主管:中华人民共和国应急管理部
主办:应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU

消防科学与技术 ›› 2022, Vol. 41 ›› Issue (6): 739-743.

• • 上一篇    下一篇

变电站站用电系统混合型负荷支路的漏电监测方法

陈 昊1,崔运光1,马兆兴2,姚 凯1   

  1. (1.国网江苏省电力有限公司超高压分公司,江苏 南京 211102; 2.青岛理工大学 信息与控制工程学院,山东 青岛 266520)
  • 出版日期:2022-06-15 发布日期:2022-06-15
  • 作者简介:陈 昊(1980-),男,江苏南京人,国网江苏超高压公司变电二次运检师,国网公司保护装置运维首席专家,高级技师,研究员级高工,博士,主要从事变电智能运检方面的研究,江苏省南京市江宁区苏源大道56号,211102。
  • 基金资助:
    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)

Leakage monitoring method of hybrid load branch of the self-using power system in substation

CHEN Hao1, CUI Yun-guang1, MA Zhao-xing2, YAO Kai 1   

  1. (1. State Grid Jiangsu Electric Power Co., Ltd., EHV Branch Company, Jiangsu Nanjing 211102, China; 2. School of Information and Control Engineering, Qingdao University of Technology, Shandong Qingdao 266520, China)
  • Online:2022-06-15 Published:2022-06-15

摘要: 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。

关键词: 关键词:变电站, 混合型负荷支路, 剩余电流, 漏电监测

Abstract: Abstract: 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 steady-state 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.

Key words: Key words: hybrid load branch, residual current, differential compensation, leakage current monitoring, intelligent maintenance