750kV GIS micro-water content overstandard treatment method

A treatment method and technology of micro-water, which is applied in the combination of methods to dry solid materials, lighting and heating equipment, drying, etc., can solve the problems of excessive micro-water content in the air chamber and non-standard installation process, and achieve the goal of improving work efficiency Effect

Active Publication Date: 2016-11-16
MAINTENANCE COMPANY OF STATE GRID XINJIANG ELECTRIC POWER COMPANY +1
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Problems solved by technology

This application is mainly aimed at the occurrence of SF during the operation of combined electrical appliances (GIS). 6 Research on the treatment of excessive moisture content in the air chamber to improve SF 6 The efficiency of the treatment of excessive moisture content in the air chamber solves the problem of SF caused by the irregular installation process in the early stage and the temperature, humidity and external force during operation. 6 The moisture content in the gas chamber exceeds the standard, providing solid technical support for the safe and stable operation of the equipment

Method used

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  • 750kV GIS micro-water content overstandard treatment method
  • 750kV GIS micro-water content overstandard treatment method

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Embodiment Construction

[0071] Below in conjunction with the examples, the present invention is further described, the following examples are illustrative, not limiting, and the protection scope of the present invention cannot be limited by the following examples.

[0072] The present invention is based on the research on the cause of micro-water generation in the GIS compartment air chamber and the influence on micro-water elements, establishes a model, and finally creatively designs a treatment method for 750 kV GIS micro-water exceeding the standard; wherein,

[0073] We explored the method analysis of micro-water content in the air chamber

[0074] Simulate the diffusion process of water molecules inside the equipment under the conditions of closed air chamber and flow system, and analyze the time required for water molecules in the air chamber to achieve uniform diffusion; study the relationship between gas humidity, temperature, and pressure, and determine that the air chamber can accurately ref...

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Abstract

The invention discloses a 750kV GIS micro-water content overstandard treatment method. The method sequentially comprises the following steps of (1) confirmation of power outage; (2) heating preparation; (3) heating; (4) recycling; (5) first time of vacuumizing; (6) first time of standing; (7) first time of vacuumizing again; (8) standing for 6 hours; (9) starting of a recycling device; (10) second time of vacuumizing; (11) second time of standing; (12) second time of vacuumizing again; (13) standing for four hours; (14) starting of the recycling device to recycle gas of an overhauled GIS interval chamber until zero gage pressure; (15) third time of vacuumizing; (16) third time of standing; (17) third time of vacuumizing again; (18) standing for four hours; and (19) starting of the recycling device to recycle gas in the overhauled GIS interval chamber until zero gage pressure, stopping of heating, continuous injecting of SF6 gas until 0.4 MPa, standing for 20 hours, and then measurement for ensuring the effect the water content value is not larger than 150 ppm, wherein the water content value is a water content value which is converted at the temperature of 20 DEG C.

Description

technical field [0001] The invention relates to the micro-water treatment technology of GIS equipment, and is specifically used for treating the micro-water content in the GIS equipment to a qualified state. Background technique [0002] The safe and stable operation of combined electrical appliances (GIS) is very important to the power system, and it is the fundamental requirement to improve the security of power supply and meet the reliability of power supply. Combined electrical appliances (GIS) due to the moisture brought in by the insulating parts during the installation process, the moisture brought in by the adsorbent, the SF 6 Moisture contained in fresh gas, poor filling process, poor vacuuming process, incomplete treatment of components such as pipe joints and other factors lead to the micro water exceeding the standard after the combined electrical appliance (GIS) is put into operation; and during operation due to SF 6 Moisture and water vapor infiltrated from th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B7/00
CPCF26B7/00
Inventor 黄经纬张楠李洪渊白明何广玉朱金康廖凯丁志锋董雪莲艾克拜尔·买买提
Owner MAINTENANCE COMPANY OF STATE GRID XINJIANG ELECTRIC POWER COMPANY
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