摘要
可控串联补偿(TCSC)对远距离输电系统的暂态稳定性的影响较大。为保证系统在大扰动后发电机首摆及后续振荡保持稳定,本文结合等面积法则和单摆过程中能量守恒原理,提出了新的TCSC稳定控制策略:在故障清除后TCSC迅速对线路提供强补;而在后续振荡中的每个振荡周期内使TCSC在强补和闭锁状态间切换;由此达到提高首摆的暂态稳定裕度和迅速阻尼振荡的效果。在单机无穷大系统上进行了仿真,结果验证了该控制策略的有效性和优越性。
Thyristor controlled series compensation(TCSC)has a largerimpact on the transient stability of long-dis-tance power transmission systems.To ensure that the generator remains stable in the first and the following swings after a large disturbance,a new TCSC stability control strategy is proposed with the combination of equal area criterion and the energy conservation principle during one single swing.This method can not only improve the transient stability mar-gin of the first swing by compensation after the fault clearance,but also damp oscillations in the following swings quick-ly by making TCSC switch between on and off states.The simulation results of a one-machine infinitybus system show the effectiveness and superiority of the proposed control strategy.
作者
眭仁杰
薛峰
周野
吴峰
宋晓芳
陈学通
SUI Renjie;XUE Feng;ZHOU Ye;WU Feng;SONG Xiaofang;CHEN Xuetong(NARI Group Corporation,Nanjing 211100,China;College of Energy and Electrical Engineering,Hohai University,Nanjing 211100,China;NARI Technology Development Co.,Ltd.,Nanjing 211100,China)
出处
《电力系统及其自动化学报》
CSCD
北大核心
2018年第9期64-69,共6页
Proceedings of the CSU-EPSA
基金
国家电网公司科技项目(SCJS0000DKJS1501168)
关键词
暂态稳定性
可控串联补偿
暂态能量函数
阻尼振荡
控制策略
transient stability
thyristor controlled series compensation(TCSC)
transient energy function
damp oscil.lation
control strategy
