T/CES 236-2023 Operating and Maintenance Regulations for 72.5kV and above CO2 Insulated Metal Enclosed Switchgear

Scope

Scope: This document specifies the inspection, maintenance, and testing requirements for 72.5 kV and above CO2-insulated metal-enclosed switchgear (GIS) equipment during operation and maintenance. This document applies to the operation, maintenance, and repair of 72.5 kV and above CO2-insulated GIS equipment. Similar equipment below 72.5 kV can be referenced for use. Main technical content: General Secretary Xi Jinping has repeatedly mentioned that to jointly address challenges in the climate and environmental fields, China will increase its national contributions to reduce CO2 emissions, strive to peak CO2 emissions by 2030, and achieve carbon neutrality by 2060. The promotion and application of environmentally friendly CO2-free GIS equipment can effectively reduce the use and emissions of SF6 gas, which is a powerful guarantee for achieving this goal and promoting the green and high-quality development of the power grid. Environmentally friendly CO2-free switchgear adopts a vacuum arc-extinguishing chamber as the breaking unit and CO2 gas as the sole breaking medium for GIS insulation and isolation, as well as grounding switches, achieving complete replacement of SF6 gas, with the CO2 equivalent of each device reduced by more than 99.99%. The promotion and application of 72.5 kV and above CO2-insulated metal-enclosed switchgear can effectively reduce the use and emissions of SF6 gas, which is a powerful guarantee for achieving this goal and promoting the green and high-quality development of the power grid. In order to standardize and guide the on-site operation and maintenance and equipment repair of 72.5 kV and above CO2-insulated metal-enclosed switchgear, it is necessary to formulate the operation and maintenance and repair specifications for 72.5 kV and above CO2-insulated metal-enclosed switchgear.

Development Information

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