denmark: a european smart grid hub - Copenhagen Cleantech Cluster

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Copenhagen Cleantech ClusterAppendices36COMPANYCASESInopower: Integration of large scale Wind Power into Smart Grid systemsDanish company Inopower has developed a smart grid controlsystem that solves specific Danish challenges and has thepotential to assist in the management of smart grids all overthe world. The system links large wind power infeeds with theDanish district heating system via a centralized database andthe remote control of production/consumption assets.Since 2006, the Danish-based technologycompany Inopower has been operating asmart grid control system for the integrationof large infeeds of wind power in production.The fact that the wind power infeed is adriving factor behind the power price makes aflexible remote-controlled smart grid systemlike the Inopower system valuable, as it enablesexisting assets to be made available tothe power system and gives the owner accessto new sources of potential income.The Danish wind challengeInopower started developing the controlsystem in response to a specific problem: Theintegration of large amounts of wind energyinto the Danish power grid necessitated anew design of the electricity market so as toenable all decentralized combined heatingand power plants to respond to the amountof wind-generated electricity on the grid. Theproduction of energy by wind turbines in Denmarkfluctuates from approx. 100% of thecountry’s electricity consumption on somedays to them being completely shut downon others. Troels Davidsen, CEO of Inopower,explains: “We wanted to create a solutionthat could be controlled on grids with largeamounts of wind energy or highly decentralizedenergy production, as this calls for highflexibility and the ability to integrate into differentmarkets.”Storage potentialAt present the Inopower control system ishandling 250 MW major consumers and 750MW production units on a daily basis, and theremote-controlled units in the system are CHPplants with controllable production/consumptionand thermal storage capability. But thesystem will also be able to handle power storageunits like batteries once battery technologyachieves commercialization.Keeping a balance on the gridFurthermore, the system is connected to thewind power plants themselves, enabling thewind turbines to respond to situations wheredirect load control of the wind power productionof the turbines is necessary to be ableto keep a balance on the grid. By using theInopower control system, the power systembenefits in terms of being able to utilize itsexisting capacity for grid balancing, and theowners of the assets are able to use their assetsto participate in balancing the power gridand thereby achieve a higher profit on theirinvestments.Intelligent response of assets on powergrids with large wind power infeedThe Inopower system links assets to the powermarket in a way that enables the assets torespond to the actual operation status on thepower grid, as they are traded everyday onthe Nord Pool power market. In this way, thepower grid can use a mixture of assets withdifferent capabilities in the most beneficialway from both a technical and financial pointof view. Fast-reacting frequency reservesare available in the Inopower system, wherethe assets are online controlled according todeviations in the grid frequency down to milliseconddeviations. Slow-reacting assets areactivated in response to inaccuracies in windpower forecasts, big power cuts or failures onthe grid. The assets switch between operatingmodes throughout the day, and the powergrid can utilize capacity in the most profitableway.Operation of assets through the InopowersystemThe assets in the Inopower system are responsiveto the power price, and during timesof high wind power infeed and low powerprices, the large power consumers can benefitif they can make capacity for ancillary servicesavailable for the power grid. During lowwind power infeed resulting in higher powerprices, the production units are more competitivein making capacity available for ancillaryservices. This functionality is provided by theInopower system.
“WE WANTED TOCREATE A SO-LUTION THATCOULD BE CON-TROLLED ONGRIDS WITHLARGE AMOUNTSOF WINDENERGY”International prospectsAccording to Troels Davidsen, there is aspecific reason why Inopower is Danish-based:“We see Denmark as an obvious country toimplement the solutions, as we have lots ofwind energy here as well as large numbersof decentralized power units that we cancontrol remotely and integrate into differentmarkets.” However, Troels Davidsen alsosees opportunities to implement Inopowersolutions in other countries facing the samechallenges Denmark has experienced: “Alldecentralized production or wind power willdemand remote control and systems thatenable smaller consumption or productionunits to act in response to the power grid andsupport it when necessary. And as we have alot of experience of operating these solutionsat full scale, we see our solutions as possiblyrelevant in a lot of other countries.”www.inopower.dkSource: Troels Davidsen , Inopower A/S
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