TCSC对电力系统失步振荡中心迁移的影响  

Influence of TCSC on migration of out-of-step oscillation centre in power system

作　　者：何静波[1] 任建文[1] 董晓晶[2] 周宗川[2] 任大江[2] 高建涛[3] 宋云亭[4] DING Jian 

机构地区：[1]华北电力大学(保定),河北保定071003 [2]国网宁夏电力公司经济技术研究院,宁夏银川750011 [3]国网连云港供电公司,江苏连云港222004 [4]中国电力科学研究院,北京100085

出　　处：《宁夏电力》2016年第3期8-15,70,共9页Ningxia Electric Power

基　　金：国家电网公司科技项目“基于大数据技术的大电网稳定态势量化评估与自适应防控关键技术研究”(XT71-15-056)

摘　　要：针对柔性交流输电系统(Flexible AC Transmission System,FACTS)装置可能导致电力系统振荡中心迁移的问题,研究分析了可控串联补偿(Thyristor Controlled Series Compensation,TCSC)对失步振荡中心迁移的影响;将等值两机系统中推导出的振荡中心位置公式与TCSC机电暂态模型中阻尼振荡环节的电压/功率控制比例相结合,说明了TCSC电压控制比例对振荡中心迁移的影响机理,并在一个等值两端系统和实际西北电网中进行了仿真验证。理论分析和仿真结果表明:随着TCSC阻尼振荡环节的电压控制比例系数的增大,振荡中心往远离TCSC的方向迁移。Considering the problem that flexible AC transmission system（FACTS） devices may causethe migration of oscillation center during out- of- step oscillation of power system, analyzes theinfluence on thyristor controlled series compensation（TCSC） on migration of out-of-step oscillationcenter. Combining with the location formula of out- of- step oscillation centre derived from twomachineequivalent system model and the ratios of voltage/active power control of damped oscillationin TCSC electromechanical transient model, illustrates the mechanism of TCSC’s impact on out-ofsteposcillation centre migration in power system. Then makes simulations on a equivalent two-end test system and China Northwest power grid to verify the theoretical analysis. The simulation resultshows that as the increase of the ratio of voltage control in the link of TCSC damped oscillation, theout-of-step oscillation centre moves away from the location of TCSC.

关 键 词：TCSC 振荡中心迁移 等值两机系统 西北电网 

分 类 号：TM72[电气工程—电力系统及自动化]