Method for achieving charged oil supplement of load switch

Abstract

Provided is a method for achieving charged oil supplement of a load switch. An oil pump of an oil filter device is used for achieving charged oil supplement of the load switch, the flow rate is 3L / min, oil has small impact when passing through a gas relay, and false operation is difficult to cause; in an oil supplement process, the new oil is controlled strictly, and gas is prevented from entering the load switch. By the adoption of the method, oil supplement control is simple, sufficient consideration is given to influence on the gas relay of the load switch caused by oil streams and gas streams during oil supplement, and an implementation process is simple and convenient to achieve.

Description

technical field [0001] The invention relates to the field of transformers, in particular to a method for charging oil to an on-load switch. Background technique [0002] The on-load tap changer is an indispensable equipment in the modern power grid. It is used in the power grid for reverse voltage regulation, grid connection, reactive power distribution, and load flow adjustment. Its operating status directly affects the reliability of the system and the reliability of other electrical equipment. normal operation. The on-load switch is the key equipment for the transformer to realize on-load voltage regulation. Before voltage regulation, the oil level of the oil conservator of the on-load switch must be normal. Once there is no oil or no oil, oil must be replenished in time and operation is prohibited. If the operation is forced, the arc generated by the contacts cannot be extinguished during the operation, which will cause a large amount of gas and transformer oil to rush ...

AI Technical Summary

Problems solved by technology

If the operation is forced, the arc generated by the contacts cannot be extinguished during the operation, which will cause a large amount of gas and transformer oil to rush to the oil conservator to activate the gas relay, causing the main transformer to trip; at the same time, if the energy generated by the arc cannot be released in time , it may cause the on-load switch or even the main transformer to explode, seriously threatening the safety of the power grid

The conventional method of replenishing oil for the on-load switch is to carry out in the case of a power failure of the main transformer. The power failure of the main transformer inevitably requires load adjustment, and multiple switching operations will bring certain risks.

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