Locking structure and locking method shared by low-voltage incoming line switch of box-type substation and generator compartment

Abstract

The invention discloses a box-type substation low-voltage incoming line switch and a two-lock-one-key locking structure of the generator car room, including: a box-type substation low-voltage cabinet, and a box-type substation generator car access room is opened on the side of the box-type substation low-voltage cabinet , wherein, the frame circuit breaker of the low-voltage cabinet of the box-type substation is provided with a first locking hole; the door of the access room of the generator car of the box-type substation is provided with a second locking hole; a key can be inserted into the first locking hole lockhole or the second locking lockhole. The invention also discloses its locking method. The structure of the invention can prevent electrical safety accidents from being inserted into the socket of the box-type substation when the switch of the frame circuit breaker on the low-voltage side of the box-type substation is not disconnected. To prevent accidental closing of the main incoming line switch of the low-voltage cabinet when the transformer or high-voltage cabinet in the box-type substation is overhauled under the condition of power supply by the generator car, so that the transformer and high-voltage cabinet are energized, thereby causing personal safety accidents.

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

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