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Robust N−k Security-constrained Optimal Power Flow Incorporating Preventive and Corrective Generation Dispatch to Improve Power System Reliability

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CSEE Journal of Power and Energy Systems 2023年第1期9卷 351-364页

作者： Liping Huang Chun Sing Lai Zhuoli Zhao Guangya Yang Bang Zhong Loi Lei Lai School of Automation Guangdong University of TechnologyGuangzhou 510006China School of Automation Guangdong University of TechnologyGuangzhou 510006Chinaand also with the Department of Electronic and Electrical EngineeringBrunel University LondonLondonUB83PHUK Center for Electric Power System and Energy Department of Electrical EngineeringTechnical University of DenmarkKongens Lyngby 2800Demark Zhaoqing Power Supply Bureau Guangdong Power Grid CompanyChina Southern Power GridZhaoqing 526020China

As extreme weather events have become more frequent in recent years,improving the resilience and reliability of power systems has become an important area of *** this paper,a robust preventive-corrective security-constrained optimal power flow(RO-PCSCOPF)model is proposed to improve power system reliability under N−k *** the short-term emergency limit(STL)and the long-term operating limit(LTL)of the post-contingency power flow on the branch are *** with the existing robust corrective SCOPF model that only considers STL or LTL,the proposed ROPCSCOPF model can achieve a more reliable generation dispatch *** addition,this paper also summarizes and compares the solution methods for solving the N−k SCOPF *** computational efficiency of the classical Benders decomposition(BD)method,robust optimization(RO)method,and line outage distribution factor(LODF)method are investigated on the IEEE 24-bus Reliability Test System and 118-bus *** results show that the BD method has the worst computation *** RO method and the LODF method have comparable ***,the LODF method can only be used for the preventive SCOPF and not for the corrective *** RO method can be used for both.

关键词： Benders cut bender decomposition line outage distribution factor N−k security criterion optimal power flow power system reliability resilience robust optimization

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Study of the Location of TCSC for Improving ATC Considering N-1 Security Constraints

Study of the Location of TCSC for Improving ATC Considering ...

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第26届中国控制与决策会议

作者： Wenjie TANG Wenjing PAN Kaifeng ZHANG Cheng LIU School of Automation Southeast University Key Laboratory of Measurement and Control of CSE Southeast University

With the increasing demand of electric power, transmission congestion becomes a popular phenomenon in power systems. In order to improve the ATC（Available Transfer Capability） between buses of the network, this paper proposes a location method of TCSC in power grid. Power transfer distribution factor and line outage distribution factor are used to build the mathematical model of ATC considering the N-1 security constraints. Meanwhile, the genetic algorithm is used to calculate the location and the capacity of TCSC. The proposed method is applied to the IEEE 14-bus system. The results show that this method can improve the ATC of power systems with TCSC obviously.

关键词： TCSC ATC Power Transfer distribution factor line outage distribution factor Genetic Algorithms

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