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Graph Computing and Its Application in Power Grid analysis

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CSEE Journal of Power and Energy Systems 2022年第6期8卷 1550-1557页

作者： Mike Zhou Jianfeng Yan Qianhong Wu China Electric Power Research Institute Beijing 100192China

Approaches to apply graph computing to power grid analysis are systematically explained using real-world application *** exploring the nature of the power grid and the characteristics of power grid analysis,the guidelines for selecting appropriate graph computing techniques for the application to power grid analysis are outlined.A custom graph model for representing the power grid for the analysis and simulation purpose and an in-memory computing(IMC)based graph-centric approach with a shared-everything architecture are *** algorithms,including network topology processing and subgraph processing,and graph computing application scenarios,including in-memory computing,contingency analysis,and Common Information Model(CIM)model merge,are presented.

关键词： CIM model merge contingency analysis Graph computing in-memory computing network topology processing power grid analysis subgraph processing

Graph Theory Based N-1 Transmission contingency Selection and Its Application in Security-constrained Unit Commitment

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Journal of Modern Power Systems and Clean Energy 2021年第6期9卷 1458-1467页

作者： Lu Nan Yikui Liu Lei Wu Tianqi Liu Chuan He College of Electrical Engineering Sichuan University the Department of Electrical and Computer Engineering Stevens Institute of Technology Department of Electrical and Computer Engineering Stevens Institute of Technology

contingency analysis is an important building block in the stability and reliability analysis of power grid operations. However, due to the large number of transmission lines,in practice only a limited number of contingencies could be evaluated. This paper proposes a graph theory based N-1 contingency selection method to effectively identify the most critical contingencies, which can be used in security-constrained unit commitment(SCUC) problems to derive secure and economic operation decisions of the power grid. Specifically, the power flow transferring path identification algorithm and the vulnerability index are put forward to rank individual contingencies according to potential transmission line overloads. Effectiveness of the proposed N-1 contingency selection method is quantified by applying the corresponding SCUC solution to the full N-1 security evaluation, i. e., quantifying total post-contingency generation-load imbalance in all N-1 contingencies. Numerical results on several benchmark IEEE systems, including5-bus, 24-bus, and 118-bus systems, show effectiveness of the proposed method. Compared with existing contingency selection methods which usually resort to full power flow calculations,the proposed method relies on power gird topology to effectively identify critical contingencies for facilitating the optimal scheduling of SCUC problems.

关键词： Concentric relaxation contingency analysis graph theory security-constrained unit commitment(SCUC) shortest path vulnerability index

MBA Students’Quality Improvement:The Correlation analysis of Students’Personal Traits and Attitudes towards Teaching Methods at a Chinese University

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Frontiers of Education in China 2015年第4期10卷 608-633页

作者： KONG Rui GAO Xiaowei ZHONG Wanxing ZHOU Xiaoling Institute of Humanities and Economic Management China University of Geosciences(Beijing)Beijing 100083China Business Administration China University of Geosciences(Beijing)Beijing 100083China Beijing Aviation Ground Services Co.Ltd. Beijing 100621China

MBA education has become the fastest growing segment of education in China in recent years and a segment that can now be considered ***,how best to teach it has long been a source of *** of the key issues is how to match student traits with teaching *** engaged as teachers of marketing management,the authors collected data by questionnaire,carried out empirical research and data comparison,and undertook contingency *** was found that different personal traits in students lead to different attitudes towards teaching methods.A student’s major in college,gender,and sector of employment has little influence on attitudes towards teaching methods,while age,the most sensitive factor,plays the biggest role,followed by job and ***,these factors should be taken into consideration when arranging classes,developing the curriculum,and planning teaching methods.

关键词： MBA education personal traits teaching methods correlation contingency analysis

Fuzzy Based Intelligent Monitoring of Critical Lines in the Restructured Power Market

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Circuits and Systems 2016年第9期7卷 2196-2206页

作者： S. Rajasekaran S. Sathiyamoorthy Department of Electrical & Electronics Engineering M.A.M College of Engineering and Technology Anna University Chennai India Department of Electronics & Instrumentation Engineering J.J College of Engineering and Technology Anna University Chennai India

Restructured electric market environment allows the power wheeling transactions between the power producers and customers to meet the growing load demand. This will lead to the possible of congestion in the transmission lines. The possible contingencies of power components further worsen the scenario. This paper describes the methodology for the identification of critical transmission line by computing the real power and reactive power performance indices. It also demonstrates the importance of fuzzy logic technique used to rank the transmission lines according to the severity and demonstrated on IEEE-30 bus system.

关键词： contingency analysis Active Power Performance Index Reactive Power Performance Index Fuzzy Logic Wheeling Transaction

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