Distributing line planning and distribution transform site selection optimizing method based on load moment theory

A technology of power distribution lines and optimization methods, applied in the field of power systems, can solve problems such as high maintenance costs, high equipment costs, and difficulty in popularization

Inactive Publication Date: 2014-02-05
STATE GRID CORP OF CHINA +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, such equipment costs a lot, and the maintenance cost is also very high, so it is difficult to promote

Method used

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  • Distributing line planning and distribution transform site selection optimizing method based on load moment theory
  • Distributing line planning and distribution transform site selection optimizing method based on load moment theory
  • Distributing line planning and distribution transform site selection optimizing method based on load moment theory

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Embodiment Construction

[0030] The theoretical basis of the present invention is that under a certain allowable voltage loss condition, the larger the load, the smaller the power supply radius; on the contrary, the smaller the load, the larger the power supply radius. Therefore, the relationship between the load and its power supply radius gives rise to the concept of load moment, which is the power multiplied by the distance of the load from the power source.

[0031] Load moment=P*L (unit: kW*km)

[0032] Among them: P--power L--the distance between the load and the power supply

[0033] Similar to the torque, when the current is conducted through the line, due to the difference in the material of the line itself and the thickness of the wire, the farther away from the power point, the lower the current voltage will be. Therefore, when we know the parameters such as the wire specification and model and the terminal load, we can easily get the voltage drop, as well as the maximum transmission dista...

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Abstract

Disclosed is a distributing line planning and distribution transform site selection optimizing method based on the load moment theory. The method is used for providing detection and analysis for line transformation such as line diameter change or load cutting and providing optimum load point distributing calculation and line specification model selection for an added plan based on known actual or future loads of a line by means of load moment calculation of the line loads during powerline transformation or added plan implementation. To solve the technical problems, the distributing line detection and power supply point distributing method takes county-level electric power enterprises as planning targets, the health degree of the line is calculated through a power grid model, and shunt lines are divided. Compared with the prior art, the distributing line planning and distribution transform site selection optimizing method based on the load moment theory has the advantages that load shunting is carried out on lines with low health degree through load moment calculation by means of the current power grid model, and powerline design or old line transformation is achieved based on an optimal economical-efficiency design with as little change as possible.

Description

technical field [0001] The invention relates to the field of power systems, in particular to a method for distribution line planning and distribution transformer site selection optimization based on load moment theory. Background technique [0002] At present, due to the relatively weak power foundation and planning within the jurisdiction of county-level power supply enterprises, the weak power supply capacity is still the most prominent problem. There are two reasons for this situation: First, the large jurisdiction A line has many load terminals, large line losses, and low voltage causes insufficient power supply capacity on the entire line; second, the peak and valley times of the line terminal power load load are obvious and concentrated, and the line and substation capacity is limited and the layout is difficult to adjust in time In some cases, overloading causes failure and damage of power distribution equipment, and power outages are common. For this, we need to opt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q50/06
Inventor 孙献春王培林冯超黄宏盛钱璟朱晔李峰辉钱隆翔胡喆戴元安胡晓伟施旭昶葛琪朱翔梁明源范付元
Owner STATE GRID CORP OF CHINA
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