【摘要】 目前气体绝缘开关设备已经普遍应用到电力系统中,GIS发生局部放电时需要对GIS局放源定位,为保证定位的准确性,必须准确得到各传感器间接收到起始脉冲的时间。讨论了标定各接收点间信号时差的方法,并结合仿真和试验验证了时差定位可行性,证实本文信号时差定位方法具有可操作性,避免目前普遍利用肉眼从图像确定时差的弊端,提高定位的精度。讨论过程中仿真模型依照试验GIS尺寸和传感器的分布情况进行搭建,使仿真和试验得到的结果具有一致性,试验和仿真的结论相互验证,研究结果表明该方法在一定范围内定位效果较好。更多还原

【Abstract】 At present,GIS has been widely applied in power system.When partial discharge(PD) happens,it might need to make sure the PD source location of the GIS.Research shows that when the noise is large,discharge signal at some received points is complex and the method of using the initial discharge pulse to calculate time difference will introduce some errors.In order to ensure the accuracy of positioning,it needs to get accurate time when the first pulse arrives at every receiving point.This paper discusses how to make sure the time difference between receiving points,and prove the method of using the time difference to make sure location to be feasible from the research of both simulation and experiment.which avoids the abuse of the way using eyes to determine the time difference from the image and improves the accuracy of positioning.In the discussion process imitation model is built according to GIS size and the distribution of sensors in experiment,which shows that this method has good effect in a certain range.更多还原