摘要
随着特高压直流大规模馈入,受端电网运行特性发生显著变化,系统动态无功储备和电压支撑不足问题凸显,迫切需要配置调相机等动态无功补偿装置。首先研究了调相机对多直流馈入受端电网运行及直流换相失败特性的影响,其次分析了现有常规控制模式下调相机抑制直流连续换相失败方面的不足,提出了调相机参与紧急控制的策略思想及系统架构,最后基于实际省级电网仿真验证了所提策略的有效性。
With the large-scale infeed of UHVDC,the operation characteristics of the receiving-end power grid have changed significantly,and the insufficient dynamic reactive power reserve and voltage support urgently require a dynamic reactive compensation device such as synchronous condenser.This paper expounds the influence of synchronous condenser on the operation of the receiving-end grid with multiple DC infeed and DC commutation failure characteristics;besides,it analyzes disadvantages of the synchronous condenser in continuous commutation failure suppression under the existing conventional control mode and proposes a strategy and system architecture in which the synchronous condenser is involved for emergency control;finally,the proposed strategy is verified based on the provincial-level power grid simulation.
作者
黄慧
吴雪莲
楼伯良
华文
王龙飞
HUANG Hui;WU Xuelian;LOU Boliang;HUA Wen;WANG Longfei(NARI Group Corporation(State Grid Electric Power Research Institute),Nanjing 211106,China;State Grid Zhejiang Electric Power Research Institute,Hangzhou 310014,China)
出处
《浙江电力》
2020年第8期20-25,共6页
Zhejiang Electric Power
基金
国网浙江省电力有限公司科技项目(5211DS17001G)。
关键词
调相机
多直流馈入
受端电网
换相失败
紧急控制
synchronous condenser
multiple DC infeed
receiving-end grid
commutation failure
emergency control
