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Load distribution based method for calculating recently planned annual line loss of medium-voltage distribution network

A technology of load distribution and load distribution coefficient, applied in computing, special data processing applications, instruments, etc., can solve problems such as long time-consuming and complicated processes

Active Publication Date: 2011-04-27
TIANDAQIUSHI ELECTRIC POWER HIGH TECH CO LTD
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Problems solved by technology

[0020] The purpose of the present invention is to overcome the deficiencies of the prior art, provide a method for calculating the annual line loss of the medium voltage distribution network based on load distribution, and solve the problem that the traditional medium voltage line loss calculation method is complicated and takes a long time

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  • Load distribution based method for calculating recently planned annual line loss of medium-voltage distribution network
  • Load distribution based method for calculating recently planned annual line loss of medium-voltage distribution network
  • Load distribution based method for calculating recently planned annual line loss of medium-voltage distribution network

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Embodiment Construction

[0102] Embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0103] A method based on load distribution to calculate the annual line loss in the short-term planning of the medium voltage distribution network, such as figure 1 shown, including the following steps:

[0104] 1. Calculate the load distribution coefficient N of a typical load distribution line;

[0105] In order to simplify the calculation of line loss, it is assumed that the load along the feeder of the medium-voltage line is continuously distributed and the voltage drop is 0, so that the typical load distribution line of the medium-voltage line is divided into the following forms: (1) linear incremental distribution, (2) linear Decreasing distribution, (3) increasing in the first half, 0 in the second half, (4) decreasing in the first half, 0 in the second half, (5) 0 in the first half, increasing linearly in the second half, (6) 0 in the ...

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Abstract

The invention relates to a load distribution based method for calculating recently planned annual line loss of a medium-voltage distribution network. The method comprises the following steps of: (1) calculating a load distribution coefficient of a typical load distribution line; (2) calculating a load distribution coefficient of an actual line; (3) virtualizing a return line, wherein parameters related to line loss calculation are all average parameters, and the loss of the return line is used as the average loss of the medium-voltage line of the planning area; (4) calculating the loss of a trunk line of the virtual line; (5) calculating the loss of a branch line of the virtual line; and (6) calculating the loss of the medium-voltage line in the planning area. The method has reasonable design, solves the problem that the failure of acquisition of the load data of a recently planned annual distribution network causes difficulty in line loss calculation, realizes the quick estimation of the line loss of the whole planning area and has the characteristics of simple operation, easier obtaining of collected data and short calculation time.

Description

technical field [0001] The invention belongs to the field of medium-voltage distribution networks, in particular to a method for calculating the short-term planned annual line loss of the medium-voltage distribution network based on load distribution. Background technique [0002] Distribution network line loss calculation is an important task in distribution management and operation. At present, the main calculation methods for medium voltage distribution network line loss are: [0003] (1) Root mean square current method: Its physical concept is the power loss generated by the root mean square current flowing in the line, which is equivalent to the power consumed by the actual load in the same period. The root mean square current method is widely used, and it is suitable for the calculation of power grid line loss with relatively balanced power supply and small load peak-to-valley difference. However, the calculation of the root mean square current needs current data repr...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 刘浩宇葛少云申刚李小宇徐海东
Owner TIANDAQIUSHI ELECTRIC POWER HIGH TECH CO LTD
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