改进型换流站直流控制从系统触发角补偿控制策略  

An Improved Trigger Angle Compensation Control Strategy for DC Control Standby System of Converter Station

作　　者：龚凌云 黄智 侯贺伟 王旋 徐志艳 GONG Lingyun;HUANG Zhi;HOU Hewei;WANG Xuan;XU Zhiyan(State Grid Zhejiang Maintenance Branch Company,Hangzhou 311232,China)

机构地区：[1]国网浙江省电力有限公司检修分公司

出　　处：《浙江电力》2019年第8期54-58,共5页Zhejiang Electric Power

基　　金：国网浙江省电力有限公司科技项目(5211MR18001C)

摘　　要：换流站直流控制系统通常采用“一主一备”的双重化配置,当主系统出现故障时,从系统自动切换为主系统。由于测量误差等因素,从系统输出的触发角会与主系统出现偏差,目前大多数直流控制系统从系统采用一种基于PI(比例积分)控制原理的补偿控制策略来消除偏差,但补偿效果不理想。基于原补偿控制策略提出了一种改进型从系统触发角补偿控制策略,并利用RTDS仿真系统验证了所提补偿控制策略的有效性,无论从系统处于何种运行状态都能起到很好的跟从主系统效果。DC control system adopts a dual configuration principle of"one main and one standby".When the main system fails,the standby system automatically switches to the main system.Due to the measurement error,the output trigger angle of the standby system deviates from that of the main system.In order to eliminate such deviation,a compensation control strategy based on the PI(proportional integral)control principle is applied in most DC control standby system,but the compensation is not favorable.In this paper,based on the original compensation control strategy,an improved standby system compensation control strategy is proposed,and the proposed strategy is proved to be effective by RTDS simulation system,and the standby system can better follow the main system under any operating condition.

关 键 词：直流控制系统 双重化配置 触发角 PI控制 补偿控制 

分 类 号：TM721.1[电气工程—电力系统及自动化]