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A method of power system reliability assessment

A power system and reliability technology, applied in data processing applications, instruments, calculations, etc., can solve problems such as redundant fault impact analysis, complex programming algorithms, etc., to achieve clear concepts and improve efficiency

Active Publication Date: 2022-03-29
SOUTHWEST JIAOTONG UNIV
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  • Description
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Problems solved by technology

With the expansion of power system scale, fault impact analysis is very cumbersome, and each programming algorithm is also very complicated

Method used

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  • A method of power system reliability assessment
  • A method of power system reliability assessment
  • A method of power system reliability assessment

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Embodiment Construction

[0046] The implementation steps of the present invention will be further described below in conjunction with the drawings and specific embodiments.

[0047] The implementation flow chart of this method is as follows figure 1 shown and specified as follows:

[0048] Step 1. Regional division of the power system

[0049]According to the characteristic that the power system uses switchgear for topology transformation, the power system is divided into independent areas. The zone consists of elements such as lines and transformers and does not contain switchgear inside. Treat each region as a node,

[0050] And denoted by Z; the switchgear is regarded as a branch, and denoted by S. The areas or nodes, switchgear or branches are collectively referred to as components, and the nodes containing power are defined as power nodes, and the nodes containing loads are defined as load nodes. Calculate the reliability parameters for each region, and label the power nodes and load nodes....

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Abstract

The invention discloses a power system reliability evaluation method and relates to the technical field of power system reliability evaluation. Use the switchgear to divide the power system into several areas, treat each area as a node, and regard the switchgear as a branch; use the search algorithm to establish the traditional minimum path set; connect the minimum path directly or through an isolation switch The elements of the minimum path are also included in the minimum path, and it is called the improved minimum path; the improved minimum path set is described by the minimum path matrix; the column operation is performed according to the minimum path matrix to obtain the first-order and second-order cut sets of the system, and the first-order cut set The set must be the first-order minimum cut set, and then the second-order minimum cut set can be obtained by processing the second-order cut set. The fault mode of circuit breaker refusal can be obtained by searching from the first-order minimum cut set. The obtained failure mode contains the recovery information of the faulty component, so the reliability evaluation of the system can be simplified.

Description

technical field [0001] The invention relates to the technical field of power system reliability assessment. Background technique [0002] With the development of society, the power supply reliability of power system has been widely concerned. At present, power system reliability assessment has become the basis for decision-making in power sector planning and operation management. Power system reliability assessment methods can be divided into simulation methods and analytical methods. Simulation methods are time-consuming to obtain accurate reliability metrics. The analysis method is mainly the failure mode effect analysis method, which needs to enumerate all the failure modes of the load point. With the expansion of the power system scale, the fault impact analysis is very cumbersome, and the programming algorithms are also very complicated. Contents of the invention [0003] The purpose of the present invention is to provide a power system reliability assessment meth...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/06393G06Q50/06
Inventor 马庆安
Owner SOUTHWEST JIAOTONG UNIV
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