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A Method for Evaluating Operational Reliability of Distribution Network in Power System

A power system and distribution network technology, applied in data processing applications, instruments, computing, etc., can solve problems such as the health status of non-distribution network networks, and achieve the effect of improving the asset management system and improving planning

Active Publication Date: 2017-06-13
TSINGHUA UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There have been some studies on the distribution equipment level health index, but there is still no research on the health status of the distribution network level

Method used

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  • A Method for Evaluating Operational Reliability of Distribution Network in Power System
  • A Method for Evaluating Operational Reliability of Distribution Network in Power System
  • A Method for Evaluating Operational Reliability of Distribution Network in Power System

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Embodiment Construction

[0033] The distribution network is usually composed of main feeder, branch feeder and the components connected thereto. The method of the present invention relates to a power system distribution network including a main feeder and multiple branch feeders. Its structure is as follows: figure 1 As shown, firstly, the search is started from the main feeder 1, and the branch feeders on the main feeder are searched, such as figure 1 The first-level branch feeder 2 and the second-level branch feeder 3 and their connected components (including isolating switches, section circuit breakers, fuses, branch lines, etc.) are divided into the same layer. , to obtain network hierarchical statistics through layer-by-layer search.

[0034] The modeling method of distribution network health index in the power system proposed by the present invention comprises the following steps:

[0035] Assume that the distribution network of the power system includes a main feeder and multi-level branch fee...

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Abstract

The invention relates to a method for evaluating running reliability of a power distribution network in a power system, and belongs to the technical field of reliability analysis of the power system. According to the method, health indexes in unit elements in the power distribution network are taken as the basis, and the health index of the system is evaluated through combination of conversion calculation of the health indexes and the health index probability form and the connection manner of the health indexes and the health index probability. According to the analysis result, repair cycle of the equipment is reasonably determined; repair cost of power grid running and power equipment is reduced, and running reliability of the equipment is improved. The health state of the power distribution network is evaluated through the index form of numerical values from one to ten, and the theoretical basis is provided for reliable running and repair plan making of the power distribution network, so that planning, operation, maintenance and the management level of the power distribution network can be further improved, and the asset management system of the power distribution network is perfected.

Description

technical field [0001] The invention relates to an operation reliability evaluation method of a distribution network in a power system, belonging to the technical field of power system reliability analysis. Background technique [0002] The power load in foreign developed countries has basically entered a period of steady growth since the 1980s, the scale of the power grid has been basically fixed, and most of them have entered and are in the mature stage of development. The development and management of the distribution network pay more attention to operational reliability and economy, promote intelligent technology, and improve service quality. In order to meet the needs of the aging peak of large-scale equipment in the UK, EA company in the UK has developed a "risk management system based on grid status assessment". Countries such as Malaysia and Singapore have been successfully applied. [0003] Since the State Grid Corporation of my country fully launched the life cyc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q50/06
CPCG06Q50/06
Inventor 程林吴争王旭吴强李毅强黄河
Owner TSINGHUA UNIV
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