基于超声波的GIS组合电器局部放电识别方法

Partial Discharge Recognition Method of GIS Combined Electrical Apparatus Based on Ultrasonic Wave

针对气体绝缘金属封闭开关设备(Gas Insulated Switchgear,GIS)组合电器局部放电识别方法在实际应用中存在故障识别准确率低的问题,对电网运行工作影响较大,为满足对GIS组合电器的故障检修需求,提出了基于超声波的GIS组合电器局部放电识别方法。通过用超声波检测器检测出超声信号,对GIS局部放电信号进行预处理,将得到的时序数据生成分类识别模型,实现对GIS组合电器局部放电信号的精准识别。实验结果证明采用提出的基于超声波的GIS组合电器局部放电识别方法识别的准确率始终保持在90%以上,应用效果较好,可应用于实际的GIS组合电器局部放电识别工作中,对GIS组合电器故障检测具有积极的推动意义。

At present,the method for partial discharge identification of Gas Insulated Switchgear(GIS)composite apparatus has the problem of low fault identification accuracy in practical application,which has a great impact on power grid operation.In order to meet the need of fault diagnosis and maintenance for GIS combined electrical apparatus,a partial discharge identification method based on ultrasonic wave for GIS combined electrical apparatus is proposed.The ultrasonic signal is detected by the ultrasonic detector,the GIS partial discharge signal is preprocessed,and the obtained time-series data is generated into a classification recognition model to realize the accurate recognition of the partial discharge signal of the GIS composite apparatus.The experimental results can prove that the recognition accuracy of the proposed method based on ultrasonic wave for partial discharge recognition of GIS combined electrical apparatus is always above 90%,and the application effect is good.It can be applied to the actual work of partial discharge recognition of GIS combined electrical apparatus,and has a positive significance in promoting the fault detection of GIS combined electrical apparatus.