the application of environmentally friendly vacuum switchgear

2025-06-11 13:47:21

The following is an analysis of the application of environmentally friendly Vacuum switchgear (CO ? insulation) in urban central substations:

1、 Technical principles and core advantages

Innovation of environmentally friendly insulation media

• Replacing SF6: Traditional switchgear uses sulfur hexafluoride (SF6), which has a greenhouse effect 25200 times that of CO ?. The new switchgear adopts dry air (containing CO ? mixed gas) or pure CO ? insulation to achieve near zero greenhouse gas emissions.

• Safe and pollution-free: It can directly emit into the atmosphere, has no toxic decomposition products containing fluorine, and reduces maintenance costs throughout the entire lifecycle by 30%.

Extreme environmental adaptability

• Cold resistance: No heating device is required in a cold environment of -40 ℃, and stable operation can be maintained (tested at Wuhan Daoluokou Substation).

• High reliability: able to withstand 40kA short-circuit current (twice the intensity of lightning strikes), ensuring quick disconnection in case of urban power grid failures.

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Compact and intelligent design

• Space saving: The vertical layout structure occupies 40% less land than traditional AIS equipment, making it suitable for urban land scarcity scenarios.

• Integrated sensors: built-in temperature and partial discharge monitoring modules, data directly connected to the Dianhong IoT system, supporting remote diagnosis and OTA upgrades.