Energy Storages and Flexible Loads to Support Large Wind Power Penetration
Authors
Uslu, Umur ; Zhang, Boyang
Term
4. term
Education
Publication year
2016
Submitted on
2016-05-31
Pages
114
Abstract
Danmark sigter mod at være fossilfri i 2050, hvilket vil give en langt større andel af vindkraft i elsystemet. En høj vindandel gør styring og drift af systemet mere udfordrende. For at håndtere dette skal det traditionelle elnet udvikles til et Smart Grid. I et Smart Energy System kan fleksibelt elforbrug i teknologier som elbiler, varmepumper og elektrolyseanlæg fungere som efterspørgselsrespons og indirekte energilagring, der støtter integration af mere vindkraft. Denne afhandling fokuserer på brugen af elektrolyseanlæg, aggregerede varmepumper og elbiler som fleksible belastninger og tilknyttet lagring til effektbalance i vinddominerede systemer. Der gennemføres dynamiske analyser på en IEEE-standard netmodel under forskellige driftsforhold og scenarier i DIgSILENT PowerFactory. I analyserne modelleres de fleksible belastninger til Load Frequency Control (frekvensstyring) og koordinering, så elnettets frekvens kan holdes stabil.
Denmark aims to be fossil-free by 2050, which will bring a much larger share of wind power into the electricity system. A high share of wind makes system control and operation more challenging. To handle this, the conventional grid needs to evolve into a Smart Grid. In a Smart Energy System, flexible electricity use in technologies such as electric vehicles, heat pumps, and electrolyzers can act as demand response and indirect energy storage, supporting the integration of more wind power. This thesis focuses on using electrolyzers, aggregated heat pumps, and electric vehicles as flexible loads and associated storage to balance power in wind-dominated systems. Dynamic analyses are carried out on an IEEE standard grid model under different operating conditions and scenarios in DIgSILENT PowerFactory. In these analyses, the flexible loads are modeled for load-frequency control and coordination, helping keep the grid frequency stable.
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