Power system operations and control: Difference between revisions

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{{Short description|Power plant operation}}
 
'''Power system operations''' is a term used in [[electricity generation]] to describe the process of [[decision-making]] on the timescale from one day ('''day-ahead operation'''{{sfn|Conejo|Baringo|2017|p=9}}) to minutes{{sfn|Conejo|Baringo|2017|p=10}} prior to the [[power delivery]]. The term '''power system control''' describes actions taken in response to unplanned ''disturbances'' (e.g., changes in demand or equipment failures) in order to provide reliable electric supply of acceptable quality.<ref name="Sivanagaraju2009">{{cite book | author = S. Sivanagaraju | date = 2009 | title = Power System Operation and Control | publisher = Pearson Education India | pages = 557– | isbn = 9788131726624 | oclc = 1110238687 | url = https://books.google.com/books?id=9GkhHYorvDAC&pg=PA557}}</ref> The corresponding [[engineering branch]] is called '''Power System Operations and Control'''. Electricity is hard to store, so at any moment the supply (generation) shall be balanced with demand ("[[grid balancing]]"). In an electrical grid the task of real-time balancing is performed by a regional-based control center, run by an electric utility in the traditional ([[vertical integration#Electric utilities|vertically integrated]]) electricity market. In the restructured [[North American power transmission grid]], these centers belong to ''[[balancing authority|balancing authorities]]'' numbered 74 in 2016,<ref>{{cite web |title=U.S. electric system is made up of interconnections and balancing authorities |url=https://www.eia.gov/todayinenergy/detail.php?id=27152 |website=eia.gov |publisher=[[United States Energy Information Administration]] |access-date=31 May 2022 |date=20 July 2016}}</ref> the entities responsible for operations are also called [[independent system operator]]s, [[transmission system operatorsoperator]]s. The other form of balancing resources of multiple power plants is a [[power pool]].{{sfn|Bhattacharya|Bollen|Daalder|2012|pp=54}} The balancing authorities are overseen by [[reliability coordinator]]s.{{sfn|NERC|2018|p=8}}
 
== Day-ahead operation ==