An in-situ line protection device based on vertical integration of functions

Abstract

The invention discloses a vertical function integration-based local circuit protection device. By the vertical function integration-based local circuit protection device, functions of circuit protection, a circuit combination unit and an intelligent terminal are vertically integrated and are integrated in a single board in the protection device for implementation. In the vertical function integration-based local circuit protection device provided by the invention, the combination unit is vertically integrated at intervals by an integrated design, the intelligent terminal function is protected,the equipment type and number are reduced, the configuration is simplified, an intermediate transmission link of a signal is reduced, and the application real-time performance is improved by shortening data transmission path time; and meanwhile, the requirement on shortening protection action time needed by circuit data sampling at intervals and resource sharing control of other equipment is met,and data acquisition and execution support control are provided for station-end equipment such as station domain protection and safety device.

Description

technical field [0001] The invention relates to an in-situ line protection device based on vertical integration of functions, which belongs to the technical field of electric power system relay protection. Background technique [0002] Conventional substation protection equipment is generally installed in the control room or protection cell, using direct cable sampling and direct tripping, the distance between the primary and secondary equipment is relatively long, and the cable is long, which may cause CT saturation, multi-point grounding, loop crosstalk, and distributed capacitance discharge and other issues, and data sharing cannot be realized at the same time. [0003] The smart substation realizes data sharing by increasing the application of IED equipment such as merging units and intelligent terminals; the process layer equipment is installed in the local control cabinet to solve the problem of long cables. However, new equipment and changes in installation methods h...

AI Technical Summary

Problems solved by technology

[0009] An in-situ line protection device based on vertical integration of functions, including: a box body, a cover plate, and a supporting structure. a. Vertical integration of functions The in-situ line protection device integrates the functions of line protection, line merging unit and intelligent terminal vertically on the basis of the intelligent substation system architecture, and integrates them into a single board in a protection device. Shorten the data transmission path time, improve the real-time performance of the application, and at the same time meet the requirements of other equipment for line interval sampling data and control resource sharing; Stress-based complex intelligent electronic equipment system structure design technology, to solve the problem of strong electromagnetic disturbance coupling between circuit boards caused by the parallel arrangement of multiple circuit boards in complex intelligent electronic equipment under the compact chassis size specifications, and the circuit board is easy to withstand impact external forces on the chassis Due to the problem of mechanical damage and heat dissipation of the circuit board in the middle of the side-by-side structure, it meets the requirements of direct installation without protection on site; c. The on-site line protection device adopts the design without LCD screen, and the intelligent management unit is set in the control room as the whole station. The human-machine interface of the ground protection device; d. The local line protection device adopts a standardized interface design, which reduces the possibility of accidental contact and miswiring, and creates conditions for the protection equipment to be replaced and repaired and plug-and-play; the top of the box There is a metal cover plate, and a conductive sealing strip is set between the box body and the metal cover plate. The middle part of the box body is divided into upper and lower layers by a heat conduction shielding plate. An insulating plate is installed at the bottom of the lower layer of the box body. A heat-conducting copper block, an insulating heat-conducting pad is arranged on the heat-conducting copper block, and a power supply module is arranged on the insulating heat-conducting pad; The module is connected to the power module through double-row terminals; the top of the heat-conducting shielding plate is provided with a heat-conducting insulating pad, and the top of the heat-conducting insulating pad is connected to the heating element on the CPU module, and the top of the heat-conducting insulating pad is also provided with a second supporting structure The second support structure is provided with an optical fiber interface module, which is connected to the CPU module through a high-speed connection terminal; a heat-conducting insulating pad is arranged between the optical module on the optical fiber interface module and the bottom of the metal cover; the lower layer of the box body There are three rows of terminals, and the power module is connected to the CPU module through three rows of terminals

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