Publikationen


Suche nach „[T.] [Hamacher]“ hat 14 Publikationen gefunden
Suchergebnis als PDF
    DigitalNachhaltigF: Europan Campus Rottal-Inn

    Beitrag (Sammelband oder Tagungsband)

    K. Siala, E. Baik, Matthias Huber, T. Hamacher, S. Benson

    Optimizing the Californian Power System according to the Renewable Portfolio Standards for 2030 and beyond

    Proceedings of the 37th International Energy Workshop Gothenburg

    2018

    DigitalNachhaltigF: Europan Campus Rottal-Inn

    Beitrag (Sammelband oder Tagungsband)

    N. Vespermann, Matthias Huber, S. Paulus, M. Metzger, T. Hamacher

    The Impact of Network Tariffs on PV Investment Decisions by Consumers

    2018 15th International Conference on the European Energy Market (EEM)

    2018

    DOI: 10.1109/EEM.2018.8469944

    Abstract anzeigen

    The increasing amount of self-produced energy reduces the customer base of network utilities. Assuming constant grid costs, network charges have to be increased in systems applying volumetric network tariffs. In order to understand the cost recovery problem of utilities, it is crucial to analyze consumers' PV investment and operation decisions as sources of self-produced energy. This work proposes a mathematical framework that determines PV investment by consumers subject to the day-ahead market. Volumetric and capacity network tariffs are considered, which are altered by consumers' day-ahead market demand. The optimal PV investment from a central planner's perspective serves as a benchmark. The results show that a volumetric network tariff incentivizes inefficient investments in distributed PV systems, which causes all consumers' energy costs to increase. In contrast, a capacity network tariff reduces these incentives as consumers cannot offset their expected burden of network costs by installing PV systems.

    DigitalNachhaltigF: Europan Campus Rottal-Inn

    Zeitschriftenartikel

    P. Kuhn, Matthias Huber, J. Dorfner, T. Hamacher

    Challenges and opportunities of power systems from smart homes to super-grids

    Ambio, vol. 45, no. S1, pp. 50-62

    2016

    DOI: 10.1007/s13280-015-0733-x

    Abstract anzeigen

    The world’s power systems are facing a structural change including liberalization of markets and integration of renewable energy sources. This paper describes the challenges that lie ahead in this process and points out avenues for overcoming different problems at different scopes, ranging from individual homes to international super-grids. We apply energy system models at those different scopes and find a trade-off between technical and social complexity. Small-scale systems would require technological breakthroughs, especially for storage, but individual agents can and do already start to build and operate such systems. In contrast, large-scale systems could potentially be more efficient from a techno-economic point of view. However, new political frameworks are required that enable long-term cooperation among sovereign entities through mutual trust. Which scope first achieves its breakthrough is not clear yet.

    DigitalNachhaltigF: Europan Campus Rottal-Inn

    Zeitschriftenartikel

    Matthias Huber, A. Roger, T. Hamacher

    Optimizing long-term investments for a sustainable development of the ASEAN power system

    Energy, vol. 88, no. August, pp. 180-193

    2015

    DOI: 10.1016/j.energy.2015.04.065

    Abstract anzeigen

    The electricity consumption in the ASEAN (Association of East Asian Nations) region is one of the fastest growing in the world and will lead to a dramatic increase in greenhouse gas emissions in the next decades. A decarbonization of the region's electricity supply is thus a very important measure when taking action on global climate change. This paper defines cost-optimal pathways towards a sustainable power system in the region by employing linear optimization. The proposed model simultaneously optimizes the required capacities and the hourly operation of generation, transmission, and storage. The obtained results show that all different kinds of renewable sources will have to be utilized, while none of them should have a share of more than one third. The findings give reason for setting up an ASEAN power grid, as it enables the transportation of electricity from the best sites to load centers and leads to a balancing of the fluctuations from wind and solar generation. We suggest fostering a diversified extension of renewables and to elaborate on political and technical solutions that enable the build up an transnational supergrid.

    DigitalNachhaltigF: Europan Campus Rottal-Inn

    Zeitschriftenartikel

    Matthias Huber, D. Dimkova, T. Hamacher

    Integration of wind and solar power in Europe: Assessment of flexibility requirements

    Energy, vol. 69, no. 1 May 2014, pp. 236-246

    2014

    DOI: 10.1016/j.energy.2014.02.109

    Abstract anzeigen

    Flexibility is the ability of a power system to respond to changes in power demand and generation. Integrating large shares of variable renewable energy sources, in particular wind and solar, can lead to a strong increase of flexibility requirements for the complementary system, traditionally hydrothermal, which has to balance the fluctuations of variable generation. We quantify these flexibility requirements at the operational timescale of 1–12 hours and different spatial scales across Europe. Our results indicate that three major factors determine the ramping flexibility needed in future power systems: the penetration of variable renewables, their mix and the geographic system size. Compared to the variability of load, flexibility requirements increase strongly in systems with combined wind and PV (photovoltaics) contribution of more than 30% of total energy and a share of PV in the renewables mix above 20–30%. In terms of extreme ramps, the flexibility requirements of a geographically large, transnational power system are significantly lower than of smaller regional systems, especially at high wind penetration.

    DigitalNachhaltigF: Europan Campus Rottal-Inn

    Beitrag (Sammelband oder Tagungsband)

    B. Neudecker, P. Wimmer, Matthias Huber, T. Hamacher

    Economic Assessment of Range Extension Technologies for BEVs in 2020

    Proceedings of the Conference on Future Automotive Technology, Focus Electromobility

    2013

    Abstract anzeigen

    This paper focusses on an energy economic analysis of battery electric vehicles (BEVs), specifically investigating their means to extend the driving range on long distance trips in the year 2020. Three range extension technologies – fast charging, battery switching and driving with an on-board micro internal combustion engine – are hereby compared. The implemented simulation tool ZEVS models the particularities of BEVs in 27 European countries, whereby specifically the methodologies for modelling the daily driving habits of medium and long distance trips and the additional power demand for heating (winter) and cooling (summer) are described. The resulting load curves are then incorporated in a further modelling tool, URBS-EU, which simulates a cost minimal power plant portfolio supplying renewable energy to BEV power demand. An in-depth results analysis shows that BEVs with battery switch technology are responsible for the least amount of CO2 emissions, have the lowest primary energy generation costs and integrate renewable energy feed-in most efficiently in comparison to the other two range extension alternatives.

    DigitalNachhaltigF: Europan Campus Rottal-Inn

    Zeitschriftenartikel

    Matthias Huber, F. Sänger, T. Hamacher

    Das Post-EEG-Potenzial von Photovoltaik im privaten Strom-und Wärmesektor

    Energiewirtschaftliche Tagesfragen, vol. 63, no. 9, pp. 57-61

    2013

    Abstract anzeigen

    Die Förderung der Photovoltaik (PV) wird nach derzeitigen Plänen bei Erreichen des im Juni 2012 eingeführten „Deckels“ von 52 GW installierter Leistung eingestellt. Jedoch könnte der Ausbau auch ohne jegliche Förderung deutlich über diesen Wert hinausgehen. Ermöglicht wird dies durch weitere Kostendegressionen sowie durch eine Fokussierung des Geschäftsmodells für Privathaushalte auf die Maximierung des Stromeigenverbrauchs. Dieser kann durch elektrische Speicher sowie durch die thermische Nutzung von Überschussstrom zur Warmwasserbereitung und Heizungsunterstützung erhöht werden. Für die brei-tere Verwendung elektrischer Speicher ist jedoch zunächst eine erhebliche Kostensenkung auf maximal 500 €/kWh notwendig. Hingegen ist die Nutzung von Überschussstrom im Wärmebereich bereits heute eine wirtschaftliche Alternative und ermöglicht erste subventionsfreie und wirtschaftlich lohnende Anwendungen dezentraler PV-Systeme in Deutschland. Eine aktuelle Studie zeigt, wie sich das „Post-EEG“-Potenzial für die Strom- und Wärmeversorgung im privaten Bereich abschätzen lässt.

    DigitalNachhaltigF: Europan Campus Rottal-Inn

    Beitrag (Sammelband oder Tagungsband)

    Matthias Huber, T. Hamacher, C. Ziems, H. Weber

    Combining LP and MIP approaches to model the impacts of renewable energy generation on individual thermal power plant operation

    2013 IEEE Power & Energy Society General Meeting

    2013

    DOI: 10.1109/PESMG.2013.6672804

    Abstract anzeigen

    A common method of modeling the operation of power plants in competitive electricity markets is mixed integer programing (MIP). Despite the advantages of the method, it requires solving an NP-hard problem. Modeling all of Europe with several thousand power plants thus would take enormous computational power. In order to reduce problem complexity in this large scale system, while still including detailed behavior of individual plants, we develop an approach where MIP is applied only to focus regions that are analyzed in detail combined with a linear programming model (LP) of all other regions. This combination allows for the prediction of impacts of renewable integration all over Europe on individual power plants in Germany. The results indicate that operational hours of thermal power plants will go down significantly, while the number of start-ups will increase. In order to avoid curtailments of renewable power, enhancements in power plant flexibility will be inevitable.

    DigitalNachhaltigF: Europan Campus Rottal-Inn

    Beitrag (Sammelband oder Tagungsband)

    H. Mangesius, S. Hirche, Matthias Huber, T. Hamacher

    A framework to quantify technical flexibility in power systems based on reliability certificates

    2013 4th IEEE/PES Innovative Smart Grid Technologies Europe (ISGT EUROPE)

    2013

    DOI: 10.1109/ISGTEurope.2013.6695460

    Abstract anzeigen

    Power systems are increasingly stressed by variable and unpredictable generation from various sources. We identify the qualitative framework of flexibility as an adequate tool to specify requirements that allow the system to handle this variability. An open problem is the quantification of technical flexibility that incorporates limitations from transmission system and component behavior in contrast to existing copper plate supply and demand balance approaches. We develop such a quantitative method for single components on the basis of a priori specified reliability criteria. Our framework bases on a combined static power flow and small signal stability analysis. In a perturbative approach we derive sensitivity-based formula for eigenvalue variations under nonlinear changes of steady power flow set points. To this end, we define rigorously the terms flexibility metric and technical flexibility of single components. We provide an algorithmic procedure for computation of tolerance ranges of individual system components such that the overall behavior remains reliable.

    DigitalNachhaltigF: Europan Campus Rottal-Inn

    Beitrag (Sammelband oder Tagungsband)

    Matthias Huber, F. Sanger, T. Hamacher

    Coordinating smart homes in microgrids: A quantification of benefits

    2013 4th IEEE/PES Innovative Smart Grid Technologies Europe (ISGT EUROPE)

    2013

    DOI: 10.1109/ISGTEurope.2013.6695357

    Abstract anzeigen

    A growing number of households are seeking energy autonomy and economic benefits by installing micro-CHP and PV generators, as well as battery storage units in their so-called smart homes. An option to further increase benefits, is to install a community microgrid and coordinate smart homes intelligently. To quantify this increase, we apply numerical simulations using real-world data for household loads in a temporal resolution of 15-minutes. In systems consisting of CHP-units, the degree of electricity autonomy rises from 50% to 80% through installing a microgrid, allowing lucrative CHP operation. In PV-based systems, the benefits are fewer and if battery storage is installed additionally, they almost disappear completely. As a consequence, intelligently managed microgrids are as valuable option for the integration of microgeneration as long as decentralized battery storage is not profitable and thus not employed.

    DigitalNachhaltigF: Europan Campus Rottal-Inn

    Zeitschriftenartikel

    T. Hamacher, Matthias Huber, J. Dorfner, K. Schaber, A. Bradshaw

    Nuclear fusion and renewable energy forms: Are they compatible?

    Fusion Engineering and Design, vol. 88, no. 6-8, pp. 657-660

    2013

    DOI: 10.1016/j.fusengdes.2013.01.074

    Abstract anzeigen

    Nuclear fusion can be considered as a base-load power plant technology: High investment costs and limited operational flexibility require continuous operation. Wind and solar, on the other hand, as the putative main pillars of a future renewable energy system, are intermittent power sources. The resulting variations that occur on many different time scales require at first sight a rather flexible back-up system to balance this stochastic behavior. Fusion would appear not to be well suited for this task. The situation changes, however, if a large-scale renewable energy system is envisaged based on a transnational, or even transcontinental power grid. The present paper discusses a possible European power system in the year 2050 and beyond. A high percentage share of renewable energies and a strong power grid spanning the whole of Europe and involving neighboring countries, in particular those in North Africa, are assumed. The linear programming model URBS is used to describe the power system. The model optimizes the overall system costs and simulates power plant operation with an hourly resolution for one whole year. The geographical resolution is at least at the country level. The renewable technologies are modeled first on a more local level and then summed together at the country or regional level. The results indicate that the smoothing effects of the large-scale power grid transform the intermittent renewable supply, which is then more compatible with base-load power plants such as fusion reactors.

    DigitalNachhaltigF: Europan Campus Rottal-Inn

    Beitrag (Sammelband oder Tagungsband)

    Matthias Huber, A. Trippe, P. Kuhn, T. Hamacher

    Effects of large scale EV and PV integration on power supply systems in the context of Singapore

    2012 3rd IEEE PES Innovative Smart Grid Technologies Europe (ISGT Europe)

    2012

    DOI: 10.1109/ISGTEurope.2012.6465831

    Abstract anzeigen

    Electric vehicles (EVs) are a key technology to reduce dependency on oil imports as well as to diminish environmental effects of individual transportation. Especially in megacities like Singapore where travel distances are moderate, this new mode of transportation is often discussed as a future option. This paper investigates possible effects of large scale EV integration on the power supply system. A unit commitment model combined with an integrated approach for smart charging is used. The mixed-integer linear programming (MILP) formulated unit commitment algorithm cooptimizes energy, regulation, and spinning reserve power. The effects of different charging strategies on the power plant scheduling are analyzed. The power system infrastructure is kept at status quo in a baseline scenario and extended to future scenarios with intermittent photovoltaics (PV) power. Effects on power plants scheduling are evaluated by measuring resulting variable cost of electricity as well as CO 2 -emissions. Moreover, effects of EVs providing regulation and spinning reserve by controllable charging are investigated.

    DigitalNachhaltigF: Europan Campus Rottal-Inn

    Matthias Huber, J. Dorfner, T. Hamacher

    Electricity System Optimization in the EUMENA Region

    Technischer Bericht im Auftrag der dii GmbH, München

    DigitalNachhaltigF: Europan Campus Rottal-Inn

    T. Hamacher, T. Hartmann, K. Siala, Matthias Huber, P. Kuhn, L. Stolle

    Gesicherte Stromversorgung in Bayern

    Technischer Bericht im Auftrag des Bayerischen Staatsministeriums für Wirtschaft, Landesentwicklung und Energie

    Abstract anzeigen

    Kernenergie ist nach wie vor eine wichtige Säule der Stromversorgung in Bayern. Im Jahr 2013 betrug ihr Beitrag noch knapp die Hälfte der gesamten Bruttostromerzeugung. Damit stellt sich die Frage, wie die Stromversorgung in Bayern nach Stilllegung aller Kernkraftwerke bis zum Jahr 2022 sichergestellt werden kann. Im Rahmen dieser Studie wurden vier verschiedene Möglichkeiten anhand von Szenarien analysiert, die aus technischer Sicht grundsätzlich denkbar sind: Bau von HGÜ Leitungen, Bau von Gaskraftwerken, Ausbau der Erneuerbaren Energien, sowie dezentraler Ausbau von KWK-Anlagen. Für jedes Szenario wurde dabei zunächst mittels eines Optimierungsmodells die kostengünstigste Betriebsweise aller Kraftwerke im europäischen Verbundnetz unter Berücksichtigung von Einschränkungen durch die zugrunde gelegte Infrastruktur berechnet. Diese Daten bilden die Grundlage für einen Vergleich der Optionen anhand verschiedener Kriterien. Sofern keine zusätzlichen Kraftwerkskapazitäten in Bayern über die aktuelle Planunghinaus aufgebaut werden, muss in Zukunft knapp die Hälfte des Strombedarfs nach Bayern importiert werden. Die Ausweitung der Übertragungskapazitäten mittels neuer HGÜ-Leitungen konnte in diesem Zusammenhang als Maßnahmemit Vorteilenidentifiziert werden, da in diesem Fall der Ausgleich innerhalb Deutschlandserleichtert und damit die Gefahr von unterschiedlichen Preiszonen in Deutschland reduziert sowie die Stromversorgung Bayerns zu wettbewerbsfähigen Preisen gewährleistet wird. Der Zubau von weiteren Gaskraftwerken hat auf den ersten Blick nur einen begrenzten Nutzen, da diese Kraftwerke unter derzeitigen Marktbedingungen nur selten eingesetzt würden. Allerdings können sie mit geringem finanziellem Aufwand einen deutlichen Beitrag zur Versorgungssicherheit (sichere Leistungsbereitstellung) leisten. Der Ausbau der Erneuerbaren Energien über die derzeitigen Ziele hinaus bzw. der Einsatz einer Vielzahl von dezentralen Blockheizkraftwerken steht in Verbindung mit vergleichsweise hohen Kostensowie im letzteren Fall zusätzlich mit einem hohen Ausstoß von klimaschädlichen Emissionen in Bayern. In anderen Regionen Europas wird dadurch allerdings die Emission von klimaschädlichen Gasen überproportional reduziert. Beide Möglichkeiten beinhalten zudem Herausforderungender konkreten Umsetzung aufgrund von umfänglichen gesetzlichen Anpassungen und einer großen Anzahl von neu zu installierenden Anlagen. Auch wenn im Rahmen der Studie nur vier Szenarienuntersucht wurden, erlauben die Ergebnisse die Schlussfolgerung, dass vorteilhafte Synergieeffekte in der sinnvollen Kombination eines Ausbaus der Kapazitäten des Übertragungsnetzes, der Erneuerbaren Energien –in Bayern insbesondere der Photovoltaik– und von dezentralen KWK-Anlagen liegen.