电力系统保护与控制2011，Vol.39Issue(24)：65-71,7.
高压直流输电换相失败对交流线路保护的影响(二)直流换相失败瞬态特征分析及对交流线路保护的影响
Study on influence of HVDC commutation failure on AC line protection Part two: analysis of fault transient response characteristics and influence of HVDC commutation failure on AC line protections
摘要
Abstract
Based on the whole built electromagnetic transient model of Shandong grid in PSCAD environment, the article analyses the influence of commutation failure caused by different kinds of short circuit faults of AC lines in different locations on AC system fault transient response characteristics. Considering the actual installation of line protections in Shandong power grid, the models of three kinds of line protection are built by Fortran, I.e. RCS901 (directional protection based on variation of power frequency components), PSL602 (pilot distance protection) and RCS931 (differential protection). Then the influence on line protections near Qingdao converter station is studied after the operation of ±660 kV HVDC transmission project between Ningxia and Shandong in 2010. The simulation results show that the current in the parallel line of fault line distorts greatly during HVDC commutation failure and the distortion is the most serious when the single-phase grounding short-circuit fault occurs in the middle of the line. Moreover, directional protection for non-fault line which is in parallel with fault line is affected greatly, while the effect on the other two protections is less.关键词
换相失败/瞬态特征/线路保护/动作特性/纵联方向保护/纵联距离保护/纵联差动保护Key words
commutation failure/ fault transient response characteristics/ line protection/ performance characteristics/ pilot directional protection/ pilot distance protection/ pilot differential protection分类
信息技术与安全科学引用本文复制引用
雷虹云,于占勋,赵强,赵成勇,黄德斌,朱倩茹,张汝莲..高压直流输电换相失败对交流线路保护的影响(二)直流换相失败瞬态特征分析及对交流线路保护的影响[J].电力系统保护与控制,2011,39(24):65-71,7.基金项目
高等学校学科创新引智计划资助项目(B08013) （B08013）
