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Algorithm for Reliability Analysis of Distribution Network with Distributed Generation Considering Line Failure Rate

A distributed power supply and analysis algorithm technology, applied in the direction of fault location, measurement of electricity, measurement of electrical variables, etc., can solve the problems of ignoring the failure rate of lines, fewer reliability analysis algorithms, and errors

Active Publication Date: 2019-07-02
ZHEJIANG UNIV
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  • Application Information

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Problems solved by technology

[0007] Disadvantage 1 of the existing technology: traditional reliability calculation algorithms are mainly used in systems with centralized distributed power sources, and there are fewer reliability analysis algorithms for distribution networks with distributed power sources
[0008] Disadvantage 2 of the existing technology: The current distribution network with distributed power sources considers distributed power sources and lines separately, and uses distributed power sources as an additional part of the entire power distribution system. The distribution network is considered as two parts, let it be considered, and the reliability of the distributed power supply and the original distribution network are not considered as a whole.
[0009] Disadvantage 3 of the existing technology: The existing technology ignores the failure rate of the line, which will bring a certain error in some occasions that require high reliability

Method used

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  • Algorithm for Reliability Analysis of Distribution Network with Distributed Generation Considering Line Failure Rate
  • Algorithm for Reliability Analysis of Distribution Network with Distributed Generation Considering Line Failure Rate
  • Algorithm for Reliability Analysis of Distribution Network with Distributed Generation Considering Line Failure Rate

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Embodiment Construction

[0073] The present invention will be further described below in conjunction with drawings and embodiments.

[0074] Embodiments of the present invention are as follows:

[0075] Step 1: Propose the equivalent series-parallel structure of distributed power distribution network with fault-free lines (considering the line failure rate).

[0076] Such as figure 2 Shown, L 1 ~ L n Indicates n principal components, L 1 Indicates the basic distributed power supply, L 2 ~ L n Indicates the basic components on the distribution network line, the basic components are the transmission lines or transformers and other components that come with the original distribution network, and G indicates the additional distributed power supply.

[0077] figure 2Among them, the first series-parallel substructure is composed of the basic distributed power supply L 1 and in parallel at the base distributed power L 1 The second series-parallel substructure is composed of basic components L 2 and...

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Abstract

The invention discloses a reliability analysis algorithm of a power distribution network containing distributed power supplies and considering a line fault rate; the algorithm comprises the followingsteps: proposing a distributed power supply power distribution network equivalent series-parallel structure considering the line fault rate, and carrying out equivalent treatment for the distributed power supply power distribution network so as to obtain a series-parallel structure; respectively calculating the reliability of the power distribution network system needing at least one distributed power supply for operation and the reliability of the power distribution network system needing at least a plurality of distributed power supplies for operation. The algorithm can improve a conventional method in the time and precision aspects, thus reducing the calculation time.

Description

technical field [0001] The invention belongs to the field of reliability calculation of distribution network with distributed power supply, and in particular relates to a reliability analysis algorithm for distribution network with distributed power supply considering line failure rate. Background technique [0002] Reliability technology was first developed from the aerospace industry and the electronics industry after the Second World War. The task of the power system is to provide users with continuous and qualified electrical energy. Due to various equipment in the power system, including primary equipment such as distributed power supplies, transformers, transmission lines, and circuit breakers, and their supporting secondary equipment, different types of faults will occur, which will affect the normal operation of the power system and the normal power supply to users. Power system failures will cause varying degrees of economic losses to power companies, users and cert...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/08
CPCG01R31/088
Inventor 丁一胡怡霜
Owner ZHEJIANG UNIV
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