Locking structure shared by box-type transformer substation low-voltage incoming line switch and power generation vehicle chamber and locking method of locking structure

Abstract

The invention discloses a two-lock one-key locking structure for a box-type transformer substation low-voltage incoming line switch and a power generation vehicle chamber, and the structure comprisesa box-type transformer substation low-voltage cabinet and a key, wherein the side part of the box-type transformer substation low-voltage cabinet is provided with a box-type transformer substation power generation vehicle access chamber, and a frame circuit breaker of the box-type transformer substation low-voltage cabinet is provided with a first locking lockhole; a chamber door of the box-type transformer substation power generation vehicle access chamber is provided with a second locking lockhole; and the key can be inserted into the first locking lockhole or the second locking lockhole. The invention further discloses a locking method of the locking structure. The structure provided by the invention can prevent a quick access plug of the power generation vehicle from being inserted into a socket in the power generation vehicle quick access chamber of the box-type transformer substation to cause electrical safety accidents under the condition that the low-voltage side frame circuitbreaker switch of the box-type transformer substation is not switched off. Personal safety accidents caused by electrification of a transformer and a high-voltage cabinet due to mistaken closing of amain incoming line switch of the low-voltage cabinet when the transformer or the high-voltage cabinet in the box-type transformer substation is overhauled under the condition of power supply of the power generation vehicle are prevented.

Description

technical field [0001] The invention relates to the field of electric equipment manufacturing, in particular to a locking structure shared by a low-voltage incoming line switch of a box-type transformer and a power generation car room and a locking method thereof. Background technique [0002] With the rapid development of urban construction, in order to improve the urban streetscape and build a harmonious and tidy new appearance of the city, box-type substations, as electrical equipment that can be seen everywhere in the city, play a vital role in the image of the city. However, during the operation of the box-type substation, various factors will cause the substation to power outage. However, some important industrial and mining enterprises and residential communities do not allow long-term power outages. At this time, emergency generator vehicles are usually used; when the substation is powered off, the emergency generator vehicles are connected to the box-type substation...

AI Technical Summary

Problems solved by technology

[0003] The existing box-type substation generator car access reserved interface is set on the low-voltage side. In the conventional access scheme, it is necessary to manually determine the opening and closing of the main switch of the incoming line on the low-voltage side, so it is easy to cause the operator to miss inspection and misjudgment. The power supply of the generator car is connected without breaking the main switch of the incoming line of the low-voltage cabinet. In case of a power outage caused by a failure of a transformer or a high-voltage cabinet in a substation, at this time, if the maintenance is performed, it will cause a personal safety accident because the generator car sends power to the transformer and reverses the power to the high-voltage cabinet

Images