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 DC Transmission Based on the Maximum Trigger Angle Restriction at the Rectifier Side
李瑞鹏 1唐兵 1褚铃杰 1常晓勇2
作者信息
- 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
- 折叠
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.
Abstract
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Key words
HVDC transmission/fault transient/continuous commutation failure/rectifier side/maximum trigger angle/suppression measures引用本文复制引用
出版年
2024
NETL
NSTL
万方数据