Partial discharge estimation based on radiometric and classical measurements
Partial discharge estimation based on radiometric and classical measurements
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基于辐射测量和经典测量的局部放电估计
DOI：
10.1109/i2mtc.2012.6229445
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
I. Glover
中科院分区：
文献类型：
--
作者：
E. C. T. de Macedo;J. D. S. de Souza Neto;J. Moises;M. Villanueva;E. C. Guedes;R. Freire;I. Glover
局部放电 (PD) 的特点是高压 (HV) 设备内部出现高频电流脉冲。它涉及绝缘体内的气体电离过程，因此可以指示绝缘缺陷。在工厂安全运行的背景下，低水平的局放不一定是紧急问题，但它们可能会随着时间的推移而逐渐增加，直到发生完全放电（闪络），导致灾难性的工厂故障。因此，在高压设备的使用寿命期间（通常定期）监测局部放电水平及其发生情况。本文比较了使用三种不同技术进行的局放测量：IEC 60270 [1] 中描述的“经典”方法、高频电流互感器 (HFCT) 方法和自由空间辐射测量 (FSR) 方法。进行比较的目的是评估用其他更方便/更便宜的方法替代经典定量方法的实用性。
Partial Discharge (PD) is characterized by high frequency current pulses that occur in the interior of high voltage (HV) apparatus. It involves gas ionization processes within insulators and can therefore indicate insulation defects. Low levels of PD are not necessarily of urgent concern in the context of safe operation of plant but they may gradually increase with the time, until complete discharge (flashover) occurs causing catastrophic plant failure. PD levels and their occurrence are therefore monitored (usually periodically) during the operational lifetime of HV equipment. This paper compares PD measurements made using three different techniques: the `classical' method described in IEC 60270 [1], the high frequency current transformer (HFCT) method and a free-space radiometric (FSR) method. The comparison is made with a view assessing the practicality of replacing the classical quantitative method with other more convenient/cheaper methods.