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A Distributed Power Supply Planning Method and System

A distributed power supply and planning technology, applied in the direction of system integration technology, information technology support system, resources, etc., can solve the problems of time-consuming, genetic algorithm calculation speed and slow convergence speed, etc., to achieve less calculation time and system voltage stability Intuitive and simple effect

Active Publication Date: 2017-10-24
STATE GRID CORP OF CHINA +2
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Problems solved by technology

Some scholars propose a simple search algorithm to determine the best access location and capacity of distributed power, but this algorithm takes a lot of time; some scholars propose to use genetic algorithm to determine the best access location of distributed power, However, the genetic algorithm is very slow in calculation speed and convergence speed, and is only suitable for the optimization of multi-objective functions

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  • A Distributed Power Supply Planning Method and System
  • A Distributed Power Supply Planning Method and System
  • A Distributed Power Supply Planning Method and System

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Embodiment Construction

[0041] The present invention will be further described below through specific embodiments, but the present invention is not limited thereto.

[0042] Such as figure 1 As shown, it is a flowchart of a distributed power planning method of the present invention, and a distributed power planning method of the present invention includes the following steps:

[0043] Step S1: Establish a distribution network model and perform power flow calculation; this step is specifically to establish a distribution network model in the gridlab-d program according to the distribution network topology, voltage level, line impedance and load size of each branch, And in the gridlab-d program, use the Newton-Raphson method or the forward-backward method to calculate the power flow, and record the voltage amplitude and phase angle of each node of the output system.

[0044] Step S2: Calculate the voltage stability index VSI (voltage stability index) of each branch of the distribution network; this st...

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Abstract

The invention discloses a distributed power supply planning method and a system thereof. The method comprises the following steps: a distribution network is modeled and power flow calculation is carried out; a voltage stability index VSI of each branch is calculated; according to the VSI of each branch, the best access position of the distributed power supply is determined; an optimal solution is searched for an objective function, and the best capacity of the distributed power supply is determined. The best access position and the best access capacity of the distributed power supply can be determined respectively, distribution network voltage stability is improved, and system network losses can be reduced.

Description

technical field [0001] The present invention relates to the field of distributed power supply technology, in particular to a distributed power supply planning method based on voltage stability index and network loss optimization. Improve the voltage stability of the distribution network and reduce the network loss of the system. Background technique [0002] In recent years, the research and utilization of distributed power have attracted more and more attention. Compared with traditional power generation, distributed power generation is a renewable energy source. Integrating distributed power into the large power grid is considered to be the main way to save investment, reduce losses, and improve the stability and flexibility of the power system. However, the access of distributed power has changed the operation mode of the traditional grid. If the access location and capacity are not appropriate, it will not only increase the loss of the grid, but also reduce the reliabi...

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Application Information

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IPC IPC(8): H02J3/00G06Q10/06G06Q50/06
CPCY02E40/70Y04S10/50
Inventor 孙辰军师璞任惠李嘉恒段志国王东杰梁爽吴坎章孙佳伟
Owner STATE GRID CORP OF CHINA
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