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Information-driven intelligent substation secondary equipment defect diagnosis system and method

A technology for smart substations and secondary equipment, applied in the direction of measuring electricity, measuring electrical variables, measuring devices, etc., can solve problems such as oldness, defect diagnosis methods, and lack of detection and diagnosis methods, and achieve the effect of solving the inability to connect

Inactive Publication Date: 2019-11-05
STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems in the prior art that the detection and diagnosis methods on the secondary equipment side are missing, outdated and unable to make full use of the unified structure of the secondary system of the intelligent substation, the present invention provides an information-driven secondary equipment defect diagnosis method for the intelligent substation, through

Method used

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  • Information-driven intelligent substation secondary equipment defect diagnosis system and method
  • Information-driven intelligent substation secondary equipment defect diagnosis system and method
  • Information-driven intelligent substation secondary equipment defect diagnosis system and method

Examples

Experimental program
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Effect test

Embodiment 1

[0035] Such as Figure 4 As shown, the defect information flow is displayed graphically.

[0036] Taking a 220kV smart substation 261 bay No. 1 line protection "sampling abnormality" alarm signal as an example, the construction method of defect diagnosis information flow is explained as follows:

[0037] (1) Associate the alarm signal with a voltage and current sampling value message of the protection device, and the sampling value is obtained by the protection device by receiving the SV sampling message.

[0038] (2) It can be seen from the SCD file that the SV sampling message of the No. 1 line protection device in the 261 interval is directly transmitted from the No. 1 merging unit in the 261 interval through the optical fiber. Connect to the first optical port of the No. 1 line protection communication plug-in in the 261 bay and the second optical port of the No. 1 merging unit communication plug-in in the 261 bay.

[0039] (3) The SV of the merging unit includes 261 int...

Embodiment 2

[0045] The method is illustrated by the defect diagnosis process of a smart substation.

[0046]In a 220kV intelligent substation, the GOOSE alarm light on the intelligent terminal panel of No. 1 220kV Line A and B in a 220kV intelligent substation was on, and the background reported that the GOOSE link of the intelligent terminal receiving and controlling device was interrupted. The defect diagnosis process is as follows:

[0047] (1) Confirm that the intelligent terminal receives the GOOSE link interruption related reception information of the measurement and control device GOOSE message received by the intelligent terminal, so the defect information flow is formed as follows: Figure 5 shown.

[0048] (2) Defect diagnosis is carried out from the beginning of the defect information flow by dividing the information flow, such as Figure 6 shown. First, remove the interface between the GOOSE networking fiber of the No. 1 smart terminal on the 220kV A-B line and the No. 1 sm...

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Abstract

The invention discloses an information-driven intelligent substation secondary equipment defect diagnosis method. The method comprises the following steps of detecting an alarm signal of a secondary side, and acquiring receiving information of secondary side equipment associated with the alarm signal; establishing a defect information flow of the secondary side equipment according to the transmission process of the receiving information, and dividing the defect information flow into a plurality of sub-information flows, wherein each sub-information flow comprises five parts including a source-end equipment node, a source-end interface node, a transmission path, a start-end interface node and a start-end equipment node; diagnosing the sub-information flows of the start end of the defect information flow one by one, and stopping the operation if a defect element is diagnosed in one sub-information flow, otherwise, taking the source-end equipment node of the sub-information flow as the start-end equipment node of the next sub-information flow to continue diagnosis until the defect element is found; if no defect element is found after the whole defect information flow is diagnosed, detecting a next alarm signal, and diagnosing the defect element according to the process above.

Description

technical field [0001] The invention relates to intelligent substations, secondary equipment, and fault defect diagnosis, in particular to an information-driven intelligent substation secondary equipment defect diagnosis system and method. Background technique [0002] Defects in the secondary equipment of the smart substation will affect the monitoring and control of the primary equipment, and even cause the relay protection device to malfunction or refuse to operate, threatening the safe and stable operation of the power system. Therefore, how to quickly eliminate the defects of secondary equipment in smart substations has always been a problem that relay protection workers continue to think about and explore. [0003] As the first step in defect handling, the accuracy and efficiency of defect diagnosis is the key to defect handling. For a long time, the defect diagnosis of secondary equipment in smart substations has mostly relied on the experience of maintenance personn...

Claims

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Application Information

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IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 周文越丁宣文朱鑫吴杰刘明忠郑永康滕予非高艺文胡蓉李霞张凯杰
Owner STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST
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