Measures to deal with the discharge of high-voltage switchgear:
1. Standardize selection and installation. When installing and processing the chamfer of the busbar and copper busbar, it should be strictly operated in accordance with relevant specifications. By increasing the curvature radius of the electrode to optimize its shape, the electric field is uniformly distributed, thereby increasing the gap breakdown voltage. To avoid excessive concentration of local electric fields, when overlapping the busbar, the exposed part of the fixing bolt should not exceed 3 teeth, and the overlapping part of the busbar should ensure a flat surface. For the selection of shielded contact boxes, select contact boxes with shielding design to achieve uniform distribution of electric field and prevent excessive concentration of electric field. In order to enhance the anti fouling ability, a dual screen casing design is selected.
2. Control insulation defects. The insulation performance of power equipment determines the reliability of power supply equipment. In order to improve the insulation performance of electrical equipment to a greater extent and control insulation defects, the insulation board inside the high-voltage switchgear should be coated with anti fouling and moisture-proof paint to increase its water resistance. When selecting the insulation sleeve for the busbar, qualified manufacturers should be selected as much as possible to produce high-quality products. When checking the sealing, pay attention to whether there is no air gap and whether the shrinkage is uniform. The insulation sleeve of the busbar has no air gap and uniform shrinkage, which can greatly improve the operational stability of the busbar, and also effectively improve the insulation performance and corrosion resistance of the switchgear.
3. Optimize operating conditions. In order to prevent the operation failure of high-voltage switchgear caused by the environment, the power unit must improve the operating environment of the high-voltage switchgear. When the temperature is high, in order to timely dissipate the heat from closing the cabinet, fans should be installed in the front and back of the handcart cabinet or heat absorption should be installed in the cabinet after the cabinet is installed. Heaters, cable rooms, and heating dehumidifiers should be installed in the switch room and behind the switch room, To ensure that the humidity and temperature around the high-voltage switchgear are maintained within the standard requirements, heaters should be installed in the busbar room, and heating dehumidifiers should be installed in the cable room and switchgear room to effectively regulate temperature and humidity, ensuring that the humidity and temperature around the high-voltage switchgear are maintained within the standard requirements, and ensuring the safe and reliable operation of the high-voltage switchgear.
4. Strengthen condition based maintenance. The traditional maintenance mode utilizes multiple maintenance teams to perform maintenance operations on multiple maintenance operation surfaces simultaneously, which not only causes resource waste but also huge economic losses. Meanwhile, planned maintenance operations can only be carried out during power outages. At present, with the improvement of voltage level, the expansion of power grid scale, and the growth of electricity load, if power outage maintenance is carried out again, the maintenance cost will greatly increase. Therefore, it is necessary to maintain the condition of high-voltage electrical equipment. In the condition based maintenance of power equipment, condition based maintenance can monitor the operation status of power equipment in real-time, accurately and timely identify existing hidden dangers, take effective measures, avoid large-scale power outages, greatly save maintenance costs, and improve the pertinence of maintenance work.
