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Distributed power supply credible capacity evaluation method based on equal power supply reliability

A distributed power supply and reliability technology, applied in resources, photovoltaic power generation, wind power generation, etc., can solve the same or similar problems that have not been found, and achieve the effect of reducing losses and accurate reliability indicators

Active Publication Date: 2022-04-01
TIANJIN UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0006] After searching, no documents of the prior art identical or similar to the present invention were found

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  • Distributed power supply credible capacity evaluation method based on equal power supply reliability
  • Distributed power supply credible capacity evaluation method based on equal power supply reliability
  • Distributed power supply credible capacity evaluation method based on equal power supply reliability

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Embodiment Construction

[0051] specific implementation plan

[0052] Embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings:

[0053] An evaluation method for trusted capacity of distribution network distributed generation based on equal power supply reliability index, such as figure 1 shown, including the following steps:

[0054] Step 1. Determine the installed capacity of the distributed power supply;

[0055] The installed capacity of distributed power fans and photovoltaics is represented by P w and P pv Indicates that when calculating the power supply reliability index before the distributed power generation is connected to the grid, let P w and P pv is equal to 0.

[0056] In this embodiment, the installed capacity of distributed power fans and photovoltaics is initialized, assuming that they are P w and P pv , let P w and P pv is equal to 0.

[0057] Step 2. Establish a simulation system model of distributed power su...

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Abstract

The invention discloses a distributed power supply credible capacity evaluation method based on equal power supply reliability. The method comprises the following steps: S1, determining the installed capacity of a distributed power supply; s2, establishing a model of a distributed power supply, a power grid element and a load in the system; s3, generating a system time sequence operation state; s4, analyzing a fault result based on intelligent island division; s5, calculating a reliability index based on a sequential Monte Carlo method; and S6, carrying out credible capacity search based on a secant string method. According to the method, the credible capacity of a distributed power supply is evaluated based on an equal power supply reliability principle, and an island division method based on a look-ahead greedy algorithm is introduced into reliability calculation aiming at the characteristic that a topological structure of a power distribution network can be flexibly changed through an interconnection switch, so that the power supply reliability of a system is accurately evaluated through a scientific island division scheme; and the evaluation result of the credible capacity is more accurate.

Description

technical field [0001] The invention belongs to the technical field of distributed power supply capacity planning of an active distribution network, and relates to a distribution network distributed power trusted capacity evaluation method, in particular to a distribution network distributed power trusted capacity evaluation method based on an equal power supply reliability index. Background technique [0002] In order to deal with environmental problems such as air pollution and global warming, clean energy such as wind energy and solar energy has been vigorously developed. As distributed power sources such as wind power and photovoltaics are widely connected to the distribution network, the power supply capacity of the power grid has been improved. However, due to the uncertainty of the output of distributed power such as wind and solar, its capacity value cannot be fully considered in power system planning. In order to effectively measure the power supply capacity of win...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02J3/48G06Q10/06
CPCY02E10/56Y02E10/76Y04S10/50
Inventor 孙冰陈家浩李云飞曾沅张文旭
Owner TIANJIN UNIV
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