Economic valuation of heat pumps and electric boilers in the Danish energy system

Nielsen, Maria Grønnegaard; Morales, Juan M.; Zugno, Marco; Pedersen, Thomas Engberg; Madsen, Henrik

doi:10.1016/j.apenergy.2015.08.115

Cited by 192 publications

(69 citation statements)

References 21 publications

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“…The technical limits for a gas turbine are similar to the back pressure unit (14)- (15). Here an inequality can be used to express the relation between power generation and heat production (14).…”

Section: ) Extraction Condensing Steam Turbinementioning

confidence: 99%

“…For example, dynamic stochastic programming is used in [12] to determine the optimal bidding strategy of a CHP operator in various electricity markets and robust optimization in [13] to optimally schedule the operation of CHP units in the day ahead market. In [14] stochastic programming is used to estimate the value of the electric boilers and heat pumps in a DH system as it is done also in [15], while in [16] a multiobjective chance constrained model is proposed to minimize the CHP operation costs, the total amount of primary energy consumption and the CO 2 emissions. Stochastic programming is also used in [17] where a multi-stage medium-term model for CHP operation is suggested considering some risk measure.…”

Section: Introductionmentioning

confidence: 99%

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District heating system operation in power systems with high share of wind power

Dimoulkas

Amelin

Levihn

2017

J. Mod. Power Syst. Clean Energy

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The integration of continuously varying and not easily predictable wind power generation is affecting the stability of the power system and leads to increasing demand for balancing services. In this study, a short-term operation model of a district heating system is proposed to optimally schedule the production of both heat and power in a system with high wind power penetration. The application of the model in a case study system shows the increased flexibility offered by the coordination of power generation, consumption and heat storage units which are available in district heating systems.

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Section: ) Extraction Condensing Steam Turbinementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

District heating system operation in power systems with high share of wind power

Dimoulkas

Amelin

Levihn

2017

J. Mod. Power Syst. Clean Energy

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“…The electricity consumed by EBs reserves more grid capacity to accommodate wind power [16]. Employing EBs to accommodate wind power has been shown to be feasible using value analysis [19,20], scheme design [21,22], and optimal capacity allocation [16].…”

Section: Background For Employing Ebs In Chp Plantsmentioning

confidence: 99%

Optimum Subsidy to Promote Electric Boiler Investment to Accommodate Wind Power

Wang

Liu

et al. 2017

Sustainability

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Abstract:The increasing development of combined heat and power (CHP) plants is exacerbating the wind power curtailment problem in regional power grids during the winter heating season. Electric boilers (EBs) were proposed to be employed within CHP plants to relieve this problem. However, CHP plants usually have no incentive for investing in EBs. Therefore, CHP plants must be incentivized to make such investments through appropriate compensation from beneficiaries, i.e., government and wind farms, although this has not previously been discussed. We propose a game theory model to simulate the impact of government subsidies on EB investment. We analyzed the utilization of the involved parties with the marginal cost and average cost and applied game theory to simulate the investment decisions. Then, an approximate enumeration technique was developed to identify the optimum government subsidy. An actual case of a regional power grid in northern China was investigated to validate the proposed method. A minimum government subsidy to maximize total social benefit was calculated; this subsidy can incentivize wind farms and CHP plants to invest in and use EBs.

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“…For the application of thermal energy auxiliaries in facilitating the wind power integration in the cogeneration system, related studies of heat storage (HS), electric boilers (EB), and heat pumps (HP) were reported in [25][26][27], and their positive effects were well verified in the Nordic countries. The HS was proved to be effective on the improvement of the system flexibility in [28].…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of Electric Energy Storages and Thermal Energy Auxiliaries for Improving Wind Power Integration in the Cogeneration System

Chen

Lei

2018

Energies

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Abstract:In regards to the cogeneration system in Northern China, mainly supported by combined heat and power (CHP) plants, it usually offers limited operation flexibility due to the joint production of electric and thermal power. For that large-scale wind farms included in the cogeneration system, a large amount of wind energy may have to be wasted. To solve this issue, the utilization of the electric energy storages and the thermal energy auxiliaries are recommended, including pumped hydro storage (PHS), compressed air energy storage (CAES), hydrogen-based energy storage (HES), heat storage (HS), electric boilers (EB), and heat pumps (HP). This paper proposes a general evaluation method to compare the performance of these six different approaches for promoting wind power integration. In consideration of saving coal consumption, reducing CO 2 emissions, and increasing investment cost, the comprehensive benefit is defined as the evaluation index. Specifically, a wind-thermal conflicting expression (WTCE) is put forward to simplify the formulation of the comprehensive benefit. Further, according to the cogeneration system of the West Inner Mongolia (WIM) power grid, a test system is modelled to perform the comparison of the six different approaches. The results show that introducing the electric energy storages and the thermal energy auxiliaries can both contribute to facilitating wind power integration, and the HP can provide the best comprehensive benefit.

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Economic valuation of heat pumps and electric boilers in the Danish energy system

Cited by 192 publications

References 21 publications

District heating system operation in power systems with high share of wind power

District heating system operation in power systems with high share of wind power

Optimum Subsidy to Promote Electric Boiler Investment to Accommodate Wind Power

Comparative Study of Electric Energy Storages and Thermal Energy Auxiliaries for Improving Wind Power Integration in the Cogeneration System

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