A Method for PD Ultrasonic Array Location Based on Multi-Platform Measuring Direction and Global Search
Xie, Qing1, Lü Fangcheng1, Li Yanqing1, Huang Huaping1, Li Ningyuan1, Tan Xiangyu2
1.Hebei Provincial Key Laboratory of Power Transmission Equipment Security Defense North China Electric Power University Baoding 071003 China 2.Xi’an Jiaotong University Xi’an 710049 China
Abstract：PD locating detection is a key project in electrical equipment insulation mechanism research and quality control. Emphasized much by the power department, it is an important foundation in transformer’s condition maintenance. Based on the errors of “noncoplanar disjoint line” and the “cumulative errors”in the method of “locating cross”, and the principle of multi-platform locating principle and global search with cloud optimization, a novel method to locate the PD in transformer is presented. According to the direction angle and elevation angle of multiple locating lines and the known coordinates of sensors, the PD source is referred to the point from which the sum of distance in space to all the locating lines is the minimum value. Then global search the min-distance function with cloud theory optimization algorithm (CTOA) to obtain the accurate geometric space coordinates of PD source. Finally, a PD ultrasonic array location experimental system is build, and extensive experiment research are conducted, the results of the research verify the accuracy and superiority of the method.
谢庆, 律方成, 李燕青, 黄华平, 李宁远, 谭向宇. 基于多平台测向及全局搜索的局部放电超声阵列定位方法[J]. 电工技术学报, 2011, 26(11): 217-221.
Xie, Qing, Lü Fangcheng, Li Yanqing, Huang Huaping, Li Ningyuan, Tan Xiangyu. A Method for PD Ultrasonic Array Location Based on Multi-Platform Measuring Direction and Global Search. Transactions of China Electrotechnical Society, 2011, 26(11): 217-221.
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2011, Vol. 26 
