用红外热成像技术估计高压触点的危险率

T. Lindquist, L. Bertling
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引用次数: 17

摘要

红外热像仪是评估配电和输电系统中高压电接点状况的最常用方法。然而,热成像有一个主要缺点,即携带低负载或无负载的接触可能无法评估。本文提出了一种保存和利用热成像测量来估计电触点群体失效时间的统计分布参数的方法。然后可以使用统计分布来支持有时可能由于低负载而无法直接评估的大比例接触的维护决策。随着测量结果的积累,可以做出更准确的预测。所提出的方法是用三个测试案例应用于人口高压隔离与随机生成的热成像测量说明。本文的主要结论是,使用所提出的方法将为高压设备提供维护决策支持,这些设备可能无法直接通过热成像进行评估。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Hazard rate estimation for high-voltage contacts using infrared thermography
Infrared thermography is the most common way to assess the condition of high-voltage electrical contacts in electric distribution and transmission systems. However, thermography has one major drawback as contacts carrying low or no load may not be assessed. This paper proposes a method to save and make use of thermography measurements to estimate statistical distribution parameters for the time to failure for a population of electrical contacts. The statistical distributions may then be used to support maintenance decisions for the sometimes large proportion of contacts that may not be assessed directly due to low load. As the measurement results accumulate over the years more accurate predictions can be made. The proposed method is illustrated using three test cases applied to a population of high-voltage disconnectors with randomly generated thermography measurements. The main conclusion of the paper is that using the proposed method will provide maintenance decision support for high-voltage apparatus that may not be assessed directly by thermography.
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