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首页> 外文会议>Asia-Pacific Power and Energy Engineering Conference >The Partial Discharge Locating Experimental Study in Transformer Based onUltrasonic Phased Array
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The Partial Discharge Locating Experimental Study in Transformer Based onUltrasonic Phased Array

机译：基于变压器的onultrasonic序列阵列的局部放电定位实验研究

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摘要

Partial discharge locating detection is a key project in transformer insulation mechanism research and quality control. And it is an important foundation in transformer's condition maintenance. The theory of partial discharge location based on ultrasonic array is an effective improvement of partial discharge locating. But in experimental studies, the problem of sensor array element coupling performance is inconsistent, the results of many cross-point locations are also different, and the success rate and the locating accuracy in double-platform locating are not better than imagined. Based on these problems, three practical methods and techniques are presented in this paper. Firstly the pencil test method is used to test the coupling performance of the elements of the array sensor to improve the success rate of localization; secondly, taking repeated measurements at the same place and the weighted average method to improve the accuracy of measuring; thirdly the multi-platform and global search method are used to improve the positioning accuracy of PD source locating. Finally, the locating experimental system is established based on the ultrasonic phased array in oil. The Experimental results show that the locating errors is less than 10cm, verifies the three methods can effectively improve the partial discharge array ultrasound locating success rate and locating accuracy.
机译：局部放电定位检测是变压器绝缘机制研究和质量控制的关键项目。它是变压器状况维护的重要基础。基于超声阵列的局部放电位置理论是局部放电定位的有效改进。但是在实验研究中，传感器阵列元件耦合性能的问题不一致，许多交叉点位置的结果也不同，并且双平台定位中的成功率和定位精度并不优于图像。基于这些问题，本文提出了三种实用的方法和技术。首先，铅笔测试方法用于测试阵列传感器元素的耦合性能，以提高定位成功率;其次，在同一个地方进行重复测量和加权平均法以提高测量的准确性;第三，多平台和全局搜索方法用于提高PD源定位的定位精度。最后，基于油中的超声波相位阵列建立定位实验系统。实验结果表明，定位误差小于10cm，验证三种方法可以有效地改善局部放电阵列超声定位成功率和定位精度。

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