ISSN 1000-1026
CN 32-1180/TP
  • ISSN 1000-1026
  • CN 32-1180/TP

Citation: YANG Ke,TAN Chao,WANG Minkun,HU Xiang,QING Quan,YANG Yang.Optimization Method for Automatic Generation Control in Multi-DC Weak Sending Power Grid with High Proportion of Hydropower[J].Automation of Electric Power Systems. DOI: 10.7500/AEPS20180812011 copy

Optimization Method for Automatic Generation Control in Multi-DC Weak Sending Power Grid with High Proportion of Hydropower

  • Received Date: August 12, 2018
    Accepted Date: January 07, 2019
    Available Online: 2019-02-01

  • Abstract:

        After the operation of Chongqing-Hubei back-to-back flexible DC project, the Southwest power grid with multi-DC weak sending and high proportion of hydropower is significantly reduced. Considering the grid operation of the Southwest power grid in asynchronous mode, and the existing problems of AGC algorithms and modelling methods are analyzed. A computational method of area regulation requirement, based on proportional-derivative control law, is proposed to increase system stability by reducing errors in advance. Based on the relationships between low-pass filter process and control quality, the setting of dynamic filtering factors for different working condition is developed to balance dynamic response performance and frequent adjustment of units output. The optimization schemes for establishing the control areas and relevant control strategies are proposed in order to meet the demands for the efficiency and safety in actual operation. Verification simulations are carried out and AGC full dynamic simulation results prove the effectiveness of the proposed optimization methods based on the platform of the PSD-FDS. This work is supported by National Key R&D Program of China (No.2017YFB0902600) State Grid Corporation of China and Southwest Branch of State Grid Corporation of China.

  • Keywords:

    asynchronous power grid; high proportion of hydropower; multi-level dispatch and control; automatic generation control (AGC); feedback control system; full dynamic simulation

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