Small-sized relay protection intelligent terminal device adopting clamping structure

Abstract

The invention discloses a small-sized relay protection intelligent terminal device adopting a clamping structure and a method for changing the relay protection device or the intelligent terminal of a switch cabinet without power outage. The device is formed by a body, a pedestal and a mounting base; wherein the pedestal is fixedly arranged on the body, all of input / output lead wires including internal AC-DC measurement, state input, control output, power supply, communication and the like access the pedestal; all of the external input / output lead wires access the mounting base; and the base and the mounting base are connected in a butt joint mode and in a splicing and clamping locked way (as figure). When the device is clamped and locked on the mounting base, the mounting process is completed, and the device can be normally operated; when the device is pulled out from the mounting base, the disassembly of the device is completed, and the device can not work; according to the invention, the mounting and maintaining work of a distribution network and a micro-grid can be simplified, the power supply reliability can be improved, and the device has positive and great significance for safety, stability and economy of power grid operation.

Description

technical field [0001] The invention discloses a method for using a miniaturized relay protection intelligent terminal device with a clamping structure to realize the replacement of a relay protection device and an intelligent terminal without power failure in a switch cabinet, which involves power generation, transmission, distribution, power consumption and its field of automation technology. Background technique [0002] With the large-scale access of photovoltaic, wind power, energy storage, electric vehicles and other new energy sources and their application equipment, the development of intelligent distribution network, micro-grid and demand side will become the main direction of the development of traditional power grid. The modernized distribution network, micro-grid, and demand side have become the key investment and development direction of the global power grid at present and in the future. —Relay protection devices and intelligent terminals installed on switch c...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the products that can be provided in the market and actually installed and operated adopt the method of fixed installation and terminal wiring, and some of them adopt the method of plugging and unplugging terminals for electrical connection. different, need to use different plug terminals to achieve plug-in connection, see figure 1 , so the structure of these devices is complicated, installation and debugging are troublesome, maintenance and replacement requires a power outage of the switchgear, requiring professional engineering and technical personnel or even technical experts from the manufacturer to go to the site to deal with it, resulting in a considerable number of protection devices and intelligent terminal equipment. It is an automatic device that was originally put into operation to improve power supply reliability and reduce power outage time, but due to its own structural defects and maintenance difficulties, it affects the normal operation of the power grid, and even reduces the reliability of the power grid in many cases.

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