54 results found
Chen Y, Moreno R, Strbac G, et al., 2018, Coordination Strategies for Securing AC/DC Flexible Transmission Networks With Renewables, IEEE TRANSACTIONS ON POWER SYSTEMS, Vol: 33, Pages: 6309-6320, ISSN: 0885-8950
Perez A, Quintero V, Jaramillo F, et al., 2018, Characterization of the degradation process of lithium-ion batteries when discharged at different current rates, Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering, Pages: 095965181877448-095965181877448, ISSN: 0959-6518
Reus L, Munoz FD, Moreno R, 2018, Retail consumers and risk in centralized energy auctions for indexed long-term contracts in Chile, Energy Policy, Vol: 114, Pages: 566-577, ISSN: 0301-4215
Moreira A, Strbac G, Moreno R, et al., 2018, A Five-Level MILP Model for Flexible Transmission Network Planning Under Uncertainty: A Min-Max Regret Approach, IEEE TRANSACTIONS ON POWER SYSTEMS, Vol: 33, Pages: 486-501, ISSN: 0885-8950
Moreno R, Ferreira R, Barroso L, et al., 2017, Facilitating the Integration of Renewables in Latin America: The Role of Hydropower Generation and Other Energy Storage Technologies, IEEE Power and Energy Magazine, Vol: 15, Pages: 68-80, ISSN: 1540-7977
Moreno R, Street A, Arroyo JM, et al., 2017, Planning low-carbon electricity systems under uncertainty considering operational flexibility and smart grid technologies, Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol: 375, Pages: 20160305-20160305, ISSN: 1364-503X
Konstantelos I, Moreno R, Strbac G, 2017, Coordination and uncertainty in strategic network investment: Case on the North Seas Grid, ENERGY ECONOMICS, Vol: 64, Pages: 131-148, ISSN: 0140-9883
The notion of developing a transnational offshore grid in the North Sea has attracted considerable attention in the past years due to its potential for substantial capital savings and increased scope for cross-border trade, sparking a European-wide policy debate on incentivizing integrated transmission solutions. However, one important aspect that has so far received limited attention is that benefits will largely depend on the eventual deployment pattern of electricity infrastructure which is currently characterized by severe locational, sizing and timing uncertainty. Given the lack of coordination between generation and network developments across Europe, there is a real risk for over-investment or a premature lock-in to options that exhibit limited adaptability. In the near future, important choices that have to be made concerning the network topology and amount of investment. In this paper we identify the optimal, in terms of reduced cost, network investment (including topology) in the North Seas countries under four deployment scenarios and five distinct policy choices differing in the level of offshore coordination and international market integration. By drawing comparisons between the study results, we quantify the net benefit of enabling different types of coordination under each scenario. Furthermore, we showcase a novel min–max regret optimization model and identify minimum regret first-stage commitments which could be deployed in the near future in order to enhance strategic optionality, increase adaptability to different future conditions and hence reduce any potential sub-optimality of the initial network design. In view of the above, we put forward specific policy recommendations regarding the adoption of a flexible anticipatory expansion framework for the identification of attractive investment opportunities under uncertainty.
Pipelzadeh Y, Moreno R, Chaudhuri B, et al., 2017, Corrective Control With Transient Assistive Measures: Value Assessment for Great Britain Transmission System, IEEE TRANSACTIONS ON POWER SYSTEMS, Vol: 32, Pages: 1638-1650, ISSN: 0885-8950
Strbac G, Kirschen D, Moreno R, 2016, Reliability Standards for the Operation and Planning of Future Electricity Networks, Foundations and Trends® in Electric Energy Systems, Vol: 1, Pages: 143-219, ISSN: 2332-6557
Electricity networks, designed and operated in accordance with the historic deterministic standards, have broadly delivered secure and reliable supplies to customers. A key issue regarding their evolution is how the operation and planning standards should evolve to make efficient use of the existing assets while taking advantage of emerging, non-network (or non-wires) technologies. Deployment of the smart grid will require fundamental changes in the historical principles used for network security in order to ensure that integration of low-carbon generation is undertaken as efficiently as possible through the use of new information and communication technology (ICT), and new flexible network technologies that can maximize utilization of existing electricity infrastructure. These new technologies could reduce network redundancy in providing security of supply by enabling the application of a range of advanced, technically effective, and economically efficient corrective (or post-fault) actions that can release latent network capacity of the existing system. In this context, this paper demonstrates that historical deterministic practices and standards, mostly developed in the 1950s, should be reviewed in order to take full advantage of new emerging technologies and facilitate transition to a smart grid paradigm. This paper also demonstrates that a probabilistic approach to developing future efficient operating and design strategies enabled by new technologies, will appropriately balance network investment against non-network solutions while truly recognizing effects of adverse weather, common-mode failures, high-impact low-probability events, changing market prices for pre- and post-contingency actions, equipment malfunctioning, etc. This clearly requires explicit consideration of the likelihood of various outages (beyond those considered in deterministic studies) and quantification of their impacts on alternative network operation and investment decisions, which canno
Perez A, Moreno R, Moreira R, et al., 2016, Effect of Battery Degradation on Multi-Service Portfolios of Energy Storage, IEEE TRANSACTIONS ON SUSTAINABLE ENERGY, Vol: 7, Pages: 1718-1729, ISSN: 1949-3029
Inzunza A, Moreno R, Bernales A, et al., 2016, CVaR constrained planning of renewable generation with consideration of system inertial response, reserve services and demand participation, Energy Economics, Vol: 59, Pages: 104-117, ISSN: 0140-9883
Flores-Quiroz A, Palma-Behnke R, Zakeri G, et al., 2016, A column generation approach for solving generation expansion planning problems with high renewable energy penetration, Electric Power Systems Research, Vol: 136, Pages: 232-241, ISSN: 0378-7796
Moreira R, Moreno R, Strbac G, 2016, Value of corrective network security for distributed energy storage applications, IET GENERATION TRANSMISSION & DISTRIBUTION, Vol: 10, Pages: 1758-1767, ISSN: 1751-8687
Moreira R, Moreno R, Strbac G, 2016, Synergies and Conflicts Among Energy Storage Services, IEEE International Energy Conference (ENERGYCON), Publisher: IEEE, ISSN: 2164-4322
Strbac G, Vasilakos Konstantinidis C, Moreno Vieyra R, et al., It’s All About Grids: The Importance of Transmission Pricing and Investment Coordination in Integrating Renewables, IEEE Power and Energy Magazine, ISSN: 1540-7977
Pipelzadeh Y, Moreno Vieyra R, Chaudhuri B, et al., 2015, Role of Smart Grid Technology and Corrective Control in Enhancing Network Capacity Utilisation in Great Britain with HVDC links, CIGRE SYMPOSIUM, Publisher: CIGRE
A range of advanced, technically effective and economically efficient corrective (or postfault) actions has been proposed to release latent transmission network capacity of the existing system and thus reduce network congestion and accommodate increased connection of low-carbon generation. Although the increased use of corrective control that can manage post-fault transmission overloads has proven to be clearly beneficial from an economic perspective, there are concerns related to the consequent stability (angular and voltage) of transmission systems. In this context, this paper demonstrates various corrective control measures (that can be undertaken by Special Protection Schemes –SPS–) including rapid response of generation and demand against double line outages (N-2) under extremely high power transfer conditions. To demonstrate these benefits, case studies are carried out on a detailed (full) dynamic system model of the Great Britain (GB) transmission network in DIgSILENT, which includes the Western Line-Commutated Converter based High Voltage Direct Current (LCC-HVDC). The value of corrective control measures, based on generationand demand response accompanied by Transient Assistive Measures (TAM) such as rapid changes in DC power order to improve system stability is demonstrated. It is shown that such measures can significantly increase the power transfers through the England-Scotland inter-connector while maintaining N-2 security. Moreover, it is demonstrated that although a generation ramp up/down response is naturally slower than a step-change tripping action over generation and demand (tripping actions are preferred in SPS) and therefore more prone to transient instability problems, generation-only operational measures can be deployed to deal with double circuit (N-2) outages under extremely high power transfers, given that the right portfolio of TAM is deployed. Thus TAM can effectively enhance the set of correctivecontrol measures considered b
Strbac G, Konstantelos I, Moreno Vieyra R, 2015, Emerging Modelling Capabilities for System Operations, Emerging Modelling Capabilities for System Operations, Publisher: Institute of Engineering and Technology (IET)
The Institution of Engineering and Technology was commissioned by the Council of Science and Technology(CST) to research the emerging challenges for modelling electricity systems and how Britain’s capabilitieswould need to be adapted to assess electricity system resilience as GB makes the transition to a low carbonelectricity system.
Strbac G, Pollitt M, Konstantinidis CV, et al., 2014, Electricity transmission arrangements in Great Britain: Time for change?, ENERGY POLICY, Vol: 73, Pages: 298-311, ISSN: 0301-4215
Moreno R, Moreira R, Strbac G, 2014, A MILP model for optimising multi-service portfolios of distributed energy storage, Applied Energy, Vol: 137, Pages: 554-566, ISSN: 0306-2619
Energy storage has the potential to provide multiple services to several sectors in electricity industry and thus support activities related to generation, network and system operation. Hence aggregating the value delivered by storage to these sectors is paramount for promoting its efficient deployment in the near future, which will provide the level of flexibility needed to deal with the envisaged high renewables share and the increase in peak demand driven by transport and heating electrification. In this context, we develop a Mixed Integer Linear Programming (MILP) model to schedule operation of distributed storage by coordinating provision of a range of system services which are rewarded at different market prices. The model maximises distributed storage’s net profit while providing distribution network congestion management, energy price arbitrage and various reserve and frequency regulation services through both active and reactive power control. We demonstrate benefits associated with the coordination of these services and its impacts on commercial strategies to determine optimal multi-service portfolios in the long term. We also demonstrate the value of reactive power control to support not only distribution network congestion management, but also efficient trading of energy and balancing services which are usually treated through active power-only control. In addition, we use the model to price the service of distribution network congestion management and propose an efficient investment policy to upgrade distribution network capacity in the presence of distributed storage. Finally, several case studies under current market conditions in Great Britain (GB) demonstrate that distributed storage revenues associated with frequency control services are significantly more profitable.
Strbac G, Moreno Vieyra R, Konstantelos I, et al., 2014, Strategic Development of North Sea Grid Infrastructure to Facilitate Least-Cost Decarbonisation, Strategic Development of North Sea Grid Infrastructure to Facilitate Least-Cost Decarbonisation, Publisher: E3G
Offshore wind power is expected to make a significant contribution towards de-carbonisingthe European energy system. It is envisaged that today’s installed capacity levels of about 5GW of offshore wind generation may reach 150GW by 2030, with approximately half of thiscapacity located in the North Seas. Given Europe’s goal of increased integration of the powermarkets by expanding cross-border interconnectors, there is a significant opportunity tointegrate offshore wind generation and interconnector projects in the North Seas in order totake advantage of potentially significant economies of scale and thus reduce network costs.
Moreno R, Pudjianto D, Strbac G, 2013, Transmission Network Investment With Probabilistic Security and Corrective Control, IEEE TRANSACTIONS ON POWER SYSTEMS, Vol: 28, Pages: 3935-3944, ISSN: 0885-8950
Moreno R, 2013, Operacion y Diseno Eficiente de Redes Electricas de Transmision Mediante el Uso de Nuevas Tecnologias Inteligentes [Efficient Operation and Design of Transmission Networks through New Smart Technologies], Electricidad, Vol: 155, Pages: 23-25
Pipelzadeh Y, Moreno R, Caudhuri B, et al., 2012, An assessment of transient assistive measures using HVDC for special protection schemes: Case on the GB transmission system
Given the pressing need for additional transmission capacity to accommodate renewable generation, a range of advanced, technically effective and economically efficient corrective (or post-fault) actions that can release latent network capacity of the existing system, has been proposed. However, the increased use of corrective control to manage post-fault transmission overloads, for instance, in the form of generation and demand curtailments, has raised concerns related to angular and voltage stability of transmission systems and the reliability of the communication infrastructure on which the control relies. In this context, this paper proposes three Transient Assistive Measures (TAM) to supplement the generation and demand curtailment (intertrip) actions, which help in ensuring stability during the immediate post-fault period. The effect of communication delays is also considered. The proposed methods are analysed on a dynamic system model representing the GB transmission network. A 2 GW High-Voltage Direct-Current Link with Current Source Converters (CSC-HVDC) is modelled in DIgSILENT PowerFactory and incorporated into the full dynamic model of the Great Britain (GB) system to represent the planned western bootstrap. The proposed TAM are (i) a HVDC Power Oscillation Damping (HVDC-POD) controller, (ii) an adaption of the HVDC power order, and (iii) switchable reactive support devices. We demonstrated, based on studies performed on the GB transmission network, that without the proposed transient assistive measures, the benefit of corrective control is compromised and the risk of transient instability due to possible communication delays (in intertripping generation/demand), is significantly higher. It is shown that the proposed HVDC-POD is more economical and technically efficient, compared to the alternatives, even when the POD controller is subjected to larger than anticipated latencies in feedback communication.
Moreno J, Moreno R, Rudnick H, et al., 2012, Licitaciones para el Abastecimiento Electrico de Clientes Regulados en Chile: Dificultades y Oportunidades [Auctions for Electricity Supply to Regulated Customers in Chile: Challenges and Opportunities], Revista del Centro de Estudios Publicos de Chile, Vol: 125, Pages: 139-168
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
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
Konstantinidis CV, Strbac G, Pudjianto D, et al., 2012, European Transmission Tariff Harmonization: A Modeling Analysis, 9th International Conference on the European Energy Market (EEM), Publisher: IEEE, ISSN: 2165-4077
Strbac G, Moreno R, Pudjianto D, et al., 2011, Towards a Risk-Based Network Operation and Design Standards, IEEE Power Engineering Society 2011 General Meeting
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