Network Reconfiguration and Reactive Power Voltage Regulation Coordinated Robust Optimization for Active Distribution Network Considering Extreme Scenarios
Zhao Ping1,2, Zhao Qiqi1,2, Ai Xiaomeng3
1. College of Electrical Engineering & New Energy China Three Gorges University Yichang 443002 China; 2. Yichang Key Laboratory of Intelligent Operation and Security Defense of Power System China Three Gorges University Yichang 443002 China; 3. School of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan 430074 China
Abstract：With the integration of a large number of renewable distributed generation (RDG), the inherent randomness of its output makes it difficult for traditional network reconfiguration and reactive power optimization methods to meet the needs of safe and economic operation of distribution network. In this paper, a two-stage robust optimization method based on extreme scenarios is proposed to coordinate network reconfiguration and reactive power voltage regulation for active distribution network. The proposed approach uses extreme scenario method to deal with random variables, and then carries out coordination optimization of network reconfiguration and reactive power voltage regulation, which can effectively cope with the large random fluctuation of RDG while ensuring the economy of system operation. Firstly, aiming at minimizing the system operation network loss, network reconfiguration and reactive power voltage regulation coordination optimization model is established. The big M-approach and second-order cone relaxation are used to convert the original non-convex model into a mixed integer second-order cone programming model. Secondly, considering the random volatility of RDG, the extreme scenario method is adopted to determine the reconfiguration scheme and the operating status of slow-speed devices such as on-load tap changer in the first stage, so that the fast-speed devices can hedge against the large random fluctuation of RDG in the second stage. Finally, simulations are carried out based on a modified IEEE 33-node system, the simulation results verify the feasibility and effectiveness of the proposed method.
赵平, 赵期期, 艾小猛. 考虑极限场景的主动配电网重构与无功电压调整联合鲁棒优化[J]. 电工技术学报, 2021, 36(zk2): 496-506.
Zhao Ping, Zhao Qiqi, Ai Xiaomeng. Network Reconfiguration and Reactive Power Voltage Regulation Coordinated Robust Optimization for Active Distribution Network Considering Extreme Scenarios. Transactions of China Electrotechnical Society, 2021, 36(zk2): 496-506.
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2021, Vol. 36 
