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Littérature scientifique sur le sujet « Mini-hydro system »

Auteur : Grafiati

Publié le 9 mars 2023

Mis à jour le 10 mars 2023

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Articles de revues sur le sujet "Mini-hydro system"

Picciotti, E., F. S. Marzano, E. N. Anagnostou, J. Kalogiros, Y. Fessas, A. Volpi, V. Cazac et al. « Coupling X-band dual-polarized mini-radars and hydro-meteorological forecast models : the HYDRORAD project ». Natural Hazards and Earth System Sciences 13, n^o 5 (16 mai 2013) : 1229–41. http://dx.doi.org/10.5194/nhess-13-1229-2013.

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Abstract. Hydro-meteorological hazards like convective outbreaks leading to torrential rain and floods are among the most critical environmental issues world-wide. In that context weather radar observations have proven to be very useful in providing information on the spatial distribution of rainfall that can support early warning of floods. However, quantitative precipitation estimation by radar is subjected to many limitations and uncertainties. The use of dual-polarization at high frequency (i.e. X-band) has proven particularly useful for mitigating some of the limitation of operational systems, by exploiting the benefit of easiness to transport and deploy and the high spatial and temporal resolution achievable at small antenna sizes. New developments on X-band dual-polarization technology in recent years have received the interest of scientific and operational communities in these systems. New enterprises are focusing on the advancement of cost-efficient mini-radar network technology, based on high-frequency (mainly X-band) and low-power weather radar systems for weather monitoring and hydro-meteorological forecasting. Within the above context, the main objective of the HYDRORAD project was the development of an innovative \\mbox{integrated} decision support tool for weather monitoring and hydro-meteorological applications. The integrated system tool is based on a polarimetric X-band mini-radar network which is the core of the decision support tool, a novel radar products generator and a hydro-meteorological forecast modelling system that ingests mini-radar rainfall products to forecast precipitation and floods. The radar products generator includes algorithms for attenuation correction, hydrometeor classification, a vertical profile reflectivity correction, a new polarimetric rainfall estimators developed for mini-radar observations, and short-term nowcasting of convective cells. The hydro-meteorological modelling system includes the Mesoscale Model 5 (MM5) and the Army Corps of Engineers Hydrologic Engineering Center hydrologic and hydraulic modelling chain. The characteristics of this tool make it ideal to support flood monitoring and forecasting within urban environment and small-scale basins. Preliminary results, carried out during a field campaign in Moldova, showed that the mini-radar based hydro-meteorological forecasting system can constitute a suitable solution for local flood warning and civil flood protection applications.

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Mulyono, Mulyono, et Hanny J. Berchmans. « DESIGN AND SIMULATION OF WATER LEVEL MONITORING AND CONTROL SYSTEM IN MINI HYDRO POWER PLANT ». Proceedings of The Conference on Management and Engineering in Industry 1, n^o 1 (16 septembre 2019) : 13–16. http://dx.doi.org/10.33555/cmei.v1i1.14.

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In common mini hydro power plants in Indonesia, the control of water levels in intake, sand-trap and head pond is carried out manually. This conventional manual control system may cause damages of waterway and all its components due to overflow or transient flow of water during load shedding or black out of electricity grid. The damages eventually may increase cost of maintenance and increase the risk of waterway collapse or excessive water hammer in penstock pipe. This type of collapses often happen in many mini hydro power plants in Indonesia. The risk of damages can be reduced by installing water level control and monitoring system in all key water way components such as in intake, sand-trap and head pond. Some other mini hydro power plants have installed water level control and monitoring system. But the price of such control system is still very expensive and high operation and maintenance cost. Thus, this thesis work designs and simulates simple and inexpensive the water level control and monitoring system for a mini hydro power plant. In this thesis work, the design and simulation of the water level control and monitoring system are carried out by a simulated three water tanks where the water levels in the tanks are monitored and controlled by using ultrasonic level sensors and motorized valves respectively. A simple and inexpensive Arduino based water level control and monitoring system is successfully designed to fulfil the requirement of quick or fast respond for water level control in the simulated model.

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Agung Wahyuono, Ruri, et Miga Magenika Julian. « Revisiting Renewable Energy Map in Indonesia : Seasonal Hydro and Solar Energy Potential for Rural Off-Grid Electrification (Provincial Level) ». MATEC Web of Conferences 164 (2018) : 01040. http://dx.doi.org/10.1051/matecconf/201816401040.

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Regarding the acceleration of renewable energy diffusion in Indonesia as well as achieving the national energy mix target, renewable energy map is essential to provide useful information to build renewable energy system. This work aims at updating the renewable energy potential map, i.e. hydro and solar energy potential, with a revised model based on the global climate data. The renewable energy map is intended to assist the design off-grid system by hydropower plant or photovoltaic system, particularly for rural electrification. Specifically, the hydro energy map enables the stakeholders to determine the suitable on-site hydro energy technology (from pico-hydro, micro-hydro, mini-hydro to large hydropower plant). Meanwhile, the solar energy map depicts not only seasonal solar energy potential but also estimated energy output from photovoltaic system.

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Diyorov, R. H., et D. A. Kuznetsov. « The Hydro-Unit of Mini-Hydroelectric Power Station on the Basis of the Double Fed Induction Machine ». Applied Mechanics and Materials 698 (décembre 2014) : 52–56. http://dx.doi.org/10.4028/www.scientific.net/amm.698.52.

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The system of automatic active power control for the mini-hydroelectric power station hydro-unit based on double fed induction machine differing by high response from the existing designs is proposed.

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Cartland, Richard, Al-Mas Sendegeya et Jean de Dieu Khan Hakizimana. « Performance Analysis of a Hybrid of Solar Photovoltaic, Genset, and Hydro of a Rural-Based Power Mini-Grid : Case Study of Kisiizi Hydro Power Mini-Grid, Uganda ». Processes 11, n^o 1 (5 janvier 2023) : 175. http://dx.doi.org/10.3390/pr11010175.

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The power sector in Uganda has increased steadily, focusing majorly on rural electrification to increase the proportion of the rural population accessing electricity using grid extension and isolated mini-grid approaches. Hydropower mini-grids implemented in rural communities have issues regarding system failures leading to shutdowns and load shedding. A study on an existing isolated hydropower mini-grid was made to find the possible causes. A review of published articles and reports, and an analysis of enrollment patterns, energy sales, and load demand was carried out. A field survey with a guided questionnaire to collect information about real energy demand data was carried out. The performance of the system was accomplished through simulation using HOMER pro × 64 software. The findings from the study show a reduction in customer enrollment, a reduction in energy sales, and a reasonable number of system shutdowns. Hybridization of the existing hydropower was modeled with different options. The hybrid system proposed indicates that, when implemented, it would reduce fuel consumption from 222 to 23.2 L/day and emissions from 82.5 to 8.3 kg/year on average and increases system reliability. Simulated values of NPC, LCOE, and operating costs are appreciable. Despite mini-grid shortfalls, there is notably improved livelihood due to improved social and economic services.

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Dede Furqon Nurjaman. « Analisis Pengaruh Sistem Eksitasi Terhadap Tegangan Keluaran Generator Sinkron Mini Hydro ». EPSILON : Journal of Electrical Engineering and Information Technology 19, n^o 3 (21 janvier 2022) : 85–88. http://dx.doi.org/10.55893/epsilon.v19i3.71.

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Dynamic loading or changing at any time will have an impact on the generator, one of the effects is the change in the generator terminal voltage. So that every generator that contributes to the interconnection system is required to be ready to face any system changes. The purpose of this research is to determine the effect of the excitation current on the generator voltage. In this study, the data obtained were carried out by direct observation, namely by taking the required data and carrying out experimental methods by conducting several experiments in obtaining data, such as operating a generator and to get the value of the generator loading to be analyzed. with the measurement method. The results indicate that the voltage of the synchronous generator Mini Hydro Curug is strongly influenced by the size of the excitation current setting, this can be seen at the time of loading the generator, when the excitation current is 2.2 A, the generator output voltage value is 6.133 kV. , and the highest generator output voltage is at a value of 6.479 kV with an excitation current of 4.6 A.

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Golyanin, Anton A., Aleksey P. Levtsev et Anton V. Vdovin. « Simulation model of a pulsed spiral hydro-mechanical energy converter in the heat supply system of a building ». Journal «Izvestiya vuzov. Investitsiyi. Stroyitelstvo. Nedvizhimost» 10, n^o 3 (2020) : 388–97. http://dx.doi.org/10.21285/2227-2917-2020-3-388-397.

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The objective was to develop a mathematical simulation model of a pulsed spiral hydro-mechanical flow energy converter with a variable speed operating in a pulsed mode. This simulation model can be used for calculating the optimal parameters of such devices. The mechanical energy generated by pulsed liquid can be applied in the driving gear of mini-hydroelectric generators working without drops in water pressure, pumping stations and heat networks providing pressure reduction, as well as in heater fans operating in damp or explosion-hazardous facilities. Pulsed spiral hydro-mechanical energy converters can be used for converting the energy of a liquid flow into rotational motion, which can be further transferred to an electric generator or capacitor. In this study, using the example of a hydro-mechanical converter with a cone-shaped coil, the equations of torque depending on the change in the frequency of flow interruption, the moment of inertia and the resistance in the supports were obtained. Design charts were built for the torque of a hydro-mechanical converter with a cone-shaped coil for a number of coil turns equal to 4 pcs., square tube section 0.00011 m2, and the length of the initial round 0.176 m. The validity of the equations was confirmed by a physical experiment with sufficient accuracy. The conducted comparison of simulated and experimental values showed their agreement with an error of less than 5%. According to the simulation results, design parameters for different models have their own characteristics.

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Darmayusa, I. Made, I. Gusti Ngurah Janardana et I. Wayan Arta Wijaya. « Analisa Sistem Pembumian Pada Pembangkit Listrik Tenaga Minihydro Di Tukad Balian Kabupaten Tabanan ». Jurnal SPEKTRUM 6, n^o 3 (7 septembre 2019) : 45. http://dx.doi.org/10.24843/spektrum.2019.v06.i03.p06.

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Earthing systems (Grounding System) is a device that serves to secure the installation of overcurrent and overvoltage caused by lightning electricity or internal interruption of electricity by removing the payload to the ground. One of the factors that influence terhadapnilai prisoners earthing is resistivity value of the land. Mini-hydro power plants in Tukad Balian Tabanan regency require resistance value ? 2 Ohms. The purpose and benefits of the research was to determine the characteristics of the grounding system in the mini-hydro power plants in Tukad Balian Tabanan regency. And the benefits of this research is in order to get the data that can be used as a reference darii mounting / grounding system planning power plants Tukad Balian minihidor in Tabanan regency.Based on analysis of the calculation of the earthing system with some type used sebagau obtained the following results: by using a single type of rod electrodes (one rod) to obtain the results of the grounding prisoners ?2?, rod electrodes implanted deep as 13 meters. By using two types of rod electrodes (two rod) S> L to get the grounding ?2?, rod electrodes implanted with a length of 7 meters and the distance between the electrodes 9 meters. By using two types of rod electrodes (two rod) S <L to get the grounding ?2?, rod electrodes implanted with a length of 8 meters and the distance between the electrodes 2 meters. By using the type of plate to get the grounding ?2?, required as many as three pieces of plate with a depth of 1 meter. Using a type of grid to earthing ?2? result, a long electrode required 45 meter.

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Farooqi, Awais, Muhammad Murtadha Othman, Ahmad Farid Abidin, Shahril Irwan Sulaiman et Mohd Amran Mohd Radzi. « Mitigation of power quality problems using series active filter in a microgrid system ». International Journal of Power Electronics and Drive Systems (IJPEDS) 10, n^o 4 (1 décembre 2019) : 2245. http://dx.doi.org/10.11591/ijpeds.v10.i4.pp2245-2253.

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<p>Dynamic voltage restorer (DVR) is a series active filter device that is used to protect sensitive loads from power quality issues such as voltage sag, swell, harmonics or disturbances. This implies that the DVR is capable to mitigate power quality disturbances at load terminal. Harmonic is a major power quality problem polluting distribution network causing the end-user equipment to fail operating due to the occurrence of disturbances in voltage, current or frequency. This paper discusses on the DVR used as the proposed technique to mitigate the voltage sag and swell in a distribution network connected with energy storage system and mini-hydro turbine system.</p>

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Hidayat, Cahayahati, Arnita et Saiful Jamaan. « Grid Study of Mini Hydro Power Plant (MHPP) of Palangai Hulu 2x4,9 MW South Pesisir ». MATEC Web of Conferences 248 (2018) : 02003. http://dx.doi.org/10.1051/matecconf/201824802003.

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This paper presents a gridd study of Mini Hydro Power Generation (MHPP) of Palangai Hulu, 2 x 4.9 MW. It is owned by PT. Dempo Sumber Energi (DSE) located at Palangai of South Pesisir Regency. The objective is to fulfill the legal aspects, technical aspects and economic aspects to develop of MHPP. The legal aspect is one of the requirements that must be fulfilled prior to the signing of Power Purchase Agreement (PPA) between DSE and State Electricity Company that called PLN. Technical aspect is to analyze the operational impact of the distribution system after MHPP connecting to the PLN distribution system, while the economic aspect is to analyze how much result energy of MHPP can be absorbed by PLN. Uultimately, it is described the financial feasibility of MHPP. The result is, legal aspect of development of MHPP of Palangai Hulu feasible to be continued to next process to sign contract of PPA. Technically, there is no negative impact of operating the PLN distribution system after the MHPP is connected to the PLN Rayon Balai Selasa system that analyzes using ETAP. Point of Connection (POC) as the selling point of electrical energy by DSE to the most economical PLN is on substation circuit of Balai Selasa. The energy production of MHPP Palangai Hulu can be absorbed 96.4% starting in 2018. The cost of POC is Rp. 11,577,000,000.

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Thèses sur le sujet "Mini-hydro system"

Schmutz, Werner Frederich. « Development of the control and automation system for mini hydro turbines ». Thesis, Cape Technikon, 1995. http://hdl.handle.net/20.500.11838/1257.

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Thesis (MTech(Electrical Engineering))--Cape Technikon, Cape Town,1995
This thesis describes the research, development and design of one of the most modern generic control and automation system for mini Hydro turbines available in the world. Special emphasis is placed on the Man machine interface. A concept of total dynamic plant and data status representation was pursued. To achieve this, a large amount of graphical animation was incorporated into the design. The end product was to be the most economical and cost effective implementable design available , yet providing the most modern functions and features available in the world market. The system was developed and researched to be generic and applicable to any small Hydro plant. The design can thus be implemented on any suitable PLC and SCADA system and is not dependant on any specific manufactures hardware or software. The main emphasis is laid on functional capability of the design. Utilising this design standard would virtually cut the cost of engineering associated with the design of a Hydro control system by 90%. The design and engineering costs related to a Hydro automation project could typically exceed R 100 000 a for small Hydro plant as this scheme.

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Eaton, Norris William. « Mini-hydro systems using induction generators ». Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq25837.pdf.

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CARFAGNA, GIUSEPPE. « Integrated energy interchange platform between green system of smart housing and smart mobility ». Doctoral thesis, Università degli Studi di Camerino, 2018. http://hdl.handle.net/11581/408083.

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In recent years, the need for personal urban mobility has increased a lot especially in emerging and developing countries. It becomes increasingly important to explore propulsion systems that use alternative energy sources and are related to the chain of production, storage and use of renewable energy. Several studies have been conducted in this area, but very few have achieved solutions for the interaction of the vehicle with the building by which it is parked in terms of a multi-energy exchange. Technological innovation of house plant parts, of large residences / hotels, of shelter stations for vehicles, it is now crucial to implement the integration of more renewable energy sources within the same building structure: this is one of the aspects covered by the most general definition of "Smart Housing". Sustainable mobility is perceived as a strong need to match individual urban and sub-urban mobility, to the least environmental and social impact of such personal need. This research project proposes a possible scenario for energy integration between smart housing and smart mobility using a common energy platform that allows self-generation, storage and energy exchange between residential district buildings and smart vehicles. The project integrates multidisciplinary approaches with the aim of designing, evaluating technical and industrial feasibility for the development of: 1) Modular and scalable energy storage devices dedicated to a smart house. 2) a modular city vehicle, with high flexibility of use, with energy storage system and energy-efficient switching capabilities with smart building.

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Chapitres de livres sur le sujet "Mini-hydro system"

Tomović, Radoslav, Aleksandar Tomović, Marko Mumović et Vuk Vujošević. « Development of Construction of Mini Hydro Power Plant Model Based on Pelton Turbine ». Dans Lecture Notes in Networks and Systems, 405–12. Cham : Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-90893-9_48.

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Kougias, Ioannis, Thomas Patsialis, Nicolaos Theodossiou et Jacques Ganoulis. « Hydropower Projects within a Municipal Water Supply System ». Dans Exploring Innovative and Successful Applications of Soft Computing, 59–75. IGI Global, 2014. http://dx.doi.org/10.4018/978-1-4666-4785-5.ch004.

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The interest of those involved in hydroelectricity has been attracted by mini-hydro projects due to their minimal environmental impact and low installation cost. Besides, mini hydros can cooperate with an impressively wide extent of water-related infrastructure, offering a broad potential for investment. In the present chapter, the integrated solution of hydro implementation in water supply systems is presented. Thus, the benefits of a water-supply installation (with constant Q) are extended to energy production. However, defining the optimum operation of such a project is a complicated task, which may involve environmental, hydraulic, technical, and economical parameters. In the present chapter a novel approach is presented, the optimum management of mini hydros in a water supply system with the use of an optimization algorithm (i.e. Harmony Search Algorithm [HAS]). This approach is applied at a site in Northern Greece and is used as a case study of the present chapter.

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Actes de conférences sur le sujet "Mini-hydro system"

Adhikary, B., B. Ghimire et P. Karki. « Interconnection of two micro hydro units forming a mini-grid system using soft connection ». Dans TENCON 2009 - 2009 IEEE Region 10 Conference. IEEE, 2009. http://dx.doi.org/10.1109/tencon.2009.5396207.

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Ali, Asad, Muftooh Ur Rehman Siddiqi, Riaz Muhammad et Arshad. « Design and Simulation of an Electro-mechanical Control System for Mini Hydro Power Plants ». Dans 2018 International Conference on Power Generation Systems and Renewable Energy Technologies (PGSRET). IEEE, 2018. http://dx.doi.org/10.1109/pgsret.2018.8686024.

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Sugimura, Ken, et Hubertus Murrenhoff. « Novel Hydraulic System for Mini Excavators Without Electronic Controls ». Dans BATH/ASME 2016 Symposium on Fluid Power and Motion Control. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/fpmc2016-1755.

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The target application of this study is hydraulic excavators, which are one of the most common machines found at construction sites across the world. Road constructions and improvements, laying operation of cables or pipes and building can be seen in urban areas and digging and dumping operations of natural resource are done in country regions. For the construction site in urban areas, mini hydraulic excavators with operating weights up to 6 tons are often used and they make up more than 60% of the total hydraulic excavators market [1]. In recent years, a number of new system architectures for mobile hydraulic systems have been proposed. Examples of such improved architectures are displacement control, transformer systems and valve controlled systems with multiple pressure rails. For these systems, electronic controls are always used. Although these new methods are promising, they cannot be applied to mini-excavators, because today’s mini-hydraulic excavators do not use electronic controls as this would increase costs and make the system complex. Therefore, the goal of this study is to propose a fully hydro-mechanical valve controlled constant pressure system, which can be applied to mini-excavators in the future. This paper begins by introducing the details of this novel hydraulic system and shows its advantages. Using a simulation model of an 18 ton excavator, it is confirmed that the novel system functions well and the energy efficiency is compared to a conventional Load Sensing system. The simulation results show that the novel system can save 22% and 24% of fuel in leveling and 90° dig-dump cycles respectively.

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Abdullah, M. O., et S. L. Leo. « Feasibility Study of Solar Adsorption Technologies for Automobile Air-Conditioning ». Dans ASME 2005 International Solar Energy Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/isec2005-76064.

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An adsorption system driven by solar heat or waste heat can help to eliminate the use of ozone depletion substances, such as chlorofluorocarbons (CFCs) and hydro-chlorofluorocarbons (HCFCs). In recent years, adsorption system has witnessed an increasing interest in many fields due to the fact that this system is quiet, long lasting, cheap to maintain and environmentally benign. Although adsorption system is not commonly used for automobile air conditioning, adsorption-cooled mini-refrigerators have been marketed for recreational transports (motor homes, boats, etc). Hence, there exists a need for a creative design and innovation to allow adsorption technology to be practical for air conditioning in automobile. The objective of this paper is to present a comprehensive review on the past efforts in the field of solar adsorption refrigeration systems and also the feasibility study of this technology for automobile airconditioning purpose. It is a particularly an attractive application for solar energy because of the near coincidence of peak cooling loads with the available of solar power.

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Abd Hamid, Mohd Fairuz, Nor Azuana Ramli et Siti Nor Baizura Mat Napiah. « Factors affecting mini hydro power production efficiency : A case study in Malaysia ». Dans 2017 3rd International Conference on Power Generation Systems and Renewable Energy Technologies (PGSRET). IEEE, 2017. http://dx.doi.org/10.1109/pgsret.2017.8251806.

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