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Method for solving contribution value of distributed power supplies to line loss based on entropy weight principle

A technology of distributed power supply and contribution value, applied in emergency treatment of AC circuit layout, electrical components, circuit devices, etc., can solve problems such as lack of measurement methods

Active Publication Date: 2016-03-16
FOSHAN POWER SUPPLY BUREAU GUANGDONG POWER GRID
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Problems solved by technology

In addition, due to the lack of accurate measurement methods and reasonable calculation methods for the contribution of distributed power sources to line loss, distributed power sources do not need to bear the responsibility for the increase in line loss at this stage

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  • Method for solving contribution value of distributed power supplies to line loss based on entropy weight principle
  • Method for solving contribution value of distributed power supplies to line loss based on entropy weight principle
  • Method for solving contribution value of distributed power supplies to line loss based on entropy weight principle

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Embodiment Construction

[0051] Such as figure 1 and figure 2 As shown, the method for solving the contribution value of distributed power supply to line loss based on the principle of entropy weight in the present invention includes:

[0052] Step S1. For the tested distribution network containing n distributed power sources, respectively collect the tested distribution network in the state where all n distributed power sources are not connected to the grid and when the n distributed power sources are all connected to the grid. Data, the data includes the network topology, the voltage of each bus and the size of each load, where n is a positive integer;

[0053] Step S2, according to the data collected in step S1, for the tested distribution network under the condition that all n distributed power sources are connected to the grid, establish a grid-connected capacity index X 1 , Grid-connected penetration rate index X 2 , Grid-connected position index X 3 , power factor index X 4 and annual uti...

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Abstract

The invention discloses a method for solving a contribution value of distributed power supplies to line loss based on an entropy weight principle. The method comprises the following steps that: data of a tested power distribution network including n distributed power supplies when all the n distributed power supplies are not in a grid-connected state and when all the n distributed power supplies are in a grid-connected state are acquired; an influence index system of the distributed power supplies to the line loss is established based on the acquired data; the contribution rate of each grid-connected distributed power supply to the line loss of the tested power distribution network is solved by adopting an entropy weight method; and thus, measurement of the contribution rate of each distributed power supply to the line loss of the tested power distribution network is realized. According to the invention, power flow calculation of the tested power distribution network when all the n distributed power supplies are not in the grid-connected state and when all the n distributed power supplies are in the grid-connected state is carried out respectively, such that the line loss contribution value of each grid-connected distributed power supply to the line loss of the tested power distribution network increased due to grid connection of the n distributed power supplies can be obtained by calculation.

Description

technical field [0001] The invention relates to a method for measuring the contribution value of distributed power sources to distribution network line loss based on the principle of entropy weight. Background technique [0002] The application of distributed power is more and more extensive, and the introduction and integration of distributed power into the existing distribution network system is the development trend of distributed power. However, with the increase of the grid-connected penetration rate of distributed power generation, its impact on distribution network line loss cannot be ignored, which has gradually attracted the attention of relevant staff such as power grid line loss calculation and distribution network planning. [0003] The degree of influence of grid-connected distributed power generation on distribution network line loss depends on multi-source factors such as the access location of grid-connected distributed power generation, its relative size to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00
CPCH02J3/00H02J3/001
Inventor 李冉倪伟东陆锦培汤志锐罗伟明吴树鸿龙雪涛许诤何引生
Owner FOSHAN POWER SUPPLY BUREAU GUANGDONG POWER GRID
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