基于整流侧最大触发角限制的直流输电连续换相失败抑制方法  

Suppression Method for Continuous Commutation Failure in DCTransmission Based on the Maximum Trigger Angle Restriction at the Rectifier Side

作　　者：李瑞鹏 唐兵 褚铃杰 常晓勇 Li Ruipeng;Tang Bing;Chu Lingjie;Chang Xiaoyong(Changzhou Power Supply Branch,State Grid Jiangsu Electric Power Co.,Ltd.,Changzhou Jiangsu 213003,China;Changzhou Institute of Technology,Changzhou Jiangsu 213032,China)

机构地区：[1]国网江苏省电力有限公司常州供电分公司,江苏常州213003 [2]常州工学院,江苏常州213032

出　　处：《电气自动化》2024年第3期56-59,共4页Electrical Automation

摘　　要：直流输电首次换相失败一般难以避免,但是可以采取一定的措施抑制连续换相失败。根据直流控制系统和等值电路,提出了整流侧换流器最大触发角计算公式,在逆变侧交流系统故障后及时根据计算结果对整流侧换流器最大触发角进行限制,可抑制直流输电连续换相失败。在PSCAD/EMTDC中搭建CIGRE HVDC标准测试模型进行仿真测试,测试结果验证了所提方法有效性,且适当增大限制程度,抑制成功率将增加。The first commutation failure of direct current transmission is generally difficult to be avoided,but certain measures can be taken to suppress continuous commutation failure.Based on the DC control system and equivalent circuit,a formula was proposed for calculating the maximum triggering angle of the converter at the rectifier side.After a fault occured in the AC system at the inverter side,the maximum triggering angle of the converter at the rectifier side can be restricted in a timely manner according to the calculation results,which can suppress the continuous commutation failure of DC transmission.A CIGRE HVDC standard test model was built in PSCAD/EMTDC for simulation testing,and the test results verified the effectiveness of the proposed method,with appropriately increased degree of limitation and the successful rate of suppression.

关 键 词：高压直流输电 故障暂态 连续换相失败 整流侧 最大触发角 抑制措施 

分 类 号：TM72[电气工程—电力系统及自动化]