摘要
目前,高压直流输电在我国得到了充分的发展,其输电线路较长,增加了故障的几率。针对目前高压直流输电线路保护广泛常用的两种行波保护方案分析,指出SIEMENS行波保护和ABB行波保护存在的不同程度缺点和不足,对行波保护难以检测远端高阻接地故障的问题提出相应的进行改进,提出保护动作性能更优越的保护方案,确保电网运行的安全和稳定。基于PSCAD/EMTDC仿真结果验证了改进行波保护方案的可行性。
According to the analysis of two sets of traveling wave protection in HVDC transmission line, the paper gave out the weak-nesses of SIEMENS traveling wave protection and ABB traveling wave protection, improved the traveling wave protection in the long dis-tance high resistance earth fault and proposed better protection plan to ensure the security and stability of power grid operation. The simulation results on PSCAD/EMTDC had justified the feasibility of improved traveling wave protection plan.
出处
《贵州电力技术》
2013年第4期6-9,25,共5页
Guizhou Electric Power Technology
关键词
高压直流
行波保护
高阻接地
改进方案
HVDC
traveling wave protection
high resistance earth
improvement plan
