TCIPC并联MOV后对其暂态过程的影响  

Influence of TCIPC with parallel MOV on transient process

作　　者：李娟[1] 刘玉娇[1] 王昕冉[1] 刘海龙[1] 崔红兰 

机构地区：[1]东北电力大学电气工程学院,吉林吉林132012

出　　处：《电力自动化设备》2014年第8期98-103,共6页Electric Power Automation Equipment

摘　　要：可控相间功率控制器(TCIPC)并联金属氧化物限压器(MOV)可以对其接入电网潮流控制中可能出现的过电压进行保护,但MOV的并入对TCIPC运行模式变化的暂态过程具有一定的影响。针对此问题,基于TCIPC的基本结构,对TCIPC过电压出现的机理进行探讨,建立TCIPC并联MOV后的动态模型。以功率为参考,选定TCIPC入口母线电压以及线路电流作为控制器的协调分量,设计PI校正阻抗控制器。并以两等值电网经TCIPC交流弱联系为例,仿真分析说明TCIPC并联MOV后会使系统的潮流调控能力下降,恢复稳定的暂态过渡过程时间延长。The over-voltage caused by TCIPC（Thyristor-Controlled Interphase Power Controller） in grid power control can be suppressed by connecting MOV（Metal Oxidized Varistor） in parallel to it,but the parallel MOV will influence the transient process of its operating mode change. The mechanism of TCIPC over- voltage is explored based on its basic structure and the dynamic model of TCIPC with parallel MOV is established. The PI correction impedance controller is designed,which,with the power as the reference, takes the entrance bus voltage of TCIPC and the line current as the coordination components. The simulative analysis for two equivalent power that,the power flow regulating capability of systems with weak AC interconnection via TCIPC shows system is reduced and the transient process of stability restoration is prolonged.

关 键 词：互联电网 灵活交流输电系统 可控相间功率控制器 金属氧化物变阻器 暂态分析 过电压 

分 类 号：TM712[电气工程—电力系统及自动化]