Micro-water monitoring and processing system for GIS transformer substation

Abstract

The invention discloses a micro-water monitoring and processing system for a GIS transformer substation. The system can be used for micro-water detection of sulfur hexafluoride gas in a GIS equipmentgas chamber and ventilation of the sulfur hexafluoride gas in the GIS equipment gas chamber with the micro-water exceeding the standard. The system comprises a four-way valve connected with a GIS equipment gas chamber interface of the GIS equipment gas chamber; a second outlet pipeline of the four-way valve is connected with the GIS equipment gas chamber interface through a second outlet gas channel connector; the four-way valve is also provided with a first outlet pipeline, a third outlet pipeline and a fourth outlet pipeline; the first outlet pipeline, the third outlet pipeline and the fourth outlet pipeline are connected with a discharge main pipeline, a sulfur hexafluoride inflation pipeline and a nitrogen inflation pipeline correspondingly; the discharge main pipeline is connected with four branches in parallel, and the four branches are respectively a micro-water detection pipeline, a sulfur hexafluoride recovery pipeline, a vacuum pumping pipeline and a nitrogen discharge pipeline; and a micro-water detection assembly is arranged on the micro-water detection pipeline, and a vacuum pump is arranged on the vacuum pumping pipeline.

Description

technical field [0001] The invention relates to a micro-water treatment system, which is specifically used for detecting and treating the micro-water content of sulfur hexafluoride gas in the gas chamber of GIS equipment in a GIS substation. Background technique [0002] At present, GIS electrical equipment has been widely used in the power sector, which has promoted the rapid development of the power industry. In recent years, with the rapid economic development, the capacity of my country's power system has expanded rapidly, and the amount of GIS electrical equipment has increased. The core insulating gas in GIS is SF 6 Gas, the role of sulfur hexafluoride gas in high-voltage electrical equipment is arc extinguishing and insulation, and SF in high-voltage electrical equipment 6 If the micro-moisture content of the gas exceeds the standard and the density decreases, it will seriously affect the safe operation of GIS high-voltage electrical equipment: [0003] 1) When the...

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Problems solved by technology

[0003] 1) When the temperature drops, too much water may form condensation water, which will significantly reduce the insulation strength of the surface of the insulating part, or even flashover, causing serious damage

[0004] 2) SF 6 The reduction of gas density to a certain level will lead to the loss of insulation and arc extinguishing performance

[0005] Therefore, micro-water detection in GIS substations is very important, and regular detection is also one of the substation operation and maintenance tasks; however, in the prior art, detection and treatment are carried out separately. For sulfur hexafluoride gas required by the standard, it is the most common and effective way to replace the original gas with micro-water exceeding the standard; the whole detection process takes a long time, the detailed design of the replacement process is not reasonable enough, and the replacement gas is not recycled, which will cause environmental pollution ;The details of the replacement process include whether to vacuum, whether to flush with nitrogen, etc.

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