Power grid infrastructure vulnerability evaluation method

A technology of infrastructure and evaluation methods, applied in the direction of instruments, data processing applications, calculations, etc.

Active Publication Date: 2015-06-24
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Aiming at the deficiency of the complexity of the important infrastructure of the power grid itself and the external influencing factors, the purpose of the present invention is to provide a method for evaluating th

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0055] Example 1: Vulnerability assessment of substations:

[0056] (1 Overview:

[0057] A substation is located in the southwest of a certain city, northeast of Songjiang District, with geographical coordinates: 121.1 degrees east longitude, 31.08 degrees north latitude. The climate of this area belongs to the northern subtropical marine monsoon climate, with four distinct seasons throughout the year, the average temperature is 15.7 degrees Celsius, the annual rainfall is 1123 mm, and the annual thunder and lightning days are 30.1 days. There are no major disasters recorded in history, such as earthquakes, strong typhoons, floods, etc. occurrence of natural disasters. The substation covers an area of ​​91,635 square meters, and the building area is 3,831 square meters. The substation consists of three voltage levels of 500 / 220 / 35 kV, and the design prospect of the main transformer is to install 4 groups of 500 kV main transformers. The 500 kV long-term plan is a double-se...

Embodiment 2

[0065] Example 2: Vulnerability assessment of transmission lines

[0066] (1 Overview:

[0067] A transmission line starts from Yanghang Substation in a certain city and ends at Waigaoqiao Power Plant in the city, with a total length of 20,740m. The whole line is erected with double circuits.

[0068] Since the line project is located in the suburbs of a certain city, it is inevitable that there are many intersections across the whole line. In addition to a large number of residential houses and factory buildings crossing across, it also crosses highways, waterways, railways, power lines, communication lines, outer ring forest belts, urban roads and other facilities many times. Hydrological and geological conditions: the tortuous coefficient is 1.5. Terrain: 70% flat land, 10% river network, 20% swamp. Geological conditions: average. Traffic conditions: good. The area passed by the line belongs to the edge of the dish-shaped land in the Taihu Lake Basin. The water system ...

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Abstract

The invention relates to a power grid infrastructure vulnerability evaluation method. The method comprises the first step of establishing a power grid infrastructure evaluation index system, the second step of acquiring and processing index data in the evaluation index system, the third step of determining a pressure index value VP, a state index value VS and a response index value VR in power grid infrastructure vulnerabilities, the fourth step of establishing a basic model of a triangular chart according to the pressure index value VP, the state index value VS and the response index value VR, and the fifth step of establishing a triangular classification chart used for evaluating classification of the power grid infrastructure vulnerabilities and the vulnerability trend. The method plays an important guiding role in making important power grid infrastructure protective measures; the evaluation method can provide effective technological means for safety management, hidden danger checking, safety evaluation and the like of various important power grid facilities of an electric power company system and can prevent various accidents caused by the important power grid infrastructure vulnerabilities and reduce economic losses caused by the accidents.

Description

technical field [0001] The invention relates to a technology for assessing the vulnerability of important infrastructure of a power grid, in particular to a method for evaluating the vulnerability of the infrastructure of a power grid. Background technique [0002] With the development of the economy, the power system has entered the era of large power grids, large units and high voltage, and the coverage area of ​​important infrastructure of the power grid has increased accordingly. In recent years, intentional or unintentional man-made damage has been increasing and major natural disasters have occurred frequently, making these risk factors act on the vulnerable links of the power system, causing equipment accidents and causing large-scale power outages from time to time. It is very easy to cause significant social impact and economic loss. For a long time, power system security evaluation has been mainly aimed at the modeling and fault analysis and calculation of the pow...

Claims

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Application Information

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IPC IPC(8): G06Q50/06
CPCG06Q50/06
Inventor 门永生朱朝阳于振吴睦远何真珍刘超郭健郭雨松渠晓峰
Owner STATE GRID CORP OF CHINA
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