Electric Power ›› 2020, Vol. 53 ›› Issue (8): 77-84.DOI: 10.11930/j.issn.1004-9649.202004166

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Probabilistic Optimization Method for Pilot-Bus Selection and Network Partitioning of AC/DC System

YAN Wei1, YANG Biao1,3, MO Jingshan1, ZHOU Youbin2, WANG Tao2, XIAO Fan2   

  1. 1. State Key Laboratory of Power Transmission Equipment & System Security and New Technology (Chongqing University), Chongqing 400044, China;
    2. Electric Power Research Institute, State Grid Hubei Electric Power Co., Ltd., Wuhan 430072, China;
    3. State Grid Energy Research Institute Co., Ltd., Beijing 102209, China
  • Received:2020-04-21 Revised:2020-04-29 Published:2020-08-05
  • Supported by:
    This work is supported by Science and Technology Project of State Grid Corporation of China (No.52153218000H) and National Natural Science Foundation of China (No.51677012)

Abstract: To ensure higher voltage control ability of regional power supply to the converter bus, a probabilistic optimization method for pilot-bus selection and network partitioning of AC/DC system is proposed in this paper. Through load equivalence of converter station, the typical node power scenarios of source-load-converter station are simulated. With consideration of the reactive power partitioning balance demand under the node power variation of source-load-converter station, an optimization model is established considering the controllability of the coupling bus of AC/DC system, and is solved by the immune genetic algorithm. As a result, the voltage control ability of the regional power to converter station is further improved. A simulation analysis is conducted on an IEEE 39 bus system, and the result verifies the effectiveness of the proposed method.

Key words: pilot-bus, network partitioning, voltage and reactive power control, AC/DC system, probability optimization method