The role of district heating in the future Danish energy system

Münster, Marie; Morthorst, P.E.; Larsen, Helge V.; Bregnbæk, Lars; Werling, Jesper; Lindboe, Hans Henrik; Ravn, Hans F.

doi:10.1016/j.energy.2012.06.011

Cited by 194 publications

(94 citation statements)

References 15 publications

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“…The results confirm the findings of previous studies [14,15] in identifying individual heat pumps as highly socio-economically competitive in non-district heating areas. Our results indicate that in terms of making wind power investments more attractive and reducing system costs, fuel consumption, and CO2 emissions, the installation of the heat pumps is the most important step, while the system benefits of adding flexibility to the heat pumps are moderate.…”

Section: Discussionsupporting

confidence: 82%

“…Similarly, demand side management can contribute significantly to increasing system flexibility [9][10][11][12][13], and individual heat pumps in the residential sector could also contribute in this regard. Analyses show that individual heat pumps together with district heating form the best heat supply solutions in present and future energy systems [14,15]. Furthermore, the use of individual heat pumps is expected to grow considerably in Denmark [16], thereby developing into a significant part of the total electricity demand.…”

Section: Introductionmentioning

confidence: 99%

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Influence of individual heat pumps on wind power integration – Energy system investments and operation

Hedegaard¹,

Münster²

2013

Energy Conversion and Management

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Document VersionPeer reviewed version Link back to DTU Orbit Citation (APA): Hedegaard, K., & Münster, M. (2013). Influence of individual heat pumps on wind power integration -Energy system investments and operation. Energy Conversion and Management, 75, 673-684. DOI: 10.1016/j.enconman.2013.08.015 Influence of individual heat pumps on wind power integration -Energy system investments and operation ABSTRACTIndividual heat pumps are expected to constitute a significant electricity demand in future energy systems. This demand becomes flexible if investing in complementing heat storage capabilities.In this study, we analyse how the heat pumps can influence the integration of wind power applying an energy system model that optimises both investments and operation, and covers various heat storage options. The Danish energy system by 2030 with around 50-60 % wind power is used as a case study. Results show that the heat pumps, even without flexible operation, can contribute significantly to facilitating larger wind power investments and reducing system costs, fuel consumption, and CO2 emissions. Investments in heat storages can provide only moderate system benefits in these respects. The main benefit of the flexible heat pump operation is a reduced need for peak/reserve capacity, which is also crucial for the feasibility of the heat storages. Socio-economic feasibility is identified for control equipment enabling intelligent heat storage in the building structure and in existing hot water tanks. In contrast, investments in new heat accumulation tanks are not found competitive.

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Section: Discussionsupporting

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Influence of individual heat pumps on wind power integration – Energy system investments and operation

Hedegaard¹,

Münster²

2013

Energy Conversion and Management

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“…Blarke (2008) [6] sees heat pumps as the "missing link" for the Danish society in the future and introduces a concept of intermittency-friendliness. A number of energy system studies e.g., Blarke & Lund (2007) [7], Kiviluoma & Meibom (2010) [8], Münster et al (2012) [9], and Blarke (2012) [10], show that heat pumps are profitable for a system. This is also found under some conditions for more detailed analyses of the plants in the system as in Ommen et al (2014) [4] and Ommen (2015) [11], even if challenges are apparent.…”

Section: Introductionmentioning

confidence: 99%

Integration of large-scale heat pumps in the district heating systems of Greater Copenhagen

Bach

Werling²,

Ommen

et al. 2016

Energy

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116

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This study analyses the technical and private economic aspects of integrating a large capacity of electric driven heat pumps (HP) in the Greater Copenhagen district heating (DH) system, which is an example of a state-of-the-art large district heating system with many consumers and suppliers. The analysis was based on using the energy model Balmorel to determine the optimum dispatch of HPs in the system. The potential heat sources in Copenhagen for use in HPs were determined based on data related to temperatures, flows, and hydrography at different locations, while respecting technical constraints. The Balmorel model was developed further in order to provide a better representation of HPs, for analysing the seasonal variations of COP, and to represent the difference in performance of HPs connected to either distribution or transmission networks. The optimization yields roughly 3,500 full load hours (FLH) for the HPs connected to the DH distribution networks when considering a current scenario. In a zero carbon-dioxide emission scenario expected in year 2025, approximately 4,000 FLH, are achieved. In the case where HPs are connected to the DH transmission network at elevated temperatures, their operation decreases by roughly 1,000 FLH. No significant impact was found when comparing fixed and varying operation characteristics of the HP.

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“…This issue has been researched for a long period of time in different terms [4][5][6] [7,8] [9,10]. Elements of this research include flexibility in the production system, flexibility in demand [11] [12,13], flexibility by using storage systems [14], impacts on the grid [15][16][17][18] and improved integration between energy sectors, as deliberated in a series of articles [19][20][21][22][22][23][24][25][26][27][28][29][30][31][32]. Holistic energy systems analyses encompassing both technologies with a fluctuating nature and technologies adding flexibility [33][34][35] [36][37][38][39][40][41] also present work which may effectively be labelled smart grids, but as argued more explicitly in [42], there is a need for a transition to smart energy systems, not just smart grids, and framework conditions including market constructs need to adapt to the needs of more flexible systems [43].…”

Section: Introductionmentioning

confidence: 99%

System and market integration of wind power in Denmark

Lund

Hvelplund

Østergaard

et al. 2013

Energy Strategy Reviews

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Denmark has more than 10 years of experience with a wind share of approximately 20 per cent. During these 10 years, electricity markets have been subject to developments with a key focus on integrating wind power as well as trading electricity with neighbouring countries. This article introduces a methodology to analyse and understand the current market integration of wind power and concludes that the majority of Danish wind power in the period 2004-2008 was used to meet the domestic demand. Based on a physical analysis, at least 63 per cent of Danish wind power was used domestically in 2008. To analyse the remaining 37 per cent, we must apply a market model to identify cause-effect relationships. The Danish case does not illustrate any upper limit for wind power integration, as also illustrated by Danish political targets to integrate 50 per cent by 2020. In recent years, Danish wind power has been financed solely by the electricity consumers, while maintaining production prices below the EU average. The net influence from wind power has been as low as 1-3 per cent of the consumer price.

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The role of district heating in the future Danish energy system

Cited by 194 publications

References 15 publications

Influence of individual heat pumps on wind power integration – Energy system investments and operation

Influence of individual heat pumps on wind power integration – Energy system investments and operation

Integration of large-scale heat pumps in the district heating systems of Greater Copenhagen

System and market integration of wind power in Denmark

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