Risk analysis method and system of power network group failure under mountain fire disaster

A mass fault and risk analysis technology, applied in data processing applications, instruments, calculations, etc., can solve problems such as the degree of grid risk that cannot be analyzed for transmission lines, and achieve the effect of reducing grid security risks and quickly and accurately calculating

Active Publication Date: 2019-01-01
STATE GRID HUNAN ELECTRIC POWER +2
View PDF5 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a method for risk analysis of power grid group failures under mountain fire disasters, which is used to solve the technical problem that the existing methods cannot analyze the risk degree of the power grid of transmission lines

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Risk analysis method and system of power network group failure under mountain fire disaster
  • Risk analysis method and system of power network group failure under mountain fire disaster
  • Risk analysis method and system of power network group failure under mountain fire disaster

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] see figure 1 , figure 2 , a method for risk analysis of power grid mass failures under a mountain fire disaster in this embodiment, comprising the following steps:

[0045] S1: Obtain the predicted value of wildfire density in all regions, and calculate the set of transmission lines affected by wildfire disaster according to the predicted value of wildfire density. The wildfire density value is obtained from the power grid wildfire density prediction system of the State Key Laboratory of Power Transmission and Transformation Equipment Disaster Prevention and Reduction. Not limited to this method.

[0046] S2: According to the historical mountain fire trip data of each transmission line, statistically analyze the posterior probability distribution of the mountain fire trip of each transmission line under the mountain fire disaster.

[0047] S3: According to the posterior probability distribution, respectively calculate the risk index of the grid group failure of each...

Embodiment 2

[0058] A method for risk analysis of power grid mass failures under a mountain fire disaster in this embodiment includes the following steps:

[0059] Obtain the distribution results of wildfire density in the power grid, such as image 3 As shown in the figure, it can be seen that the areas where wildfires may occur are mainly located in Chenzhou, Yongzhou, Hengyang, Zhuzhou, Xiangtan, Loudi, Yueyang, Shaoyang and other regions. At the same time, the collection of transmission lines affected by wildfire disasters is calculated.

[0060] According to the historical mountain fire trip data of each transmission line, the posterior probability distribution of each transmission line mountain fire trip under the mountain fire disaster is statistically analyzed, as shown in Figure 4 As shown, it can be seen from the figure that the range of the trip probability of the transmission line mountain fire under this condition is 0.06-0.7, and the most likely value is 0.19.

[0061] For ...

Embodiment 3

[0066] An embodiment of the present invention also provides a computer system, including a memory, a processor, and a computer program stored in the memory and operable on the processor. When the processor executes the computer program, the steps of the foregoing embodiments are implemented.

[0067] To sum up, the present invention quickly screens the group fault combination of the power grid under the mountain fire disaster, quantitatively analyzes the risk of the power grid, realizes the fast and accurate budgeting of the group fault risk of the power grid in a large-scale mountain fire disaster, and scientifically guides the power grid to efficiently respond to the high risk of the power grid mountain fire disaster. It can greatly reduce the safety risk of the power grid caused by wildfires on large-scale transmission lines.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method and a system for risk analysis of power network group failure under mountain fire disaster. The method comprises the following steps: acquiring a transmission line setaffected by mountain fire disaster; obtaining the posterior probability distribution of hill fire tripping of each transmission line under hill fire disaster; according to the posterior probability distribution, the risk indices of group faults of each transmission line in the transmission line set are calculated respectively. The grid region is divided into several grids, and the risk indices ofall transmission lines in each grid are summed up and multiplied with the prediction value of hill fire density, and then the risk distribution of group faults under hill fire disaster is calculated.The invention can quantitatively analyze the risk of the power network, and realize the rapid and accurate budget of the group failure risk of the large-scale mountain fire disaster power network.

Description

technical field [0001] The invention relates to the field of power grid protection, in particular to a risk analysis method and system for group failures of power grids under mountain fire disasters. Background technique [0002] In recent years, China's wildfire disasters have occurred frequently, with an average of more than 70,000 cases per year. During the high incidence of wildfires, multiple UHV and important cross-district lines had simultaneous wildfire trip accidents, posing a serious threat to the safe operation of large power grids. In order to efficiently respond to wildfire disasters, it is necessary to analyze the risk distribution of power grids under wildfire disasters in advance and prepare for them in advance. [0003] There are mainly two problems in the existing methods: (1) Due to the wide range of mountain fires and the large number of mountain fire disaster group fault combinations, it is extremely difficult to perform risk analysis efficiently and qu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/0635G06Q50/06
Inventor 陆佳政郭俊简洲徐勋建方针李波
Owner STATE GRID HUNAN ELECTRIC POWER
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap