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A method for fault diagnosis of smart grid system

A technology of system fault and diagnosis method, applied in fault location, fault detection by conductor type, measurement of electricity, etc. The effect of increasing credibility

Active Publication Date: 2018-12-25
STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The invention provides a fault diagnosis method for a smart grid system, which solves the technical problem that the existing smart substation diagnosis system has poor reliability in fault diagnosis of primary components, and improves the fault diagnosis of primary components of the system The technical effect of credibility

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  • A method for fault diagnosis of smart grid system
  • A method for fault diagnosis of smart grid system
  • A method for fault diagnosis of smart grid system

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Embodiment Construction

[0038] Aiming at the deficiencies of the prior art, the present invention provides a smart grid system fault diagnosis method, which is characterized in that based on the inference rules of the expert system for the secondary information of the smart substation, the secondary fault diagnosis of the smart substation is first performed, and a reliable On the basis of the secondary information, a Petri network model of the primary fault of the power grid is established, and the components of the primary system are reasoned by using the confidence method, and a fault diagnosis method of the primary system of the power grid considering the secondary information of the smart substation is obtained.

[0039] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, under...

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Abstract

The invention discloses an intelligent power grid system failure diagnosis method. The method comprises the following steps: 1, establishing an initial failure diagnosis model of Petri network of a component A of a primary system; 2, collecting warning information of a secondary system within a protection range and judging by utilizing a knowledge base of an expert diagnosis system to acquire corresponding secondary component error information; 3, on the basis of the initial failure diagnosis model of the Petri network of the component A, removing the secondary component error information in the step 2 and establishing a new Petri network failure diagnosis model; and 4, on the basis of the new Petri network failure diagnosis model, performing failure diagnosis on the component A by a confidence coefficient method to obtain the failure diagnosis result, so the technical effect of improving the credibility of the failure diagnosis of the primary component of the system is realized.

Description

technical field [0001] The invention relates to the field of smart grid fault diagnosis, in particular to a smart grid system fault diagnosis method. Background technique [0002] The smart grid construction of the State Grid Corporation of China has entered a new stage of steady and rapid development. With the increase in the number of smart substations in various regions, a large number of new technologies and new equipment have been applied and promoted. According to the smart grid development plan, my country will Build 6,100 smart substations of 110 kV and above, and all new substations in the future will adopt intelligent design schemes. [0003] In the context of smart substations, smart sensing technology and network technology are widely used in various smart devices, and the data we can monitor and transmit is becoming more and more abundant. Taking a 220kV smart substation network record analysis system as an example, the 24-hour record data volume can reach about...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/08
CPCG01R31/086G01R31/088
Inventor 郑永康丁媛媛刘明忠窦仁辉刘天琪常晓青柴继文梁晖辉袁浩任辉张泰刘勇宋欣洲
Owner STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST
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