Method for ranking fault risks of high-voltage power transmission lines by taking real-time weather thunderstorm information into consideration

A high-voltage transmission line, fault risk technology, applied in information technology support systems, instruments, data processing applications, etc., can solve problems such as system cascading failures, not considering the impact of initial line failures, and achieve engineering practicability and efficient retrieval. performance effect

Inactive Publication Date: 2015-03-25
SOUTH CHINA UNIV OF TECH +1
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Problems solved by technology

[0004] At present, the selection methods for the initial fault set of cascading faults are divided into random sampling method, manual designation method and screening method based on fault consequences. The off-line analysis method is mainly used to analyze i...

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  • Method for ranking fault risks of high-voltage power transmission lines by taking real-time weather thunderstorm information into consideration
  • Method for ranking fault risks of high-voltage power transmission lines by taking real-time weather thunderstorm information into consideration
  • Method for ranking fault risks of high-voltage power transmission lines by taking real-time weather thunderstorm information into consideration

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Embodiment Construction

[0020] The present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0021] Such as figure 1 , 2 , a risk ranking method for high-voltage transmission line faults considering real-time meteorological thunderstorm information, including the steps in the following order:

[0022] S1. Based on the Neo4j graph database for data integration, establish a device mapping table according to the topological structure characteristics of the power grid, integrate the lightning information system, fault information system and historical meteorological information data of the power grid, and use its traversal algorithm to obtain the lightning strike section of each line and In the non-lightning section, excavate the historical data of the grid model to obtain mathematical statistical laws;

[0023] The above-mentioned data integration based on the N...

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Abstract

The invention discloses a method for ranking fault risks of high-voltage power transmission lines by taking real-time weather thunderstorm information into consideration. The method comprises the following steps that data integration is conducted on the basis of a Neo4j graph database, an equipment mapping table is established according to topological structure features of a power grid, a power grid thunder and lightning information system, a fault information system and historical weather information data are integrated, thunderbolt sections and non-thunderbolt sections of each line can be obtained by means of a traversal algorithm, and mathematical statistical laws are obtained by mining historical data of a grid structure model; according to future numerical weather prediction, dynamic search is conducted to provide the probabilities of lightning trip, namely the fault risk degrees, of the lines of different voltage classes of the south power grid in next few days, and a to-be-selected fault set is obtained by ranking the probabilities. According to the method, quantitative analysis can be conducted on the fault risk degrees of the lines, and compared with former methods only relying on experience of operating personnel, the method has better engineering practicability during operating scheduling, planning and designing of the practical power grid.

Description

technical field [0001] The invention relates to the field of high-voltage power transmission, in particular to a method for ranking fault risks of high-voltage power transmission lines considering real-time meteorological thunderstorm information. Background technique [0002] The power network is one of the most complex artificial networks in the world at present. The operation process of the power grid has great uncertainty, and the probability of failure is also high. In recent years, there have been large-scale cascading failures caused by initial failures in power grids, which have caused huge economic losses. [0003] The cause of cascading faults in the power grid is more complicated. Simply put, the mechanism is that each component of the power grid has a certain initial load when it is in normal operation. Change the balance of the power flow and cause the load to be redistributed on other nodes, and transfer the excess load to other components. If these components...

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Application Information

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IPC IPC(8): G06Q50/06
CPCG06Q10/0635G06Q50/06Y04S10/50
Inventor 马义松武志刚周保荣
Owner SOUTH CHINA UNIV OF TECH
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