Gas replenishment method and device for environment-friendly gas-insulated equipment

Abstract

Disclosed is an environment-friendly gas insulated equipment gas supplement method and its device, the gas insulated equipment is connected to the gas supplement device through a buffer tank, the gas supplement method includes: detecting the current total pressure P of the gas chamber of the gas insulated equipment, The current temperature T°C and the current concentration C of each gas N , and use this to calculate the total amount of mixed gas loss P in the gas chamber of the gas-insulated equipment 补 , the current pressure of each gas in the mixed gas P N , and the pressure difference ΔP of each gas N ; Calculate the volume V of the gas supply device 补 The ratio k to the gas chamber volume V of the gas insulation equipment; the pressure distribution in the gas supply device is 1 / k*P 补 The supplementary gas, the proportion of each gas in the supplementary gas is such that the supplementary gas in the gas supply device is charged into the gas chamber of the gas insulation device through the buffer tank.

Description

technical field [0001] The invention relates to the field of gas experiments, and relates to an environment-friendly gas insulated equipment gas supply method and a device thereof. The gas supply ratio of various gases in the environment-friendly gas insulated equipment can be obtained by means of the gas supply amount method. Then inject the prepared supplementary gas into the gas chamber of the environment-friendly gas insulation equipment through the supplementary gas device. Background technique [0002] During the operation of environmentally friendly gas insulated switchgear, due to gas decomposition or device leakage, the internal pressure of the gas chamber will drop, and the air pressure requirements for the insulation performance of the equipment cannot be maintained, which will affect the safe and stable operation of the equipment. It is necessary to replenish the gas inside the gas chamber in time. The gas in the gas chamber of environmentally friendly gas insul...

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Problems solved by technology

[0002] During the operation of environmentally friendly gas insulated switchgear, due to gas decomposition or device leakage, the internal pressure of the gas chamber will drop, and the air pressure requirements for the insulation performance of the equipment cannot be maintained, which will affect the safe and stable operation of the equipment. It is necessary to replenish the gas inside the gas chamber in time

The gas in the gas chamber of environmentally friendly gas insulated switchgear is C 4 f 7 N, C 5 f 10 O and C 6 f 12 Composition of O-based insulating gas mixed with buffer gas, traditional SF 6 The gas supplement method of gas insulated equipment is not suitable for environmental protection gas insulated switchgear, and a new gas supplement method and device are needed

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