The switchgear is one of the important equipment in the power system, and the phenomenon of partial discharge often occurs in the actual operation, which not only affects the normal operation of the switchgear, but also affects the stability of the entire power system, and in serious cases, it will also lead to power system failure. Therefore, it is an important way to ensure the stable operation of the power system by understanding the causes of partial discharge of the switchgear in time and choosing the appropriate solution.
There are many reasons for partial discharge of switchgear, the most common of which is defects in the equipment manufacturing process, such as impurities and bubbles inside the insulating material. These defects can lead to an uneven distribution of the electric field, making the local electric field strength exceed the capacity of the insulating material, which can cause partial discharge. In addition, poor equipment installation environment, aging of long-term operation, improper maintenance and other reasons may also lead to partial discharge of the switchgear.
At present, the detection methods of partial discharge of switchgear include ultrasonic detection method, ultra-high frequency detection method, etc., and the public in Shaanxi Province has designed and developed the first-class monitoring device for partial discharge of switchgear, which can better monitor the operation status of switchgear, assist operation and maintenance management personnel to find the partial discharge phenomenon in time and accurately locate it, and provide a basis for subsequent problem handling. The partial discharge monitoring device of the switchgear is suitable for installation before the operation of the switchgear of the new substation, which can monitor the partial discharge inside the switchgear in real time and find potential faults and hidden dangers in time.
For power system operation and maintenance managers, the causes and solutions of partial discharge of switchgear are a complex problem that needs to be solved from multiple aspects. The installation, maintenance and management of switchgear equipment, and operation detection are important work contents. During the installation process, it should be operated in strict accordance with the installation specifications to ensure the installation quality of the equipmentIn the process of equipment operation, strengthen the inspection and maintenance of equipment, and use advanced detection technology to find and deal with problems such as partial discharge of equipment in a timely mannerAt the same time, strengthen the maintenance and repair of equipment, regularly inspect and maintain equipment, and ensure the normal operation of equipment.