基于边缘计算的配电网过电压在线识别装置  

Online Identification Device for Overvoltage in Power Distribution Network Based on Edge Computing

作　　者：吕超[1] 贾俊青[1] 周佳 武天宇 LÜChao;JIA Junqing;ZHOU Jia;WU Tianyu(Inner Mongolia Electric Power Research Institute,Huhhot 010020,Nei Monggol,China;Inner Mongolia Ultra High Voltage Power Supply Bureau,Huhhot 010080,Nei Monggol,China)

机构地区：[1]内蒙古电力科学研究院,内蒙古呼和浩特010020 [2]内蒙古超高压供电局,内蒙古呼和浩特010080

出　　处：《电气传动》2022年第9期74-80,共7页Electric Drive

摘　　要：人工智能算法、边缘计算技术的快速发展,为研制识别率更高、智能化更强的新型配电网过电压识别装置奠定了基础。提出了一种基于边缘计算的配电网过电压识别软硬件系统设计方法。在硬件上采用多级运放设计了适于高带宽、高精度高压分压器的信号调理电路,利用高速数据采集卡实现了配电网三路电压信号的同步实时采集,以带神经网络处理器(NPU)的嵌入式处理器为基础构建了边缘计算数据处理单元,用于过电压数据的处理和类型识别,使用4G通信传输过电压类型和过电压故障数据。在软件上,提出了一种基于功率小波变换和卷积神经网络人工智能算法的过电压识别方法并利用高性能神经网络推理引擎予以实现。采用高压实验和故障注入法对所设计的新型配电网过电压识别装置进行了实验验证,实验结果表明该装置不仅可以实现过电压数据的高速准确采集,而且数据处理时间更短、识别准确率更高。The rapid development of artificial intelligence algorithm and edge computing technology has laid a foundation for the development of a new type of over-voltage identification device of distribution network with higher identification rate and stronger intelligence.A design method of hardware and software system for overvoltage identification in distribution network based on edge computing was proposed.In hardware,a signal conditioning circuit suitable for high bandwidth and high precision voltage divider was designed by using multistage operational amplifie,the synchronous real-time acquisition of three voltage signals in distribution network was realized by using high-speed data acquisition card,an edge computing data processing unit was constructed based on an embedded processor with neural-network processing unit(NPU)to be used for over voltage data processing and type identification,4G communication was used to transmit overvoltage type and overvoltage fault data.In software,a method of overvoltage identification based on power wavelet transform and convolutional neural network artificial intelligence algorithm was proposed and implemented by using high-performance neural network reasoning engine.High voltage experiment and fault injection method were used to verify the new over-voltage identification device designed for distribution network.The experimental results show that the device can not only realize high-speed and accurate acquisition of over-voltage data,but also the data processing time is shortened and identification accuracy is higher.

关 键 词：配电网 过电压识别 边缘计算 卷积神经网络 

分 类 号：TM46[电气工程—电器]