基于光纤传感器测试变压器内部局部放电试验

Partial Discharge Test in Transformer Using Optical Fiber Sensor

采用JFD-251局部放电检测仪,建立不同电极形状的放电模型模拟变压器内部局部放电故障,测试变压器内部局部放电特征值,包括放电起始电压、尖端放电电压、熄灭电压等.在此基础上采用新式光纤传感器进行变压器内部局部放电试验.试验发现:放电脉冲间隔随着试验电压的增大而减小;光纤传感器测得的放电量与局部放电测试仪测得的放电量有着很好的正相关性.

Using JFD-251 partial discharge detection system,a discharge of different electrode shape model was set up to simulate the partial discharge fault in transformer,to test the characteristic value of partial discharge in transforme,including the initial discharge voltage,point discharge voltage and voltage. On the basis of this,a new optical fiber sensor was used to test the partial discharge in the transformer. The study has found that the discharge pulse interval decreases with the increase of voltage,that discharges measured by partial discharge device and optical fiber sensor shows a positive correlation.