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A search method for transmission section considering automatic network shrinkage

A transmission section and automatic contraction technology, which is applied in the search field, can solve the problems of missed selection, excessive search volume of transmission section, and inability to fully reflect the actual characteristics of the section, so as to avoid searching, easy to understand, and fast

Active Publication Date: 2016-04-20
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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  • A search method for transmission section considering automatic network shrinkage
  • A search method for transmission section considering automatic network shrinkage

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Embodiment Construction

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

[0041] The present invention provides a transmission section search method considering automatic network contraction. The method includes the following steps:

[0042] Step 1: Divide the transmission section into high-voltage transmission section and electromagnetic loop network transmission section;

[0043] Step 2: Search for the transmission section of the high voltage level;

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

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

[0046] ●If there is no low-voltage connection line, it does not constitute an electromagnetic ring network;

[0047] ● The line power direction is the same, there may be power inconsistencies, but very few, and the reverse power is also very small.

[0048] For the actual power grid, the...

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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 transmission section search method considering automatic network contraction. Background technique [0002] The automatic search of transmission sections has always 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 power grid, calculate the transmission capacity of the section under the static N-1 condition, and establish the constraint equation for the power of the transmission section , A simplified model based on DC power flow is used to...

Claims

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Application Information

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Patent Type & Authority Patents(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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