Rapid Assessment, Visualization, and Mitigation of Cascading Failure Risk in Power Systems

2015 ◽  
Author(s):  
Pooya Rezaei ◽  
Margaret J. Eppstein ◽  
Paul D.H. Hines
Keyword(s):  
Power Systems ◽  
Rapid Assessment ◽  
Cascading Failure ◽  
Failure Risk

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

Mitigating Cascading Failure in Large-scale Power Systems based on Soft Isolation

2021 ◽  
Author(s):  
Changsheng Chen ◽  
Shiying Ma ◽  
Chao Zheng ◽  
Yunting Song
Keyword(s):  
Power Systems ◽  
Large Scale ◽  
Cascading Failure

Earthquake Experience Data Point to Benefit of Diverse Backup Power

2014 ◽  
Author(s):  
David J. Calhoun ◽  
Mark A. Gake
Keyword(s):  
Power Generation ◽  
Power Systems ◽  
Nuclear Power ◽  
Power Plants ◽  
Electrical Power ◽  
Electrical Power Systems ◽  
Common Mode ◽  
Failure Risk ◽  
Diesel Generators ◽  
The Individual

Operating nuclear power plants typically have backup electrical power supplied by diesel generators. Although backup power systems are designed with redundant trains, each capable of supplying the power requirements for safe shutdown equipment, there is a common-mode seismic failure risk inherent in these customary backup power arrangements. In an earthquake, multiple equipment trains with similar, if not identical, components located side-by-side are exposed to inertial forces that are essentially identical. In addition, because of their similar subcomponent configurations, seismic fragilities are approximately equal. In that case, the probability of multiple backup power system failures during an earthquake is likely to be dependent on, and nearly the same as, the individual seismic failure probability of each equipment train. Post-earthquake inspections at conventional multiple unit power stations over the last 40 years identified this common-mode seismic failure risk long before the tsunami-related common-mode failures of diesel generators at Fukushima Daiichi in March 2011. Experience data from post-earthquake inspections also indicate that failure probabilities of diverse sets of power generation equipment are independent and inherently less susceptible to common-mode failures. This paper demonstrates that employing diverse backup power designs will deliver quantifiable improvements in electrical system availability following an earthquake. These improvements are illustrated from available literature of post-earthquake inspection reports, along with other firsthand observations. A case study of the seismic performance of similarly configured electrical power generation systems is compared to the performance of diverse sets of electrical power systems. Seismic probabilistic risk analyses for several system configurations are presented to show the benefit of improved post-earthquake availability that results from designing new backup power systems with greater diversity.

scholarly journals Estimating Cascading Failure Risk With Random Chemistry

2015 ◽  
Vol 30 (5) ◽  
pp. 2726-2735 ◽  
Author(s):  
Pooya Rezaei ◽  
Paul D. H. Hines ◽  
Margaret J. Eppstein
Keyword(s):  
Cascading Failure ◽  
Failure Risk
Sign in / Sign up

Export Citation Format

Share Document