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高压电器  2015 

一起氧化锌避雷器爆炸事故分析

DOI: DOI:10.13296/j.1001-1609.hva.2015.08.032, PP. 192-196

Keywords: MOA,故障,电击穿,绝缘受潮

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Abstract:

避雷器是保证电力系统安全运行的重要保护设备之一,而氧化锌避雷器(metaloxidearrester,MOA)以其优异的电气性能逐渐代替其他类型的避雷器,成为电力系统的换代保护设备。文中介绍了一起典型的MOA故障情况,对故障相MOA进行了解体,并对造成MOA故障的原因进行了总结分析;同时,结合解体和运行工况详述了该次MOA发生爆炸击穿的原因,MOA自身设备的不良受潮是导致这次事故的主要原因。最后,提出了一些反事故措施及合理化建议,确保及时掌握避雷器的运行状况,预防同类事故再次发生。

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