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A Fault Diagnosis Method for Substation

A fault diagnosis and substation technology, applied in the field of substations, can solve the problems of incomprehensibility, intractability, inaccuracy of uncertain information, and achieve the effect of increasing self-adaptive ability and flexibility

Active Publication Date: 2021-01-08
XIHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These methods have their own advantages and have been applied to a certain extent, but there is a common problem, that is, it is difficult to quickly and effectively deal with inaccurate and uncertain information and take into account good understandability and correctness of diagnostic results

Method used

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  • A Fault Diagnosis Method for Substation
  • A Fault Diagnosis Method for Substation
  • A Fault Diagnosis Method for Substation

Examples

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Embodiment 1

[0116] Substation simulation example

[0117] The present invention selects a certain 110kV substation as the verification method for substation fault diagnosis of the membrane system combined with rough sets. The primary equipment of the substation has two three-winding main transformers (T1, T2); two 110kV busbars (M1), two 35kV busbars (W2, W3), two 10kV busbars (W4, W5); two outgoing lines (L1 , L2), 35kV has two outgoing lines (L3, L4), 10kV has two outgoing lines (L5, L6); two capacitors C1, C2; two transformers SYB1 and SYB2. In this design, the substation is divided into three areas of 110kV, 35kV and 10kV. The main wiring diagram and area division are as follows image 3 Shown:

[0118] The equipment to be protected in the 110kV area of ​​the substation mainly includes main transformers T1 and T2, outgoing lines L1 and L2, and busbar M1. The specific protection configurations are shown in Table 1:

[0119] Table 1 Configuration protection type of each equipment in ...

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Abstract

The invention provides a substation fault diagnosis method. The method includes the following steps that: step 1, a substation is divided into k independent regions according to the voltage level characteristic of the substation; step 2, alarm information processing and reduction are performed on each region through using a rough set reduction method, so that reduced information can be obtained and can be used for establishing a fault knowledge production rule set needed by the construction of a diagnostic model; step 3, a binary inference pulsed neural membrane system-based diagnostic model of each region is established according to the production rule set obtained in the previous step; step 4, the matrix reasoning algorithm of the above diagnostic model is adopted to perform knowledge reasoning, so that the diagnosis result of each diagnosis model is obtained; and step 5, a faulty device is determined according to judgment rules. With the method of the invention adopted, fault tolerance, diagnostic efficiency, and the correctness and comprehensibility of diagnostic results are improved.

Description

technical field [0001] The invention relates to a substation, belongs to the technical field of power systems, and in particular relates to a fault diagnosis method for a substation. Background technique [0002] Substation is an important part of the power system, mainly responsible for the collection, transformation and distribution of electric energy. Therefore, whether the substation works normally is one of the important guarantees for the stable operation of the entire power system. When substation equipment fails, a large number of alarm information will be generated, which often contains a large number of redundant and invalid information, and is often accompanied by missing information. The fault diagnosis of the substation requires the operator to quickly and accurately judge the fault based on the alarm information, and to locate and restore the fault, so as to minimize economic losses and quickly restore the reliability of power supply. However, since the inacc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B23/02
CPCG05B23/0245Y04S10/52
Inventor 王涛刘伟郭小康王军黄雨雷
Owner XIHUA UNIV
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