电力设备局部放电信号的在线检测系统研究

Research of on-line detection system for partial discharge signl of power equipments

主要研究了以光学信号为基础的电力设备局部放电的在线检测系统。由于电力设备发生局部放电时会辐射频带很宽的光谱信号,通过检测电力设备辐射的太阳光谱的紫外盲区信号,可以推断电力设备绝缘是否发生破损,并配合USB光学摄像头可实现电力设备内部局部放电状况的视频检查。实验研究表明:本系统对检测电力设备局部放电信号具有快速直观、灵敏度高、抗干扰性强等优点。

The on-line detection system based on optical signal is introduced, which can detect the internal partial discharge of power equipment. Since the partial discharge will radiate spectrum signal with wide band ,through detecting UV blind signal ,it can also roughly evaluate the on-line power equipment and analyze the breakage status of internal insulating material.By combining USB camera with UV sensor in probe, the UV detection system can acquire the internal information of power equipment .Experimental results show that the UV detection system has advantages in detecting partial discharge such as quickness, high sensitivity , anti-interference performance and so on.