一起110kV变压器跳闸事故原因分析

Analysis on an accident of 110kV transformer trip

变压器是一个工厂的重要设备。为工厂提供可靠的电力,是保证工厂正常生产的必要条件。而避雷器是保证电力系统安全运行的重要保护设备之一。本文详细介绍了某化工厂新投运110kV变压器差动保护、重瓦斯动作跳闸情况,对变压器本体上避雷器进行了拆卸解体,发现避雷器内锥炸裂,对其原因进行了分析总结,并对变压器本体上安装此类避雷器提出了一些合理化建议。

The transformer is an important equipment in a factory, providing reliable power for the factory, which is guaranteed the normal production of the factory. The lightning arrester is one of the important protection equipment to ensure the safe operation of power system. This paper introduces a 110 kV transformer tripping for differential protection and the heavy gas movement, demolition lightning arrester on the transformer, found that the cone of arrester was cracked, and analyzed the causes. Finally put forward some reasonable suggestions of such lightning arrester installed on the transformer.