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10kV feeder optimal load capacity calculation method considering different load structures

An optimal load and calculation method technology, applied in calculation, computer-aided design, design optimization/simulation, etc., can solve the problem that it is difficult to reasonably measure the optimal load capacity of the line

Pending Publication Date: 2021-02-12
ECONOMIC TECH RES INST STATE GRID QIANGHAI ELECTRIC POWER
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method that can not only solve the problem that it is difficult to reasonably measure the optimal load capacity of lines under different load structures by using the "N-1" criterion, but also fully consider the economical operation of lines under different load structures. Calculation method of optimal load capacity of 10kV feeder considering different load structures

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  • 10kV feeder optimal load capacity calculation method considering different load structures
  • 10kV feeder optimal load capacity calculation method considering different load structures
  • 10kV feeder optimal load capacity calculation method considering different load structures

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Embodiment Construction

[0047] The method for calculating the optimal load capacity of a 10kV feeder considering different load structures of the present invention will be described in detail below with reference to the embodiments and the accompanying drawings.

[0048] To study the optimal load capacity of 10kV feeder, it is necessary to comprehensively consider the economy of total investment and the safety of operation, including the following three aspects:

[0049] (1) Economical utilization. The utilization economy is mainly reflected by the total load brought by the 10kV feeder. For the same grid structure, the greater the total load carried by the 10kV feeder, the lower the construction cost of the 10kV feeder corresponding to the unit load, and the more economical the utilization of the 10kV feeder.

[0050] (2) Power supply quality. The quality of power supply is mainly reflected by the voltage qualification rate. The voltage qualification rate can be regarded as another form of equipme...

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Abstract

A 10kV feeder line optimal load capacity calculation method considering different load structures comprises the steps that a 10kV feeder line optimal load capacity calculation model is established, and the calculation model takes the minimum total investment of a distribution line and the minimum power grid income as an objective function and takes equipment load rate constraints, equipment load matching constraints and reliability constraints as constraint conditions; and then, an fmincon function in matlab simulation is called to solve the 10kV feeder line optimal load capacity calculation model. According to the 10kV feeder optimal load capacity calculation method considering different load structures, the reliability and economy combined 10kV feeder optimal load capacity calculation method is provided, and the method can be suitable for calculating the 10kV optimal load capacity under different load structures. According to the method, the asset utilization level of the 10kV feederline is evaluated theoretically, and a reference basis is provided for load planning and operation level analysis of the 10kV feeder line.

Description

technical field [0001] The invention relates to a method for calculating the optimum load capacity of a 10kV feeder. In particular, it relates to a method for calculating the optimal load capacity of 10kV feeders considering different load structures. Background technique [0002] Scientifically and rationally evaluating the optimal load capacity of the distribution network is of great significance to improve the utilization level of equipment, ensure the reliable power supply of the distribution network and save investment costs, so it has become the focus of current technical personnel. Reference [1] proposes a load capacity evaluation method for electrical equipment considering the whole life cycle considering the load rate, peak load rate and actual operating years of the equipment. Reference [2] defines the equipment utilization rate in combination with the concept of load rate, and considers the "N-x" criterion, load characteristics, load development and other influen...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F111/04G06F111/08G06F113/04
CPCG06F30/20G06F2111/04G06F2113/04G06F2111/08
Inventor 黄存强刘兴文赵雪田旭安娟张桂红
Owner ECONOMIC TECH RES INST STATE GRID QIANGHAI ELECTRIC POWER
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