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Power grid fault modeling method under extreme disaster condition

A power grid fault and modeling method technology, applied in the field of power system, can solve the problem that the value of risk cannot be ignored

Active Publication Date: 2020-05-29
STATE GRID CORP OF CHINA +1
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Problems solved by technology

[0003]All kinds of extreme external environments pose serious challenges to power safety; although the probability of such disasters is small, the losses after occurrence may be extremely huge, so its The risk value still cannot be ignored; analyzing the causes of power system equipment failures under extreme natural disaster conditions and establishing a power grid failure model are extremely important for making preventive disaster prevention dispatching operation decisions for the power grid and further enhancing the pre-control and driving capabilities of safe production. Significance; Judging from the existing achievements, the power grid fault model considering factors such as aging and weather has achieved fruitful results, but the power grid fault model that comprehensively considers the randomness of severe weather, the common cause of component failures, and the interdependence of system operation still needs to be further studied Research

Method used

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  • Power grid fault modeling method under extreme disaster condition
  • Power grid fault modeling method under extreme disaster condition
  • Power grid fault modeling method under extreme disaster condition

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Embodiment Construction

[0046] The present invention can be explained in detail through the following examples, and the purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention, and the present invention is not limited to the following examples.

[0047] Such as figure 1 As shown, a power grid fault modeling method under extreme disaster conditions, including the following steps:

[0048] S1. Analyze the factors that cause common cause failures and cascading failures in the power grid under extreme disaster conditions.

[0049] Common cause failure refers to multiple equipment outage events caused by the same influencing factor in the power system, such as severe weather. These outage events may occur simultaneously or successively; according to the characteristics of natural disasters in my country, the , lightning, earthquake, fire, rainstorm, ice these six factors.

[0050] Cascading failures describe the mutual failure process a...

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Abstract

The invention discloses a power grid fault modeling method under an extreme disaster condition. Based on a proportion risk model, the current external disaster environment, the adjacent element stateinfluence and other factors are considered; modeling analysis is carried out on the forced outage process of the power grid; a power grid fault model is constructed, random sampling of a fault sampleis completed, a dynamic disaster anticipated accident set is established according to a system operation state, disaster characteristics and a power grid equipment health state evaluation result, anda basis is provided for a power grid company to evaluate power supply safety and formulate a scheduling strategy according to actual disaster conditions.

Description

technical field [0001] The invention relates to the technical field of power systems, in particular to a fault modeling method for power grids under extreme disaster conditions. Background technique [0002] From a global perspective, extreme external disaster events have caused catastrophic damage to the safe and reliable operation of the power grid. [0003] All kinds of extreme external environments pose serious challenges to power security; although the probability of such disasters is small, the losses after the occurrence may be extremely large, so the risk value cannot be ignored; analysis of power system equipment under extreme natural disaster conditions The cause of failure and the establishment of a power grid failure model are of great significance for making preventive disaster prevention dispatching and operation decisions for the power grid and further enhancing the pre-control and driving capabilities of safe production; from the existing results, considering...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06G06F17/18
CPCG06Q10/0635G06Q50/06G06F17/18
Inventor 南钰郑罡宋瑞卿张皓月郝靖赵鑫
Owner STATE GRID CORP OF CHINA
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