Rapid reliability calculation method of distributed power supply-containing power distribution system

A technology of distribution network system and distributed power supply, applied in electrical components, circuit devices, AC network circuits, etc., can solve the problems of long calculation time and rarely consider the common cause failure of the original components, so as to reduce the time, The effect of reducing the calculation process

Active Publication Date: 2018-07-13
ZHEJIANG UNIV
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  • Application Information

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Problems solved by technology

[0005] Disadvantage 1 of the existing technology: the traditional reliability comparison method is mainly concentrated on the side of the power generation system, and rarely concentrated on the side of the distribution network system containing distributed power sources (distributed power sources are distributed power sources that are not directly connected to the centralized power transmission system , and distributed on the user side of the entire power system, so that the power grid can be supplemented at any time
[0006] Disadvantage 2 of the existing technology: the curren

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  • Rapid reliability calculation method of distributed power supply-containing power distribution system
  • Rapid reliability calculation method of distributed power supply-containing power distribution system
  • Rapid reliability calculation method of distributed power supply-containing power distribution system

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Embodiment Construction

[0060] The present invention will be further described below with reference to the drawings and embodiments.

[0061] The embodiment of the present invention is as follows:

[0062] Step 1: Find the basic system, and use the reliability calculation formula of the distribution grid with distributed power sources considering the line failure rate to find the reliability of the basic system;

[0063] There are 5 system structures in this embodiment, such as Figure 3 ~ Figure 6 As shown, assuming that all the component parameters are consistent, the reliability of the component without common cause failure is 0.98, the independent reliability of the component with common cause failure is 0.5, and the reliability of common cause failure is 0.6.

[0064] In this embodiment, as figure 2 The total number of components in the system 1 shown is the smallest and there is no common cause failure relationship between the components, so the basic system is as follows figure 2 The system 1 shown ...

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Abstract

The invention discloses a rapid reliability calculation method of a distributed power supply-containing power distribution system. The rapid reliability calculation method comprises the steps of extracting a basic system from a plurality of power distribution systems, and calculating reliability of a basic system; considering an external parallel component in the power distribution systems, and calculating to obtain external approximate reliability of a remaining system according to the reliability of the basic system; and judging whether an internal parallel component exists or not, and taking the external approximate reliability directly obtained in the step 2 or internal approximate reliability obtained in the step 3 as final reliability. The reliability of the basic power distributionsystem is calculated, a traditional algorithm is improved by time according to the method, and the calculation time is reduced.

Description

Technical field [0001] The present invention belongs to the reliability comparison of distribution network systems containing distributed power sources, and specifically relates to a method for quickly calculating the reliability of distribution network systems containing distributed power sources. Background technique [0002] Reliability technology was first developed from the aerospace industry and electronics industry after the Second World War. The mission of the power system is to provide users with a steady stream of qualified power. Various types of faults occur in various equipment of the power system, including primary equipment such as distributed power sources, transformers, transmission lines, circuit breakers, and secondary equipment that are matched with them, which affect the normal operation of the power system and the normal power supply to users. Power system failures will cause different degrees of economic losses to power companies, users, and certain links i...

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Application Information

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IPC IPC(8): H02J3/00
CPCH02J3/00H02J2203/20
Inventor 胡怡霜丁一
Owner ZHEJIANG UNIV
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