A method for online adjustment of gas-insulated switch station knife switch

Abstract

The invention discloses an on-line adjustment method for a switch of a gas insulated switchgear station. The method comprises the following steps of S1, using a multimeter to respectively measure conduction situations of three-phase contacts (A, B and C) in the switch so as to provide display for the on and the off of the switch; S2, inserting a rocker handle into a drive hole in a drive box of the switch, using the rocker handle to switch off the switch by a rocking manner, and manually rocking each linkage rod shaft corresponding to each phase contact outside the switch to a switch-off mechanical limit node; S3, using the rocker handle to switch on the switch by the rocking manner, recording the number of turns of the rocker handle when each linkage rod shaft passes through each node, comparing the recorded number of turns with the preset standard number of turns, if the recorded number of turns meets the requirement of the standard number of turns, finishing the adjustment; if the recorded number of turns does not meet the requirement of the standard number of turns, adjusting according to S4. With the application of the technical scheme, the problems of non-synchronism of the switches with same type, and the matching of electric limit nodes and the mechanical limit nodes are solved.

Description

technical field [0001] The invention relates to the field of electrical equipment maintenance, in particular to an online adjustment method for a knife switch of a gas insulated switch station. Background technique [0002] Ling Ao auxiliary plant power system (LGR) was completed and put into operation in 2010. This system is a new gas insulated switchgear (Gas Insulated Switchgear) of Hyundai Heavy Industries. It is a three-phase live conductor enclosed in a certain pressure SF6 (hexafluorine sulfide) gas, and grounded metal enclosure. However, during the operation of Ling'ao auxiliary plant power system, there was a gas chamber discharge fault caused by the failure of the knife switch to close properly. Considering that the field equipment needs to be operated with electricity, as the auxiliary power supply to ensure the operation of the unit, the normal overhaul window construction period Short, if it is dismantled on a large scale, it will not meet the construction peri...

AI Technical Summary

Problems solved by technology

Coordination between mechanical limit nodes and electrical limit nodes. The electrical limit nodes and mechanical limit nodes must cooperate properly. If the electrical limit nodes move too early, the knife switch will end in advance and the knife switch will move. Not in place, if the electrical limit node moves too late, and at this time the knife switch mechanical limit node, the knife switch motor is still rotating, and the motor will be burned at this time

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