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Power distribution network reliability evaluation system considering overhaul strategy and equipment health index

A technology of health index and maintenance strategy, applied in the direction of information technology support system, data processing application, prediction, etc., can solve the reliability changes of distribution network, lack of reliability evaluation of distribution network, unable to reflect the reliability of distribution network, etc. question

Pending Publication Date: 2021-02-09
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the service goal of this kind of literature is to optimize the maintenance strategy, and there is a lack of relevant content for distribution network reliability evaluation based on the maintenance strategy. The reliability indicators are incomplete and cannot reflect the weak link of distribution network reliability.
However, other literature treats the impact caused by the maintenance as the failure rate, which cannot specifically reflect the changes in the reliability of the distribution network during the maintenance process.

Method used

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  • Power distribution network reliability evaluation system considering overhaul strategy and equipment health index
  • Power distribution network reliability evaluation system considering overhaul strategy and equipment health index
  • Power distribution network reliability evaluation system considering overhaul strategy and equipment health index

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] Distribution network reliability evaluation system considering maintenance strategy and equipment health index, including grid data acquisition module, maintenance strategy acquisition module, equipment health index calculation module, equipment health index calculation module, equipment reliability calculation module, distribution network failure probability Calculation module, operation program generation module, reliability evaluation module and database.

[0071] The power grid data acquisition module acquires the basic data of the distribution network and sends them to the equipment health index calculation module and the equipment health index calculation module respectively.

[0072] The basic data of the distribution network includes transformer data, line data, a set of operable switches and the grid structure of the distribution network. Among them, the number of transformers is recorded as n T . The number of lines is denoted as n L . The number of movabl...

Embodiment 2

[0125] see figure 1 , a reliability assessment method using a distribution network reliability assessment system that comprehensively considers the maintenance strategy and the equipment health index, mainly including the following steps:

[0126] 1) Obtain the transformer data.

[0127] It mainly includes the measured data of the transformer condition monitoring quantity, the weighting coefficient of the transformer condition monitoring quantity, the average repair time of the transformer and the average failure frequency of the transformer. Obtaining the line data mainly includes line type, line length, and line average failure rate. Get the actionable switch set. Obtain the grid structure of the distribution network. Obtain the maintenance strategy of the regional power supply bureau for the distribution network.

[0128] 2) Calculate the equipment health index index.

[0129] 2.1) Record the measured data set of the state monitoring quantity where the i-th equipment (...

Embodiment 3

[0181] A verification experiment of a distribution network reliability evaluation system that comprehensively considers the maintenance strategy and the equipment health index mainly includes the following steps:

[0182] 1) Input all required parameters, specifically including: input the number of equipment (transformers) n=6 in a certain distribution network, and the measured data x of the i-th equipment f=4 state monitoring quantities ij , where i=1,2,…,n, n is the number of transformers, j=1,2,…,f, f is the number of state monitoring quantities. The arrow indicates the type of the data (big excellent ↑, standard excellent Xiaoyou ↓), as shown in Table 1. The line data of the distribution network is shown in Table 2:

[0183] Table 1 State monitoring quantity of transformer

[0184]

[0185] Table 2 Line data

[0186] line number f node t-node 1 1 2 2 2 3 3 3 4 4 4 5 5 6 5 6 7 6 7 1 7

[0187] Input the lo...

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Abstract

The invention discloses a power distribution network reliability evaluation system considering an overhaul strategy and an equipment health index. The system comprises a power grid data acquisition module, an overhaul strategy acquisition module, an equipment health index calculation module, an equipment health index calculation module, an equipment reliability calculation module, a power distribution network fault probability calculation module, an operation scheme generation module, a reliability evaluation module and a database. The system provided by the invention can be used for evaluating the fault risk of the power distribution network under various conditions, facilitates the improvement of the operation mode of the power distribution network and the optimization of an overhaul strategy, and facilitates the improvement of a standby management system of an electric power company.

Description

technical field [0001] The invention relates to the technical field of distribution network reliability calculation, in particular to a distribution network reliability evaluation system considering maintenance strategy and equipment health index. Background technique [0002] At present, the distribution network reliability evaluation system of most power companies is based on the historical average failure rate of equipment, and the failure rate and repair time of load points are obtained through mathematical calculation. This method does not consider the real-time status of each device, and all similar devices use the same failure rate data, resulting in evaluation results that deviate from the actual situation and cannot accurately reflect the reliability of the distribution network. [0003] In terms of health index, most distribution network reliability evaluation systems do not consider the application of health index. A few literatures have proposed the scheme of us...

Claims

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Application Information

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IPC IPC(8): G06Q10/04G06Q10/00G06Q10/06G06Q50/06
CPCG06Q10/04G06Q10/06393G06Q10/20G06Q50/06Y04S10/50
Inventor 项波吴承骏张聪誉王皓张勇任洲洋文勇王波熊维兵罗海清伍元彪柏福生
Owner STATE GRID CORP OF CHINA
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