As one of the key equipment in the power system, the importance of high-voltage switchgear is self-evident. A reliable high-voltage switchgear can ensure the stable operation of the power system, reduce the occurrence of faults, lower the damage rate of equipment, and improve the safety and reliability of the power system. At the same time, the intelligence and automation level of high-voltage switchgear is also increasing, which can achieve intelligent monitoring and remote control of the power system, providing more convenient and efficient means for the management and maintenance of the power system.

High voltage switchgear is usually composed of main electrical components such as cabinet body, circuit breaker, isolation switch, transformer, lightning arrester, etc. The cabinet is usually made of cold-rolled steel plate or aluminum zinc coated steel plate, which has the characteristics of high protection level, corrosion resistance, dust and water resistance. The interior of the cabinet is divided into multiple functional units, such as the main busbar room, circuit breaker room, cable room, relay room, etc., to facilitate equipment installation and maintenance.