摘要
工频相位是局部放电监测进行模式识别的重要基础。目前GIS局部放电监测设备中局部放电类型识别率较低，在三相共筒式GIS中问题更加突出。针对此现象，提出一种基于工频同步信号的三相共筒式GIS局部放电识别方法。在不改变现有工频同步信号接入的前提下，通过工频同步信号触发局部放电信号的采集，并将其通过移相因子转换为其他相局部放电数据，分别与系统中局部放电类型数据库比对，将识别率最高的类型输出，从而达到模式识别的目的。所述方案实现简单，具有应用灵活和故障类型识别率高的特点。
The power phase plays an important role in the partial discharge （PD） monitoring device for pattern recognition. The rate of recognition to discharge types in the current PD monitoring devices is low, especially in the three-phase barrel GIS. Based on the synchronization signal, a PD recognition method in the three-phase common GIS is presented for the above problem in this paper. Firstly, the existing synchronization signal is used, and then it is converted to be the other two-phase PD data by the phase- shift factors. Furthermore, it is compared with date base of PD features, the PD type of the highest recognition rate will be output. This scheme is very simple to implement and has the flexibility and high PD type determination in engineering applications.
作者
郭旭
牧继清
王庆军
雍明超
王伟杰
毛丽娜
Guo Xu;Mu Jiqing;Wang Qingjun;Yong Mingehao;Wang Weijie;Mao Lina(XJ Group Co., Ltd. Xuchang 461000 China;State GridAnhui Electric Power Research Institute Hefei 230000 China)
出处
《电气工程学报》
2018年第4期46-52,共7页
Journal of Electrical Engineering
基金
国家电网公司科技项目“智能高压设备传感器即插即用技术研究和产品研制”资助
关键词
局部放电监测
工频同步
模式识别
三相共筒GIS
高压设备
PD monitoring, power frequency synchronization, pattern recognition,three-phase barrel GIS, high voltage equipment
