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Fast frequency containment reserve reacts to low inertia
The Fast Frequency Reserve (FFR) is a Nordic reserve product that will be rolled out in spring 2020.
13.9.2019
The Fast Frequency Reserve (FFR) is a Nordic reserve product that will be rolled out in spring 2020.
Finland has 1,300 megawatts of reserve power for use in the event of a disruption in electricity generation. Fingrid is responsible for ensuring the operational reliability of reserve power at all ten of its own plants and at seven leased plants. Reserve power is constantly on standby, although there are only a handful of disruptions each year, and the full power output is very rarely needed.
Finland has 1,300 megawatts of reserve power for use in the event of a disruption in electricity generation. Fingrid is responsible for ensuring the operational reliability of reserve power at all ten of its own plants and at seven leased plants. Reserve power is constantly on standby, although there are only a handful of disruptions each year, and the full power output is very rarely needed.
For the power system, summer doesn’t just mean warm and gentle breezes. We asked Operational Development Manager Jonne Jäppinen to tell us about the challenges that summer presents in terms of the electricity grid and electricity production.
Last summer’s fire at Olkiluoto substation was a practical test for Fingrid’s preparedness to act in a real situation involving the threat of an electricity shortage. The case provided experience and practice for internal coordination and contacts, and also for developing internal and external communications in serious situations.
Fingrid’s September customer event in Vantaa addressed serious disturbances and a power shortage in the electricity system.
What if the electricity was cut off for a couple of weeks because of exceptional weather conditions? What would happen to the flow of information if normal communication devices didn’t work? Where would citizens get heat and water and how would we secure fuel distribution? These threats were the starting points for the large Jäätyvä (dealing with a widespread power outage caused by freezing weather) exercise held in Kuopio in October.
Many disturbance situations in overhead lines can be rapidly cleared using relay protection and automatic reclosing.
Fingrid and Teollisuuden Voima (TVO) have begun preparations to connect Olkiluoto 3 to the main grid. The connection will require special arrangements because, once completed, Olkiluoto 3 will be considerably larger than earlier electricity production units.
“When our help was requested, we agreed and arrived at the transmission line’s disconnectors in no time. We managed to limit and earth the fault quickly,” Kenet Oy’s Operations Manager Veli-Pekka Kinnunen and Substation Engineer Risto Ekdahl recall the disturbance that occurred in January. Fingrid thanked the men for the good and well-functioning cooperation.
Fingrid Oyj
Läkkisepäntie 21
00620 Helsinki
Tel. 030 395 5267
Fingrid.fi
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Fingrid is Finland’s transmission system operator. We secure reliable electricity cost effectively for our customers and society, and shape the clean, market-oriented power system of the future.