Electric Power ›› 2021, Vol. 54 ›› Issue (1): 159-166.DOI: 10.11930/j.issn.1004-9649.201904067

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An On-Line Preventive Control Method for Meeting the Power Supply Demand of Large-Scale Urban Power Grid

WU Feng1, BAO Yanhong1, ZHOU Hua2, XU Taishan1, LOU Boliang3, REN Xiancheng1, WANG Longfei3   

  1. 1. NARI Group Corporation Co., Ltd. (State Grid Electric Power Research Institute Co., Ltd.), Nanjing 211106, China;
    2. State Grid Zhejiang Electric Power Co., Ltd., Hangzhou 310007, China;
    3. State Grid Zhejiang Electric Power Co., Ltd. Electric Power Research Institute, Hangzhou 310014, China
  • Received:2019-04-14 Revised:2019-11-20 Online:2021-01-05 Published:2021-01-11
  • Supported by:
    This work is supported by Science and Technology Project of SGCC (Study on Auxiliary Decision Technology for the Whole Process of Frequency and Voltage Dynamic Stability of Ended Power Grid, No.521104170013).

Abstract: An on-line preventive control coordinated decision-making method is proposed considering different types of load reliability demands and accident risks in urban power grid, which is suitable for large urban power grid with diverse load characteristics and different reliability requirements of functional areas. Based on an analysis of the new demand for the development of the urban power grid and the shortages of the existing defense measures, a coordinated decision-making model is given considering the cost of measures and the risk of accidents. And then, the enumeration combination and cluster iterative computing are used to search the optimal preventive control strategies for partition load transfer and feeding user load shedding, which will lay the foundation for large urban power grid to realize meticulous, differential and integrated prevention of accidents. The correctness and feasibility of the proposed method are verified by simulation analysis of actual power grid operation data.

Key words: preventive control, large urban power grid, partition load transfer, load shedding scheme