摘要
直流在孤岛运行方式下送端为弱交流系统,安全稳定控制对电网的稳定运行十分重要。分析了新东直流输电处于孤岛方式运行下的控制策略,结合新东直流安稳控制策略的验证,开展了RTDS仿真试验,并针对试验中暴露出的现有稳控系统对小孤岛状态判别的缺陷,深入分析了稳控系统中电厂稳控装置动作的原理,提出了优化的小孤岛判别方法,并验证了该方法的有效性。所提方法对于稳控系统测试标准化具有重要的借鉴意义。
The sending end of HVDC in the islanded operation mode is a weak AC system whose security and stability control system(SSC)is very important for the operation of the power grid.The control strategy of Xinsong-Dongfang HVDC transmission in the islanded mode is analyzed in this paper.RTDS simulation tests are used to validate the SSC of Xinsong-Dongfang HVDC transmission project.For the defects of the existing SSC in identifying the small island state exposed in the test,the operation principle of the power plant stability control device in the stability control system is analyzed in depth,and an optimized method for identifying the small island state is proposed,and the effectiveness of the method is verified.The results show that the proposed method has important reference significance for the standardization of stability control system tests.
作者
李成翔
郭琦
朱益华
陈德扬
常东旭
夏成军
LI Chengxiang;GUO Qi;ZHU Yihua;CHEN Deyang;CHANG Dongxu;XIA Chengjun(State Key Laboratory of HVDC(Electric Power Research Institute of CSG),Guangzhou 510663,Guangdong,China;CSG Key Laboratory of Power System Simulation,Guangzhou 510663,Guangdong,China;South China University of Technology,Guangzhou 510641,Guangdong,China)
出处
《电网与清洁能源》
2019年第9期1-6,11,共7页
Power System and Clean Energy
基金
南方电网公司科技项目(ZBKJXM20180034)
国家自然科学基金项目(U1766213)~~
关键词
高压直流输电
安全稳定控制
小孤岛
RTDS
high-voltage direct current
security and stability control
small island discrimination
RTDS
