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Blackout

About: Blackout is a research topic. Over the lifetime, 2088 publications have been published within this topic receiving 30433 citations.


Papers
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Patent
23 May 2003
TL;DR: In this article, an instantaneous blackout detecting circuit is used to detect an abrupt drop of a power source voltage due to abrupt failure of a cooling device body for a laser oscillator.
Abstract: PROBLEM TO BE SOLVED: To assure safety and reliability of cooling device body for a laser oscillator, and to protect the laser medium of the laser oscillator. SOLUTION: A control part 16 which controls refrigeration cycle and cooling cycle comprises a calculation device 17 which at least controls a compressor 3 and a heater 14, and an instantaneous blackout detecting circuit 26 which is electrically connected to the calculation device 17 and detects instantaneous blackout due to abrupt drop of a power source voltage. If the instantaneous blackout detecting circuit 26 detects an instantaneous blackout equal to or longer than the semi-cycle of power source frequency during operation of the compressor, a temperature control for a laser oscillator 12 using refrigeration cycle and cooling cycle is interrupted.

8 citations

Proceedings ArticleDOI
27 Mar 2014
TL;DR: A BEMS which can autonomously control the power consumption below a given threshold while negotiating electricity consumption with the smart grid system can prevent the blackout and customers satisfaction can be increased.
Abstract: Building energy management system (BEMS) has drawn public attention since it is not only help users to monitor and control their power consumption easily, but also reduce their electricity bill. Various scheduling models have been proposed to optimize power consumption. However, they are few solutions to prevent the blackout while optimizing power consumption. We design and implement a BEMS which can autonomously control the power consumption below a given threshold while negotiating electricity consumption with the smart grid system. By keeping the power consumption below a given threshold autonomously, the power demand will not excess the available supply, therefore can prevent the blackout. Since the threshold can be negotiated with the smart grid system, customers satisfaction can be increased.

8 citations

Journal Article
TL;DR: The occurrence and propagation of blackout in Brazilian power grid on Nov. 11, 2009 are retrospected in this paper, where the authors pointed out that at the first stage the accident was caused by extreme weather, and then it extended to a serious multiple-failure and finally became blackout; the major causes expending the accident to blackout were the defects of protective relayings, security and stability control, insufficient measures in "the third defense line" and voltage collapse at receiving system.
Abstract: The occurrence and propagation of blackout in Brazilian power grid on Nov. 11, 2009 are retrospected. It is pointed out that at the first stage the accident was caused by extreme-weather, and then it extended to a serious multiple-failure and finally became blackout; the major causes expending the accident to blackout were the defects of protective relayings, security and stability control, the insufficient measures in "the third defense line" and the voltage collapse at receiving system. There are a lot of similarities in operational characteristics between Brazilian power grid and China Southern power grid, so considering actual condition of China Southern power grid the lessons from the blackout occurred in Brazilian power network are summarized.

8 citations

Journal ArticleDOI

8 citations

Proceedings ArticleDOI
05 Dec 2005
TL;DR: The public's response to power blackouts provides a valuable insight into their concerns about the industry and provides an invaluable demonstration of society's dependency on bulk electricity supplies as discussed by the authors, however, after the London blackout and one in Birmingham a week later, the events were no longer foremost in peoples' minds.
Abstract: The public's response to power blackouts provides a valuable insight into their concerns about the industry and provides an invaluable demonstration of society's dependency on bulk electricity supplies. The London blackout and one in Birmingham a week later were both caused by technical problems, also they sparked wide-ranging debates about the future and state of the power supply industry. The immediate concern was the possibility of a terrorist attack, a suggestion which was quickly discounted. Then there were questions about lack of investment which again were answered. Later questions were raised about the viability of the industry and the prospect of further blackouts. Political decisions were questioned and both past and present governments were criticized. A survey conducted 18 months after the blackout revealed that the events were no longer foremost in peoples' minds. Most of those questioned however held the supply companies responsible, but that some responsibility lay with politicians

8 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023178
2022355
202191
2020120
2019121
2018132