摘要
基于顺次单支路工作模式的变压器式可控电抗器(controllable reactor of transformer type,CRT)具有良好的电压控制能力,但是CRT各控制绕组间耦合严重.在分析CRT解耦工作模式基本原理的基础上,提出基于CRT解耦工作模式的高压长距离输电线末端电压控制系统,并给出了控制器参数计算公式;采用查表法对工作绕组电流与各控制绕组晶闸管触发角之间的非线性关系进行线性化处理.仿真结果表明,提出的CRT电压控制系统可以实现CRT各控制绕组的解耦,并维持输电线路末端电压稳定.
Although controllable reactor of transformer type(CRT)based on sequential single branch operation mode has good voltage control capability,the coupling between CRT control windings is serious.Based on the analysis of the basic principle of CRT decoupling operation mode,a terminal voltage control system for high voltage and long distance transmission line was proposed,and the formulas of controller parameters were given.By using the look-up table method,the nonlinear relationship between the working winding current and the trigger angle of thyristor of each control winding was linearized.The simulation results show that the CRT voltage control system in this paper can maintain the voltage stability at the end of the transmission line while decoupling the control windings of CRT.
引文
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