基于深层次CNN的中压配电网过电压抑制系统  

Overvoltage suppression system for medium voltage distribution network based on deep CNN

作　　者：王恩伟 曾惜 赵筑雨 WANG Enwei;ZENG Xi;ZHAO Zhuyu(Guiyang Power Supply Bureau of Guizhou Power Grid Co.,Ltd.,Guiyang 550002,China;Power Grid Planning and Research Center of Guizhou Power Grid Co.,Ltd.,Guiyang 550002,China;Guizhou Qianchi Information Co.,Ltd.,Guiyang 550002,China)

机构地区：[1]贵州电网有限责任公司贵阳供电局,贵州贵阳550002 [2]贵州电网有限责任公司电网规划研究中心,贵州贵阳550002 [3]贵州黔驰信息股份有限公司,贵州贵阳550002

出　　处：《电子设计工程》2024年第20期31-34,39,共5页Electronic Design Engineering

基　　金：2017贵州省科技计划项目(黔科合支撑【2016】2031)。

摘　　要：中压配电网运行环境复杂,存在较大安全隐患,且其负载变化较为频繁,电压类型识别难度较大,使得过电压难以有效抑制。为此,设计基于深层次CNN的中压配电网过电压抑制系统。设计过电压信号采集器和滤波模块,利用HHT带通滤波处理中压配电网过电压波形。基于深层次CNN设计过电压类型识别模型,识别不同中压配电网过电压波形类型。设计末端并联R-APF,改变增益系数,调节需要抑制的负荷阻抗。在线路节点处分别增设一个有源电力滤波器,稳定增益系数的改变值。测试结果表明,通过该系统能够实现三相电压的有效过电压抑制。The operation environment of medium voltage distribution network is complicated,there are big security risks,and its load changes frequently,and it is difficult to identify voltage type,which makes it difficult to effectively suppress overvoltage.Therefore,the overvoltage suppression system of medium voltage distribution network based on deep CNN is designed.The overvoltage signal collector and filter module are designed to process the overvoltage waveform of medium voltage distribution network using HHT bandpass filter.The overvoltage type recognition model is designed based on deep CNN,and the overvoltage waveform types of different medium voltage distribution networks are identified.The end R-APF is designed in parallel to change the gain coefficient and adjust the load impedance that needs to be suppressed.An active power filter is added at each line node to stabilize the change of gain coefficient.The test results show that the effective overvoltage suppression of three-phase voltage can be realized by this system.

关 键 词：深层次CNN 过电压信号采集器 中压配电网 末端并联R-APF 过电压抑制 

分 类 号：TN713.1[电子电信—电路与系统]