Power distribution network reliability assessment state labeling method based on segments

A technology of status marking and reliability, applied in the field of power system, can solve problems such as low efficiency, and achieve the effect of efficient calculation and efficiency improvement

Active Publication Date: 2013-07-24
STATE GRID CORP OF CHINA +2
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Problems solved by technology

Since the number of feeder sections is much greater than the number of sections, the efficiency of the past state marking method is obviously lower than that of the method involved in the present invention

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  • Power distribution network reliability assessment state labeling method based on segments
  • Power distribution network reliability assessment state labeling method based on segments
  • Power distribution network reliability assessment state labeling method based on segments

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Embodiment Construction

[0063] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0064] The section-based reliability evaluation state notation method considering the action timing after distribution network failure is the content of the present invention. This method conducts in-depth searches based on sections rather than feeder sections, and considers a series of action sequences of distribution networks after faults, including fault isolation, distribution network reconfiguration, fault repair, and network topology restoration. state and mark it accordingly, so as to determine the power-off duration of each component and load after the fault occurs, and then accumulate its reliability index. The difficulty in this process is also the core innovation of the application of the present invention, that is, the section-based topology analysis and state labeling method.

[0065] The following technical ...

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Abstract

The invention relates to a state labeling method in the field of electrical power systems, in particular to a power distribution network reliability assessment state labeling method based on segments. The state labeling method is characterized by being based on the segments and combined with transferring supply after a distribution network faults, enumerating the faults in each segment, conducting state labeling on all segments and internal elements of the segments according to the faults in each segment, and saving labeling results in a vector data structure corresponding to a fault segment. The state labeling method comprises the following steps of (1) conducting reliability assessment state labeling pretreatment based on the segments; and (2) calculating reliability indexes in a circulated mode. The number of the segments in the power distribution network is fewer than that of feeder segments, so that search based on the feeder segments is only carried out when first depth search is carried out, then transversal is carried out on all segments according to the faults of each segment, a complex process that each feeder segment fault traverses all feeder segments is avoided, and the state labeling method is high in efficiency.

Description

technical field [0001] The invention relates to a state marking method in the field of electric power system, in particular to a section-based distribution network reliability evaluation state marking method. Background technique [0002] It is difficult for non-state marking algorithms to consider the timing of actions, and it is also difficult to consider the flexible configuration of circuit breaker positions. Past state notation methods searched based on feeder segments rather than sections, and there was a lot of repetitive searches. Since the number of feeder segments is much larger than the number of sections, the efficiency of the past state marking method is obviously lower than the method involved in the present invention. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a section-based distribution network reliability evaluation state labeling method. The section-based reliability...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/08
Inventor 马康刘军刘海涛苏剑
Owner STATE GRID CORP OF CHINA
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