This paper focuses on the impact of extreme weather on power system outages. Extreme weather condition impacts of interest are listed, including both direct and consequential events. Their impact on power system outages are discussed, concerning both blackouts and component failure. Prospects for estimating weather condition impacts on the frequency of blackouts and on equipment and system fail...

On September 8, 2011, the Great San Diego/Southwest Blackout occurred affecting approximately 5 million people. This paper explores the availability and use of social media as a crisis response tool following such a crisis event. Contrary to expectations, Internet and the cell phone system had less than the expected availability and as a result, users had a difficult time using social media to ...

This study investigates the stock price reaction of electric energy utility firms to 2003 blackout in Northeast USA and if market was able identify responsible firm. Therefore, we employ event methodology select a sample US-based firms. Although it took commission almost eight months name firm for blackout, investors punished FirstEnergy only two trading days after - were right, as later turned...

Large-scale communications blackouts, such as those carried out by Egypt and Libya in 2011 and Syria in 2012 and 2013, have motivated a series of projects that aim to enable citizens to communicate even in the face of such heavy-handed censorship efforts. A common theme across these proposals has been the use of wireless mesh networks. We argue that such networks are poorly equipped to serve as...

During the atmospheric entry phase at hypersonic speed, radio communication from/to a space vehicle can be disrupted due to formation of plasma sheath within surrounding flow field. In order characterize such blackout phases, this work presents numerical methodology combining Computational Fluid Dynamic (CFD) simulations ionized chemically reacting flows by means Object-Oriented Libraries for D...

A model has been developed to study the global complex dynamics of a series of blackouts in power transmission systems [1, 2]. This model has included a simple level of self-organization by incorporating the growth of power demand and the engineering response to system failures. Two types of blackouts have been identified with different dynamical properties. One type of blackout involves loss o...

Fifty percent of college students who drink report alcohol-induced blackouts, and alcohol abusers in general put a heavy burden on the medical care system. Using data drawn from a randomized, controlled alcohol intervention trial at five university sites, our study quantified the costs of visits to emergency departments by college students who experienced blackouts from drinking alcohol. Of 954...

The blackout risk in power systems is difficult to estimate by actual probabilistic methods because they usually neglect, or do not properly consider, the dependencies between failures and the dynamic evolution of the grid in the course of a transient. Our purpose is therefore to develop an integrated probabilistic approach to blackout analysis, capable of handling the coupling between events i...