盛骏,楼钢
SHENG Jun,LOU Gang(Jinhua Electric Power Bureau

• 1:金华电业局

摘要(Abstract)：

介绍了在金属铠装柜内部缺陷检测中采用TEV信号法的原理和实际应用,分析了检测和判断的注意事项。实践表明,TEV信号法对金属铠装柜内部的隐蔽绝缘缺陷有较高的灵敏度,根据传感器对信号的优先分辨率和电磁波在大气中的传播速度,可以对故障进行定位,对于及时发现金属铠装柜的绝缘缺陷和防止缺陷扩大有着积极的指导作用。
This paper introduces the principles and application of Transient Earth Voltage(TEV) method to the test of internal defects in the metal-clad switch cabinet,analyzes the cautions on the test and diagnosis.The practice proves that the method is highly sensitive to concealed insulation defects in the metal-clad switch cabinet.Fault identification is available according to the prioritized signal identification with the sensor and the spreading velocity of electromagnetic wave in atmosphere.And it can serve as a reference for prompt identification and prevention of the insulation faults.

关键词(KeyWords)： TEV;金属铠装柜;局部放电;分析
transient earth voltage;metal-clad switch cabinet;partial discharge;analysis

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 盛骏,楼钢
SHENG Jun,LOU Gang(Jinhua Electric Power Bureau

DOI: 10.19585/j.zjdl.2012.04.001

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