摘要
研制了一种具有多台设备同步采集局部放电信号的分布式的电缆局部放电在线监测系统,可以对疑似局部放电信号进行定位和模式判别,来实现综合判断出电缆的绝缘劣化程的目的。本系统采用光纤收发器作为同步触发信号,保证了多台设备之间同步精度在30 ns以内,通过测量疑似局部放电信号到达两台局部放电采集单元的时间差,计算出局部放电位置。本系统根据已获得的局部放电特征谱图计算出统计因子并输入到神经网络分类器中进行判别,平均识别率均在90%以上。
This paper develops a distributed online monitoring system for partial discharge （PD） of cables, synchronously collecting the PD signals synchronously with multi-devices. The system can locate and identify suspected PD signals to determine the insulation deterioration process of the cables, and uses optical fiber transceiver as synchronizing trigger signal, ensuring that the synchronization precision of the multi-devices is less than 30ns. The location of the PD is calculated by measuring the time difference between the suspected PD signals and two PD acquisition units. In addition, the system calculates the statistical factors based on the partial discharge characteristic spectrum obtained, and detects the PD by inputting the factors to neural network classifier, obtaining the average recognition rate of over 90%.
作者
杨引虎
罗建勇
韦远涛
徐田丰
李国超
马运同
王庆涛
席保锋
YANG Yinhu1, LUO Jianyong2, WEI Yuantao3, XU Tianfeng4, LI Guochao4, MA Yuntong4, WANG Oingtao4, XI Baofeng4(1. State Grid Shaanxi Electric Power Company, Xi＇an 710048, China; 2. State Grid Tongchuan Power Supply Company, Tongchuan 727031, China;3. Economic ＆ Technology Research Institute, State Grid Shaanxi Electric Power Company, Xi＇ an 710065, China; 4. Xi＇ an State Key Laboratory for Electrical Insulation of Electric Power Equipment, Xi＇ an Jiaotong University, Xi＇ an 71004)
出处
《智慧电力》
北大核心
2018年第3期91-94,100,共5页
Smart Power
关键词
局部放电
同步采集
定位
模式识别
LABVIEW
partial discharge
synchronization acquisition
location
pattern recognition
LabVIEW
