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A Distributed Power Planning Method for Distribution Network Based on Vector Sequence Optimization

A technology of distributed power and sequence optimization, applied in data processing applications, forecasting, instruments, etc., can solve problems such as insufficient accuracy, achieve excellent accuracy and comprehensiveness, high practicability and effectiveness, high accuracy and comprehensive effect

Active Publication Date: 2021-08-24
STATE GRID CORP OF CHINA +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the problem of insufficient accuracy in the prior art, and to provide a distribution network distributed power planning method based on vector sequence optimization with higher accuracy

Method used

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  • A Distributed Power Planning Method for Distribution Network Based on Vector Sequence Optimization
  • A Distributed Power Planning Method for Distribution Network Based on Vector Sequence Optimization
  • A Distributed Power Planning Method for Distribution Network Based on Vector Sequence Optimization

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Embodiment 1

[0118] A distribution network distributed power planning method based on vector sequence optimization. In this embodiment, the IEEE 30-node distribution network system built in Matpower is used as a calculation example for simulation analysis, and the following steps are followed in turn:

[0119] Step 1. Establish a distribution network planning model containing distributed power, which includes a rough evaluation model and an accurate evaluation model. The rough evaluation model includes a rough voltage quality model and a rough investment cost model. The accurate evaluation model includes voltage quality Accurate model, accurate model of investment cost, and the constraints of rough voltage quality model and accurate voltage quality model include total power conservation constraints, node voltage constraints, and DG permeability constraints;

[0120] The voltage quality rough model is:

[0121] V=v 2

[0122]

[0123] In the formula, V is the voltage quality index, v ...

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Abstract

A distribution network distributed power planning method based on vector sequence optimization. This method first establishes a distribution network planning model containing distributed The model makes a preliminary evaluation of the representation set, and then sorts and stratifies all the solutions in the representation set according to the rough evaluation value to obtain the OPC curve, and then determines the selected set for accurate evaluation, and uses the precise evaluation model to perform precise evaluation on the selected set. The selected set is sorted and stratified according to the accurate evaluation value, and the first layer after sorting and stratification is taken to form a truly good enough solution, and finally the optimal compromise is selected from the really good enough solution set. This design not only has high accuracy, practicability and effectiveness, but also can effectively improve the voltage quality.

Description

technical field [0001] The invention belongs to the field of distribution network planning, and in particular relates to a distribution network distributed power supply planning method based on vector sequence optimization. Background technique [0002] Distributed power generation (DG) refers to a system in which power generation modules are arranged near the user side in a small-scale (small modules with power generation power ranging from a few KW to 50MW) in a decentralized manner, and can independently output electric energy. Distributed power generation is often mainly connected to the distribution network, which will have an impact on the power quality of each node of the distribution network, the level of power supply reliability, the level of network loss, and the configuration of relay protection. Taking into account the topological structure and load distribution of distributed power generation, the degree of influence of distributed power generation on distributi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/04G06Q50/06
CPCG06Q10/04G06Q50/06
Inventor 鄢晶欧阳俊蒋霖杜治杨东俊周斌胡济洲郭齐涛张籍柴继勇熊志周明星王英其郑旭雷庆生颜炯郑云飞杨明陈竹
Owner STATE GRID CORP OF CHINA
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