应用粗糙集分析电容型设备介损监测影响因素

Analysis of Capacitive Equipment tanδ Monitoring Influence Factors Using RS

为研究环境温度、湿度及电压等因素对电容型设备介质损耗因数(tanδ)在线监测数据的影响情况,在人工气候室内进行了变压器套管介质损耗因数的测量试验,将粗糙集简约理论引入到电容型设备tanδ在线监测影响因素的分析中,根据人工气候试验结果并结合粗糙集理论的分析方法,建立了分析电容型设备tanδ影响因素的决策表,通过决策表简约分析了环境温度、湿度以及电网电压对电容型设备的tanδ测量值的影响。分析结果表明:环境温度对电容型设备tanδ在线监测数据的影响最大,环境的湿度的影响也是比较明显的,而电压的影响则可以忽略。

In order to study the influence of environment temperature, humidity and power system voltage on capacitive equipment＇s dielectric loss factor （tanδ） data, the on-line tanδ monitoring test of transformer bushing was carried out in artificial climate chamber. And the rough set （RS） theory was inducted to analyze the influence of environment on the on-line tanδ monitoring data of capacitive equipment. Based on the test results of tanδ of transformer bushings in an artificial climate chamber, a decision table to analyze the influence of tanδ is built based on the rough set theory, and the effect of environment factors and voltage on the tanδ value of capacitive equipment was analyzed by the decision table reduction. The results shows that the influence of temperature is largest, and humidity is much more than the voltage, which can be ignored.