Remote checking method of operation circuit

A technology for operating loops and verification methods, applied in circuit devices, circuit breaker testing, electrical components, etc., can solve the problems of long cycle, large workload, low efficiency, etc., to reduce inspection costs, improve verification efficiency, The effect of increased equipment availability

Inactive Publication Date: 2010-06-23
STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST +2
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a remote verification method for relay protection open-in and open-out circ

Method used

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  • Remote checking method of operation circuit
  • Remote checking method of operation circuit
  • Remote checking method of operation circuit

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Experimental program
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Example Embodiment

[0020] The invention is realized in this way: the relay protection device still uses the existing hardware, such as figure 1 As shown, the relay protection device includes an inverter power supply, an analog input module, a CPU, a binary input / output circuit, and a remote calibration module. The remote calibration module is connected to the remote calibration center, and the input / output circuit is connected. They are respectively connected to the switch position module and the circuit breaker operating circuit through the opening / opening circuit cables. The invention makes full use of the intelligence of the relay protection device CPU, the station control layer communication interface and the background to carry out a large number of data exchange functions. The operation loop remote check module obtains commands and sends data through the station control layer communication interface of the device, thereby realizing remote Information exchange of the verification center.

[00...

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Abstract

The invention relates to a remote checking method of an operation circuit. An operator transmits a remote check command to a relay protective device from a remote check center and records the time for transmitting the command; the relay protective device switches to the remote check state, executes corresponding operations according to the received command type, simultaneously uploads switching value information to the remote check center and stores the switching value information to a database; the remote check center comprehensively judges a check result according to the information uploaded by the relay protective device and sends alarm information if the check result is abnormal; and the relay protective device switches to the normal work state after the remote check is finished. By the method, the relay protective checking efficiency is greatly improved, the usability of the equipment can be improved and the overhaul power-failure time is shortened; meanwhile, the invention can avoid the long-journey rushing of relay protection persons during periodic inspection, reduces the check method, and has better generalization value.

Description

technical field [0001] The invention relates to a remote verification technology of a power secondary system, in particular to a remote verification method for an operation circuit of a relay protection system with a low-voltage level in a conventional substation. Background technique [0002] The operating circuit is a circuit that controls the operation of electrical primary equipment. Conventional substation operation circuits include circuit breaker trip / close circuits and anti-trip circuits. The tripping circuit and the closing circuit realize the circuit breaker tripping / closing control, and the anti-tripping circuit prevents the circuit breaker from repeatedly "tripping and closing" the phenomenon. Each loop is composed of relays, contacts, and cable connections. Correctness of loop wiring and insulation performance are issues that must be paid attention to during operation. [0003] Since the operation circuit includes several relays and cables connecting various d...

Claims

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Application Information

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IPC IPC(8): H02J13/00G01R31/327
Inventor 赵勇李瑞生石光韩平包伟李晓朋
Owner STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST
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