某企业35 kV系统PT单相烧损的技术分析

Technical Analysis of PT Single Phase Burning Loss in 35 kV System of An Enterprise

对于中性点非直接接地系统的弧光接地过电压,对设备绝缘破坏巨大,往往给企业安全生产带来很大损失。尤其是频繁的弧光过电压,对系统内绝缘薄弱的设备的损坏更为严重,通过一起单相PT烧损事故进行技术分析。

For the neutral point, the arc grounding overvoltage of the non direct grounding system causes great damage to the insulation of the equipment, and often brings great losses to the safety of the enterprise. Especially the frequent arc over-voltage, the damage to the equipment which is weak in the system is more serious. In this paper, a single-phase PT burning accident is analyzed.