Method for evaluating importance of power system element based on restoring force

A power system and resilience technology, which is applied in the field of power system component importance evaluation, and can solve problems such as no component importance evaluation.

Inactive Publication Date: 2019-11-19
XI AN JIAOTONG UNIV +1
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[0004] However, there is no relevant research on

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  • Method for evaluating importance of power system element based on restoring force
  • Method for evaluating importance of power system element based on restoring force
  • Method for evaluating importance of power system element based on restoring force

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Embodiment Construction

[0083] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0084] see image 3 , the method for assessing the importance of power system components based on resilience in the present invention, by giving the category and nature of the assessment disaster, studying the impact of extreme disasters on the failure rate of components and calculating the failure probability of components, using non-sequential Monte Carlo simulation Obtain the state change process of the component. Through multiple simulations and solving the MILP problem formed by the optimal restoration model, the distribution function of the restoration time of the components is obtained, and finally the importance of the components is sorted by the Copeland sorting method. Specifically include the following steps:

[0085] 1. Determine the type and nature of power system disasters

[0086] The nature of different disasters is very different, ...

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Abstract

The invention discloses a method for evaluating the importance of a power system element based on restoring force. The method comprises the following steps: 1) determining the type and occurrence property of a disaster; 2) obtaining vulnerable element types and related fault probabilities under disasters; 3) acquiring fault configuration conditions of elements in the system after disasters occur by utilizing non-sequential Monte Carlo simulation; 4) establishing a post-disaster optimal recovery strategy model, and proposing an objective function and constraint conditions; and 5) simulating thepost-disaster recovery process for multiple times to obtain the repair time of each element, and performing sorting by using a Koplan sorting method to obtain the importance sorting of the elements.By utilizing the method, the element importance of the power system under various natural disasters and man-made disasters can be solved, and the disaster type and characteristics are considered in the solving process. The element importance result obtained by the method can provide reference for making a post-disaster recovery strategy and determining a pre-disaster element reinforcement scheme.

Description

technical field [0001] The invention belongs to the field of power system safety planning and operation, and in particular relates to an evaluation method for the importance of power system components based on resilience. Background technique [0002] Maintaining high power supply reliability is one of people's requirements for modern power systems. In recent years, climate change has intensified, and the frequency of extreme natural disasters has continued to increase, which has seriously interfered with the normal operation of the power system and caused frequent blackouts. Power system resilience can be understood as the ability of the power system to accurately predict possible disaster disturbances, take various effective measures to reduce system equipment and load losses before and during the disaster, and quickly return to the normal state before the failure after the disaster is over. , the increasingly frequent natural disasters, network attacks and man-made attac...

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Application Information

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IPC IPC(8): G06F17/50
Inventor 别朝红黄格超卞艺衡李更丰林雁翎马慧远
Owner XI AN JIAOTONG UNIV
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