电测与仪表2016，Vol.53Issue(21)：106-109,4.
电压互感器断线对距离保护影响及应对措施研究
The effect of PV disconnection on distance protection and the countermeasure
摘要
Abstract
The distance protection is affected by the transformer greatly .The effect of PV on distance protection is an-alyzed in detail in this paper , and the analysis result shows that the distance protection may mis-operate during PV disconnection.Then, a new synchronous method , which is based on whether negative sequence voltage , or phase voltage component and current component is started at the same time to discriminate the PV disconnection , is proposed in order to ensure the reliable locking of the distance protection .The PSCAD/EMTDC-based simulation results prove the correctness of the method .关键词
距离保护/PV断线/负序电压/同步法Key words
distance protection/PV disconnection/negative voltage/synchronous method分类
信息技术与安全科学引用本文复制引用
葛君山,王永慧..电压互感器断线对距离保护影响及应对措施研究[J].电测与仪表,2016,53(21):106-109,4.基金项目
2015年江苏省高校实验室研究会立项资助研究课题（GS2015YB22）． （）
