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Relevant bibliographies by topics / Complex power systems

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Academic literature on the topic 'Complex power systems'

Author: Grafiati

Published: 6 September 2023

Last updated: 7 September 2023

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Journal articles on the topic "Complex power systems"

1

Tarasov, V. A., A. B. Petrochenkov, and B. V. Kavalerov. "Simulation of Complex Electric Power Systems." Russian Electrical Engineering 89, no. 11 (November 2018): 664–69. http://dx.doi.org/10.3103/s1068371218110123.

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Lima, L. T. G., N. Martins, and H. J. C. P. Pinto. "Mixed real/complex factorization (power systems)." IEEE Transactions on Power Systems 8, no. 1 (1993): 302–8. http://dx.doi.org/10.1109/59.221227.

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Lopes, António, and J. Machado. "Power Law Behaviour in Complex Systems." Entropy 20, no. 9 (September 5, 2018): 671. http://dx.doi.org/10.3390/e20090671.

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Palensky, Peter, Arjen van der Meer, Claudio Lopez, Arun Joseph, and Kaikai Pan. "Applied Cosimulation of Intelligent Power Systems: Implementing Hybrid Simulators for Complex Power Systems." IEEE Industrial Electronics Magazine 11, no. 2 (June 2017): 6–21. http://dx.doi.org/10.1109/mie.2017.2671198.

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Solopov, R. V. "Criterion complex optimization in electric-power systems." Russian Electrical Engineering 88, no. 5 (May 2017): 280–84. http://dx.doi.org/10.3103/s1068371217050133.

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Pau, Marco, and Paolo Attilio Pegoraro. "Monitoring and Automation of Complex Power Systems." Energies 15, no. 8 (April 18, 2022): 2949. http://dx.doi.org/10.3390/en15082949.

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Soares, João, Fernando Lezama, Tiago Pinto, and Hugo Morais. "Complex Optimization and Simulation in Power Systems." Complexity 2018 (October 14, 2018): 1–3. http://dx.doi.org/10.1155/2018/6562876.

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Gramatikov, Pavlin, Roumen Nedkov, and Doino Petkov. "Secondary power systems for videometric complex "Fregat"." Aerospace Research in Bulgaria 30 (2018): 134–42. http://dx.doi.org/10.3897/arb.v30.e11.

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The power supply for the video-spectrometric complex (VSC) "Fregat" is being considered. This secondary power supply systems have the following functions: Reception and switching of the voltages; Protection from overload and short circuit in the internal circuits and the exit circuits; Transformation of primary voltage in stabilized secondary voltages; Galvanically untethered secondary circuits by primary and Hull; Protection of the users from the electromagnetic noises; Provision of "Cold" and "Hot" reserve, etc. A set of technical documentation and test-measuring equipment for testing were created. Four sets of Secondary Power Systems for "Fregat" are designed and implemented for two flights to planet Mars.

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He, X. Z. "Mathematical modelling of complex power electronic systems." Mathematical and Computer Modelling 12, no. 7 (1989): 871–89. http://dx.doi.org/10.1016/0895-7177(89)90142-8.

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Bacha, Seddik, Hong Li, and Davis Montenegro-Martinez. "Complex Power Electronics Systems Modeling and Analysis." IEEE Transactions on Industrial Electronics 66, no. 8 (August 2019): 6412–15. http://dx.doi.org/10.1109/tie.2019.2901189.

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Dissertations / Theses on the topic "Complex power systems"

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Zhou, Keming. "Computation of asymmetric fault current in complex power systems." Thesis, Imperial College London, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.287924.

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Bremner, Jonathan James. "Complex torque coefficient analysis of multi-device power systems." Thesis, University of Glasgow, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.362955.

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Berry, T. "Real time simulation of complex power systems using parallel processors." Thesis, University of Bath, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328841.

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Liu, Zifan. "Complex systems and health systems, computational challenges." Thesis, Versailles-St Quentin en Yvelines, 2015. http://www.theses.fr/2015VERS001V/document.

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Le calcul des valeurs propres intervient dans des modèles de maladies d’épidémiques et pourrait être utilisé comme un allié des campagnes de vac- cination dans les actions menées par les organisations de soins de santé. La modélisation épidémique peut être considérée, par analogie, comme celle des viruses d’ordinateur qui dépendent de l’état de graphe sous-jacent à un moment donné. Nous utilisons PageRank comme méthode pour étudier la propagation de l’épidémie et d’envisager son calcul dans le cadre de phé- nomène petit-monde. Une mise en œuvre parallèle de méthode multiple de "implicitly restar- ted Arnoldi method" (MIRAM) est proposé pour calculer le vecteur propre dominant de matrices stochastiques issus de très grands réseaux réels. La grande valeur de "damping factor" pour ce problème fait de nombreux algo- rithmes existants moins efficace, tandis que MIRAM pourrait être promet- teuse. Nous proposons également dans cette thèse un générateur de graphe parallèle qui peut être utilisé pour générer des réseaux synthétisés distri- bués qui présentent des structures "scale-free" et petit-monde. Ce générateur pourrait servir de donnée pour d’autres algorithmes de graphes également. MIRAM est mis en œuvre dans le cadre de trilinos, en ciblant les grandes données et matrices creuses représentant des réseaux sans échelle, aussi connu comme les réseaux de loi de puissance. Hypergraphe approche de partitionnement est utilisé pour minimiser le temps de communication. L’al- gorithme est testé sur un grille national de Grid5000. Les expériences sur les très grands réseaux tels que Twitter et Yahoo avec plus de 1 milliard de nœuds sont exécutées. Avec notre mise en œuvre parallèle, une accélération de 27× est satisfaite par rapport au solveur séquentiel
The eigenvalue equation intervenes in models of infectious disease prop- agation and could be used as an ally of vaccination campaigns in the ac- tions carried out by health care organizations. The epidemiological model- ing techniques can be considered by analogy, as computer viral propagation which depends on the underlying graph status at a given time. We point out PageRank as method to study the epidemic spread and consider its calcula- tion in the context of small-world phenomenon. A parallel implementation of multiple implicitly restarted Arnoldi method (MIRAM) is proposed for calculating dominant eigenpair of stochastic matrices derived from very large real networks. Their high damp- ing factor makes many existing algorithms less efficient, while MIRAM could be promising. We also propose in this thesis a parallel graph gen- erator that can be used to generate distributed synthesized networks that display scale-free and small-world structures. This generator could serve as a testbed for graph related algorithms. MIRAM is implemented within the framework of Trilinos, targeting big data and sparse matrices representing scale-free networks, also known as power law networks. Hypergraph partitioning approach is employed to minimize the communication overhead. The algorithm is tested on a nation wide cluster of clusters Grid5000. Experiments on very large networks such as twitter and yahoo with over 1 billion nodes are conducted. With our parallel implementation, a speedup of 27× is met compared to the sequential solver

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Oliver, John M. "Multi-objective optimisation methods applied to complex engineering systems." Thesis, Cranfield University, 2014. http://dspace.lib.cranfield.ac.uk/handle/1826/11707.

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This research proposes, implements and analyses a novel framework for multiobjective optimisation through evolutionary computing aimed at, but not restricted to, real-world problems in the engineering design domain. Evolutionary algorithms have been used to tackle a variety of non-linear multiobjective optimisation problems successfully, but their success is governed by key parameters which have been shown to be sensitive to the nature of the particular problem, incorporating concerns such as the number of objectives and variables, and the size and topology of the search space, making it hard to determine the best settings in advance. This work describes a real-encoded multi-objective optimising evolutionary algorithm framework, incorporating a genetic algorithm, that uses self-adaptive mutation and crossover in an attempt to avoid such problems, and which has been benchmarked against both standard optimisation test problems in the literature and a real-world airfoil optimisation case. For this last case, the minimisation of drag and maximisation of lift coefficients of a well documented standard airfoil, the framework is integrated with a freeform deformation tool to manage the changes to the section geometry, and XFoil, a tool which evaluates the airfoil in terms of its aerodynamic efficiency. The performance of the framework on this problem is compared with those of two other heuristic MOO algorithms known to perform well, the Multi-Objective Tabu Search (MOTS) and NSGA-II, showing that this framework achieves better or at least no worse convergence. The framework of this research is then considered as a candidate for smart (electricity) grid optimisation. Power networks can be improved in both technical and economical terms by the inclusion of distributed generation which may include renewable energy sources. The essential problem in national power networks is that of power flow and in particular, optimal power flow calculations of alternating (or possibly, direct) current. The aims of this work are to propose and investigate a method to assist in the determination of the composition of optimal or high-performing power networks in terms of the type, number and location of the distributed generators, and to analyse the multi-dimensional results of the evolutionary computation component in order to reveal relationships between the network design vector elements and to identify possible further methods of improving models in future work. The results indicate that the method used is a feasible one for the achievement of these goals, and also for determining optimal flow capacities of transmission lines connecting the bus bars in the network.

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Pezdirc, Marjetka. "The terrorism complex." Thesis, University of Exeter, 2015. http://hdl.handle.net/10871/19149.

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Discussing, defining and engaging with ‘terrorism’ has long been limited to the narrowly framed situations in which parties to an asymmetric conflict resort to the use of force and to the legitimacy they have in doing so. The problem with the limited understanding of ‘terrorism’ and ‘counterterrorism’ as ‘facts of objective reality’ is the lack of attention to the role of the extreme asymmetry of power in conflicts involving ‘terrorism’ that does not lend itself to analysis readily. This thesis introduces a new theoretical concept, the Terrorism Complex that signifies the complexity of power/knowledge relations and the complexity of power/knowledge practices that operate on a discursive and non-discursive level through time and are affected by the mechanisms of power that stem from the asymmetry of power between the actors involved in a conflict. The research into the Terrorism Complex involves an ontological and epistemological widening of the research focus to account for these effects of the interplay between power and knowledge on the production, construction and perception of ‘terrorism’. I draw on postmodern scholarship and the Critical Terrorism Studies to present a theoretical and methodological framework that is used to examine the production of knowledge in relation to the asymmetries of power. The Israeli–Palestinian conflict is used as a case study for the study of power asymmetry in the political field that determines who will be labelled a ‘terrorist’ and who will be able to claim the moral high ground. The research also reveals the surprising extent to which the power over discourse obscures the role of the systemic terrorising exercise of state power in inducing ‘terrorism’. The final chapter concentrates on the media’s role in the Terrorism Complex. It applies the findings from other chapters to observe the Terrorism Complex in action.

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Case, Denise Marie. "Engineering complex systems with multigroup agents." Diss., Kansas State University, 2015. http://hdl.handle.net/2097/19045.

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Doctor of Philosophy
Computing and Information Sciences
Scott A. DeLoach
As sensor prices drop and computing devices continue to become more compact and powerful, computing capabilities are being embedded throughout our physical environment. Connecting these devices in cyber-physical systems (CPS) enables applications with significant societal impact and economic benefit. However, engineering CPS poses modeling, architecture, and engineering challenges and, to fully realize the desired benefits, many outstanding challenges must be addressed. For the cyber parts of CPS, two decades of work in the design of autonomous agents and multiagent systems (MAS) offers design principles for distributed intelligent systems and formalizations for agent-oriented software engineering (AOSE). MAS foundations offer a natural fit for enabling distributed interacting devices. In some cases, complex control structures such as holarchies can be advantageous. These can motivate complex organizational strategies when implementing such systems with a MAS, and some designs may require agents to act in multiple groups simultaneously. Such agents must be able to manage their multiple associations and assignments in a consistent and unambiguous way. This thesis shows how designing agents as systems of intelligent subagents offers a reusable and practical approach to designing complex systems. It presents a set of flexible, reusable components developed for OBAA++, an organization-based architecture for single-group MAS, and shows how these components were used to develop the Adaptive Architecture for Systems of Intelligent Systems (AASIS) to enable multigroup agents suitable for complex, multigroup MAS. This work illustrates the reusability and flexibility of the approach by using AASIS to simulate a CPS for an intelligent power distribution system (IPDS) operating two multigroup MAS concurrently: one providing continuous voltage control and a second conducting discrete power auctions near sources of distributed generation.

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Johan, Fredrik Raak. "Data-driven analysis of wind power and power system dynamics via Koopman mode decompositioｎ." Kyoto University, 2017. http://hdl.handle.net/2433/227628.

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Ha, Dinh Truc. "Line outage vulnerabilities of power systems : models and indicators." Thesis, Université Grenoble Alpes (ComUE), 2018. http://www.theses.fr/2018GREAT018/document.

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La vulnérabilité des systèmes électriques est l'un des problèmes liés à leur complexité. Il a fait l’objet d’une attention croissante des chercheurs au cours des dernières décennies. Malgré cela, les phénomènes fondamentaux qui régissent la vulnérabilité du système ne sont pas encore bien compris.Comprendre comment la vulnérabilité des réseaux électriques émerge de leur topologie est la motivation principale du présent travail. Pour cela, le présent travail de recherché propose une nouvelle méthode pour évaluer la vulnérabilité des systèmes électriques et identifier leurs éléments les plus critiques. La méthode permet d’avoir une bonne compréhension des liens entre la topologie d’un réseau et sa vulnérabilité à des pertes d’ouvrages (lignes ou transformateurs).La première partie de ce travail consiste en une analyse critique des approches rencontrées dans la littérature, s’appuyant sur la théorie des graphes, pour analyser la vulnérabilité des réseaux électriques. Les résultats fournis par ces approches pour quatre réseaux IEEE sont comparés à ceux fournis par une analyse de contingence de référence, basée sur une résolution d’un load-flow AC. Des avantages et inconvénients de chaque approche est tirée une méthode améliorée pour l'évaluation de la vulnérabilité des réseaux électriques aux pertes d’ouvrage. Cette méthode est basée sur une approximation courant continue du load flow.La deuxième partie propose une nouvelle approche basée sur la théorie spectrale des graphes et son utilisation pour la résolution d’un load flow DC. Elle permet de mieux comprendre comment la vulnérabilité des réseaux électriques et leurs composants critiques émergent de la topologie du graphe sous-jacent au réseau
The vulnerability of electrical systems is one of the problems related to their complexity. It has received increasing attention from researchers in recent decades. Despite this, the fundamental phenomena that govern the vulnerability of the system are still not well understood.Understanding how the vulnerability of power systems emerges from their complex organization is, therefore, the main motivation of the present work. It proposes the definition of a standard method to assess the vulnerability of power systems and identify their most critical elements. The method enables a better understanding of the links between the topology of the grid and the line outage vulnerabilities.The first part of this research work offers a critical review of literature approaches used to assess system vulnerability. The results provided by these approaches for four IEEE test systems are confronted to a reference contingency analysis using AC power flow calculations. From these analyses, pros and cons of each approach are outlined. An improved method for assessment of system vulnerability to line outages is defined from this confrontation. It is based on DC load flow and graph theory.The second part proposes a new approach based on spectral graph theory and solving of DC power flow to identify how system vulnerability and critical components emerge from the power network topology

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Popli, Nipun. "Multi-layered Energy Conversion and Frequency Control in Complex Electric Power Systems." Research Showcase @ CMU, 2017. http://repository.cmu.edu/dissertations/916.

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The main performance objective in an electric power grid entails timely and efficient generation and delivery to the time-varying electricity demand. As the electricity industry is witnessing proliferation of the mainstream renewables, the minute-by-minute variations in wind and solar power generation may result in temporary electricity scarcity that jeopardizes grid stability and quality of service. The evolving electricity markets are aimed at incentivizing the conventional generators to reinforce their operating flexibility. This dissertation concerns the goal of enhancing the dynamic response rates of interconnected controllable resources by means of a multi-layered fuel input control of electrically coupled heterogeneous energy conversion components. Both power engineering and large-scale control contributions are made in support of this enhancement. First, improved fuel input controls are designed to enable flexible physics-based energy conversion dynamics required by the interconnected grid. To efficiently utilize the resources load-following and regulation problems are stated. The efficacy of proposed fuel input control designs in enhancing the dynamic response rates is illustrated on IEEE 14-bus system. Second, the problem is formalized as multi-input multioutput time-varying trajectory tracking based on a decentralized spatiotemporal composite control design. The concepts of vector-Lyapunov function and singular perturbation are invoked to formalize model decompositions, over space and time, respectively. Next, the assumptions for model simplifications are relaxed and the problem of parametric uncertainty is addressed. A minimumcost resilient co-design approach is introduced for storage-sensors-communication channels in a complex electric power grid. The notion of selective strong structural fixed modes is explored as a characterization of feasible decentralized control laws for an arbitrary system realization satisfying a pre-specified structure. Finally, it is proposed that planning of generation portfolio must be driven by the objective of maintaining adequate operating flexibility in the system. The goal is to ensure sufficient ramp capacity to sustain the significant integration of intermittent renewable resources.

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Books on the topic "Complex power systems"

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1948-, Bejan Adrian, Mamut Eden, and NATO Advanced Study Institute on Thermodynamics and the Optimization of Complex Energy Systems (1998 : Neptun, Romania), eds. Theromodynamic optimization of complex energy systems. Dordrecht: Kluwer Academic Publishers, 1999.

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Robert, Trappl, ed. Power, autonomy, utopia: New approaches toward complex systems. New York: Plenum Press, 1986.

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Trappl, Robert. Power, Autonomy, Utopia: New Approaches Toward Complex Systems. Boston, MA: Springer US, 1986.

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The global industrial complex: Systems of domination. Lanham, Md: Lexington Books, 2011.

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Liu, Yang, and Qing-Hua Wu. Adaptive Switching Control of Large-Scale Complex Power Systems. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-1039-7.

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Luca, Ferrarini, and Veber Carlo, eds. Modeling, control, simulation, and diagnosis of complex industrial and energy systems. Research Triangle Park, NC: Instrumentation Systems, and Automation Society, 2009.

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The Nazis' march to chaos: The Hitler era through the lenses of chaos-complexity theory. Westport, CT: Praeger, 2000.

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Desideri, Umberto, Giampaolo Manfrida, and Enrico Sciubba, eds. ECOS 2012. Florence: Firenze University Press, 2012. http://dx.doi.org/10.36253/978-88-6655-322-9.

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The 8-volume set contains the Proceedings of the 25th ECOS 2012 International Conference, Perugia, Italy, June 26th to June 29th, 2012. ECOS is an acronym for Efficiency, Cost, Optimization and Simulation (of energy conversion systems and processes), summarizing the topics covered in ECOS: Thermodynamics, Heat and Mass Transfer, Exergy and Second Law Analysis, Process Integration and Heat Exchanger Networks, Fluid Dynamics and Power Plant Components, Fuel Cells, Simulation of Energy Conversion Systems, Renewable Energies, Thermo-Economic Analysis and Optimisation, Combustion, Chemical Reactors, Carbon Capture and Sequestration, Building/Urban/Complex Energy Systems, Water Desalination and Use of Water Resources, Energy Systems- Environmental and Sustainability Issues, System Operation/ Control/Diagnosis and Prognosis, Industrial Ecology.

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Goremykin, Sergey. Relay protection and automation of electric power systems. ru: INFRA-M Academic Publishing LLC., 2021. http://dx.doi.org/10.12737/1048841.

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The textbook describes the main issues of the theory of relay protection and automation of electric power systems. The structure and functional purpose of protection devices and automation of power transmission lines of various configurations, synchronous generators, power transformers, electric motors and individual electrical installations are considered. For each of the types of protection of the above objects, the structure, the principle of operation, the order of selection of settings are given, the advantages and disadvantages are evaluated, indicating the scope of application. The manual includes material on complete devices based on semiconductor and microprocessor element bases. The progressive use of such devices (protection of the third and fourth generations) is appropriate and effective due to their significant advantages. Meets the requirements of the federal state educational standards of higher education of the latest generation. It is intended for students in the areas of training 13.03.02 "Electric power and electrical engineering" (profile "Power supply", discipline "Relay protection and automation of electric power systems") and 35.03.06 "Agroengineering" (profile "Power supply and electrical equipment of agricultural enterprises", discipline "Relay protection of electrical equipment of agricultural objects"), as well as for graduate students and specialists engaged in the field of electrification and automation of industrial and agrotechnical objects.

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Presidential power and accountability: Toward a presidential accountability system. New York: Routledge, 2012.

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Book chapters on the topic "Complex power systems"

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Eliazar, Iddo. "From Power to Lognormal." In Understanding Complex Systems, 183–97. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-33235-8_17.

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Eliazar, Iddo. "From Lognormal to Power." In Understanding Complex Systems, 13–29. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-33235-8_2.

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Robinett, Rush D., and David G. Wilson. "Case Study #4: Fundamental Power Engineering." In Understanding Complex Systems, 207–23. London: Springer London, 2011. http://dx.doi.org/10.1007/978-0-85729-823-2_9.

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Alonso-Meijide, José María, María Gloria Fiestras-Janeiro, and Ignacio García-Jurado. "A New Power Index for Spatial Games." In Understanding Complex Systems, 275–85. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-20853-9_19.

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Tonsberg, Terje Andreas, and Jeffrey Shawn Henderson. "Power as a Category of Leadership Action." In Understanding Complex Systems, 191–99. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-40445-5_26.

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Li, Yong, Dechang Yang, Fang Liu, Yijia Cao, and Christian Rehtanz. "Identification of Dominant Complex Orthogonal Mode (COM)." In Interconnected Power Systems, 75–92. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-48627-6_5.

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Geller, Armando, and Scott Moss. "Modeling Power and Authority: An Emergentist View from Afghanistan." In Understanding Complex Systems, 667–708. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-540-93813-2_25.

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Geller, Armando, and Scott Moss. "Modeling Power and Authority: An Emergentist View from Afghanistan." In Understanding Complex Systems, 721–62. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-66948-9_27.

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Tai, Chung-Ching, and Bin-Tzong Chie. "Market Power and the Hayek Hypothesis: An Experimental Investigation." In Understanding Complex Systems, 161–86. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-15294-8_10.

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Gómez-Villegas, Miguel A., Eusebio Gómez-Sánchez-Manzano, Paloma Maín, and Hilario Navarro. "The Effect of Non-normality in the Power Exponential Distributions." In Understanding Complex Systems, 119–29. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-20853-9_9.

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Conference papers on the topic "Complex power systems"

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Ivanov, Plamen Ch. "Generating power-law tails in probability distributions." In Modeling complex systems. AIP, 2001. http://dx.doi.org/10.1063/1.1386823.

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Murakami, T., Y. Okuno, H. Yamasaki, Michio Tokuyama, Irwin Oppenheim, and Hideya Nishiyama. "Non-Equilibrium Plasma MHD Electrical Power Generation at Tokyo Tech." In COMPLEX SYSTEMS: 5th International Workshop on Complex Systems. AIP, 2008. http://dx.doi.org/10.1063/1.2897867.

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Miyama, Masamichi J., Shin-ichi Sasa, Michio Tokuyama, Irwin Oppenheim, and Hideya Nishiyama. "Power-Law Fluctuations at the Order-Disorder Transition in Colloidal Suspensions under Shear Flow." In COMPLEX SYSTEMS: 5th International Workshop on Complex Systems. AIP, 2008. http://dx.doi.org/10.1063/1.2897810.

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Ning, Zhang, Ye Tengfei, Lu Yanan, and Zheng Siting. "Reliability study of complex power systems." In Education (ICCSE 2011). IEEE, 2011. http://dx.doi.org/10.1109/iccse.2011.6028851.

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Zarghami, M., B. Kaviani, F. Tavatli, and M. Vaziri. "Complex power optimization of photovoltaic systems." In 2014 IEEE Power & Energy Society General Meeting. IEEE, 2014. http://dx.doi.org/10.1109/pesgm.2014.6939373.

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Uematsu, T. "Power Laws in the Dynamics of Polymer Solutions." In SLOW DYNAMICS IN COMPLEX SYSTEMS: 3rd International Symposium on Slow Dynamics in Complex Systems. AIP, 2004. http://dx.doi.org/10.1063/1.1764116.

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Risberg, Daniel, and Lennart Soder. "Hydro power equivalents of complex river systems." In 2017 IEEE Manchester PowerTech. IEEE, 2017. http://dx.doi.org/10.1109/ptc.2017.7981057.

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Lam, J. "Protecting Large and Complex Networks." In IET Cyber Security in Modern Power Systems. Institution of Engineering and Technology, 2016. http://dx.doi.org/10.1049/ic.2016.0044.

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Boukhriss, Ali, Tamou Nasser, and Ahmed Essadki. "Power control for a doubly fed induction generator." In 2012 International Conference on Complex Systems (ICCS). IEEE, 2012. http://dx.doi.org/10.1109/icocs.2012.6458549.

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Budd, C. "Leakage current measurements in complex-geometry EHT systems." In IEE Symposium Pulsed Power 2000. IEE, 2000. http://dx.doi.org/10.1049/ic:20000286.

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Reports on the topic "Complex power systems"

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Chassin, David P., Joel M. Malard, Christian Posse, Asim Gangopadhyaya, Ning Lu, Srinivas Katipamula, and J. V. Mallow. Modeling Power Systems as Complex Adaptive Systems. Office of Scientific and Technical Information (OSTI), December 2004. http://dx.doi.org/10.2172/877087.

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Miller, Jack, and Rory Megginson. Flexible Electricity Systems. Parliamentary Office of Science and Technology, October 2018. http://dx.doi.org/10.58248/pn587.

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The electricity system of Great Britain is becoming increasingly decentralised, with more complex patterns of power production, transportation and consumption. New types of ‘flexibility’ are being developed to facilitate and manage these changes. This POSTnote reviews ways of developing flexibility, as well as technical and economic barriers to doing so.

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Lacaze, Guilhem, and Joseph Oefelein. Development of Quality Assessment Techniques for Large Eddy Simulation of Propulsion and Power Systems in Complex Geometries. Office of Scientific and Technical Information (OSTI), March 2015. http://dx.doi.org/10.2172/1177603.

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Villamil, Julie, Caique Lara, Anthony Abrahao, Aparna Arvelli, Guilherme Daldegan, Sharif Sarker, and Dwayne McDaniel. Development of a Pipe Crawler Inspection Tool for Fossil Energy Power Plants. Florida International University, October 2021. http://dx.doi.org/10.25148/mmeurs.009772.

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Fossil fuel power plants are complex systems containing multiple components that create extreme environments for the purpose of extracting usable energy. Failures in the system can lead to increased down time for the plant, reduction of power and significant cost for repairs. In the past, inspections and maintenance of the plant's superheater tubes has been predominantly manual, laborious, and extremely time consuming. This is due to the pipe's small diameter size (between 1.3 and 7.6 cm) and the coiled structure of the tubing. In addition, the tubes are often stacked close to each other, limiting access for external inspection. Detection of pipe degradation, such as increased levels of corrosion, creep, and the formation of micro-cracks is possible using standard non-destructive evaluation (NDE) methods, including ultrasonic, radiography and electromagnetic methods. However, when the access to the sub-systems is limited or the configuration of the structure is prohibitive, alternative methods are needed for deploying the NDE tools. This research effort considers a novel robotic inspection system for the evaluation of small pipes found in typical boiler superheaters that have limited access. The pipe crawler system is an internal inspection device that can potentially navigate through the entire pipe length using linear actuators to grip the walls and inch along the pipe. The modular nature of the system allows it to traverse through straight sections and multiple 90-degree and 180-degree bends. The crawler is also capable of providing visual inspections, ultrasonic thickness measurements, and generating inner diameter surface maps using LiDAR (light detection and ranging). Ultimately, the development of this robotic inspection tool can provide information regarding the structural integrity of key pipeline components in fossil fuel power plants that are not easily accessible

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Brice, Jeremy. Investment, power and protein in sub-Saharan Africa. Edited by Tara Garnett. TABLE, October 2022. http://dx.doi.org/10.56661/d8817170.

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The place of protein in sub-Saharan Africa’s food system is changing rapidly, raising complex international development, global health and environmental sustainability issues. Despite substantial growth in the region’s livestock agriculture sector, protein consumption per capita remains low, and high levels of undernourishment persist. Meanwhile sub-Saharan Africa’s population is growing and urbanising rapidly, creating expectations that demand for protein will increase rapidly over the coming decades and triggering calls for further investment in the expansion and intensification of the region’s meat and dairy sector. However, growing disquiet over the environmental impacts of further expansion in livestock numbers, and growing sales of alternative protein products in the Global North, has raised questions about the future place of plant-based, insect and lab-grown proteins in African diets and food systems. This report examines financial investment in protein production in sub-Saharan Africa. It begins from the position that investors play an important role in shaping the development of diets and food systems because they are able to mobilise the financial resources required to develop new protein products, infrastructures and value chains, or to prevent their development by withholding investment. It therefore investigates which actors are financing the production in sub-Saharan Africa of: a) animal proteins such as meat, fish, eggs and dairy products; b) ‘protein crops’ such as beans, pulses and legumes; and c) processed ‘alternative proteins’ derived from plants, insects, microbes or animal cells grown in a tissue culture. Through analysing investment by state, philanthropic and private sector organisations – as well as multilateral financial institutions such as development banks – it aims to establish which protein sources and stages of the value chain are financed by different groups of investors and to explore the values and goals which shape their investment decisions. To this end, the report examines four questions: 1. Who is currently investing in protein production in sub-Saharan Africa? 2. What goals do these investors aim to achieve (or what sort of future do they seek to bring about) through making these investments? 3. Which protein sources and protein production systems do they finance? 4. What theory of change links their investment strategy to these goals? In addressing these questions, this report explores what sorts of protein production and provisioning systems different investor groups might be helping to bring into being in sub-Saharan Africa. It also considers what alternative possibilities might be marginalised due to a lack of investment. It thus seeks to understand whose priorities, preferences and visions for the future of food might be informing the changing place of protein in the region’s diets, economies and food systems.

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Hicks, Jacqueline. Examples of 'Systems Thinking' Projects in International Development. Institute of Development Studies, March 2022. http://dx.doi.org/10.19088/k4d.2022.067.

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A “systems thinking” (ST) approach generally recognises that international development processes are complex, inter-related, non-linear, and constantly changing. They involve many different types of actors, all with different levels of power. ST change methods try to mirror these qualities, and move away from more conventional project design and implementation that use simple linear input-output-impact project logic. Thus, this rapid literature review seeks to find out what are some examples of ‘systems thinking’ projects in international development. The aim of this rapid review is to provide concrete examples of how ST shows up in the project design and management processes that are typically used by people working in the international development sector. These include project management arrangements, evaluation indicators, results frameworks, budget allocations and procurement, country diagnostics, and the foundational analysis that informs project design. The examples found were mostly extracted from donor project documents. Different definitions of ST may emphasise different elements. An attempt was made to find a range of projects from different sectors, and to go beyond projects that exemplified “Market Systems Development” and “Adaptive Management,” for which there are already repositories of project examples (see Further Resources).The inclusion of the projects in this review does not imply that they were successful, only that they contain some evidence of ST in them. Most of the projects identified have a further library of documents, including evaluations, that give more detailed information about their successes and failures.

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Kramer, R. System Integration of Distributed Power for Complete Building Systems: Phase 1 Report. Office of Scientific and Technical Information (OSTI), December 2003. http://dx.doi.org/10.2172/15005923.

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Kramer, R. System Integration of Distributed Power for Complete Building Systems: Phase 2 Report. Office of Scientific and Technical Information (OSTI), December 2003. http://dx.doi.org/10.2172/15006055.

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Ross-Larson, Bruce. Why Students Aren’t Learning What They Need for a Productive Life. Research on Improving Systems of Education (RISE), March 2023. http://dx.doi.org/10.35489/bsg-rise-2023/pe13.

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The RISE program is a seven-year research effort that seeks to understand what features make education systems coherent and effective in their context and how the complex dynamics within a system allow policies to be successful. RISE had research teams in seven countries: Ethiopia, India, Indonesia, Nigeria, Pakistan, Tanzania, and Vietnam. It also commissioned research by education specialists in Chile, Egypt, Kenya, Peru, and South Africa. Those researchers tested ideas about how the determinants of learning lie more in the realm of politics and particularly in the interests of elites. They focused on how the political conditions have (or have not) put learning at the center of education systems (mostly not) while understanding the challenges of doing so. Each country team produced a detailed study pursuing answers to two central research questions: Did the country prioritize learning over access, and if so, during what periods? What role did politics play in the key decisions and how? The full studies detail their analytical frameworks, their data, and sources (generally interviews, government internal documents and reports, and other local and international publications), and the power of their assessments, given their caveats and limitations. Country summaries extract from the full studies how leadership, governance, teaching, and societal engagement are pertinent to student outcomes (see the next page). This synthesis, in line with Levy 2022, draws on the country summaries to detail the salience of goals of national leaders, alliances of stakeholders, missions of education bureaucracies, and expectations of society.

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Little, Charles, and David Biedenharn. Technical assessment of the Old, Mississippi, Atchafalaya, and Red (OMAR) Rivers : channel geometry analysis. Engineer Research and Development Center (U.S.), August 2022. http://dx.doi.org/10.21079/11681/45147.

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The Old River Control Complex (ORCC) consists of the Low Sill, Auxiliary, and Overbank structures as features of the Old River Control Structure (ORCS) and the privately owned hydro-electric power plant. Operations of the ORCC manage the hydrologic connectivity between the Mississippi River and the Atchafalaya River/Red River systems. The morphology of the Old, the Mississippi, the Atchafalaya, and the Red Rivers (OMAR) has been influenced by the flow distribution at the ORCC, as well as the accompanying bed sediments. A geomorphic assessment of the OMAR is underway to understand the morphological changes associated with operation of the ORCC. Supporting the geomorphic assessment, a channel geometry analysis herein documents observed adjustments of the affected river channels. Historical hydrographic survey data were used in the Geographic Information System to create river channel geometric models, which inform the analysis. Geometric parameters for cross sections and volume polygons were computed for each survey and evaluated for morphological trends which may be ascribed to the influence of the ORCC. Additionally, the geometric parameters for the Atchafalaya River were used to extend the geometry analyses from the 1951 Mississippi River Commission report on the Atchafalaya River, which was the primary catalyst for the initial development of the ORCS.

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