摘要
在现代电力系统中，中性点过电压问题一直是影响电网安全稳定运行的关键因素之一。随着电力系统规模的不断扩大和电压等级的逐步提升，中性点过电压现象愈发复杂多样，其危害也日益显著。过电压不仅可能导致电气设备绝缘损坏，还可能引发系统故障，甚至造成大面积停电事故。因此，深入研究电力系统中性点过电压的形成机理、特性分析以及有效的保护技术，对于保障电力系统的安全可靠运行具有极其重要的理论和现实意义。
关键词： 电力系统；中性点；过电压；保护技术；智能监测
Abstract
In modern power systems, the problem of neutral point overvoltage has always been one of the key factors affecting the safe and stable operation of the power grid. With the continuous expansion of the power system scale and the gradual improvement of voltage levels, the phenomenon of neutral point overvoltage has become increasingly complex and diverse, and its harm has become increasingly significant. Overvoltage can not only cause insulation damage to electrical equipment, but also lead to system failures and even cause widespread power outages. Therefore, in-depth research on the formation mechanism, characteristic analysis, and effective protection technology of neutral point overvoltage in power systems is of great theoretical and practical significance for ensuring the safe and reliable operation of power systems.
Key words： Power system; Neutral point; Overvoltage; Protecting technology; Intelligent monitoring
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