Review of concepts for a demand-driven biogas supply for flexible power generation

Hahn, H.; Krautkremer, Bernd; Hartmann, Kilian; Wachendorf, M.

doi:10.1016/j.rser.2013.08.085

Cited by 191 publications

(141 citation statements)

References 91 publications

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“…4,[8][9][10] In this context, bioenergy has the advantage of being both renewable and storable, and use of biogas from anaerobic digestion (AD) for power balancing has gained interest recently. 8,[11][12][13][14] The biogas can be used in gas engines or turbines with comparatively short start-up times. 8,15 Conventional operation of biogas CHP plants aims at continuous biogas and CHP production, however.…”

Section: Introductionmentioning

confidence: 99%

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Demand-Orientated Power Production from Biogas: Modeling and Simulations under Swedish Conditions

et al. 2015

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The total share of intermittent renewable electricity is increasing, intensifying the need for power balancing in future electricity systems. Demand-orientated combined heat and power (CHP) production from biogas has potential for this purpose. An agricultural biogas plant, using cattle manure and sugar beet for biogas and CHP production was analysed here. The model Dynamic Biogas plant Model (DyBiM) was developed and connected to the Anaerobic Digestion Model No. 1 (ADM1). Flexible scenarios were simulated and compared against a reference scenario with continuous production, in order to evaluate the technical requirements and economic implications of demand-orientated production. The study was set in Swedish conditions regarding electricity and heat price and the flexibility approaches assessed were increased CHP and gas storage capacity and feeding management. The results showed that larger gas storage capacity was needed for demand-orientated CHP production, but that feeding management reduced the storage requirement because of fast biogas production response to feeding. Income from 2 electricity increased by 10%, applying simple electricity production strategies to a doubled CHP capacity. However, as a result of the currently low Swedish diurnal electricity price variation and lack of subsidies for demand-orientated electricity production, the increase in income was too low to cover the investment costs. Nevertheless, DyBiM proved to be a useful modelling tool for assessing the economic outcome of different flexibility scenarios for demand-orientated CHP production.

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Section: Introductionmentioning

confidence: 99%

“…8,11,13 However, flexible biogas production can be achieved by feeding management, which includes varying feeding intervals and rate and substrate composition. In order to achieve a rapid feeding response, easy degradable substrates such as sugar beet, cereals, etc.…”

Section: Introductionmentioning

confidence: 99%

Demand-Orientated Power Production from Biogas: Modeling and Simulations under Swedish Conditions

et al. 2015

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“…Biogas plants are characterized by a high daily flexibility, resting upon an easy to control power output of generator sets and a relatively constant gas production. The constant gas production leads to an inflexibility related to seasonal adaptations in contrast to daily adaptations [30][31][32]. Table 2 provides an overview on the characteristics of the two clusters.…”

Section: Scenario Overviewmentioning

confidence: 99%

Impact of flexible bioenergy provision on residual load fluctuation: a case study for the TransnetBW transmission system in 2022

et al. 2017

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Background: The transition towards a renewable based power system in Germany largely depends on variable renewable energy sources (vRES) like wind power and solar PV. Their high variability over time poses new challenges for power system stability. Bioenergy as a renewable source has already been established in recent years and has the capability to offset fluctuations from wind and solar PV and can therefore play a new role in coming years. Methods: This paper describes how existing bioenergy plants can be operated in order to offset fluctuations in power systems, performing a power system modelling based on time series data. As sample transmission system (TS), TransnetBW has been chosen, one of the four German transmission systems. We modelled two different types of bioenergy plant clusters, one including solid biomass plants and the other cluster covering biogas plants and other plants with comparable characteristics. For the modelling of the operation of these clusters, we used registered time series of the years 2011 and 2012 for a total load and feed-in from wind and solar PV, which were projected for the year 2022. The flexible bioenergy clusters are operated in order to minimize fluctuations in residual load (RL). This approach served as the basis to assess how concepts for flexible bioenergy provision can contribute to the task of balancing future power systems based on vRES. Results: Bioenergy plays an important role in the renewable power supply of the TransnetBW TS, as it holds a share of 23.3% among the renewables projected for 2022. A flexible bioenergy (BE) provision allows for a reduction in daily residual load fluctuations by 30% compared to the non-flexible power generation from BE. Flexible BE effectively offsets high fluctuations originated from the feed-in of the substantial solar PV installations in the TS and also contributes to serve the peak load. But in contrast to regions with higher renewable shares from vRES, the amount of avoided BE power production in times of negative RL (excess power from renewables) is still negligible for the 2022 time frame investigated and thus reducing the immanent requirement for flexible BE. Conclusions: In line with existing studies, the results show that bioenergy is already a valuable asset to achieve the targeted REN shares and can support the integration of the large vRES capacities in coming years, if produced flexibly. Operating biomass installations in a flexible manner effectively reduce daily fluctuations in RL, allow for a better integration of vRES and contribute to cover peak power demand. But from the findings of this case study, we conclude that the focus in the near-term should be on the efficient utilization of BE as the top priority until the demand for flexible BE provision is progressively increased with rising shares of vRES. Giving the regional differences, it should be stressed that the regional context, the relative share of wind and solar PV in the power system and therefore the investigated time horizon are important for ...

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“…7700 plants [22]. Flexibilization of the energy provision and in particular the biogas sector has been identified as an important task for the future-in Germany [23,24] and also in other European countries [25,26].…”

Section: Status Quomentioning

confidence: 99%

Flexible bioenergy supply for balancing fluctuating renewables in the heat and power sector—a review of technologies and concepts

et al. 2015

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Today bioenergy plays a major role in the renewable energy provision, for heat and power and for liquid biofuels as well. With an increasing share of renewables on the one hand side and a limited availability of biomass on the other hand, the provision of bioenergy has to consider the demands of the future energy system with high shares of fluctuating wind and solar power. This includes new and improved technologies and concepts for biogas, biomethane, and liquid and solid biofuels, which are discussed in the following, while for the electricity sector, the demand for more flexible provision might take place in the years to come; for more flexible heat provision, the transition is expected in a longer time frame. For their market implementation adopted regulatory framework and price signals from electricity markets are necessary. Review

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Review of concepts for a demand-driven biogas supply for flexible power generation

Cited by 191 publications

References 91 publications

Demand-Orientated Power Production from Biogas: Modeling and Simulations under Swedish Conditions

Demand-Orientated Power Production from Biogas: Modeling and Simulations under Swedish Conditions

Impact of flexible bioenergy provision on residual load fluctuation: a case study for the TransnetBW transmission system in 2022

Flexible bioenergy supply for balancing fluctuating renewables in the heat and power sector—a review of technologies and concepts

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