基于双光谱辐射特性的绝缘异常放电检测方法研究  

Detection Approach of Abnormal Discharges Based on Dual-spectral Radiation Characteristics

作　　者：张弛[1,2] 曹梦 何金 朱旭亮 陈荣 满玉岩[3] ZHANG Chi;CAO Meng;HE Jin;ZHU Xuliang;CHEN Rong;MAN Yuyan(State Grid Tianjin Electric Power Company Electric Power Research Institute,Tianjin 300384,China;Tianjin Key Laboratory of Internet of Things in Electricity,Tianjin 300384,China;State Grid Tianjin Electric Power Company,Tianjin 300232,China)

机构地区：[1]国网天津市电力公司电力科学研究院,天津300384 [2]天津市电力物联网企业重点实验室,天津300384 [3]国网天津市电力公司,天津300232

出　　处：《绝缘材料》2021年第9期79-85,共7页Insulating Materials

基　　金：国网天津市电力公司科技项目(kj20-1-17)。

摘　　要：基于绝缘异常放电的辐射光谱特征提出一种双光谱放电检测方法。通过实验获得电晕放电、火花放电和电弧放电模式下的光谱分布特征差异,据此研制出基于固态雪崩面阵的双光谱传感器,并应用该传感器对双光谱特征与放电能量的演化关系进行研究,然后总结基于双光谱强度占比的放电危险性量化判据。结果表明:3种放电模式下光辐射存在一定的极性效应,双光谱强度比率与放电强度之间呈现强相关性,且低能放电和高能放电的双光谱占比变化范围几乎不存在交集,这可以作为判断局部放电或电弧放电的有效判据,为设备异常放电的光学监测与诊断提供思路。On the basis of radiation spectral characteristics of insulation abnormal discharges,a dual-spectral discharge detection method was proposed.The differences of spectral distribution characteristics under corona discharge,spark discharge,and arc discharge were obtained through experiments,and a dual-spectral sensor based on solid avalanche array was developed.The evolutional relationship between the dual-spectral characteristics and discharge energy was studied using this sensor,and then the discharge hazard quantification criteria based on dual spectral intensity ratio was summarized.The results show that the light radiation under three kinds of discharge modes has a certain polarity effect.There is a strong correlation between the dual-spectral intensity ratio and the discharge intensity,and there is almost no intersection for the variation range of dual-spectral ratio of low-energy discharge and high-energy discharge,which can be used as an effective criterion to judge partial discharge or arc discharge,and provide a new approach for the optical monitoring and diagnosis of abnormal discharges in equipment.

关 键 词：局部放电 双光谱监测 弧光监测 光电检测 光谱分析 

分 类 号：TM591[电气工程—电器]