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Line fault probability calculation method and system under lightning disasters

A probability calculation and line failure technology, applied in calculation, complex mathematical operations, instruments, etc., can solve problems such as adjusting the lightning strike failure rate and affecting lightning strike defense measures, and achieve the effect of online dynamic adjustment

Pending Publication Date: 2020-02-28
YUNNAN POWER GRID +1
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Problems solved by technology

The existing lightning strike trip probability is an average value obtained from historical data statistics, which fails to adaptively adjust the lightning strike failure rate according to the actual evolution of thunderstorms, which affects subsequent lightning strike defense measures

Method used

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  • Line fault probability calculation method and system under lightning disasters
  • Line fault probability calculation method and system under lightning disasters
  • Line fault probability calculation method and system under lightning disasters

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0032] Such as figure 1 As shown, a method for calculating the probability of line failure under lightning disasters includes the following steps:

[0033] Step 1: Carry out geographic grid division for the area where the line is located.

[0034] According to the size of the area where the line is located and the requirements for algorithm accuracy and speed, the area is divided into square grids with the same area according to the geographical latitude and longitude. The commonly used grid sizes are: 1km*1km, 3km*3km, 9km*9km, etc. . The denser the grid, the higher the accuracy of the algorithm and the slower the speed. Therefore, the grid should be divided according to the actual situation...

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Abstract

The invention discloses a line fault probability calculation method under lightning disasters. The line fault probability calculation method comprises the steps of performing geographical grid division on an area where a line is located; calculating grid lightning density according to the lightning prediction information; and calculating the line lightning stroke fault probability according to thegrid lightning density. The invention further discloses a corresponding system. According to the method, the grid lightning density is calculated according to the real-time lightning prediction information, the line lightning fault probability is calculated according to the grid lightning density, online dynamic adjustment of the lightning fault probability is achieved, and the method and systemare adaptive to the evolution process of lightning disasters.

Description

technical field [0001] The invention relates to a method and system for calculating the probability of line failure under lightning disasters, belonging to the technical field of power grid security and stability analysis and disaster prevention and mitigation. Background technique [0002] External disasters have always been the main cause of grid failures. In recent years, power outages caused by external disasters have occurred from time to time. Among them, lightning strikes are the main cause of line flashovers, and lightning tripping has always been the first of all types of faults. Therefore, online assessment of the spatio-temporal distribution of lightning trip risk and correct early warning are extremely important for blackout defense. The existing lightning strike trip probability is an average value obtained from historical data statistics, which fails to adaptively adjust the lightning strike failure rate according to the actual evolution of thunderstorms, whic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/18G06Q10/06G06Q50/06
CPCG06F17/18G06Q10/0635G06Q50/06
Inventor 郁琛常康徐泰山吴琛刘旭斐段荣华赵明黄燕
Owner YUNNAN POWER GRID
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