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Method of aggregating multi-send extra-high voltage alternating current and direct current hybrid grid system stability indexes

An AC-DC hybrid and UHVDC technology, applied in information technology support systems, instruments, data processing applications, etc., can solve problems such as few studies on the stability of AC-DC hybrid grid systems

Inactive Publication Date: 2017-02-22
国网内蒙古东部电力有限公司经济技术研究院 +2
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

There are few studies on the stability of the AC-DC hybrid grid system at the sending end

Method used

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  • Method of aggregating multi-send extra-high voltage alternating current and direct current hybrid grid system stability indexes
  • Method of aggregating multi-send extra-high voltage alternating current and direct current hybrid grid system stability indexes
  • Method of aggregating multi-send extra-high voltage alternating current and direct current hybrid grid system stability indexes

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Embodiment Construction

[0041] The present invention proposes a method for sending multiple comprehensive indicators of the stability of the UHV AC-DC hybrid grid system, which includes the following steps:

[0042] 1) Select n items of stability indicators for UHV AC-DC hybrid grid system for analysis;

[0043] 2) Construct a stability index analysis system for multi-output UHV AC-DC hybrid grid system;

[0044] 3) Appropriately arrange weights for each indicator;

[0045] 4) According to the index weight aggregation, the multi-send UHV AC-DC hybrid power grid system stability comprehensive index.

[0046] The present invention will be further described below in conjunction with the accompanying drawings.

[0047] Such as figure 2 As shown, the present invention is a comprehensive index of stability applicable to multi-sending UHV AC-DC hybrid power grid system, comprising the following steps:

[0048] 1) Select n indicators for the stability analysis of the UHV AC-DC hybrid grid system, mainly...

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Abstract

The invention discloses a method of aggregating multi-send extra-high voltage alternating current and direct current hybrid grid system stability indexes, and belongs to the technical field of electrical power system reliability. The method comprises the following steps of 1, selecting n indexes of extra-high voltage alternating current and direct current hybrid grid system stability analysis; 2, building a multi-send extra-high voltage alternating current and direct current hybrid grid system stability analysis index system; 3, properly arranging weights according to each index; 4, aggregating the multi-send extra-high voltage alternating current and direct current hybrid grid system stability comprehensive indexes according to the index weights. The method provides a comprehensive and effective quantification index for the stability of an extra-high voltage alternating current and direct current hybrid grid system containing multiple outside sending direct currents. Combined with the characteristics of a multi-send extra-high voltage alternating current and direct current system, a comprehensive analysis is conducted to the stability of the extra-high voltage alternating current and direct current hybrid grid system containing multiple outside sending direct currents, the loophole that analysis to a sending end power grid is less is filled, and the method provides comments and suggestions for future planning and building of the sending end power grid.

Description

technical field [0001] The invention relates to the technical field of electric power system reliability, in particular to a method for sending multiple comprehensive indicators of the stability of the UHV AC / DC hybrid grid system. Background technique [0002] my country's primary energy and load are characterized by a reverse distribution. In order to meet the rational delivery of clean energy and the reliable supply of load centers, the State Grid has vigorously developed UHV AC and DC technologies suitable for long-distance and large-capacity transmission. And with the continuous progress of power grid construction and the continuous expansion of power supply scale, it is inevitable to have multiple external DC lines for power transmission in the same area. DC transmission is not restricted by the stability problem of synchronous operation, and plays a great role in ensuring the stable operation of the AC system at both ends. However, based on the characteristics of DC ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/0637G06Q50/06Y04S10/50
Inventor 徐明忻赵龙曹阳刘阳龙日尚蒙园张建华孙碣谢岩
Owner 国网内蒙古东部电力有限公司经济技术研究院
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