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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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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 circuits to solve the problems of long cycle, heavy workload and low efficiency brought about by the existing on-site verification method

Method used

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  • Remote checking method of operation circuit

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Embodiment Construction

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

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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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