In this paper, a method based on the fuzzy theory and ultra-violet (UV) radiation measurement to acrncess the discharge status of external insulation of the insulator is presented. In this method, the amount of UV pulrnses generated by corona discharge of insulator is measured firstly, while collecting temperature of environment and rnhumidity information, and then the relationship between the inputs is confirmed by analyzing online monitoring darnta, a series of fuzzy sets for fuzzy reasoning is set up, and the membership function is derived, fuzzy inference rules rnare established. Then the fuzzy reasoning is carried out to estimate the discharge status of external insulation. Finalrnly, the validity of this method is verified by simulating and analyzing the data detected from the tests of connecting rnto grid in Simulink.%根据紫外测量法[5]获得的绝缘子放电强度,提出了采用模糊推理对绝缘子外绝缘放电状况进行评估的方法.该方法首先测量绝缘子电晕放电产生的紫外光脉冲数量,同时采集环境温度、湿度信息,根据在线监测的数据分析确定各输入量之同的关系,建立了一系列可用于模糊推理的模糊子集,并对其隶属度函数进行了推导,建立详尽的模糊推理规则,进行模糊推理,判断其外绝缘放电状况.最后,针对现场挂网试验数据,采用simulink进行仿真分析,验证了该方法的有效性.
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