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Development of a methodology for assessing the adequacy of electric power systems

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Global Energy Interconnection 2022年第5期5卷 543-550页

作者： Dmitry S.Krupenev Denis A.Boyarkin Dmitrii V.Iakubovskii Melentiev Energy systems Institute of Siberian Branch of the Russian Academy of Sciences Lermontov str.130Irkutsk664033Russia

This study presents the results of a research into the developing a methodology for assessing the adequacy of advanced electric power systems characterized by the integration of various innovative technologies,which complicates their *** methodology development is aimed at solving two main problems:(1)increase the adequacy of modeling the processes that occur in the electric power system and (2)enhance the computational efficiency of the adequacy assessment *** study proposes a new mathematical model to minimize the power shortage and enhance the adequacy of modeling the *** model considers quadratic power transmission losses and network *** computational efficiency of the adequacy assessment methodology is enhanced using efficient random-number generators to form the calculated states of electric power systems and machine learning methods to assess power shortages and other reliability characteristics in the calculated states.

关键词： electric power systems Adequacy power shortage minimization Pseudo-and quasi-random number generation Machine learning methods.

Distributed Model Predictive Load Frequency Control of Multi-area power System with DFIGs

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IEEE/CAA Journal of Automatica Sinica 2017年第1期4卷 125-135页

作者： Yi Zhang Xiangjie Liu Bin Qu Department of electrical Engineering North China University of Science and Technology State Key Laboratory of Alternate electrical power System with Renewable Energy Sources North China Electric Power University

Reliable load frequency control LFC is crucial to the operation and design of modern electric power systems. Considering the LFC problem of a four-Area interconnected power system with wind turbines, this paper presents a distributed model predictive control DMPC based on coordination scheme. The proposed algorithm solves a series of local optimization problems to minimize a performance objective for each control area. The generation rate constraints GRCs, load disturbance changes, and the wind speed constraints are considered. Furthermore, the DMPC algorithm may reduce the impact of the randomness and intermittence of wind turbine effectively. A performance comparison between the proposed controller with and without the participation of the wind turbines is carried out. Analysis and simulation results show possible improvements on closed-loop performance, and computational burden with the physical constraints. © 2014 Chinese Association of Automation.

关键词： Asynchronous generators electric control equipment electric fault currents electric frequency control electric load management electric power systems Model predictive control Optimization Press load control Wind Wind turbines

NEWLY-DEVELOPED AND CHEAP NANOCRYSTALLINE Fe-Cu-Nb-Mo-Si-B ALLOYS FOR SWITCHING MODE power SUPPLY

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Acta Metallurgica Sinica(English Letters) 1997年第6期10卷 489-494页

作者： Zhang, Y.Z. Shanghai Iron and Steel Research Inst Shanghai China

The synthetical soft magnetic properties were reported for newly-developed nanocrystalline Fe73.5Cu1Nb0.9 Mo2.1Si13.5B9 and Fe73.5Cu1Nb0.5 Mo2.5Si13.5B9 alloys. The levels of high-frequency losses of the new alloys are P3/100k=612 and 670 kWm-3, P2/200k=880 and 973kWm-3, P2/500k=4300 and 4600 kWm-3, P0.5/1000k=860 and 920 kWm-3, respectively. They are significantly lower than those of the superior power Mn-Zn ferrite H7c4. The dependence of core loss on frequency and amplitude flux density has been analyzed. The practical applications of the new alloys to switching mode power supplies with the output power of 1 and 2kW were reported.

关键词： Boron Copper alloys electric power systems Magnetic materials Molybdenum alloys Nanostructured materials Niobium alloys Silicon alloys

Smart Grid Wide-Area Transmission System Visualization

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Engineering 2015年第4期1卷 466-474页

作者： Thomas J.Overbye James Weber University of Illinois at Urbana-Champaign powerWorld Corporation

The installation of vast quantities of additional new sensing and communication equipment, in conjunction with building the computing infrastructure to store and manage data gathered by this equipment, has been the fi rst step in the creation of what is generically referred to as the "smart grid" for the electric transmission system. With this enormous capital investment in equipment having been made, attention is now focused on developing methods to analyze and visualize this large data set. The most direct use of this large set of new data will be in data visualization. This paper presents a survey of some visualization techniques that have been deployed by the electric power industry for visualizing data over the past several years. These techniques include pie charts, animation, contouring, time-varying graphs, geographic-based displays, image blending, and data aggregation techniques. The paper then emphasizes a newer concept of using word-sized graphics called sparklines as an extremely eff ective method of showing large amounts of timevarying data.

关键词： electric power systems wide-area visualization power flow transient stability smart grid sparklines

Towards a (More) Electronic Transmission and Distribution (eT&D)

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CES Transactions on electrical Machines and systems 2017年第1期1卷 15-25页

作者： Don Tan Damir Novosel IEEE NGAS Quanta ABB KEMA T&D US

The challenges and the path towards a(more)electronic transmission and distribution(eT&D)is presented in this *** challenges are first identified together with key stakeholders in the drive for grid modernization.A fundamental question is then asked about the investment *** basic characteristics are reviewed,leading to the composition of structured microgrids as the basic functional cell of a modern *** example of fractal radial structure and one fractal meshed structure are *** likely evolution path is then proposed together with basic technology *** foundation technologies are discussed in detail,including adiabatic power conversion,3MC technology,medium voltage conversion,distribution-level electronic power transformer and FACTs hardware integration,and back-to-back converters as a universal interconnect *** rapidly emerging on-wire sensing technology is also *** is pointed out that the distribution-level large electronic power transformer will provide a key component to enable hybrid ac/dc grid flow control and ancillary support for a flexible electronic transmission and distribution(eT&D)systems.

关键词： All things grid connected electric power systems electronic transmission&distribution(eT&D) energy solutions flexible electronic transmission systems(FETS) grid modernization large electronic power transformers 3MC converters renewable energy.

power system analysis and design 3.

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power system analysis and design 4th ed., 英文改编版.

丛书名：时代教育·国外高校优秀教材精选

2004年

作者： J. Duncan Glover Mulukutla S. Sarma J. 邓肯·格洛弗穆卢库特拉 S.萨尔马

本书的主要内容是介绍电力系统分析和设计的方法。

ISBN: (数字)7111147855

ISBN: (纸本)7111147855

本书的主要内容是介绍电力系统分析和设计的方法。

关键词： electric power systems

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