27 research outputs found
Perspektywy współpracy OSP na europejskim konkurencyjnym rynku energii i rezerw mocy w kontekście rozwiązań proponowanych przez ENTSO-E
No full textThe author has presented the prospects for cooperation between transmission system operators
(TSOs) in balancing energy and power reserves after the introduction of ENTSO-E network codes.
New areas of TSO activity are presented, as well as powers related to the process of ensuring the
NPS operation’s safety and reliability within the framework of the created model of the European
competitive energy market. In particular, issues related to the exchange and sharing of reserves
and the exchange and settlement of balancing services.
The requirements for TSOs’ co-operation within Coordinated Balancing Areas (CoBA) and the
implications of implementing functions performed within CoBAs were presented in this paper.
The terms of TSOs’ cooperation with Balancing Service Providers (BSP) and Balance Responsible
Parties (BRP) in terms of acquisition, activation and settlement of balancing products have been
defined.Autor zaprezentował perspektywy współpracy pomiędzy operatorami systemów przesyłowych (OSP) w zakresie energii bilansującej
oraz rezerw mocy po wprowadzeniu kodeksów sieciowych ENTSO-E. Przedstawiono nowe obszary aktywności OSP oraz uprawnień
związanych z procesem zapewnienia bezpieczeństwa i niezawodności pracy KSE w ramach tworzonego modelu europejskiego,
konkurencyjnego rynku energii. Obejmują one w szczególności zagadnienia związane z wymianą i współdzieleniem rezerw oraz
wymianą i rozliczaniem usług bilansowania.
Zaprezentowano wymagania określające współpracę operatorów OSP w ramach obszarów skoordynowanego bilansowania (CoBA)
oraz konsekwencje wynikające z implementacji funkcji realizowanych w ramach CoBA. Określono zasady współpracy OSP
z dostawcami usług bilansowania (BSP) oraz podmiotami odpowiedzialnymi za bilansowanie (BRP) w zakresie pozyskiwania,
aktywacji i rozliczania produktów bilansowania
UMBRELLA Deliverable D 7.3 “Workshop results on innovative operational tools”
No full textIn the present deliverable, the results of the second common ‘Workshop on intermediate results’, co-organized by UMBRELLA and iTesla projects are summarized. The workshop was hosted at ENTSO-E’s premises on January 14th, 2014 with a total number of some 80 registered participants including experts from industry, academia and regulatory bodies.Electrical Sustainable EnergyElectrical Engineering, Mathematics and Computer Scienc
UMBRELLA project - Deliverable D 7.4 “Workshop results on solutions for maximising power transits”
No full textIn the present deliverable, the results of the workshop ‘UMBRELLA Workshop on Optimized Solutions’ and ‘UMBRELLA Workshop on System State Modelling and Toolbox Design’ are summarized. The workshops were both hosted at ENTSO-E’s premises on October 22, 2013 and October 23rd, 2014 with a total number of 15 and 33 registered participants respectively, including experts from industry, academia and regulatory bodies.Electrical Sustainable EnergyElectrical Engineering, Mathematics and Computer Scienc
Explainable Artificial Intelligence to Enhance Data Trustworthiness in Crowd-Sensing Systems
No full textAround the world there has been an advancement of IoT edge devices, that in turn have enabled the collection of rich datasets as part of the Mobile Crowd Sensing (MCS) paradigm, which in practice is implemented in a variety of safety critical applications. In spite of the advantages of such datasets, there exists an inherent data trustworthiness challenge due to the interference of malevolent actors. In this context, there has been a great body of proposed solutions which capitalize on conventional machine algorithms for sifting through faulty data without any assumptions on the trustworthiness of the source. However, there is still a number of open issues, such as how to cope with strong colluding adversaries, while in parallel managing efficiently the sizable influx of user data. In this work we suggest that the usage of explainable artificial intelligence (XAI) can lead to even more efficient performance as we tackle the limitation of conventional black box models, by enabling the understanding and interpretation of a model's operation. Our approach enables the reasoning of the model's accuracy in the presence of adversaries and has the ability to shun out faulty or malicious data, thus, enhancing the model's adaptation process. To this end, we provide a prototype implementation coupled with a detailed performance evaluation under different scenarios of attacks, employing both real and synthetic datasets. Our results suggest that the use of XAI leads to improved performance compared to other existing schemes
Grid Integration of Offshore Wind Power: Standards, Control, Power Quality and Transmission
No full textOffshore wind is expected to be a major player in the global efforts toward decarbonization, leading to exceptional changes in modern power systems. Understanding the impacts and capabilities of the relatively new and uniquely positioned assets in grids with high integration levels of inverter-based resources, however, is lacking, raising concerns about grid reliability, stability, power quality, and resilience, with the absence of updated grid codes to guide the massive deployment of offshore wind. To help fill the gap, this paper presents an overview of the state-of-the-art technologies of offshore wind power grid integration. First, the paper investigates the most current grid requirements for wind power plant integration, based on a harmonized European Network of Transmission System Operators (ENTSO-E) framework and notable international standards, and it illuminates future directions. The paper discusses the wind turbine and wind power plant control strategies, and new control approaches, such as grid-forming control, are presented in detail. The paper reviews recent research on the ancillary services that offshore wind power plants can potentially provide, which, when harmonized, will not only comply with regulations but also improve the value of the asset. The paper explores topics of wind power plant harmonics, reviewing the latest standards in detail and outlining mitigation methods. The paper also presents stability analysis methods for wind power plants, with discussions centered on validity and computational efficiency. Finally, the paper discusses wind power plant transmission solutions, with a focus on high-voltage direct-current topologies and controls.DC systems, Energy conversion & Storag
UMBRELLA Deliverable D 7.2 “Workshop results on innovative operational tools”
No full textThis deliverable presents the results of the first common workshop, co-organized by UMBRELLA and iTesla projects. The workshop title is ‘Innovative tools needed for future and stable system operation’. The main focus of this common workshop is on the information exchange about the objectives, dissemination, key drivers of UMBRELLA and iTesla and results of previous studies, namely TradeWind , EWIS , and PEGASE projects. The workshop was hosted at ENTSO-E’s premises on June 21, 2012 with the total number of registered participants of 50, including experts from industry, academia and regulatory bodies.Electrical Sustainable EnergyElectrical Engineering, Mathematics and Computer Scienc
Electricity without borders - The need for cross-border transmission investment in Europe
No full textAn increase in cross-border electricity flows is foreseen in Europe in the coming decades due to large-scale penetration of renewable energy, the electrical integration of the Euro-Mediterranean region, the electrification of transport, and possible shifts in electricity generation dispatch caused by the evolution of CO2 prices. This dissertation explores the impacts of possible changes in electricity generation and demand patterns on the need for cross-border transmission investment in Europe. The analysis is performed with EUPowerDispatch, a minimum-cost unit commitment dispatch model of the European electricity system which was developed by the author and which constitutes one of the main products of his research. It is concluded that the cross-border transmission investment plans that are foreseen by ENTSO-E by 2025 are adequate given the expected evolution of the European power system. However, in order to reach the challenging European power system decarbonisation goal, significantly more cross-border transmission investment is needed, in addition to much stronger decarbonisation policies.Energy & IndustryTechnology, Policy and Managemen
Frequency Restoration Reserve Control Scheme with Participation of Industrial Loads
No full text15.10.14 KB Ok to add accepted version. Re-published author updated accepted versionIn order to accommodate larger amounts of renewable energy resources, whose power output is inherently unpredictable, there is an increasing need for frequency control power reserves. Loads are already used to provide replacement reserves, i.e. the slowest kind of reserves, in several power systems. This paper proposes a control scheme for frequency restoration reserves with participation of industrial loads. Frequency restoration reserves are required to change their active power within a time frame of tens of seconds to tens of minutes in response to a regulation signal. Industrial loads in many cases already have the capacity and capability to participate in this service. A mapping of their process constraints to power and energy demand is proposed in order to integrate industrial loads in existing control schemes. The proposed control scheme has been implemented in a 74-bus test system. Dynamic simulations show that industrial loads can be successfully integrated into the power system as frequency restoration reserves
Enhancing Distance Protection Performance in Transmission Systems with Renewable Energy Utilization
No full textThis paper deals with a comprehensive analysis to test the performance of available distance protection, that can be used in transmission networks with high penetration of converter-based distribution generation. For this, a new benchmark model has been developed according to the European Network of Transmission System Operators (ENTSO-e) guidelines. A 400 kV transmission network has been modeled in detail by taking into account wind turbine (WT) Type-3, Type-4 and PV generation as well as conventional generation where applicable. The network also makes use of a point-to-point HVDC connection, and it can be used to simulate variable penetration of distribution generation up to 100%. The system is modeled in details by making use of EMT models developed in RTDS environment. Numerous tests have been performed for protective relays from different vendors and different grid code constraints. The performance of the different vendor distance relay is analyzed for different fault types on transmission line. Further, a transient-based hybrid scheme has been discussed that is capable of operating under challenging conditions. The work is realized in the frame of the large EU Horizon 2020 project MIGRATE to study the performance of power system protection with large penetration of power electronic devices.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Intelligent Electrical Power Grid
Value-Driven System Design of Utility-Scale Airborne Wind Energy
No full textIn the current auction-based electricity market, the design of utility-scale renewable energy systems has traditionally been driven by the levelised cost of energy (LCoE). However, the market is gradually moving towards a subsidy-free era, which will expose the power plant owners to the fluctuating prices of electricity. This paper presents a computational approach to account for the influence of time-varying electricity prices on the design of airborne wind energy (AWE) systems. The framework combines an analytical performance model, providing the power curve of the system, with a wind resource characterisation based on ERA5 reanalysis data. The resulting annual energy production (AEP) model is coupled with a parametric cost model based on reference prototype data from Ampyx Power B.V. extended by scaling laws. Ultimately, an energy price model using real-life data from the ENTSO-E platform maintained by the association of EU transmission system operators was used to estimate the revenue profile. This framework was then used to compare the performance of systems based on multiple economic metrics within a chosen design space. The simulation results confirmed the expected behaviour that the electricity produced at lower wind speeds has a higher value than that produced at higher wind speeds. To account for this electricity price dependency on wind speeds in the design process, we propose an economic metric defined as the levelised profit of energy (LPoE). This approach determines the trade-offs between designing a system that minimises cost and designing a system that maximises value.Wind Energ
