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Power system risk assessment method taking into consideration rainfall-induced landslide geological disasters

A risk assessment and power system technology, applied in the field of power system risk assessment considering rainfall-type landslide geological hazards, can solve the problems of few researches on risk assessment methods of power transmission system

Inactive Publication Date: 2017-07-14
SICHUAN UNIV
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  • Abstract
  • Description
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Problems solved by technology

[0005] At present, there are few studies on risk assessment methods for the impact of rainfall disaster meteorologically induced geological disasters on power transmission systems

Method used

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  • Power system risk assessment method taking into consideration rainfall-induced landslide geological disasters
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  • Power system risk assessment method taking into consideration rainfall-induced landslide geological disasters

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Embodiment Construction

[0062] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0063] like figure 1 As shown, a kind of power system risk assessment method that the present invention proposes considers rainfall type landslide geological disaster, specifically comprises the following steps:

[0064] (1) Obtain the rainfall meteorological data information, geographical environment data information, landslide mass sliding related parameters and power grid data information at the location of the transmission tower;

[0065] Obtain the rainfall meteorological information of the location of the transmission tower from the National Meteorological Center or local meteorological center, obtain the geographical environment information of the location of the transmission tower from the National Geological Survey or local Geological Survey, and obtain the power grid from the State Grid Corporation or the local grid company Informat...

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Abstract

The invention discloses a power system risk assessment method taking into consideration rainfall-induced landslide geological disasters. The method comprises the following steps: estimating the cumulative rainfall capacity of a rainfall-induced landslide disaster and the deflection of transmission tower deformation caused by landslide mass according to the data information of rainfall and the geological data information around transmission towers; getting the joint probability distribution of transmission tower damage by means of curve fitting; forming a 'weather-power network-grid' integrated layer based on a gridding technology, calculating the number of effective transmission towers corresponding to transmission lines covered by rainfall, and calculating the failure probability of the transmission lines; sampling the transmission lines through a non-sequential Monte Carlo method to get the load loss state of the system; calculating the amount of system load shed under the load loss state of the system based on an optimal load shedding model of AC power flow; and finally, doing statistics of the risk indicators of the system.

Description

technical field [0001] The invention relates to a power system risk assessment method, in particular to a power system risk assessment method considering rainfall-type landslide geological disasters. Background technique [0002] As the support body of the high-voltage transmission line of the power grid, the integrity of the transmission tower is directly related to the safe and stable operation of the power grid and the reliability of power supply. With the implementation of strategies such as "West-to-East Electricity Transmission" and "Sichuan-Tibet Power Networking Project", more and more high-voltage transmission networks are built in hills, mountains, and rivers and other dangerous terrains, and rainfall disasters can easily induce geological disasters. It not only threatens the safety of people's life and property in the rainfall disaster area, but also threatens the integrity of transmission towers, which has a serious impact on the normal operation of transmission ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/0635G06Q50/06
Inventor 刘友波邓创刘俊勇
Owner SICHUAN UNIV
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