader-less MAS schemes that do not assign special coordinating rules to specific agents. Leader-less MAS are expected to produce more uniform communication traffic than centralized approaches that include a moderator agent. Moreover, leader-less MAS are expected to be less affected by limitations and constraint of some communication links. The developed co-simulator has allowed the definition of specific countermeasures against the limitations of the communication network, with particular reference to the latency and loss and information, for both the case of wired and wireless communication networks. Moreover, the co-simulation platform has bee also coupled with a mobility simulator in order to study specific countermeasures against the negative effects on the medium voltage/current distribution network caused by the concurrent connection of electric vehicles.
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5

Amaripadath, Deepak. "Development of Tools for Accurate Study of Supraharmonic Emissions in Smart Grids." Thesis, Bourgogne Franche-Comté, 2019. http://www.theses.fr/2019UBFCA016.

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Анотація:
Alors que la préoccupation mondiale pour le changement climatique et ses effets se multiplient, les gouvernements sont forcés de prendre des décisions fermes en faveur de la mise en place des réseaux électriques intelligents. Toutefois, le succès de ces actions dépend fortement de la satisfaction de certaines exigences du réseau électrique soulevées par la qualité de l’énergie fournie et les moyens de l’évaluer. Les réseaux électriques intelligents doivent relever les défis posés par l’utilisation croissante des sources d’énergie renouvelables, telles que le photovoltaïque (PV), le vent, etc. et les équipements, tels que les onduleurs photovoltaïques (PVI), les chargeurs de véhicules électriques (EVC), etc. Cela introduit un environnement opérationnel de dynamique complexe pour le système de distribution. Les distorsions provenant d’équipement de nouvelle génération et de charge sont généralement plus importantes et moins régulières que celles dues à l’équipement de génération traditionnelle et de charge, rendant les mesures de puissance et d’énergie difficiles à effectuer.Dans ce contexte, la thèse vise à quantifier et reproduire les émissions supra-harmoniques pour des fréquences de 2 à 150 kHz. Par conséquent, la littérature existante sur les émissions supra-harmoniques pour des fréquences de 2 à 150 kHz est étudiée. Le système de mesure à 4 voies est conçu et mis en œuvre pour la mesure des composantes fondamentales et supra-harmoniques des formes d’onde de tension et de courant pour des fréquences de 2 à 150 kHz dans le réseau électrique. Les mesures sont effectuées dans la plateforme Concept Grid. La caractérisation des équipements individuels et les tests du réseau électrique sont effectués ici. Les formes d’onde acquises durant les campagnes de mesure sont traitées mathématiquement à l’aide de l’algorithme de transformation rapide de Fourier (FFT) et statistiquement à l’aide de l’algorithme d’analyse de variance (ANOVA). Le traitement mathématique et statistique des formes d’onde acquises permet de déterminer les effets individuels et les interactions des différents paramètres dans la génération des émissions supra-harmoniques dans le réseau électrique. Les différents paramètres, tels que les émissions primaires et secondaires, les effets de la longueur du câble, les effets de l’ajout soudain et l’enlèvement de l’équipement de charge sont également étudiés.La thèse décrit la conception de la plateforme complexe d’onde, qui peut être utilisée pour des essais en laboratoire et la caractérisation des analyseurs de qualité de puissance (PQA) pour des fréquences de 2 à 150 kHz. Dans les réseaux électriques, la plateforme d’onde peut être utilisée pour mesurer les émissions supra-harmoniques pour des fréquences de 2 à 150 kHz. L’architecture logicielle de la plateforme d’onde est décrite ici. De plus, le document explique la conception matérielle de la plateforme d’onde. Il comprend également les applications de la plateforme d’onde du laboratoire et du réseau électrique. La configuration au laboratoire pour la caractérisation du PQA et le schéma de mesure pour les formes d’onde du réseau électrique sont également représentés ici. Le bilan d’incertitude pour la plateforme d’onde est calculé en tenant compte des différents facteurs, tels que la longueur du câble, le bruit, etc., sont discutés dans la thèse. Enfin, le PQA est caractérisé dans des fréquences de 2 à 150 kHz par rapport à la plateforme d’onde pour des amplitudes d’émission variables
As the worldwide concern for the climate change and its effects are growing, the governments are forced to make strong decisions in favour of the implementation of the smart electrical grids. However, the success of these actions strongly depends on meeting the certain requirements of the electricity system raised by the quality of the energy supplied and the means to assess it. The smart electrical networks have to tackle the challenges raised by the increasing uptake of the renewable energy sources, such as the photovoltaic (PV), wind, etc. and the equipment, such as photovoltaic inverters (PVI), electric vehicle chargers (EVC), etc. This introduces a complex dynamic operating environment for the distribution system. The distortions coming from the new generation and load equipment are generally larger and less regular than those due to the traditional generation and load equipment, making the power and energy measurements difficult to perform.In this context, the thesis aims to quantify and reproduce the supraharmonic emissions in the frequency range of 2 to 150 kHz. Therefore, the existing literature on the supraharmonic emissions in the frequency range of 2 to 150 kHz is studied. The 4-channel measurement system is designed and implemented for the measurement of the fundamental and supraharmonic components of the voltage and current waveforms in the frequency range of 2 to 150 kHz in the electrical network. The measurements are carried out in the Concept Grid platform. The individual equipment characterization and electrical network tests are carried out here. The waveforms acquired during the measurement campaigns are processed mathematically using the fast Fourier transform (FFT) algorithm and statistically using the analysis of variance (ANOVA) algorithm. The mathematical and statistical processing of the acquired waveforms helps to determine the individual effects and interactions of the different parameters in the generation of the supraharmonic emissions in the electrical network. The various parameters, such as the primary and secondary emissions, effects of the cable length, effects of the sudden addition and removal of the load equipment are also studied.The thesis describes the design of the complex waveform platform, which can be used for the laboratory testing and the characterization of the power quality analyzers (PQA) in the frequency range of 2 to 150 kHz. In the electrical networks, the waveform platform can be used to measure the supraharmonic emissions in the frequency range of 2 to 150 kHz. The software architecture of the waveform platform is described here. In addition, the paper explains the hardware design of the waveform platform. It also includes the laboratory and electrical network applications of the waveform platform. The laboratory setup for the characterization of the PQA and the measurement schema for the electrical network waveforms are also depicted here. The uncertainty budget for the waveform platform is calculated considering the various factors, such as the cable length, noise, etc. are discussed in the thesis. Finally, the PQA is characterized in the frequency range of 2 to 150 kHz with respect to the waveform platform for varying emission amplitudes
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6

Tinarwo, Loyd. "Development of methodologies for deploying and implementing local & medium area broadband PLC networks in office and residential electric grids." Thesis, University of Fort Hare, 2008. http://hdl.handle.net/10353/83.

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Анотація:
The use of electrical networks for telecommunications has a long history. It has been known since the beginning of the twentieth century [Ahola03]. The idea of using electrical networks for broadband communications arose in the 1990s [Hrasnica et al 04]. Recent and growing research interest has indicated that PowerLine Communications (PLC) is the threshold for achieving broadband delivery particularly in very dispersed and low teledensity areas. Currently, there are numerous PLC trials and commercial deployments underway inside and outside South Africa. Nevertheless, these PLC deployments are very isolated, done without clear methodology and performance remains bound to the physical layout of the electrical network. Because of that high bandwidth broadband PLC systems are prone to poor performance and this in turn limits the acceptance and deployment of this emerging alternative broadband technology. Though, PLC technical challenges are being addressed, there has been little analysis and research work that is focused on the “Development of Methodologies for Deploying and Implementing Local & Medium Area Broadband Power Line in Residential and Office Electric Grids” that would lead to broadband PLC being adopted and be of greater use to non-broadband communities of South Africa. PLC is a term describing several different systems using electrical grid distribution wires for simultaneous distribution of data by superimposing an analog signal [Hrasnica et al 04]. The research proposed and presented broadband PLC methodologies for typical medium voltage and local voltage PLC networks. These methodologieswere implemented and experimented with in configurations which closely mirrored residential and office settings through laboratory and multibuilding experiments using commercial 2nd Generation Mitsubishi Electric PLC technology. Research results presented not only serve to provide insight into broadband PLC but also how it handled broadband applications (communications), competed and compared with other technologies such as Ethernet LAN. In combination with networking communication theories, the research explored and analyzed the extent of PLC in providing broadband communication to residential and office electric grids at the University Fort Hare, Computer Science Department.
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7

Adekola, Olawale Ibrahim. "Design and development of a smart inverter system." Thesis, Cape Peninsula University of Technology, 2015. http://hdl.handle.net/20.500.11838/2195.

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Анотація:
Thesis (MTech (Electrical, Electronic and Computer Engineering))--Cape Peninsula University of Technology, 2015.
The growing interest in the use of solar energy to mitigate climate change, reduction in the cost of PV system and other favourable factors have increased the penetration of the PV(Photovoltaic) systems in the market and increase in the worldwide energy supply. The main component in a DG is a smart inverter connected in a grid-tied mode which serves as a direct interface between the grid and the RES (Renewable Energy System). This research work presents a three phase grid-tied inverter with active and reactive power control capabilities for renewable energy sources (RES) and distributed generators (DG). The type of the inverter to be designed is a Voltage Source Inverter (VSI). The VSI is capable of supplying energy to the utility grid with a well regulated DC link at its input. The solution this project proposes is an implementation of the designed filter to effectively reduce the harmonics injected into the grid to an acceptable value according to standards and also an approach to control the real and reactive power output of the inverters to help solve the problems of instability and power quality of the distribution system. The design, modelling and simulation of the smart inverter system is performed in MATLAB/SIMULINK software environment. A 10 kW three-phase voltage source inverter system connected to the utility grid was considered for this research. Series of simulations for the grid-connected inverter (GCI) model was carried out using different step changes in active and reactive power references which was used to obtain the tracking response of the set power references. The effectiveness of the control system which was designed to track the set references and supply improved power quality with reduced current ripples has been verified from the simulation results obtained.
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Musoni, Nkusi Emmanuel. "Analysis of the effect of renewable generation on the power quality of the grid, modelling and analysis of harmonic and voltage distortion." Thesis, Cape Peninsula University of Technology, 2018. http://hdl.handle.net/20.500.11838/2805.

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Анотація:
Thesis (Master of Engineering in Electrical Engineering)--Cape Peninsula University of Technology, 2018.
As the electric energy demand grows, there is a significant increase in the penetration of renewable generation (RG) in the existing electrical grid network. Interconnecting of renewable generation technologies to an existing distribution system has proven to provide various benefits such as meeting the growing load demand and its contribution to energy system decarbonisation, long-term energy security and expansion of energy access to new energy consumers in the developing urban and rural areas. However, the aim of this thesis is to conduct a study on the impacts of renewable generation on the power quality of electrical grid. Therefore, this work aims at assessing the potential effects of Distributed Generation (DG) on the operation of electric power system by modelling of harmonics and voltage distortion. With different types of renewable generation available at present, it is believed that some designs contribute significantly to electrical network’s Power Quality (PQ). After the analysis of harmonic currents (chapter 6 and 7 of this thesis) introduced by renewable generation technologies, their negative impact on the power quality of the grid is seen to be apparent at point of connection (POC) but only within controlled limits. Analytical method for modeling of harmonic interactions between the grid and aggregated distributed generation technologies are investigated using DIgSILENT Power Factory software and the results obtained are discussed.
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9

Gupta, Gunjan. "An analysis and improvement of selected features of power quality of grid-tied alternative energy systems." Thesis, Cape Peninsula University of Technology, 2018. http://hdl.handle.net/20.500.11838/2696.

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Анотація:
Thesis (PhD (Electrical Engineering))--Cape Peninsula University of Technology, 2018.
Electrical energy can be easily used and converted to other forms of energy for various applications. Technological advancement increases the dependency on electricity to a great extent. Various internal and external factors are responsible for the bad quality of power in power systems. The performance of the system is greatly affected by the presence of harmonics, as well as voltage and frequency variations, which leads to the malfunctioning of the device and decline of power quality and supply at load side. The reactive power compensation is carried out for better power quality. The literature survey is done to find the best and efficient scheme for reactive power compensation and mitigation of various power quality problems. The devices which are used to measure various power quality factors are discussed. Various mitigating schemes are surveyed in order to compensate reactive power and to improve the power quality at the distribution end. The integration of the most widely used renewable energy, wind energy in the distribution system creates technical issues like stability of the grid, harmonic distortion, voltage regulation, active and reactive power compensation etc. which are restricted to IEC and IEEE standards. One of the topics this thesis addresses is regulation in the reactive power generated along with voltage regulation by using an effective power electronics device known as a STATCOM. The main power quality factors like overvoltage and voltage flickers are mitigated by establishing STATCOMs in small wind farms. The wind farms are equipped with three wind turbines. These three wind turbines found in the wind farm can be operated together or one after another with an introduced delay. A glitch in even a little piece of a power grid can result in loss of efficiency, income and at times even life. In this manner, it is basic to outline a system which can distinguish the faults of the power system and take a faster response to recover it back to required reactive power. Two devices STATCOM and D-STATCOM are used for this purpose in this thesis. The D-STATCOM circuit and operating principle are also discussed in thesis. Different topologies of D-STATCOM discussed with their benefits and shortcomings. The voltage, current and hybrid technologies of D-STATCOM are also discussed.
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10

Osama, Hassan Eltayeb Khalid. "Development of the Simulation Model for the CoSES Laboratory Test Microgrid in Modelica." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.

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Evolution of the traditional consumer in a power system to a prosumer has posed many problems in the traditional uni-directional grid. This evolution in the grid model has made it important to study the behaviour of microgrids. This thesis deals with the laboratory microgrid setup at the Munich School of Engineering, built to assist researchers in studying microgrids. The model is built in Dymola which is a tool for the OpenModelica language. Models for the different components were derived, suiting the purpose of this study. The equivalent parameters were derived from data sheets and other simulation programs such as PSCAD. The parameters were entered into the model grid and tested at steady state, firstly. This yielded satisfactory results that were similar to the reference results from MATPOWER power flow. Furthermore, fault conditions at several buses were simulated to observe the behaviour of the grid under these conditions. Recommendations for further developing this model to include more detailed models for components, such as power electronic converters, were made at the end of the thesis.
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Книги з теми "Development of power grids"

1

Smart and sustainable power systems: Operations, planning, and economics of insular electricity grids. Boca Raton: CRC Press/Taylor & Francis Group, 2015.

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2

World Bank. Operating and planning electricity grids with variable renewable generation: Review of emerging lessons from selected operational experiences and desktop studies. Washington, DC: World Bank, 2013.

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3

Connecting the country: Development of New Zealand's national grid, 1886-2007. Wellington, N.Z: Steele Roberts, 2008.

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4

Research, California Energy Commission Public Interest Energy. Integrating new and emerging technologies into the California smart grid infrastructure: A report on a smart grid for California : PIER final project report. [Sacramento, Calif.]: California Energy Commission, 2008.

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5

Zhongguo feng dian chan ye fa zhan xin zhan lüe yu feng dian fei bing wang li lun: New strategy for the development of the wind power industry in China and the wind power non-grid-connection theory. Beijing Shi: Hua xue gong ye chu ban she, 2006.

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6

Marwali, M., and Ali Keyhani. Smart power grids 2011. Berlin: Springer, 2012.

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7

Keyhani, Ali, and Muhammad Marwali, eds. Smart Power Grids 2011. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-21578-0.

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8

Smart grids. London: ISTE, 2012.

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9

Qoaider, Louy. Development of sustainable energy and water supply systems for off-grid remote communities in arid regions: Case study, New Kalabsha Village in Lake Nasser Region, Egypt. Aachen: Shaker, 2009.

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10

Development of sustainable energy and water supply systems for off-grid remote communities in arid regions: Case study, New Kalabsha Village in Lake Nasser Region, Egypt. Aachen: Shaker, 2009.

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Частини книг з теми "Development of power grids"

1

Brunekreeft, Gert, Marius Buchmann, Christian Dänekas, Xin Guo, Christoph Mayer, Marcus Merkel, Christian Rehtanz, et al. "China’s way from conventional power grids towards smart grids." In Regulatory Pathways For Smart Grid Development in China, 19–43. Wiesbaden: Springer Fachmedien Wiesbaden, 2015. http://dx.doi.org/10.1007/978-3-658-08463-9_3.

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2

Brunekreeft, Gert, Marius Buchmann, Christian Dänekas, Xin Guo, Christoph Mayer, Marcus Merkel, Christian Rehtanz, et al. "Germany’s way from conventional power grids towards smart grids." In Regulatory Pathways For Smart Grid Development in China, 45–78. Wiesbaden: Springer Fachmedien Wiesbaden, 2015. http://dx.doi.org/10.1007/978-3-658-08463-9_4.

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3

Li, Zhong, and Yan Li. "Understanding and Control of Power Grids." In Autonomous Systems: Developments and Trends, 49–58. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-24806-1_5.

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4

Robyns, Benoît, Bruno François, Gauthier Delille, and Christophe Saudemont. "Recent Developments in Energy Storage." In Energy Storage in Electric Power Grids, 17–53. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781119058724.ch2.

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5

Li, Fan, Martin Bradley, and Frederic Howell. "Online and Offline Stability Assessment Development at National Grid, UK." In Power Electronics and Power Systems, 161–79. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-67482-3_8.

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6

Langenberg, Nils, Thomas Krampert, and Matthias Heidemann. "Development of a Modular High-Power Test Circuit for Components of Future Direct Current Grids." In Lecture Notes in Electrical Engineering, 885–93. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-31680-8_86.

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7

Gyawali, Netra Pd. "Microhydro-Based Mini grid for Sustainable Development of Rural Communities: A Case Study of Nepal." In Sustainable Power Systems, 151–74. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-2230-2_8.

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8

Zhang, Guangxiao, Xiaoyang Tong, Jiale Fan, Wenwen Li, and Xiaolin Zhou. "A Self-adaptive Method for Identifying the Last Circuit Breakers in Hybrid AC/DC Power Grids." In Proceedings of 2020 International Top-Level Forum on Engineering Science and Technology Development Strategy and The 5th PURPLE MOUNTAIN FORUM (PMF2020), 882–91. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-9746-6_66.

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9

Wu, Shanshan, Guoqiang Ji, Qingyang Duan, Yuelong Jia, and Xiaotong Sun. "Development Strategy of Energy Internet Industry for Power Grid Enterprises." In Lecture Notes in Electrical Engineering, 1284–93. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-3250-4_165.

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10

Bhatnagar, Dhruv, Danielle Preziuso, and Rebecca O’Neil. "Power Generation from Tides and Waves." In The Palgrave Handbook of International Energy Economics, 195–212. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-86884-0_12.

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AbstractMarine renewable energy generated from ocean tides and waves has not yet reached wide spread deployment or full commercial availability on par with comparable sources. This handbook chapter describes the global development of marine renewable energy technology and the most promising commercialization pathways, including “blue economy” marine applications, competitiveness in new electric grid paradigms, and emerging economic models for renewable energy development.
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Тези доповідей конференцій з теми "Development of power grids"

1

Qiu, YuFeng, ChaoBo Dai, and Rui Jin. "Impact of power electronic device development on power grids." In 2016 28th International Symposium on Power Semiconductor Devices and ICs (ISPSD). IEEE, 2016. http://dx.doi.org/10.1109/ispsd.2016.7520766.

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2

Cowburn, J. "Smart metering/smart grids standards development." In IET Conference on Power in Unity: a Whole System Approach. Institution of Engineering and Technology, 2013. http://dx.doi.org/10.1049/ic.2013.0146.

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3

Hanif, Sarmad, Laurentiu Marinovici, Mitch Pelton, Trevor Hardy, and Thomas E. McDermott. "Simplified Transactive Distribution Grids for Bulk Power System Mechanism Development." In 2021 IEEE Power & Energy Society General Meeting (PESGM). IEEE, 2021. http://dx.doi.org/10.1109/pesgm46819.2021.9638030.

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4

Berezin, Andrey. "LONG-TERM DEVELOPMENT OF ELECTRIC POWER INDUSTRY USING SMART GRIDS." In 4th SGEM International Multidisciplinary Scientific Conferences on SOCIAL SCIENCES and ARTS Proceedings. STEF92 Technology, 2017. http://dx.doi.org/10.5593/sgemsocial2017/52/s19.022.

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5

Csinger, Andrew, and Douglas Matthews. "Dual use solar surfaces for local grids and net zero development." In 2020 IEEE Electric Power and Energy Conference (EPEC). IEEE, 2020. http://dx.doi.org/10.1109/epec48502.2020.9320016.

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6

Biller, M., J. Jaeger, I. Mladenovic, C. Schacherer, D. Wolter, and M. Stoetzel. "Protection systems in distribution grids with variable short-circuit conditions." In 13th International Conference on Development in Power System Protection 2016 (DPSP). Institution of Engineering and Technology, 2016. http://dx.doi.org/10.1049/cp.2016.0086.

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7

Li, Wei-ying, Hua Jin, Jun-hao Wang, and Tao Guo. "Development of Application System Based on GIS for Rural Power Grids." In 2009 International Conference on Industrial and Information Systems (IIS). IEEE, 2009. http://dx.doi.org/10.1109/iis.2009.101.

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Kurokawa, Kosuke, Norihiro Kawasaki, and Masakazu Ito. "Particularity of PV aggregations incorporating with the power grids - Development of a power router -." In 2009 34th IEEE Photovoltaic Specialists Conference (PVSC). IEEE, 2009. http://dx.doi.org/10.1109/pvsc.2009.5411399.

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9

Apostolov, A. P. "Requirements and Methods for Reducing Fault Clearing Times in Smart Grids." In 13th International Conference on Development in Power System Protection 2016 (DPSP). Institution of Engineering and Technology, 2016. http://dx.doi.org/10.1049/cp.2016.0058.

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10

Barghi-Nia, Saeedeh, and Frederic Sirois. "Development of stochastic models for assessing the impact of Electric Vehicles in distribution grids." In 2015 IEEE Power & Energy Society General Meeting. IEEE, 2015. http://dx.doi.org/10.1109/pesgm.2015.7286166.

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Звіти організацій з теми "Development of power grids"

1

MAITRA, ARINDAM, RAY LITWIN, Jason lai, and David Syracuse. Ultrafast Power Processor for Smart Grid Power Module Development. Office of Scientific and Technical Information (OSTI), December 2012. http://dx.doi.org/10.2172/1124624.

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2

Bower, Ward Isaac, Paul Heavener, Lisa Sena-Henderson, Darren Hammell, Mark Holveck, Carolyn David, Abbas Ali Akhil, and Sigifredo Gonzalez. Solar Energy Grid Integration Systems. Final Report of the Princeton Power Systems Development of the 100kW Demand Response Inverter. Office of Scientific and Technical Information (OSTI), January 2012. http://dx.doi.org/10.2172/1038162.

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3

Chakravorty, Ujjayant, and Martino Pelli. Electrification and development: Empirical evidence on the effect of electricity provision on household welfare. CIRANO, 2022. http://dx.doi.org/10.54932/soan1297.

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The effect of electrification on economic outcomes is a major new area of study in environment and development economics. Almost a billion people in the world do not have access to grid electricity. Providing them a grid connection will be costly and polluting as well, even if powered by cleaner fossil fuels such as natural gas, instead of coal. However, the economic benefits of electricity are not well understood. Some studies find large effects on economic development in the long run, while others find small or negligible impacts on households in the short run. These benefits may also depend on household characteristics such as credit constraints that prevent them from consuming power or investing in complimentary assets. This paper highlights the state of current knowledge on the costs and benefits of electrification by reviewing the recent empirical literature. We discuss the identification strategies employed and evaluate the effect of electrification on a variety of household-level outcomes such as income, employment and education.
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4

Stern, M., G. Duran, G. Fourer, K. Mackamul, W. Whalen, M. van Loo, and R. West. Development of a low-cost integrated 20-kW-AC solar tracking subarray for grid-connected PV power system applications. Final technical report. Office of Scientific and Technical Information (OSTI), June 1998. http://dx.doi.org/10.2172/656846.

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5

Bent, Russell W., Michael Chertkov, and Scott Backhaus. Optimization and control theory for smart (power) grids. Office of Scientific and Technical Information (OSTI), September 2011. http://dx.doi.org/10.2172/1092469.

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6

Dong Wei, Yan Lu, Mohsen Jafari, Paul Skare, and Kenneth Rohde. Protecting Intelligent Distributed Power Grids against Cyber Attacks. Office of Scientific and Technical Information (OSTI), December 2010. http://dx.doi.org/10.2172/1033753.

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Ross Baldick, Thekla Boutsika, Jin Hur, Manho Joung, Yin Wu, and Minqi Zhong. Reducing the Vulnerability of Electric Power Grids to Terrorist Attacks. Office of Scientific and Technical Information (OSTI), January 2009. http://dx.doi.org/10.2172/950426.

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8

Girigoudar, Kshitij. Linearized three-phase optimal power flow models for distribution grids. Office of Scientific and Technical Information (OSTI), August 2021. http://dx.doi.org/10.2172/1813820.

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9

Hirsch, Brian, Kari Burman, Carolyn Davidson, Michael Elchinger, R. Hardison, D. Karsiwulan, and B. Castermans. Sustainable Energy in Remote Indonesian Grids. Accelerating Project Development. Office of Scientific and Technical Information (OSTI), June 2015. http://dx.doi.org/10.2172/1215197.

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10

Sprague, John G. Optimal Scheduling of Time-Shiftable Electric Loads in Expeditionary Power Grids. Fort Belvoir, VA: Defense Technical Information Center, September 2015. http://dx.doi.org/10.21236/ad1009343.

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