Article
Green & Sustainable Science & Technology
G. Rancilio, A. Rossi, D. Falabretti, A. Galliani, M. Merlo
Summary: The energy mix has shifted towards more decentralized and renewable resources, leading to the need to include these resources in Ancillary Services Markets for balancing and dispatching the system. A meta-analysis of ASMs evolution and regulatory trade-offs aims to evaluate trends and rank possible regulatory evolutions, providing guidance for authorities and market players. The analysis also includes a survey of European countries to describe their efforts towards each evolution.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Thermodynamics
Evangelos G. Tsimopoulos, Michael C. Georgiadis
Summary: This study investigates the interaction between power producers with conventional and wind generation portfolios participating in a network-constrained pool-based market. A stochastic bi-level problem is introduced to model the strategic behavior of each producer, with linear stepwise curves used to model market participants' offers and different objective functions applied to define the range of market equilibria. A single-iterate diagonalization process is used to justify meaningful equilibria in the model.
Article
Energy & Fuels
Kehinde Abiodun, Karoline Hood, John L. Cox, Alexandra M. Newman, Alex J. Zolan
Summary: Ancillary services, such as spinning reserves, can increase the profitability of concentrating solar power plants by selling spinning reserves in addition to electric energy. A study using a dispatch optimization model and the System Advisor Model showed that selling spinning reserves in the ancillary service market can increase plant profitability by up to 7% with perfect knowledge of pricing and solar resource availability. This suggests that spinning reserve markets offer significant value streams to concentrating solar power plants with thermal energy storage capabilities.
Article
Engineering, Electrical & Electronic
Hamed Goudarzi, Mohammad Rayati, Aras Sheikhi, Ali Mohammad Ranjbar
Summary: This paper introduces a day-ahead clearing model for the simultaneous energy and ancillary services market in high penetration of renewable energy sources, considering fast-start generators as non-spinning reserve providers. By utilizing a stochastic model of security-constrained unit commitment (SCUC) problem, the proposed pricing model aims to ensure non-negative net profit for all generators despite non-convexities in the market-clearing process due to startup costs and commitment variables.
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS
(2021)
Article
Transportation Science & Technology
Yaqian Zhou, Hai Yang, Jintao Ke
Summary: This paper proposes a general model for describing the equilibrium state of a ride-sourcing market with multiple competing platforms. The market changes from monopoly to different levels of oligopoly or perfect competition as the number of platforms increases, leading to two opposing effects on system efficiency. To capture these effects, a game-theoretical model is developed to find the Nash equilibrium solutions of a competitive ride-sourcing market. The price of competition and fragmentation is quantified by establishing an upper bound of the inefficiency ratio. The market equilibrium, including the inefficiency ratio, is jointly determined by the degree of market fragmentation and competition among platforms.
TRANSPORTATION RESEARCH PART C-EMERGING TECHNOLOGIES
(2022)
Article
Engineering, Electrical & Electronic
William Seward, Meysam Qadrdan, Nick Jenkins
Summary: This study presents a linear optimization approach to account for the participation of battery storage systems in the wholesale day-ahead electricity market and multiple frequency response services. The results show that local energy systems can decrease their operating costs and improve the viability of battery storage investment by stacking multiple revenues, while reducing degradation and increasing lifetime.
ELECTRIC POWER SYSTEMS RESEARCH
(2022)
Article
Engineering, Multidisciplinary
I. G. Marneris, A. V. Ntomaris, P. N. Biskas, C. G. Baslis, D. I. Chatzigiannis, C. S. Demoulias, K. O. Oureilidis, A. G. Bakirtzis
Summary: This paper presents a holistic approach to derive the optimal offering strategy of a price-taker RES aggregator in the day-ahead energy and ancillary services markets.
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
(2023)
Article
Energy & Fuels
James Hyungkwan Kim, Fredrich Kahrl, Andrew Mills, Ryan Wiser, Cristina Crespo Montanes, Will Gorman
Summary: Variable renewable energy (VRE) has not yet made meaningful participation in U.S. ancillary services (AS) markets. VRE participation in AS markets could provide a new source of revenue for VRE resource owners and a new tool for power system operators to address emerging system constraints.
Article
Management
Vincent Conitzer, Christian Kroer, Eric Sodomka, Nicolas E. Stier-Moses
Summary: The study demonstrates the importance of budget smoothing across different auctions in real-world sequential auction markets implemented by internet companies. The concept of pacing equilibrium is introduced and its existence is proven, along with its relationship with competitive equilibria. By using a mixed-integer program (MIP) to find equilibria optimizing several relevant objectives, the researchers show rare occurrence of equilibrium multiplicity and ways to improve outcomes achieved by dynamic pacing algorithm.
OPERATIONS RESEARCH
(2022)
Article
Green & Sustainable Science & Technology
Sina Parhoudeh, Pablo Eguia Lopez, Abdollah Kavousi Fard
Summary: This paper proposes an optimal operation framework for electrical, gas, and thermal networks with energy hubs (EHs), aiming to maximize their benefits in day-ahead ancillary and energy markets. A bi-level optimization model is formulated, considering the goals of network operators and EHs. The upper-level formulation minimizes energy loss in the networks based on optimal power flow constraints, while the lower-level problem maximizes EHs' profit in day-ahead markets based on resource and storage device operational models. The proposed scheme achieves significant improvements in network operation and economic status of EHs.
Article
Engineering, Electrical & Electronic
Fan Liu, Xu Wang, Yao Xiao, Zhaohong Bie
Summary: The study presents a robust day-ahead market clearing framework for the integrated electricity and natural gas system (IEGS) to address the uncertainty challenge. By establishing a SCUC model and an economic dispatch model, along with novel price definitions, market clearing and pricing results can be effectively managed.
IEEE TRANSACTIONS ON POWER SYSTEMS
(2022)
Article
Thermodynamics
Weijie Dong, Guoqing He, Quansheng Cui, Wenwen Sun, Zhenlong Hu, Erfan Ahli Raad
Summary: This study focuses on the potential of solid oxide fuel cells and gas turbine systems to achieve high efficiency. A novel hybrid framework is proposed to minimize operating costs by integrating these systems and participating in energy and ancillary services markets. It is found that the self-scheduling method can improve system efficiency, which is validated through experiments.
Article
Engineering, Multidisciplinary
Mihaly Dolanyi, Kenneth Bruninx, Erik Delarue
Summary: Liberalized electricity markets offer cost-efficient operation and expansion of power systems but also create opportunities for strategic gaming by price-making agents. Regulators and policymakers face challenges in dealing with unconventional generation and consumption patterns and preventing strategic behavior.
OPTIMIZATION AND ENGINEERING
(2023)
Article
Computer Science, Hardware & Architecture
K. P. Naveen, Rajesh Sundaresan
Summary: The study examines a double-auction mechanism in the context of rate allocation in mobile data-offloading and network slicing markets, discussing strategic behaviors of agents (users and link-suppliers) and efficiency losses in different scenarios. A modified Stackelberg game approach is proposed to address efficiency losses, establishing a game between link-suppliers and users through bidding and response mechanisms.
IEEE-ACM TRANSACTIONS ON NETWORKING
(2021)
Article
Operations Research & Management Science
Jugal Garg, Martin Hoefer, Kurt Mehlhorn
Summary: This article investigates linear Fisher markets with satiation, which have not been studied before. It reveals that markets with both earning and utility limits have fundamentally different properties compared to markets with only one limit.
MATHEMATICS OF OPERATIONS RESEARCH
(2023)
Article
Energy & Fuels
Rogerio Rocha, Ricardo Silva, Joao Mello, Sergio Faria, Fabio Retorta, Clara Gouveia, Jose Villar
Summary: This paper proposes a three-stage model for managing energy communities, addressing individual energy bill minimization, energy surplus sharing, and grid constraint solving. The model optimizes schedules and resources, guarantees fair benefit sharing, and compensates for loss of profit or utility. Case studies demonstrate the potential benefits of negative allocation coefficients and the importance of stage one and fair internal pricing.
Article
Chemistry, Physical
Luis Jesus Fernandez, Luis Alberto Herrero, Fco Alberto Campos, Efraim Centeno
Summary: Reducing greenhouse gas emissions is crucial for Europe's energy transition, and green hydrogen production from renewable sources plays a significant role in achieving this goal. As renewable energy production capacity grows, the importance of green hydrogen is expected to increase. However, there has been no quantitative study on the feasibility of hydrogen growth plans in the Iberian Electricity Market (MIBEL) so far. This paper addresses this gap by proposing a novel mathematical programming model that integrates hydrogen generation into the MIBEL, revealing a mismatch between sustainability goals and expansion plans for renewable and green hydrogen in Spain and Portugal.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Review
Energy & Fuels
Joao Mello, Cristina de Lorenzo, Fco. Alberto Campos, Jose Villar
Summary: This paper emphasizes the importance of modeling and simulating local electricity markets and pricing mechanisms to better understand their behavior, design rules for real applications, and assess financial compensations. It provides a review of pricing mechanisms and simulation approaches, including a proposed innovative pricing mechanism based on post-delivery pool market principles. The paper also highlights the challenges and serves as a practical guide for designing internal financial compensations in energy communities.
Article
Thermodynamics
J. Mello, J. Villar
Summary: Prosumers can share locally produced energy through collective self-consumption and renewable energy communities, while also providing flexibility services for system solutions. The development of local energy markets and local flexibility markets faces challenges due to existing regulations and barriers. This work proposes innovative designs and integration approaches, along with identifying regulatory barriers, to improve the common regulatory frameworks.
Proceedings Paper
Green & Sustainable Science & Technology
Tiago Tavares, Joao Mello, Ricardo Silva, Armando Moreno, Andre Garcia, Joao Pacheco, Carlos Pereira, Mario Amorim, Clara Gouveia, Jose Villar
Summary: This paper presents an innovative digital platform that manages energy communities with self-consumption and energy trading in a local electricity market. The platform's architecture based on micro-services allows for scalability and ease of incorporating new functionalities while ensuring community and energy transaction security. The paper describes the transactions and settlement procedures, adapted for Portuguese regulation, and analyzes the results of the platform operating in a post-delivery pool market. It contributes to understanding and improving renewable energy communities' business models and management, providing insights for policymakers, researchers, and practitioners.
2023 19TH INTERNATIONAL CONFERENCE ON THE EUROPEAN ENERGY MARKET, EEM
(2023)
Proceedings Paper
Green & Sustainable Science & Technology
Joao Mello, Fabio Retorta, Ricardo Silva, Jose Villar, Joao T. Saraiva
Summary: In Walrasian markets, an auctioneer proposes prices to market participants, who react by revealing their desired quantities to buy or sell. The auctioneer adjusts the prices based on supply and demand until equilibrium is reached. We propose a new Walrasian design for local electricity markets with real-time iterations between auctioneer and participants, using previous imbalances to correct the next auction price. Simulations are conducted to test convergence and the ability to achieve efficient dynamic prices.
2023 19TH INTERNATIONAL CONFERENCE ON THE EUROPEAN ENERGY MARKET, EEM
(2023)
Proceedings Paper
Green & Sustainable Science & Technology
Luis Rodrigues, Diogo Faria, Fabio Coelho, Joao Mello, Joao T. Saraiva, Jose Villar, Ricardo J. Bessa
Summary: The new energy policies of the European Union aim to decarbonize the energy system by promoting the use of variable renewable energy sources. To accommodate the volatility of these sources, there is a growing need for flexibility in the electricity markets, leading to the development of legislation and incentives to engage consumers in providing flexibility services to the grid system.
2023 19TH INTERNATIONAL CONFERENCE ON THE EUROPEAN ENERGY MARKET, EEM
(2023)
Proceedings Paper
Green & Sustainable Science & Technology
Ricardo Silva, Sergio Faria, Armando Moreno, Fabio Retorta, Joao Mello, Jose Villar
Summary: When the price of energy shared within an energy community is based on a local energy market, participants need to bid adequately to ensure participation is more beneficial than non-participation. Alternatively, a centralized energy community bill minimization can be considered, but a fair and easily explainable mechanism is required to share the collective benefits among members without harming individual optimal behavior and providing the correct economic signal. This paper analyzes and compares common pricing mechanisms for internal compensation within a centrally managed energy community, using simple case examples to identify the fairest mechanisms that provide accurate economic signals to participants.
2023 19TH INTERNATIONAL CONFERENCE ON THE EUROPEAN ENERGY MARKET, EEM
(2023)
Proceedings Paper
Green & Sustainable Science & Technology
Joao Agrela, Igor Rezende, Tiago Soares, Clara Gouveia, Ricardo Silva, Jose Villar
Summary: This study introduces an approach for addressing the flexibility of energy consumption in Renewable Energy Communities (RECs). It suggests a two-stage model that quantifies the flexibility provided by domestic energy resources operation and negotiation on a market platform. The first stage determines the optimal consumption and technical flexibility of each prosumer's resources, while the second stage involves offering this technical flexibility on a local flexibility-only market structure. The prosumers' flexibility bids in the market are priced based on their base tariff, which motivates their participation and encourages the reduction of their energy bills or the increase in their utility.
2023 19TH INTERNATIONAL CONFERENCE ON THE EUROPEAN ENERGY MARKET, EEM
(2023)
Proceedings Paper
Green & Sustainable Science & Technology
Andre Rodrigues de Oliveira, Jose Villar Collado, Joao Tome Saraiva, Fco. Alberto Campos
Summary: This paper proposes a new hybridization approach to improve the CEVESA model for the joint dispatch of energy and secondary reserve capacity in the Iberian Electricity Market. The CEVESA model often shows a systematic bias in market prices compared to real market prices due to its inability to capture true variable production costs and additional markups in generation companies' pricing strategies. The proposed methodology corrects the power plants' markup by using a functional estimation of the offering unit cost based on initial CEVESA production costs.
2023 19TH INTERNATIONAL CONFERENCE ON THE EUROPEAN ENERGY MARKET, EEM
(2023)
Proceedings Paper
Green & Sustainable Science & Technology
Pedro Guimaraes, Armando Moreno, Joao Mello, Jose Villar
Summary: This work presents a framework for developing efficient circular renewable energy communities in the agricultural sector, by analyzing the resources and energy flows among agricultural activities, water, and electrical and thermal energies. Local industries and agricultural facilities can invest in solar PV plants, biogas production from livestock residues, and cogeneration plants to meet their energy needs. A simplified case study demonstrates the optimal capacities of the biogas and cogeneration plants based on the supply from public grids and the thermal and electrical energy needs.
2023 19TH INTERNATIONAL CONFERENCE ON THE EUROPEAN ENERGY MARKET, EEM
(2023)
Article
Multidisciplinary Sciences
Rosendo Castanon, Fco. Alberto Campos, Jose Villar, Angel Sanchez
Summary: This paper proposes an agent-based model that utilizes the Bush-Mosteller reinforcement learning algorithm to investigate the role of social expectations in the emergence of altruistic behavior. The model is compared with experimental results, and the findings suggest that a stimuli model based on empirical and normative expectations has potential in understanding decision-making processes in contexts where cooperative behavior is relevant.
SCIENTIFIC REPORTS
(2023)
Proceedings Paper
Green & Sustainable Science & Technology
J. Mello, J. Villar
Summary: This paper proposes an innovative design for the integration of local energy markets and local flexibility markets based on the current collective self-consumption regulation in Portugal, addressing issues such as the impact of activated flexibility energy transfers on the balancing responsible parties' portfolio in the wholesale settlement rules.
TECHNOLOGIES, MARKETS AND POLICIES: BRINGING TOGETHER ECONOMICS AND ENGINEERING
(2022)
Article
Engineering, Electrical & Electronic
Ehsan Rahmkhoda, Jawad Faiz, Moein Abedini
Summary: This paper investigates the failures and errors of loss-of-excitation (LOE) protection and proposes an intelligent method combined with a learning vector quantization (LVQ) neural network. The simulation results demonstrate that the proposed algorithm can detect LOE conditions quickly and prevent stresses applied to the machine and power system.
ELECTRIC POWER SYSTEMS RESEARCH
(2024)
Article
Engineering, Electrical & Electronic
Andre M. Garcia, Leonardo H. Macedo, Ruben Romero
Summary: This article presents a specialized scatter search algorithm to solve the optimal transmission switching problem considering voltage control, and its efficiency is validated through tests.
ELECTRIC POWER SYSTEMS RESEARCH
(2024)
Article
Engineering, Electrical & Electronic
Adel F. Alrasheedi, Khalid A. Alnowibet, Ahmad M. Alshamrani
Summary: This paper studies the bidding strategy problem of microgrid in a day-ahead electricity market. The DA electricity prices, demand, and uncertainties are modeled using different scenarios and robust optimization. A smart predict-and-optimize methodology is proposed, where a cost-oriented prediction model is used to replace accuracy-oriented methods. The trilevel mathematical programming approach is utilized to construct a cost-oriented model and solve the problem.
ELECTRIC POWER SYSTEMS RESEARCH
(2024)
Article
Engineering, Electrical & Electronic
Depin Lv, Qiusheng Yu, Xiaoyong Wang, Yulian Bo, Yongjing Wei, Lei Liu, Pu Zhang, Yan Zhang, Wensheng Zhang
Summary: This study proposes a method based on the MHA-CNN framework to monitor the operation status of the smart grid and power communication network coupling. The method utilizes HHT to extract features from operational data and employs MHA to extract key feature information from fault data, achieving faster fault detection speed and higher detection probability.
ELECTRIC POWER SYSTEMS RESEARCH
(2024)
Article
Engineering, Electrical & Electronic
Tao Zhang, Zhiguo Hao, Hongyue Ma, Songhao Yang, Chongtao Li
Summary: This paper introduces a dominant mode identification (DMI) method to assess the stability of grey-box grid-tied converters. The method analyzes the critical eigenvalues and can be applied to different grid connection scenarios.
ELECTRIC POWER SYSTEMS RESEARCH
(2024)
Article
Engineering, Electrical & Electronic
Aamir Nawaz, Hongtao Wang, Huiting Yang, Hammad Armghan, Jiechao Gao
Summary: This paper presents a risk constrained probabilistic problem framework for addressing the challenges of stochastic dispatching due to contingencies and the integration of renewable sources. By utilizing probabilistic analytical target cascading, polynomial chaos expansion, and benders decomposition algorithm, the proposed method reduces computational burden and improves efficiency.
ELECTRIC POWER SYSTEMS RESEARCH
(2024)
Article
Engineering, Electrical & Electronic
Thongchart Kerdphol, Issarachai Ngamroo, Tossaporn Surinkaew
Summary: This paper introduces an enhanced robust H-infinity technique to improve the regulation performance and cyber resiliency of secondary frequency control in a microgrid. The study shows that cyber-attacks affect different elements of secondary frequency control in the microgrid depending on the type of attack used.
ELECTRIC POWER SYSTEMS RESEARCH
(2024)
Article
Engineering, Electrical & Electronic
Sambeet Mishra, Praveen Prakash Singh, Ivar Kiitam, Muhammad Shafiq, Ivo Palu, Chiara Bordin
Summary: This study aims to analyze partial discharge events in high-voltage cables and extract patterns and trends. The results indicate a positive correlation between the number of PD events and the increase in voltage levels, with negative PD peaks being more frequent at lower stress levels.
ELECTRIC POWER SYSTEMS RESEARCH
(2024)
Article
Engineering, Electrical & Electronic
Cleberton Reiz, Jonatas B. Leite, Clara S. Gouveia, Mohammad Sadegh Javadi
Summary: This research proposes a bilevel method to simultaneously solve the allocation and coordination problems in microgrid protection, considering local devices. The results show that solving these problems simultaneously can save costs and select the optimal solution.
ELECTRIC POWER SYSTEMS RESEARCH
(2024)
Article
Engineering, Electrical & Electronic
Rasha Elazab, M. Ser-Alkhatm, Maged A. Abu Adma, K. M. Abdel-Latif
Summary: This paper proposes a two-layer methodology for the allocation and sizing of SVCs in radial distribution systems. The Power Loss Index (PLI) is used to choose the best candidate buses for allocating SVCs, and a two-stage stochastic programming algorithm is proposed to solve the sizing problem. The advantages of combining SVCs and the PV inverter's reactive power provision ability are also analyzed.
ELECTRIC POWER SYSTEMS RESEARCH
(2024)
Article
Engineering, Electrical & Electronic
Samreen Javaid, Dongyu Li, Abhisek Ukil
Summary: This paper introduces a new algorithm based on high pass filter for traveling wave fault location, which can differentiate the peak value of the traveling wave more easily by removing oscillation in the signal. The algorithm is tested on a DC simulation model and executed in MATLAB environment, achieving high accuracy in fault location results. Compared with traditional methods, this algorithm shows higher accuracy and faster response.
ELECTRIC POWER SYSTEMS RESEARCH
(2024)
Article
Engineering, Electrical & Electronic
Enzhe Wang, Xiangrong Chen, Hanshan Zhu, Kai Yin, Muhammad Awais, Ashish Paramane
Summary: This paper aims to reduce the power loss of tunnel cable systems by using different grounding and loss reduction methods. The case study of the submarine tunnel power cable project in Ningbo-Zhoushan, China is considered. The nodal admittance matrices of the cable are established using the telegraph equation, and the cascading algorithm is used to analyze the induced voltage and circulating current in the cable sheath, taking into account the presence of grounding node. The study finds that coordinating the amplitude and phase angle of series impedance can reduce the power loss of the cable system.
ELECTRIC POWER SYSTEMS RESEARCH
(2024)
Article
Engineering, Electrical & Electronic
Ziwei Ma, Jasronita Jasni, Mohd Zainal Abidin Ab Kadir, Norhafiz Azis
Summary: A numerical model was developed to analyze lightning attachment on UHV-AC double-circuit transmission lines. Simulation results showed that upward leaders simultaneously occurred on the ground wire and the upper-phase conductor when the phase conductors were energized. A new expression for calculating the striking distance on the ground wire was proposed based on the simulation results. Additionally, high voltage, phase angle, and terrain slope were found to increase the surface electric field of the upper-phase conductor.
ELECTRIC POWER SYSTEMS RESEARCH
(2024)
Article
Engineering, Electrical & Electronic
Kunal Kumar, Susmita Kar
Summary: This paper presents an efficient protection scheme utilizing the rate of change parameter to detect both shunt faults and high impedance faults. By comparing with the existing scheme and testing on the IEEE 13 Bus test system, the effectiveness of the proposed scheme is demonstrated.
ELECTRIC POWER SYSTEMS RESEARCH
(2024)
Article
Engineering, Electrical & Electronic
Cheng Che, Bangbang He, Zhixuan Gao, Qiwei Lu, Yang Chen, Zhifeng Wang, Jinghan Guo, Yanwen Wang
Summary: A low-cost hybrid railway power conditioner (HRPC) technology scheme is proposed in this paper to effectively compensate negative sequence current (NSC) of the V/v traction system and reduce the capacity and cost of the railway power conditioner (RPC). The proposed HRPC combines an RPC with a modular multilevel converter structure (MMC-RPC) and a railway static var compensator (RSVC) and considers regenerative braking energy in the compensation process.
ELECTRIC POWER SYSTEMS RESEARCH
(2024)
