Method for evaluating resilience of electric power system under disaster

A technology for power system restoration and disasters, which is applied in the direction of electrical components, circuit devices, AC network circuits, etc., and can solve problems such as one-sided evaluation methods, information support, and limitations

Active Publication Date: 2018-09-07
XI AN JIAOTONG UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Existing evaluation methods are relatively one-sided and limited, and it is difficult to provide sufficient information support for power system dispatchers and deci

Method used

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  • Method for evaluating resilience of electric power system under disaster
  • Method for evaluating resilience of electric power system under disaster
  • Method for evaluating resilience of electric power system under disaster

Examples

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Embodiment Construction

[0086] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0087] see figure 1 , the method for evaluating the resilience of the power system under the disaster described in the present invention is to find out the vulnerable components and their fault characteristics of the power system under the disaster by given the category and nature of the disaster, and use the Monte Carlo simulation to obtain the state change process of the components , use the power flow calculation to analyze the system state and use the DC power flow model to calculate the minimum load shedding optimal power flow under emergency conditions, and finally obtain the resilience evaluation index to judge the system's robustness and resistance to disasters.

[0088] 1. Determine the type and nature of the disaster

[0089] The nature of different disasters is very different, the process of damage to the power system, the degree of damage...

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Abstract

The invention discloses a method for evaluating resilience of an electric power system under a disaster, comprising the following steps: 1) determining a type of the disaster and occurrence property;2) obtaining types of easily damaged elements under the disaster and related fault probabilities; 3) acquiring a running state of easily damaged equipment in a disaster environment by utilizing Monte-Carlo simulation; 4) carrying out system minimum load shedding calculation based on direct current optimal power flow; and 5) carrying out index calculation and system resistivity analysis. An expected running state and strong degree of the electric power system under various natural disasters and a man-made disaster can be rapidly calculated by utilizing the method disclosed by the invention, a calculating process gives consideration to types and characteristics of the disasters at the same time, and resilience enhancement limiting factors of the system under the disaster can be analyzed, sothat the method disclosed by the invention can be used for providing a reference and a suggestion for disaster prevention planning and construction of the electric power system.

Description

technical field [0001] The invention belongs to the field of power system safety planning and operation, and in particular relates to a method for evaluating power system resilience under disasters. 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 resilient power system can learn lessons from the disturbances it has suffered, and can prevent or...

Claims

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Application Information

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IPC IPC(8): H02J3/00
CPCH02J3/00H02J3/001H02J2203/20
Inventor 别朝红张寒卞艺衡李更丰林雁翎马慧远
Owner XI AN JIAOTONG UNIV
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