Switch cabinet convenient for replacement of secondary devices

Abstract

The invention discloses a switch cabinet convenient for replacement of secondary devices. The switch cabinet is connected with at least one secondary device, and comprises a cabinet body and a cabinetdoor. The cabinet body is internally provided with at least one plugging terminal and a fiber interface. Each plugging terminal consists of a plugging plug and a plugging socket, wherein the pluggingsocket is connected with a secondary terminal of the switch cabinet, and the plugging plug is connected with the lead of the corresponding secondary device. According to the invention, the plugging sockets are connected with the secondary terminals of the switch cabinet, the plugging plugs are connected with the leads of the secondary devices, and the wiring mode of the plugging terminals is designed in a standardized way. During replacement of the secondary devices, the connection and replacement of each secondary device can be finished by only making the plugging plug and the plugging socket of the corresponding plugging terminal in butt joint, and there is no need to reconstruct the secondary wiring of the switch cabinet on site. Moreover, a fiber interface is reserved, and there is noneed to reconstruct the switch cabinet during system expanding, updating and upgrading.

Description

technical field [0001] The invention relates to a switch cabinet, and specifically discloses a switch cabinet which is convenient for replacing secondary equipment. Background technique [0002] At present, the installation method of the secondary device for 35KV and 10KV switch intervals in substations is basically on-site installation, that is, the secondary device is installed on the switch cabinet door, and is directly connected to the terminal block in the switch cabinet on the back panel of the device. [0003] Affected by the life of electronic components, the normal service life of the digital relay protection device is about 10 years. According to the "Operation Management Regulations for Microcomputer Relay Protection Devices" (DL / T587-2007), the operating life of microcomputer relay protection devices is generally 12 to 15 years. For microcomputer relay protection devices with unstable operation and harsh working environment The service life can be appropriately ...

AI Technical Summary

Problems solved by technology

[0006] 1. Different manufacturers and different types of protection devices have different sizes, terminal layouts, wiring, etc. When modifying the relay protection device, it is necessary to re-customize and install the switch cabinet door, re-arrange and install the relay protection device The secondary wiring to the terminal block in the switch cabinet requires a large amount of on-site construction and a lot of debugging work, which is prone to wiring errors and on-site debugging is easy to lose items and missing items, which is costly, time-consuming, and low in safety.

[0007] 2. It is difficult to cut off the power of the high-voltage switchgear, because the power grid cannot fully meet the power transfer requirements due to the impact of construction and land acquisition. Therefore, if the power outage of the primary equipment is too long due to the secondary transformation, it will cause less power transmission and affect the power supply reliability

To complete the transformation of the relay protection device on a set of switch cabinets, it takes about 10 hours to shut down the equipment once; it is difficult to coordinate power outages between substations and users during project construction

[0008] 3. The cost of the project is high, and it is necessary to increase the cost of customizing and replacing the switch cabinet door and the construction cost

[0009] 4. There are many management links. Since the original switch manufacturer needs to be entrusted to replace the switch cabinet door, the project management process requires an application for project exemption

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