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Method for accurately calculating maximum power supply capacity of medium voltage distribution network

A technology of maximum power supply capacity and calculation method, applied in electrical components, circuit devices, AC network circuits, etc., and can solve problems such as large errors

Active Publication Date: 2012-11-14
TIANDAQIUSHI ELECTRIC POWER HIGH TECH CO LTD
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Problems solved by technology

However, this paper only theoretically describes the general idea of ​​evaluating the power supply capacity of the distribution network, which is far away from the actual application to the calculation of the distribution network. In the evaluation process, the substation is used as the smallest unit, and there are many possibilities for the calculation results. sex, large error

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  • Method for accurately calculating maximum power supply capacity of medium voltage distribution network
  • Method for accurately calculating maximum power supply capacity of medium voltage distribution network
  • Method for accurately calculating maximum power supply capacity of medium voltage distribution network

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Embodiment Construction

[0048]In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0049] In order to improve the calculation accuracy and meet the actual application, see figure 1 , an embodiment of the present invention provides a method for accurately calculating the maximum power supply capacity of a medium-voltage distribution network.

[0050] 101: Taking the maximum power supply capacity as the objective function, establishing a maximum power supply capacity model;

[0051] Medium-voltage distribution network TSC (Total Supply Capability, maximum power supply capacity) refers to the maximum load supply capacity of power supply equipment in a certain power supply area under the condition of meeting the "N-1" criterion, considering the actual operation of the network. And the load transfer under the "N-1" fault ...

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Abstract

The invention discloses a method for accurately calculating the maximum power supply capacity of a medium voltage distribution network, which relates to the field of calculating the index power supply capacity of a distribution network of a power distribution system. The method comprises the following steps of: establishing a mathematical model taking the maximum power supply capacity TSC of the power distribution network as an objective function; converting the calculation into a problem of linear programming; and calculating the objective function by using linear programming software, wherein the calculated objective function is the accurate maximum power supply capacity under the existing 'N-1' restriction. The calculation result is more accurate, so the method can accurately calculatethe power supply capacity of the power distribution network, and provides a new quantification, theory and evaluation tool for the power distribution network.

Description

technical field [0001] The invention relates to the field of calculating the power supply capacity of distribution network indexes of power distribution systems, in particular to an accurate calculation method for the maximum power supply capacity of a medium-voltage distribution network. Background technique [0002] Urban power distribution system is an important infrastructure and necessary energy supply system for urban modernization, and its construction directly affects the development of urban economy, the improvement of people's living standards and the optimization of investment environment. For a long time, the power grids in many cities in my country have suffered from insufficient power supply capacity, uncertain network transfer capabilities, low utilization of power grid equipment, unbalanced loads, and large losses. As demand for electricity continues to increase, so does the need for continuous expansion of the grid. In order to adapt to the rapid economic d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00
Inventor 肖峻王成山葛少云谷文卓郭晓丹
Owner TIANDAQIUSHI ELECTRIC POWER HIGH TECH CO LTD
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