摘要
换相失败是高压直流输电系统常见的故障之一。对晶闸管关断过程的数学模型进行了分析,提出一种基于关断过程能量的换相失败判别方法,并给出相应的判据条件。在PSCAD中搭建仿真模型,将所提判据与实际换相结果进行对比验证,仿真结果验证了所提判据的正确性和有效性。
Commutation failure is one of the common failures in HVDC transmission systems. The mathematical model of the turn-off process of the thyristor is analyzed,and a method for judging the commutation failure based on the energy of the turn-off process is proposed,and the corresponding criterion conditions are given. A simulation model is built in PSCAD,and the proposed criterion is compared with the actual commutation results.The simulation results verify the correctness and effectiveness of the proposed criterion.
作者
杨更宇
YANG Gengyu(State Grid Shaoxing Power Supply Company,Shaoxing 312000,Zhejiang,China)
出处
《电气传动自动化》
2022年第1期7-10,共4页
Electric Drive Automation
关键词
换相失败
关断过程
能量
commutation failure
turn-off process
energy
