摘要
随着新能源发电高比例接入配电网,400 V低压断路器无故误跳闸现象频发,对配电网运行可靠性造成较大影响。针对此问题,分析了低压断路器误跳闸的原因,并提出一种低压断路器自动重合闸技术以及脱扣器动作特性校验技术。现场试验证明,该方案能显著减少断路器误跳闸隐患,大幅提升配电网的安全性。
With the high penetration of new energy into distribution networks,unintended tripping of 400 V lowvoltage circuit breakers has become frequent,significantly affecting distribution network reliability.This paper analyzes the causes of such tripping and proposes an automatic reclosing technology for low-voltage circuit breakers and a trip unit operating characteristic verification technology.Field experiments demonstrate that this solution effectively reduces the risk of unintended tripping and enhances distribution network safety.
作者
孟琦斌
陆亭华
倪旭晖
施莹颖
MENG Qibin;LU Tinghua;NI Xuhui;SHI Yingying(State Grid Shanghai Electric Power Company Pudong Power Supply Company,Shanghai 201399,China)
出处
《电力与能源》
2025年第2期210-213,共4页
Power & Energy
关键词
低压断路器
误跳闸
重合闸
脱扣器
low-voltage circuit breaker
unintended tripping
reclosing
trip unit
作者简介
孟琦斌(1992-),男,高级工程师,主要从事配电运行工作。
