A Novel Optimization Model to Explore Static Voltage Stability Region Boundary in Bulk Power Systems
Jiang Tao1, Zhang Mingyu1, Cui Xiaodan2, Li Yong3, Shi Qu2
1. Department of Electrical Engineering Northeast Electric Power University Jilin 132012 China; 2. NARI Group Corporation (State Grid Electric Power Research Institute) Nanjing 211106 China; 3. Central China Electric Power Dispatching and Control Center Wuhan 430077 China
Abstract Static voltage stability region (SVSR) is a powerful tool to assess the voltage stability in power system with high stochastic and uncertainty. Two typical methods, CPF and hyperplane approximation, are developed to explore the SVSR boundary. The CPF can explore the highly accurate SVSR boundary but aggravates the computational burden; the hyperplane approximation can enhance the computational efficiency of SVSR boundary but may obtain an inaccurate boundary. To enhance the computational efficiency of the SVSR with higher computational precision, a novel optimization model to explore the SVSR boundary is developed in this paper by referring to the topology of the SVSR boundary. An initial SNB point on the SVSR boundary is first explored by tradition optimal power flow (OPF), and then the optimization model is employed to track other SNB points to explore the SVSR boundary using the tracked SNB. The WECC-9 test system, IEEE-118 test system and Union for the Coordination of Transmission of Electricity (UCTE) 1354-bus system are employed to evaluate the performance of the proposed optimization model, the results confirm that the proposed optimization model can improve the computational efficiency to explore SVSR boundary with high accuracy.
Jiang Tao,Zhang Mingyu,Cui Xiaodan等. A Novel Optimization Model to Explore Static Voltage Stability Region Boundary in Bulk Power Systems[J]. Transactions of China Electrotechnical Society, 2018, 33(17): 4167-4179.
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2018, Vol. 33 
