Separate relay protection device

Abstract

The invention discloses a separate relay protection device. The device comprises a human-machine interaction module and a box body. The human-machine interaction module comprises a front housing, a front panel, a liquid crystal plate and a front limiting plate; the box body comprises a rear housing and a rear limiting plate, the rear limiting plate is fixed to an outer wall face of a front panel of the rear housing, locking mechanisms are arranged on the left and right sides of the rear housing respectively, and locking screws are arranged on the locking mechanisms. The front limiting plate and the rear limiting plate are matched with an opening of a switch cabinet door separately; the front limiting plate is clamped to the front half portion of the interior of the opening of the switch cabinet door, the rear limiting plate is clamped to the rear half portion of the interior of the opening of the switch cabinet door, and the front housing, the front limiting plate, the switch cabinet door, the rear limiting plate and the rear housing are fixed together through multiple fastening screws. The separate relay protection device is flexible and convenient to install, and the power outagetime for replacement work is short.

Description

technical field [0001] The invention relates to a separate relay protection device. Background technique [0002] At present, various regions in China have gradually implemented some old substation renovation projects. In the process of transforming electromagnetic relays into microcomputer protection, and transforming conventional substations into smart substations, a certain amount of experience in substation transformation has been gradually accumulated. However, there are still many engineering implementation problems in the renovation of old stations. For example, the devices of various manufacturers are quite different in terms of function, performance, size and structure, and external interfaces. The protection configuration is not uniform and standardized, and the requirements for external interfaces and circuit coordination are different. etc., increasing the difficulty of on-site engineering implementation. Due to the big difference in size, the existing standardi...

AI Technical Summary

Problems solved by technology

However, there are still many engineering implementation problems in the renovation of old stations. For example, the devices of various manufacturers are quite different in terms of functional performance, size and structure, and external interfaces. The protection configuration is not uniform and standardized, and the requirements for external interfaces and circuit coordination are different. etc., increasing the difficulty of on-site engineering implementation

Due to the large difference in size, the existing standard relay protection devices in Shanghai cannot directly replace imported microcomputer protection devices. When replacing, the old devices need to be removed, and then holes are re-opened on the switch cabinet, which may affect other components on the panel. The normal use of the equipment, and the need to re-install the protection device and re-wiring during the transformation, directly lead to the difficulty of the transformation work and the long power outage time of the replacement work

Or adopt the scheme of replacing the switch cabinet door as a whole, but it takes a lot of time cost, labor cost and capital cost

Or develop a small-sized relay protection device, but this is a non-grid device, the size is not fully adaptable, the backplane needs to be rewired, and the cost is high

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