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Microcomputer temporary protection device of power transmission line

A technology for temporary protection and transmission lines, used in emergency protection circuit devices, electrical components, etc., can solve the problems of difficulty in ensuring accuracy, complicated wiring, and low precision, and achieve simple secondary circuit wiring, small size, and high precision. Effect

Inactive Publication Date: 2017-08-29
HULUDAO POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The temporary protection used in the past is a combination of overcurrent relays and intermediate relays. The volume is too large, the wiring is complicated, and due to the characteristics of electromagnetic relays, the accuracy is not high, and it is difficult to ensure accuracy.

Method used

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  • Microcomputer temporary protection device of power transmission line
  • Microcomputer temporary protection device of power transmission line
  • Microcomputer temporary protection device of power transmission line

Examples

Experimental program
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Effect test

Embodiment Construction

[0018] The microcomputer temporary protection device for transmission lines is equipped with a box body 1, a handle 2 is installed on the box body, a sign board 3 is pasted on the panel of the box body, a display screen 4 and buttons 5 are provided, and a back panel 6 is arranged on the back of the box body , the socket terminal 7 is provided on the back panel.

[0019] There is a secondary circuit in the box.

[0020] The secondary circuit includes power switch, inductance coil, AC plug-in, CPU plug-in, power plug-in and logic plug-in,

[0021] Among them, the power supply through the power switch 8 is connected to the AC plug-in 10 through the inductance coil 9. The AC plug-in is provided with currents IA, IB, and IC, and the lower part is provided with IA', IB', and IC'. The AC plug-in and the CPU plug-in 11 connections;

[0022] There are binary input, pulse PQ, time synchronization and communication in the CPU plug-in, signal reset and backup binary input are connected ...

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Abstract

The invention proposes a microcomputer temporary protection device of a power transmission line. The microcomputer temporary protection device of the power transmission line is provided with a box body, wherein a handle is arranged on the box body, a signboard is pasted on a panel of the box body, a display screen and keys are arranged, a back panel is arranged on a back surface of the box body, a socket terminal is arranged on the back panel, and a secondary loop is arranged in the box body. With the adoption of the temporary protection device, the defect of electromagnetism can be completely avoided, the temporary protection device is small in size, the secondary loop is simple in wiring, the microcomputer temporary protection is high in accuracy, a fault is rapidly responded, and moreover, the microcomputer temporary protection device is wide in application and is suitably used as a temporary protection device for the power transmission line.

Description

technical field [0001] The invention proposes a microcomputer temporary protection device for power transmission lines in the field of electromechanics. Background technique [0002] Because many 220kV transmission lines and 66kV transmission lines in the substation need technical transformation, temporary protection needs to be installed before commissioning to measure the phase of current and voltage to ensure that the phase is correct and no misoperation will occur. The temporary protection used in the past is a combination of overcurrent relays and intermediate relays. The volume is too large, the wiring is complicated, and due to the characteristics of electromagnetic relays, the accuracy is not high, and it is difficult to ensure accuracy. Contents of the invention [0003] In order to protect the circuit, the invention proposes a microcomputer temporary protection device for transmission lines. The device solves the technical problem of circuit protection through m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/26
CPCH02H7/26
Inventor 于常乐邱胜军高宜鸣张硕初祎杨紫明陈东魁徐胜王凯王鑫韩帅
Owner HULUDAO POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER
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