Partial discharge characteristics
1, the local discharge is a local overheating, electrical components and mechanical components of the signs of aging;
2, the partial discharge trend is the rise of the PD over time, which is a tortuous process, a stage may decline, but a certain stage of the rise.
The corona is insulated from the local dirt that causes the discharge to be fine after the discharge is caused by the insulation drop
3, in the insulation structure in the local discharge, will be associated with the generation of electrical pulse, ultrasonic, electromagnetic radiation, light, chemical reactions, and cause local fever and so on;
As the partial discharge of the above characteristics, so how to avoid partial discharge of electrical equipment, how to remove the partial discharge, so that the normal operation of the equipment has become the most important equipment maintenance personnel to consider things. In order to remove this latent fault phenomenon, there are a number of methods for on-line detection of local discharge phenomena for some electrical pulses, ultrasonic waves, and electromagnetic radiation generated by partial discharge.
