GOOSE network performance self-diagnosis method used for intelligent transformer substation relay protection

A technology of intelligent substation and relay protection, applied in data exchange network, electrical components, digital transmission system, etc., can solve the problems of rapidity and reliability discount of relay protection, inability to know the performance of relay protection GOOSE network, etc. To achieve the effect of ensuring reliability and quickness, and improving stability

Inactive Publication Date: 2016-06-01
NANJING GUODIAN NANZI POWER GRID AUTOMATION CO LTD
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Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problem that the performance of the relay protection GOOSE network cannot be known in the existing smart substation, and the quickness and reliability of the relay protection are greatly reduced, and a relay protection system for smart substations is provided. GOOSE network performance self-diagnosis method

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  • GOOSE network performance self-diagnosis method used for intelligent transformer substation relay protection

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, and cannot be used to limit the protection scope of the present invention.

[0017] A GOOSE network performance self-diagnosis method for relay protection of smart substations is characterized in that it includes the following two steps.

[0018] Step SS1 The relay protection device measures the GOOSE network delay.

[0019] When the relay protection device of the smart substation is in normal operation, in order to reduce the pressure on the GOOSE network at the process layer when the protection is not activated, the relay protection device sends a frame of GOOSE self-diagnosis heartbeat message to its corresponding smart terminal every 10 minutes. Distinguish the self-diagnostic GOOSE message from the ordinary message for monitoring the GOOSE link interrup...

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Abstract

The invention discloses a GOOSE network performance self-diagnosis method used for intelligent transformer substation relay protection. The GOOSE network performance self-diagnosis method is characterized by comprising the following steps that step SS1, a relay protection device measures GOOSE network time delay; and step SS2, the relay protection device emits early warning according to GOOSE network time delay of the step SS1. The achieved beneficial effects are that (1) the defect that an intelligent transformer substation cannot acquire time delay of a GOOSE network layer can be solved, the relay protection device of the intelligent transformer substation is enabled to possess a function of real-time diagnosis of GOOSE tripping network performance, reliability and quick action of the relay protection device of the intelligent transformer substation can be guaranteed and stability of a power system can be enhanced; and (2) the relay protection device can monitor the size of time delay of the GOOSE network in real time and give corresponding early warning information to notify operation personnel to perform timely troubleshooting, and time delay of the GOOSE network layer can be viewed in real time through the interface of the relay protection device so that the operation personnel can acquire the information more visually.

Description

technical field [0001] The invention relates to a GOOSE network performance self-diagnosis method for relay protection of intelligent substations, and belongs to the technical field of power system automation. Background technique [0002] There are four basic requirements for relay protection. Compared with the direct tripping method of traditional protection contacts, the relay protection action circuit of the intelligent station is generally composed of three parts: the relay protection device, the switch and the intelligent terminal. The relay protection adopts GOOSE. The number of intermediate communication links in the way that the message is sent to the operation box through the network increases, which leads to the extension of the total action time of the protection. Compared with the conventional station, the rapidity and reliability of the relay protection are reduced. At present, there have been relatively mature solutions for the disconnection monitoring of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/26
CPCH04L43/0858
Inventor 陈福锋张尧薛明军
Owner NANJING GUODIAN NANZI POWER GRID AUTOMATION CO LTD
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