Risk assessment of cascading failure in power grid based on brittleness theory of complex system and entropy theory under geomagnetic storm conditions

2019 ◽  
Author(s):  
Xiaoning Kang ◽  
Yagang Zhang ◽  
Xinyue Zhang ◽  
Yini Xu ◽  
Xiaoyu Li ◽  
...  
Keyword(s):  
Complex System ◽  
Risk Assessment ◽  
Geomagnetic Storm ◽  
Power Grid ◽  
Cascading Failure ◽  
Entropy Theory ◽  
Grid Based

Cascading Failure Risk Assessment in Power Grid Based On the Line Outage Rate

2021 ◽  
Author(s):  
Xu Pei-Dong ◽  
Xu Gang ◽  
Yu Bing-qi ◽  
Feng Jing ◽  
Shi Chun-Min ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Power Grid ◽  
Cascading Failure ◽  
Failure Risk ◽  
Grid Based

scholarly journals Research on risk assessment method of distribution network based on information physical fusion

2021 ◽  
Vol 248 ◽  
pp. 02055
Author(s):  
Wei Wei Xu ◽  
Feng Chen ◽  
Bao Zhang ◽  
Jun Hao Huang ◽  
Tao Yang
Keyword(s):  
Risk Assessment ◽  
Power Grid ◽  
Distribution Network ◽  
Assessment Method ◽  
Safe Operation ◽  
Information Level ◽  
Risk Assessment Method ◽  
Failure Scenario ◽  
Coupling Characteristics ◽  
Grid Based

With the improvement of information level, the information attack will cross the boundary of power grid information space and cause the disturbance of power grid physical system, which will form a cross-space chain fault and affect the safe operation of power grid. Based on this, this paper proposes a distribution network node risk assessment method based on information physical fusion. Firstly, the overall structure of the distribution network and the information physical coupling characteristics of the information physical fusion are studied. Then, the cross-space chain failure scenario of distribution network with information physical fusion is analyzed. Based on this, the risk assessment method is proposed. Finally, the effectiveness of the method is verified by a numerical example.

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