华东电网调相机AVC控制策略研究  

Study on AVC Control Strategy of Synchronous Condenser in East China Grid

作　　者：巩伟峥 肖洋 夏潮 于大海 蔡金华[3] GONG Weizheng;XIAO Yang;XIA Chao;YU Dahai;CAI Jinhua(State Grid East China Electric Power Dispatching and Control Sub-center,Pudong New District,Shanghai 200120,China;China Electric Power Research Institute,Haidian District,Beijing 100192,China;NR Electric Co.,Ltd.,Nanjing211102,Jiangsu Province,China)

机构地区：[1]国家电网华东电力调控分中心,上海市浦东新区200120 [2]中国电力科学研究院有限公司,北京市海淀区100192 [3]南京南瑞继保电气有限公司,江苏省南京市211102

出　　处：《电网技术》2020年第8期3106-3113,共8页Power System Technology

摘　　要：为实现调相机的无功优化控制,提出了一种高压直流换流站调相机的自动电压控制(automaticvoltagecontrol,AVC)策略。首先分析了调相机励磁控制系统和不同励磁控制模式之间的切换逻辑。针对调相机所在的高压直流换流站及近区电网,AVC主站建立二级电压控制区域,并对该区域实行无功协调控制。根据励磁控制模式之间的切换逻辑和AVC主站调相机控制策略,确定了调相机AVC子站的控制模式以及切换逻辑。通过实时数字仿真器(realtimedigital simulator,RTDS)动模试验,验证了所提策略的正确性和可实行性。文中提出的AVC控制策略,在电网故障时确保调相机动态无功支撑能力,稳态运行时发挥调相机无功源作用,从而优化区域无功出力,提高区域无功调节水平。This paper presents an automatic voltage control(AVC) strategy of high-voltage DC converter station synchronous condenser to perform the reactive optimal control of synchronous condenser. Firstly, the switching logic between the excitation control system and the excitation control modes of synchronous condenser is analyzed. Secondly, the secondary voltage control area, which involves the high-voltage DC converter station and nearby power grid, is established and coordinated by the AVC master station. Thirdly, according to the switching logic of excitation control modes and the synchronous condenser control strategy of AVC master station, the control modes of AVC slave station as well as the switching logic is determined. Real time digital simulator(RTDS) tests verify that the proposed strategy is correct and practical. The presented strategy ensures the dynamic reactive power support capability of synchronous condenser in the case of grid fault. Meanwhile, it enhances the reactive power source effect ofsynchronous condenser in the case of steady-state operation. As a result, the regional reactive power is optimized, and the adjusting ability of regional reactive power is improved.

关 键 词：调相机 励磁控制系统 自动电压控制 高压直流 

分 类 号：TM721[电气工程—电力系统及自动化]