Modular intelligent box type fixed inflatable high-voltage AC metal enclosure switching equipment

Abstract

The invention discloses modular intelligent box type fixed inflatable high-voltage AC metal enclosure switching equipment. The equipment comprises a cabinet body and multiple functional chambers located in the cabinet body. The multiple chambers comprise a low-voltage meter chamber, a vacuum circuit breaker, a three-position switching mechanism operating chamber, a bus chamber, a three-position mechanism operating chamber, an accessory and tool chamber, a master bus pressure relief chamber, a cable and mutual inductor installation chamber, a master bus inflation chamber and a circuit breaker inflation chamber. The low-voltage meter chamber, the vacuum circuit breaker, the three-position switching mechanism operating chamber, the bus chamber, the three-position mechanism operating chamber and the accessory and tool chamber are sequentially arranged in the front end of the cabinet body from top to bottom. A pressure relief passage of the circuit breaker chamber is arranged in the back end of the cabinet body. The circuit breaker inflation chamber is located on the upper rear portion, corresponding to the vacuum circuit breaker and the three-position switching mechanism operating chamber, of the cabinet body, and the circuit breaker inflation chamber is inflated with insulation gas. The equipment has the advantages of being reliable in sealing, convenient to install and repair, safe and reliable, intelligent in function, and the like.

Description

technical field [0001] The invention mainly relates to the field of high-voltage switchgear, and in particular refers to a modular design intelligent inflatable high-voltage AC metal-enclosed switchgear (C-GIS). Background technique [0002] Medium-voltage cabinet-type gas-insulated metal-enclosed switchgear (C-GIS) is a primary power distribution system with a circuit breaker as the main switch and parameters within a relatively high range for voltage levels of 12 to 40.5kV or higher equipment. It is the product of the organic combination of GIS's SF6 insulation technology, sealing technology and air-insulated metal-enclosed switchgear manufacturing technology. [0003] The existing gas-filled (C-GIS) gas-insulated metal-enclosed switchgear has the following deficiencies: [0004] 1. Bellows are used to seal the operating mechanism of the vacuum circuit breaker in the gas-insulated metal-enclosed switchgear and the gas-filled compartment. Because the welding and sealing ...

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Problems solved by technology

[0005] 2. Traditional gas-filled (C-GIS) gas-insulated metal-enclosed switchgear generally adopts a single gas chamber structure, and can only have one three-position isolating / grounding switch, resulting in no reliable grounding protection for the outgoing or incoming wires. The safety of operation and maintenance personnel is not fully guaranteed

[0006] 3. The intelligence level of the existing gas-insulated metal-enclosed switchgear is relatively low, such as the temperature rise of the key operating data of the switchgear, and the monitoring of the key mechanical characteristic data of the vacuum circuit breaker, which cannot reflect the quality of the switchgear in time, and cannot prevent and timely Overhaul, can not meet the development of the modern era

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