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Risk quantitative assessment method, device and equipment for cascading failure of power grid

A technique for cascading failure and quantitative assessment

Pending Publication Date: 2021-12-24
INNER MONGOLIA POWER GRP
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, the existing technology takes the amount of load shedding as the effect and combines the probability of event occurrence to quantify the blackout risk of the system
On the other hand, there are existing technologies that use the degree of line overload as the consequence to quantify the propagation risk of cascading failures

Method used

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  • Risk quantitative assessment method, device and equipment for cascading failure of power grid
  • Risk quantitative assessment method, device and equipment for cascading failure of power grid
  • Risk quantitative assessment method, device and equipment for cascading failure of power grid

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Embodiment Construction

[0039] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other implementations obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

[0040] In order to at least solve the technical problems raised in the present invention, an embodiment of the present invention provides a risk quantitative assessment method for grid cascading failures.

[0041] figure 1 For the schematic flow chart of a risk quantitative assessment method for power grid cascading failures provided by the embodiment of the present invention, please refer to figure 1 , the method provided by the embodiment of the present inve...

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Abstract

The invention relates to a power grid cascading failure risk quantitative assessment method, device and equipment, and belongs to the technical field of power system risk assessment. The device comprises a grid structure, a target power grid power supply structure and target power grid overall power flow distribution information; based on a preset model and the risk factor data, determining the occurrence probability of each risk factor and the level of consequences generated after the cascading failure occurs; according to the occurrence probability of each risk factor and the grade of consequences generated after the cascading failure occurs, the risk of the cascading failure of the target power grid is quantitatively assessed, so that the risk of the cascading failure of the power grid is assessed, early warning is performed, loss is reduced, and the problem urgently needs to be solved in the prior art.

Description

technical field [0001] The invention belongs to the technical field of power system risk assessment, and in particular relates to a risk quantitative assessment method, device and equipment for grid cascading failures. Background technique [0002] The reliable supply of electricity is of great significance to the normal operation of today's society. However, dozens of major blackouts at home and abroad have shown that once cascading failures occur, it will cause great harm to power reliability. In the cascading faults of the power system, due to the failure of one or more components (such as lines, main transformers, and busbars), faults such as power flow transfer and system instability will propagate, and multiple components will be induced to have chain faults, which will eventually lead to a large number of loads. or equipment downtime. In order to ensure a reliable power supply, comprehensively assess the risk of grid cascading failures, so as to give timely warnings...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06G06F17/18
CPCG06Q10/0635G06Q50/06G06F17/18Y02E40/70Y04S10/50
Inventor 郭琦张强郝乾鹏李洪波孟凡成刘军康宏伟张敏昊张德卿
Owner INNER MONGOLIA POWER GRP
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