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Risk assessment method for extreme event of power system

A power system and risk assessment technology, applied to electrical components, circuit devices, AC network circuits, etc., can solve problems such as inability to truly respond to extreme events

Inactive Publication Date: 2020-08-07
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to address the shortcomings of the above-mentioned background technology, provide a risk assessment method for extreme events in power systems, realize the risk assessment of extreme events with low probability, and solve the problem that conventional risk assessment methods cannot truly reflect extreme events to system operation Technical issues that pose a huge risk

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  • Risk assessment method for extreme event of power system
  • Risk assessment method for extreme event of power system
  • Risk assessment method for extreme event of power system

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Embodiment Construction

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Modifications and improvements made by those skilled in the art based on the embodiments of the present invention all fall within the protection scope of the present invention.

[0021] A risk assessment method for power system extreme events disclosed in the present invention is as follows: figure 1 As shown, steps S101 to S105 are included.

[0022] Step S101: Obtain the equipment failure probability model of the power system under extreme events based on historical data or simulation data

[0023] Extreme events include but are not limited to extreme weather and cyber attacks. For extreme weather events such as typhoons, heavy rains, and mudslides that have historical data for learnin...

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Abstract

The invention discloses a risk assessment method for extreme events of a power system, and belongs to the technical field of calculation, reckoning and counting. The method comprises the steps of obtaining an equipment fault probability model of a power system under an extreme event based on historical data or simulation data; randomly generating a system state by adopting a Monte Carlo method based on the fault probability model; selecting an appropriate consequence evaluation method to determine the loss of the system in the corresponding system state; analyzing an extreme value risk distribution situation based on an extreme value theory; and evaluating the influence of the extreme risk on the power system based on a risk value calculation method. According to the method, the influenceof the extreme event on the power system can be evaluated in advance, and a conventional risk evaluation method is supplemented.

Description

technical field [0001] The invention relates to a power system risk assessment technology, in particular to a risk assessment method for extreme events in a power system, and belongs to the technical field of calculation, calculation or counting. Background technique [0002] With the construction of large-scale interconnected power grids, power network security and reliability issues are more integrated and systematic, and small disturbances with low probability may cause large-scale cascading failures of the system. Reducing the risk of the power system is the prerequisite for ensuring the safe and stable operation of the system. Emergency events such as network attacks, natural disasters, and equipment failures will increase the risk of system operation. In order to reasonably avoid the losses caused by these uncertain factors to the power grid, it is necessary to strengthen the research on risk management of power systems. [0003] Power system risks can be classified i...

Claims

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Application Information

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IPC IPC(8): G06Q10/04G06Q10/06G06Q50/06G06F17/18H02J3/00
CPCG06F17/18G06Q10/04G06Q10/0635G06Q50/06H02J3/003
Inventor 王琦蔡星浦孙维佳汤奕
Owner SOUTHEAST UNIV
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