Publications
95 results found
Konstantelos I, Pudjianto D, Strbac G, et al., 2016, Integrated North Sea grids: The costs, the benefits and their distribution between countries, Energy Policy, Vol: 101, Pages: 28-41, ISSN: 0301-4215
A large number of offshore wind farms and interconnectors are expected to be constructed in the North Searegion over the coming decades, creating substantial opportunities for the deployment of integrated networksolutions. Creating interconnected offshore grids that combine cross-border links and connections of offshoreplants to shore offers multiple economic and environmental advantages for Europe's energy system. However,despite evidence that integrated solutions can be more beneficial than traditional radial connection practices, nosuch projects have been deployed yet. In this paper we quantify costs and benefits of integrated projects andinvestigate to which extent the cost-benefit sharing mechanism between participating countries can impede orencourage the development of integrated projects. Three concrete interconnection case studies in the North Seaarea are analysed in detail using a national-level power system model. Model outputs are used to compute thenet benefit of all involved stakeholders under different allocation schemes. Given the asymmetric distribution ofcosts and benefits, we recommend to consistently apply the Positive Net Benefit Differential mechanism as astarting point for negotiations on the financial closure of investments in integrated offshore infrastructure.
Mohtashami S, Pudjianto D, Strbac G, 2016, Strategic distribution network planning with smart grid technologies, IEEE Transactions on Smart Grid, Vol: 8, Pages: 2656-2664, ISSN: 1949-3061
This paper presents a multiyear distribution network planning optimization model for managing the operation and capacity of distribution systems with significant penetration of distributed generation (DG). The model considers investment in both traditional network and smart grid technologies, including dynamic line rating, quadrature-booster, and active network management, while optimizing the settings of network control devices and, if necessary, the curtailment of DG output taking into account its network access arrangement (firm or non-firm). A set of studies on a 33 kV real distribution network in the U.K. has been carried out to test the model. The main objective of the studies is to evaluate and compare the performance of different investment approaches, i.e., incremental and strategic investment. The studies also demonstrate the ability of the model to determine the optimal DG connection points to reduce the overall system cost. The results of the studies are discussed in this paper.
Cooper SJG, Hammond GP, McManus MC, et al., 2016, Detailed simulation of electrical demands due to nationwide adoption of heat pumps, taking account of renewable generation and mitigation, IET Renewable Power Generation, Vol: 10, Pages: 380-387, ISSN: 1752-1416
This study quantifies the increase in the peak power demand, net of non-dispatchable generation, that may be required by widespread adoption of heat pumps. Electrification of heating could reduce emissions but also cause a challenging increase in peak power demand. This study expands on previous studies by quantifying the increase in greater detail; considering a wider range of scenarios, the characteristics of heat pumps and the interaction between wind generation and demand side management (DSM). A model was developed with dynamic simulations of individual heat pumps and dwellings. The increase in peak net-demand is highly sensitive to assumptions regarding the heat pumps, their installation, building fabric and the characteristics of the grid. If 80% of dwellings in the UK use heat pumps, peak net-demand could increase by around 100% (54 GW) but this increase could be mitigated to 30% (16 GW) by favourable conditions. DSM could reduce this increase to 20%, or 15% if used with extensive thermal storage. If 60% of dwellings use heat pumps, the increase in peak net-demand could be as low as 5.5 GW. High-performance heat pumps, appropriate installation and better insulated dwellings could make the increase in peak net-demand due to the electrification of heating more manageable.
Teng F, Aunedi M, Pudjianto D, et al., 2015, Benefits of demand-side response in providing frequency response service in the future GB power system, Frontiers in Energy Research, Vol: 3, ISSN: 2296-598X
The demand for ancillary service is expected to increase significantly in the future Great Britain (GB) electricity system due to high penetration of wind. In particular, the need for frequency response, required to deal with sudden frequency drops following a loss of generator, will increase because of the limited inertia capability of wind plants. This paper quantifies the requirements for primary frequency response and analyses the benefits of frequency response provision from demand-side response (DSR). The results show dramatic changes in frequency response requirements driven by high penetration of wind. Case studies carried out by using an advanced stochastic generation scheduling model suggest that the provision of frequency response from DSR could greatly reduce the system operation cost, wind curtailment, and carbon emissions in the future GB system characterized by high penetration of wind. Furthermore, the results demonstrate that the benefit of DSR shows significant diurnal and seasonal variation, whereas an even more rapid (instant) delivery of frequency response from DSR could provide significant additional value. Our studies also indicate that the competing technologies to DSR, namely battery storage, and more flexible generation could potentially reduce its value by up to 35%, still leaving significant room to deploy DSR as frequency response provider.
Trutnevyte E, Strachan N, Dodds PE, et al., 2015, Synergies and trade-offs between governance and costs in electricity system transition, Energy Policy, Vol: 85, Pages: 170-181, ISSN: 1873-6777
Affordability and costs of an energy transition are often viewed as the most influential drivers. Conversely, multi-level transitions theory argues that governance and the choices of key actors, such as energy companies, government and civil society, drive the transition, not only on the basis of costs. This paper combines the two approaches and presents a cost appraisal of the UK transition to a low-carbon electricity system under alternate governance logics. A novel approach is used that links qualitative governance narratives with quantitative transition pathways (electricity system scenarios) and their appraisal. The results contrast the dominant market-led transition pathway (Market Rules) with alternate pathways that have either stronger governmental control elements (Central Co-ordination), or bottom-up proactive engagement of civil society (Thousand Flowers). Market Rules has the lowest investment costs by 2050. Central Co-ordination is more likely to deliver the energy policy goals and possibly even a synergistic reduction in the total system costs, if policies can be enacted and maintained. Thousand Flowers, which envisions wider participation of the society, comes at the expense of higher investment and total system costs. The paper closes with a discussion of the policy implications from cost drivers and the roles of market, government and society.
Teng F, Pudjianto D, Strbac G, et al., 2015, Potential value of energy storage in the UK electricity system, Proceedings of the ICE - Energy, Vol: 168, Pages: 107-117, ISSN: 1751-4223
This paper assesses the value of distributed energy storage and informs the business case for its multiple applications in the UK electricity system. In contrast to earlier studies that focus on the benefits of energy storage for system operation and development, this work analyses the value that it may deliver to the owner. For this purpose, three models are proposed and applied to analyse the benefit of energy storage with applications in energy and ancillary service markets, revenue maximisation in the context of feed-in tariffs and reduction of carbon dioxide emissions. A large set of studies is carried out to quantify the commercial and emissions benefits of energy storage for those applications. Sensitivity analysis across various scenarios is performed to understand the key drivers for the value of energy storage and how it is affected by energy storage parameters and other factors such as network constraints, prices of energy and ancillary services, and inherent energy system characteristics. A review of current and near-term storage technology costs and functionality is also presented.
Tsoutsos T, Tournaki S, Weiss I, et al., 2015, Photovoltaics competitiveness in Middle East and North Africa countries the European project PV PARITY, INTERNATIONAL JOURNAL OF SUSTAINABLE ENERGY, Vol: 34, Pages: 202-210, ISSN: 1478-6451
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- Citations: 3
Gan CK, Shamshiri M, Pudjianto D, 2015, Integration of PV System into LV Distribution Networks with Demand Response Application, PowerTech, 2015 IEEE Eindhoven, Publisher: IEEE
Trutnevyte E, Barton J, O'Grady A, et al., 2014, Linking a storyline with multiple models: A cross-scale study of the UK power system transition, TECHNOLOGICAL FORECASTING AND SOCIAL CHANGE, Vol: 89, Pages: 26-42, ISSN: 0040-1625
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- Citations: 80
Papadaskalopoulos D, Pudjianto D, Strbac G, 2014, Decentralized Coordination of Microgrids With Flexible Demand and Energy Storage, IEEE TRANSACTIONS ON SUSTAINABLE ENERGY, Vol: 5, Pages: 1406-1414, ISSN: 1949-3029
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- Citations: 55
Pudjianto D, Castro M, Strbac G, et al., 2014, Asymmetric impacts of European transmission network development towards 2050: Stakeholder assessment based on IRENE-40 scenarios, Energy Economics, Vol: 53, Pages: 261-269, ISSN: 1873-6181
This paper presents the assessment of stakeholder impacts of European electricity transmission network investments for a set of future system development scenarios. A techno-economic analysis is adopted, which quantifies the economic impacts on different stakeholders including electricity producers, consumers, and network investors, under the future de-carbonisation pathways described in the IRENE-40 scenarios, ranging from 2010 to 2050. To quantify the impact of transmission infrastructure development, for each pathway, two distinct scenarios of future European transmission development are assessed: “low” (no new transmission between 2010 and 2050) and “high” (optimal transmission development between 2010 and 2050 to accommodate the generation pathway).The geographical scope of the analysis covers the EU 27+2 nations. A detailed case study of Spain and France is presented to illustrate the so-called ‘asymmetric’ impacts towards different stakeholders in different importing and exporting zones. The resulting arbitrage trades shift the market equilibriums, which eventually affect asymmetrically the welfare of stakeholders.
Gan CK, Pudjianto D, Djapic P, et al., 2014, Strategic Assessment of Alternative Design Options for Multivoltage-Level Distribution Networks, IEEE TRANSACTIONS ON POWER SYSTEMS, Vol: 29, Pages: 1261-1269, ISSN: 0885-8950
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- Citations: 13
Pudjianto D, Aunedi M, Djapic P, et al., 2014, Whole-systems assessment of the value of energy storage in low-carbon electricity systems, IEEE Transactions on Smart Grid, Vol: 5, Pages: 1098-1109, ISSN: 1949-3061
Energy storage represents one of the key enabling technologies to facilitate an efficient system integration of intermittent renewable generation and electrified transport and heating demand. This paper presents a novel whole-systems approach to valuing the contribution of grid-scale electricity storage. This approach simultaneously optimizes investment into new generation, network and storage capacity, while minimising system operation cost, and also considering reserve and security requirements. Case studies on the system of Great Britain (GB) with high share of renewable generation demonstrate that energy storage can simultaneously bring benefits to several sectors, including generation, transmission and distribution, while supporting real-time system balancing. The analysis distinguishes between bulk and distributed storage applications, while also considering the competition against other technologies, such as flexible generation, interconnection and demand-side response.
Teng F, Pudjianto D, Strbac G, et al., 2014, Assessment of the value of plant flexibility in low carbon energy system
This paper examines the value of flexibility from thermal power plant in the future low carbon energy system. Stochastic scheduling model with rolling planning is performed to calculate the operation cost saving due to improved flexibility. The model optimally schedule energy and ancillary services by explicitly modelling of uncertainties associated with renewable production and generation outage. Various flexibility features are defined and analysed across two representative systems showing that the value of plant flexibility is system specific. Sensitivity studies are carried out to understand the impact of different scheduling methods and carbon taxes on the value of flexibility. This paper also presents the discussion on market reward for flexibility.
Gan CK, Lee YM, Pudjianto D, et al., 2014, Role of Losses in Design of DC Cable for Solar PV Applications, Australasian Universities Power Engineering Conference (AUPEC), Publisher: IEEE
Moreno R, Pudjianto D, Strbac G, 2014, Transmission Network Investment with Probabilistic Security and Corrective Control, IEEE PES General Meeting, Publisher: IEEE, ISSN: 1944-9925
Pudjianto D, Castro M, Strbac G, et al., 2013, Transmission infrastructure investment requirements in the future European low-carbon electricity system, ISSN: 2165-4077
This paper presents case studies projecting European cross-border electricity transmission infrastructure requirements for a range of future European electricity system scenarios. In calculating the requirements and to attain to the least cost solution, we use a Dynamic System Investment Model. The optimization model minimizes the total investment and operating costs taking into account: (i) the coordination needed between generation and transmission investment; (ii) the need to maintain reliability and feasibility of system operation; and (iii) the applications of load control technology. The model has been used to quantify the transmission requirements for five different European future generation and demand scenarios developed in the 'Infrastructure Roadmap for Energy Networks in Europe', IRENE-40, FP7 project. These include Business-as-Usual, Renewable, DESERTEC, CCS, and the High Efficiency pathways. This paper also presents a discussion on the plausible network technologies to fulfill the requirements and the potential benefits of demand side management in reducing the capacity requirements. © 2013 IEEE.
Moreno R, Pudjianto D, Strbac G, 2013, Transmission Network Investment with Probabilistic Security and Corrective Control, IEEE Transactions on Power Systems
Burt GM, Entchev E, Hammond GP, et al., 2013, Special issue on micro-generation and related energy technologies and practices for low carbon buildings, PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART A-JOURNAL OF POWER AND ENERGY, Vol: 227, Pages: 3-7, ISSN: 0957-6509
Pudjianto D, Strbac G, 2013, Maximising the utilisation of micro-generation using a multi-state optimal power flow, PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART A-JOURNAL OF POWER AND ENERGY, Vol: 227, Pages: 94-104, ISSN: 0957-6509
Pudjianto D, Djapic P, Aunedi M, et al., 2013, Smart control for minimizing distribution network reinforcement cost due to electrification, ENERGY POLICY, Vol: 52, Pages: 76-84, ISSN: 0301-4215
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- Citations: 98
Strbac G, Aunedi M, Pudjianto D, et al., 2013, Smart Grid: Facilitating Cost-Effective Evolution to a Low-Carbon Future, TRANSITION TO RENEWABLE ENERGY SYSTEMS, Editors: Stolten, Scherer, Publisher: WILEY-V C H VERLAG GMBH, Pages: 741-771
Vasilakos C, Strbac G, Pudjianto D, et al., 2012, European Transmission Tariff Harmonization: A Modeling Analysis, 9th International Conference on the European Energy Market EEM12
Moreno R, Pudjianto D, Strbac G, 2012, Integrated reliability and cost-benefit-based standards for transmission network operation, PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART O-JOURNAL OF RISK AND RELIABILITY, Vol: 226, Pages: 75-87, ISSN: 1748-006X
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- Citations: 16
Silva V, Stanojevic V, Aunedi M, et al., 2012, Smart domestic appliances as enabling technology for demand-side integration: Modelling, value and drivers, The Future of Electricity Demand: Customers, Citizens and Loads, Pages: 243-281, ISBN: 9781107008502
Introduction: Decarbonization of future electricity systems requires a significant proportion of electricity consumption to be supplied from nuclear, carbon capture and storage (CCS) plant and renewable sources. Since nuclear and CCS plant are less flexible than, for instance, natural gas-fired combined cycle plants, and renewable sources such as wind, solar and tidal are intermittent, this creates serious challenges to the way the current system is operated. In order to ensure that the system is capable of maintaining a supply and demand balance, the reduction in generation flexibility as a result of incorporating more low-carbon generation technologies has to be balanced with an increase in flexibility from demand. Consequently demand-side flexibility needs to be developed and smart domestic appliances can play an important role (IEA, 2008). In order to gain insight and understanding of the role and value of smart appliances, comprehensive studies of its economic value are required. Such analysis needs to consider relevant parameters such as consumers' behaviour and acceptance, appliance technology and future scenarios of power-system development regarding flexibility of generation and network capacity. This chapter presents a framework to assess the value of smart appliances, as flexible demand, to increase system flexibility and to provide new sources of ancillary services. The increased flexibility will improve system efficiency, reduce operating costs and carbon emissions, and increase utilization of renewable sources; from these benefits the value of smart appliances will be derived. However, any decrease in the value of energy services received as a result of, for instance, inconvenience caused by curtailment or rescheduling of consumption should, in theory, be deducted from such benefits. At the core of the framework is a model that simulates annual system operation, scheduling simultaneously generation and smart appliances, in order to minimize system oper
Gan CK, Low SY, Pudjianto D, et al., 2012, Techno-economic appraisal of alternative distribution network design options, IEEE International Conference on Power and Energy (PECon), Publisher: IEEE, Pages: 829-833
Castro M, Pudjianto D, Djapic P, et al., 2011, Reliability-driven transmission investment in systems with wind generation, IET GENERATION TRANSMISSION & DISTRIBUTION, Vol: 5, Pages: 850-859, ISSN: 1751-8687
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- Citations: 5
Kondoh J, Shafiu A, Jenkins N, et al., 2011, Investigation of Direct Load Management Scheme with Consideration of End-User Comfort, ELECTRICAL ENGINEERING IN JAPAN, Vol: 176, Pages: 19-28, ISSN: 0424-7760
Gan CK, Mancarella P, Pudjianto D, et al., 2011, Statistical appraisal of economic design strategies of LV distribution networks, ELECTRIC POWER SYSTEMS RESEARCH, Vol: 81, Pages: 1363-1372, ISSN: 0378-7796
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- Citations: 27
Pudjianto D, Mancarella P, Gan CK, et al., 2011, Closed loop price signal based market operation within Microgrids, EUROPEAN TRANSACTIONS ON ELECTRICAL POWER, Vol: 21, Pages: 1310-1326, ISSN: 1430-144X
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- Citations: 8
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