银东直流逆变站换相失败分析及措施  

Commutation Failure Analysis and Measurements of Yindong HVDC System

作　　者：张同乔[1] 李真[1] 沈倩[1] 孙英涛[1] 于大洋[2] 

机构地区：[1]济南供电公司,山东济南250011 [2]山东大学电气工程学院,山东济南250061

出　　处：《山东电力高等专科学校学报》2012年第6期6-8,共3页Journal of Shandong Electric Power College

摘　　要：换相失败是直流输电常见故障,它会导致直流电压降低、换流阀寿命缩短等问题。本文在电磁暂态仿真软件PSCAD中建立了山东电网银东直流输电系统模型,分析了山东电网故障对银东直流输电系统的影响,并讨论了预防换相失败的措施。Commutation failure is one of the most common faults for HVDC system. It may cause undesirable consequences such as DC voltage reduction, and shorten the life span of the converter valve. The equivalent model of Shandong POWER GRID and Yindong HVDC in PSCAD is established. Effect on Yindong HVDC system under single-phase shortcircuit faults in Shandong Power Grid is analyzed, and some measures to prevent commutation failure are discussed.

关 键 词：高压直流输电 换相失败 

分 类 号：TM711[电气工程—电力系统及自动化]