Transmission section search method considering network automatic contraction

A power transmission section, automatic shrinking technology, applied in the field of search, can solve problems such as the failure to fully reflect the actual characteristics of the cross section, the excessive search volume of power transmission sections, and the missed selection, etc., to achieve the effect of easy understanding, fast speed, and avoidance of search.

Active Publication Date: 2014-06-04
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, the actual power system is a very complex network. Although some characteristics of the transmission section are reflected in the actual power grid, they cannot fully reflect the actual characteristics of the section, which will lead to excessive search volume or missing selection of the transmission section.

Method used

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  • Transmission section search method considering network automatic contraction
  • Transmission section search method considering network automatic contraction

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Embodiment Construction

[0040] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0041] The invention provides a method for searching a power transmission section considering the automatic contraction of the network, and the method includes the following steps:

[0042] Step 1: Divide the transmission section into a high voltage level transmission section and an electromagnetic ring network transmission section;

[0043] Step 2: Searching for the high-voltage level transmission section;

[0044] Step 3: Search the transmission section of the electromagnetic ring network.

[0045] The high-voltage tie lines between regions and between provinces in the actual power grid have the following basic characteristics:

[0046] ●There is no low-voltage level contact line, that is, it does not constitute an electromagnetic ring network;

[0047] ●The direction of the line power is consistent, there may be power inconsistency, but it is very small...

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Abstract

The invention provides a transmission section search method considering network automatic contraction. According to the basic information of an actual power system, after a network is simplified into a factory stand and a power supply area, an output line of the power supply area is taken as a benchmark and considering the automatic contraction of the power supply area connecting to the output line, a research on a network section is conducted, and the characteristics of a transmission section of an electromagnetic looped network are taken consideration, on one hand, a high voltage line is searched, on the other hand, a high voltage grade network is taken as a high voltage grade section to search corresponding identification of electromagnetic loop network. The method is simple, practical and very fast.

Description

technical field [0001] The invention relates to a search method, in particular to a search method for a power transmission section considering automatic network shrinkage. Background technique [0002] The automatic search of the transmission section has been one of the research topics at home and abroad, and it is an important basis for other in-depth analysis and research. The automatic search method of the transmission section is generally based on the electrical characteristics of the transmission section and combined with the method of graph theory. The general method is as follows: [0003] (1) According to the N-1 principle widely used in power grid analysis, judge the section of the system according to the power distribution after the static N-1 of the grid, calculate the transmission capacity of the section under the static N-1 condition, and establish the constraint equation of the transmission section power , using a simplified model based on DC power flow to so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00
Inventor 侯俊贤董毅峰王毅仲悟之王虹富冯静杨学涛张志强张海顺许鹏飞
Owner STATE GRID CORP OF CHINA
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