A Distribution Network Distributed Power Planning Model Based on Vector Sequence Optimization

A technology of distributed power supply and planning model, which is applied to AC networks, electrical components, circuit devices, etc. with energy trade/energy transmission authority. It can solve problems such as insufficient accuracy and achieve excellent accuracy and comprehensiveness. High accuracy Comprehensiveness and comprehensiveness, to achieve the effect of overall coordination

Active Publication Date: 2021-04-09
STATE GRID CORP OF CHINA +1
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  • 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 precision in the prior art, and provide a distribution network distributed power generation planning model based on vector sequence optimization with higher accuracy

Method used

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

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Embodiment 1

[0104]A distribution network distributed power planning model based on vector sequence optimization, including a rough evaluation model and an accurate evaluation model, the rough evaluation model includes a rough voltage quality model, a rough investment cost model, and the accurate evaluation model includes an accurate voltage quality model model, investment cost accurate model, and the constraints of voltage quality rough model and voltage quality accurate model include total power conservation constraints, node voltage constraints, and DG permeability constraints, among which,

[0105] The voltage quality rough model is:

[0106] V=v 2

[0107]

[0108] In the formula, V is the voltage quality index, v 2 is the voltage stability index, N is the total number of system buses, M is the total number of load buses, P ij is the active power from node i to node j, X ij is the reactance of the branch from node i to node j, Q ij is the reactive power from node i to node j, ...

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Abstract

A distribution network distributed power planning model based on vector sequence optimization, including rough evaluation model, precise evaluation model, sorting and hierarchical model, optimal compromise selection model, the rough evaluation model is used to evaluate all feasible solutions in the representation set Preliminary evaluation is carried out. The precise evaluation model is used to accurately evaluate all feasible solutions in the selected set. Both the rough evaluation model and the precise evaluation model use the voltage quality and the investment cost of distributed power as the objective function. The constraints include the total power Conservation constraints, node voltage constraints, and DG permeability constraints, the sorting and hierarchical model is used to sort and stratify the characterization set according to the rough evaluation value, and sort and stratify the selected set according to the precise evaluation value. The optimal compromise selection model is used It is used to select the optimal compromise scheme from the truly 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 model 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 distributio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38H02J3/00
CPCH02J3/008H02J3/381H02J2203/20
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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