摘要
研究了混合型负荷支路实时漏电监测方法及实现。通过支路负荷状态辨识提出了一种固有剩余电流差异化补偿方法。运用差异化补偿,提出了混合型负荷支路的稳态剩余电流判据和剩余电流增量判据组成的复合判据,提高了支路在不同负荷状态下漏电的辨识灵敏度。通过江苏电网的现场实践验证了所提方法能够适应混合型负荷支路的负荷状态变化,有效识别漏电故障,提升了变电站站用电系统混合型负荷支路的运维水平。
The real-time leakage monitoring method and implementation of hybrid load branch are studied. Firstly, a differential compensation method of inherent residual current is proposed through branch load state identification. Using differential compensation, a composite criterion composed of steadystate residual current criterion and residual current increment criterion of hybrid load branch is proposed, which improves the identification sensitivity of branch leakage under different load states. Through the field practice of Jiangsu power grid, it is verified that the proposed method can adapt to the load state change of hybrid load branch, effectively identify leakage faults, and improve the maintenance level of hybrid load branch in self-using power system.
作者
陈昊
崔运光
马兆兴
姚凯
CHEN Hao;CUI Yun-guang;MA Zhao-xing;YAO Kai(State Grid Jiangsu Electric Power Co.,Ltd.,EHV Branch Company,Jiangsu Nanjing 211102,China;School of Information and Control Engineering,Qingdao University of Technology,Shandong Qingdao 266520,China)
出处
《消防科学与技术》
CAS
北大核心
2022年第6期739-743,共5页
Fire Science and Technology
基金
国家自然科学基金项目(51807028)
山东省自然科学基金面上项目(ZR2020ME194)。
关键词
变电站
混合型负荷支路
剩余电流
漏电监测
hybrid load branch
residual current
differential compensation
leakage current monitoring
intelligent maintenance
