The high voltage switchgear is an indispensable equipment in the power system, which undertakes the important task of controlling, protecting and monitoring the high voltage power line. This article will give you a detailed introduction to the basic knowledge of high voltage switchgear, take you to appreciate its unique charm in the power system.

First, the definition and function of high voltage switchgear

High voltage switchgear, as the name suggests, is an electrical equipment used to control and protect high voltage power lines. It is mainly composed of circuit breaker, isolation switch, grounding switch, transformer, arrester and other components, which can realize the operation of power line opening, closing and grounding, and automatically cut off the circuit in case of failure to protect the safety of power equipment and system.

Second, the classification of high voltage switchgear

High voltage switchgear can be divided into many types according to the different use environment and function. Among them, according to the installation location can be divided into indoor type and outdoor type; According to the circuit breaker installation mode can be divided into movable type and fixed type; According to the structure of the cabinet, it can be divided into metal closed armored type, metal closed interval type, metal closed box type and open type. These different types of high voltage switchgear have their own characteristics and are suitable for different power system scenarios.

Three, the main components of high voltage switch cabinet

Circuit breaker: It is the core component of the high voltage switch cabinet, which is used to realize the opening and closing of the circuit in the power system. When the system fails, the circuit breaker can quickly cut off the faulty circuit to protect the safety of the power equipment and system.

Isolation switch: Used to isolate the electrical connection between the power supply and the device to ensure the safety of workers during overhaul or maintenance.

Transformer: Used to convert high voltage and high current into low voltage and low current, so as to facilitate the measurement and protection of secondary equipment.

Lightning arrester: Used to limit lightning overvoltage and operating overvoltage, protect power equipment and systems from lightning and operating overvoltage damage.

Four, the characteristics of high voltage switchgear

High reliability: The high voltage switchgear is made of high quality materials and advanced technology, which has a high degree of reliability and stability, and can ensure the normal operation of the power system.

High safety: The high voltage switchgear has perfect protection functions and safety measures to ensure that the circuit is quickly cut off in the event of failure to protect the safety of power equipment and systems.

High flexibility: The high voltage switchgear can be flexibly configured and expanded according to the needs of the power system to meet the needs of different scenarios.

High intelligence: With the continuous development of science and technology, high voltage switchgear has gradually realized intelligence and automation, which can realize remote monitoring and intelligent control of the power system.

5. Maintenance and management of high voltage switchgear

In order to ensure the normal operation and extend the service life of the high voltage switchgear, it is necessary to carry out regular maintenance and management. This includes operations such as cleaning, inspection, fastening and lubrication, as well as regular testing and calibration of critical components such as circuit breakers and transformers. In addition, it is also necessary to carry out regular preventive maintenance on the high voltage switch cabinet to discover and eliminate potential safety hazards in a timely manner.

In short, the high voltage switchgear is an indispensable and important equipment in the power system. By understanding its basic knowledge and characteristics, we can better understand its important role and value in the power system. At the same time, strengthening the maintenance and management of high-voltage switchgear is also an important guarantee to ensure the safe and stable operation of the power system.