含柔性直流输电系统的交流线路保护适应性分析  

Adaptability Analysis of AC Line Protection with Flexible HVDC Transmission System

作　　者：谢华[1] 姜崇学 赵青春[1] 王玉龙[1] 徐晓春[1] 戴光武[1] 

机构地区：[1]南京南瑞继保电气有限公司,江苏南京211102

出　　处：《供用电》2017年第8期17-22,共6页Distribution & Utilization

基　　金：中国南方电网公司贵州电网有限责任公司科技项目(GZDWGZHBG-16-75)~~

摘　　要：含柔性直流输电系统故障情况下交流线路电气特征与纯交流系统以及常规交直流系统均存在较为明显差异,因此对于其近区交流线路保护带来一定影响。柔性直流输电系统难以采用简单的解析表达式描述各种情况下物理特性,在理论分析基础上,基于工程化模型的仿真测试结果,针对交流线路保护中目前配置的典型距离和零负序等元件适应性进行详细仿真分析及评估,从而系统阐述此类元件在含柔性直流输电系统中动作特性。通过对各类保护性能分析,有助于采取针对性的措施保障该系统稳定可靠运行。With the special electrical characteristics of VSC-HVDC transmission system,the AC line protection has been affected. It is difficult to use simple analytical expressions to describe the physical characteristics of VSC-HVDC,based on the theoretical analysis and simulation test,the adaptability of typical elements such as distance and zero negative sequence protection in VSC-HVDC system are analyzed in detail. The behavior of such components in VSC-HVDC systems is also described. Through the analysis of various protection performance,it is helpful to take specific measures to ensure the stable and reliable operation of the system.

关 键 词：柔性直流输电 线路保护 距离保护 负序保护 低电压穿越 

分 类 号：TM77[电气工程—电力系统及自动化]