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Power supply grid and unit optimal division method based on global overall planning

A technology of power supply unit and grid, applied in the direction of constraint-based CAD, design optimization/simulation, electrical digital data processing, etc., can solve problems such as shortage, randomness of results, difficulty in achieving technical and economic rationality, etc., and achieve enhanced implementation performance, improve comprehensive line loss rate, and save investment

Pending Publication Date: 2020-11-17
CHONGQING UNIV +1
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Problems solved by technology

However, the current division method of power supply units is mainly derived from relatively general technical principles and the experience of planners, and lacks a clear definition of "grid". The result is arbitrary and difficult to achieve technical and economic rationality

Method used

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  • Power supply grid and unit optimal division method based on global overall planning
  • Power supply grid and unit optimal division method based on global overall planning
  • Power supply grid and unit optimal division method based on global overall planning

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Embodiment Construction

[0033] The present invention will be further described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0034] refer to figure 1 As shown, a power supply unit division method based on the global optimization model of power supply partition includes the following steps:

[0035] 1) Based on the candidate trunk channel and its limit capacity of the candidate channel network in the planning area, under the condition of satisfying the independent connectivity of each zone channel and the maximum allowable transfer distance, establish a power grid with the largest number of inter-station power grids, non-in-station A multi-objective power supply partition global optimization model with the largest number of self-loop power supply units and the smallest total cost of the main channel in the inter-power supply grid;

[0036]

[0037] In the formula: N zj and N fzj are the total number of inter-station power supply grids and the total nu...

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Abstract

The invention discloses a power supply grid and unit optimal division method based on global overall planning, relates to the technical field of power distribution network planning, and can consider the technical feasibility and economy of a power supply unit, and the method comprises the steps: firstly constructing a planning region candidate channel layout; secondly, determining a standby supplystation of each load based on the minimum comprehensive cost of the trunk transfer line, and sequentially dividing the planning area into an inter-station power supply grid and a non-inter-station power supply grid; thirdly, subdividing a grid supply area with overlarge load into unit sub-supply areas with moderate load based on the principle of uniform distribution along the load line and average distribution of line loads; then, considering the influence of factors such as land properties, power supply areas and distributed power supplies on unit division, and locally adjusting the unit sub-supply areas by adopting a comprehensive annual profit calculation model; and finally, matching each unit sub-supply area in each grid by adopting an exhaustion method according to the minimum comprehensive cost of the trunk transfer line, and sequentially forming an inter-station power supply unit, a self-loop power supply unit and a radiation power supply unit networking scheme.

Description

technical field [0001] The invention relates to the technical field of distribution network planning. Background technique [0002] With the continuous expansion and rapid development of the distribution network scale, it is more and more difficult to plan the medium-voltage network structure for the entire region. scheme. In order to effectively solve the problem of "optimization" and "landing" of the planning scheme, a simpler and more effective method is to divide the entire planning area into geographically and electrically independent power supply zones (only electrical connections exist in power supply substations), and then target For small-scale power supply partitions, it is more intuitive and simple to plan the network structure. Among them, the rational division of the power supply grid / unit is the key. [0003] Reasonable power supply grid / unit division scheme, first, can transform the complex grid planning of the entire region into relatively independent inte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/18G06F30/20G06F111/04G06F113/04
CPCG06F30/18G06F30/20G06F2111/04G06F2113/04
Inventor 王主丁王敬宇王卫平李诗春
Owner CHONGQING UNIV
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