相线中性线短路故障及其保护的探讨Discussion on the Phase-to-neutral Short-circuit Fault and its Protection Method
张建明;
ZHANG Jianming;Henan Water & Power Engineering Consulting Co.,Ltd;
摘要(Abstract):
在市政等工程中,特别是景观、道路照明等长距离供电工程中,重点基本侧重于相间短路故障、接地故障保护及防电击防护措施,而忽略了对相线中性线短路故障灵敏度校验。本文通过分析相线中性线短路故障时故障电压、电流特性及其危害,提出了相应的保护措施。
In municipal engineering, especially in long-distance power supply projects such as landscape and road lighting, the focus is basically on phase-to-phase short-circuit faults, earth fault protection, and anti-shock protection measures, while the sensitivity check for phase-to-neutral short-circuit faults are ignored. This article analyzes the voltage and current characteristics of the phase-to-neutral short-circuit fault and their hazards. In addition, corresponding protection measures are proposed.
关键词(KeyWords):
短路故障;中性线;接地故障;过电压
short-circuit faults;neutral condutor;earth fault;overvoltage
基金项目(Foundation):
作者(Authors):
张建明;
ZHANG Jianming;Henan Water & Power Engineering Consulting Co.,Ltd;
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