Adriano Arrigo, Christos Ordoudis, J. Kazempour, Z. D. Grève, J. Toubeau, F. Vallée
{"title":"Optimal Power Flow Under Uncertainty: An Extensive Out-of-Sample Analysis","authors":"Adriano Arrigo, Christos Ordoudis, J. Kazempour, Z. D. Grève, J. Toubeau, F. Vallée","doi":"10.1109/ISGTEurope.2019.8905752","DOIUrl":"https://doi.org/10.1109/ISGTEurope.2019.8905752","url":null,"abstract":"The uncertainty induced by high penetration of stochastic generation in power systems requires to be properly taken into account within Optimal Power Flow (OPF) problems to make informed day-ahead decisions that minimize the social cost in view of potential balancing actions. This ends up in a two-stage OPF problem that is usually solved using two-stage stochastic programming or adaptive robust optimization. Another alternative is the use of chance-constrained programming that allows to control the conservativeness of the decisions. In this paper, we aim at defining a fair basis for assessing the performance of these three techniques, using an extensive out-of-sample evaluation. Considering a common wind power database, each technique leads to optimal day-ahead decisions that are a posteriori assessed through the real-time stage on unseen realizations of the uncertainty. Our main conclusion is that undertaking conservative decisions results in lower standard deviations of the cost, but at the expense of higher expected cost.","PeriodicalId":305933,"journal":{"name":"2019 IEEE PES Innovative Smart Grid Technologies Europe (ISGT-Europe)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125337677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Andreas Kotsonias, L. Hadjidemetriou, E. Kyriakides, Yiannakis Ioannou
{"title":"Operation of a Low Voltage Distribution Grid in Cyprus and the Impact of Photovoltaics and Electric Vehicles","authors":"Andreas Kotsonias, L. Hadjidemetriou, E. Kyriakides, Yiannakis Ioannou","doi":"10.1109/ISGTEurope.2019.8905779","DOIUrl":"https://doi.org/10.1109/ISGTEurope.2019.8905779","url":null,"abstract":"The operation of a typical 4-wire, radial, Low Voltage Distribution Grid (LVDG) in the Cyprus power system, where the neutral conductor is grounded only at the MV/LV transformer, is investigated under different scenarios. These include seasonal loading profiles and different penetration levels of photovoltaics (PVs) and electric vehicles (EVs). The analysis is focused on the impact of PVs and EVs on the voltage profile of the LVDG, the loading conditions of the distribution lines/cables and on the system losses. The results indicate that even with a moderate number of PVs, the admissible voltage limits can be exceeded due to the significant voltage drop across the neutral conductor. Moreover, the distribution lines/cables near the transformer can be overloaded if the charging process of the electric vehicles is not coordinated and is left freely to end users.","PeriodicalId":305933,"journal":{"name":"2019 IEEE PES Innovative Smart Grid Technologies Europe (ISGT-Europe)","volume":"242 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122522937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
C. Bonnard, A. Blavette, S. Bourguet, F. Rongère, T. Kovaltchouk, T. Soulard
{"title":"Towards the optimal use of an existing MRE electrical network from an electrothermal perspective","authors":"C. Bonnard, A. Blavette, S. Bourguet, F. Rongère, T. Kovaltchouk, T. Soulard","doi":"10.1109/ISGTEurope.2019.8905532","DOIUrl":"https://doi.org/10.1109/ISGTEurope.2019.8905532","url":null,"abstract":"Marine renewable energy (MRE) is an interesting sustainable source of power. However, planning the cost-effective integration of MRE, and in particular of wave energy, in the energy mix remains a challenge as its levelized cost of energy (LCOE) is still greater than these of more conventional energy sources. This paper describes a preliminary study about the energy production management of a simulated wave energy converter (WEC) farm based on point absorbers that could be installed in the vicinity of the SEM-REV site, i.e. the French multi-technology open sea test site. The proposed approach is based on the temporal analysis of the electrothermal behavior of the export cable of the SEM-REV. The models developed under Matlab-Simulink®, are generic and can be easily extended to other WEC types and more sophisticated models and control strategies, as well as to other energy sources (e.g. offshore wind). It is demonstrated in this work that there is room to maximize the utilization of the export cable, which allows to increase wave electricity production during a predetermined sea-state sequence with limited to no curtailment.","PeriodicalId":305933,"journal":{"name":"2019 IEEE PES Innovative Smart Grid Technologies Europe (ISGT-Europe)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131167095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Dulip Madurasinghe, Paranietharan Arunagirinathan, G. Venayagamoorthy
{"title":"Online Identification of Power System Network Branch Events","authors":"Dulip Madurasinghe, Paranietharan Arunagirinathan, G. Venayagamoorthy","doi":"10.1109/ISGTEurope.2019.8905508","DOIUrl":"https://doi.org/10.1109/ISGTEurope.2019.8905508","url":null,"abstract":"The electric power grid infrastructure is the most critically important man-made system in use today, particularly since all other infrastructures depend on the reliability of a robust electrical infrastructure. The smart grid transformation enables the real-time situational awareness through synchronized measurements. The communication network capable of bi-directional communication is responsible for the full connectivity of all the measurement and control units. In the power system, the transmission network is the bridge between the bulk generation and distribution system. The reliability of the power system is highly dependent on the successful operation of the geographically distributed transmission network and its components. Power system network branch outages, which may occur due to number of reasons, may result in either partial or complete blackout of the power system. The smart grid is a cyber-physical system. The cyber-physical systems are vulnerable to cyber and physical attacks. In this paper transmission network branch outage identification using phasor measurement units is investigated. Real-time digital simulator based simulation platform has been used. Admittance matrix based approach and neural network approach are investigated and performances evaluated.","PeriodicalId":305933,"journal":{"name":"2019 IEEE PES Innovative Smart Grid Technologies Europe (ISGT-Europe)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132543889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
D. Topić, H. Chamorro, G. Knežević, Rebecca Rye, F. Gonzalez-Longatt, V. Sood, J. Perko
{"title":"Analysis of PV Systems and Charging Stations Integration into the Public Lighting Infrastructure","authors":"D. Topić, H. Chamorro, G. Knežević, Rebecca Rye, F. Gonzalez-Longatt, V. Sood, J. Perko","doi":"10.1109/ISGTEurope.2019.8905562","DOIUrl":"https://doi.org/10.1109/ISGTEurope.2019.8905562","url":null,"abstract":"The utilization of Electric Vehicles (EV) is increasing every day. This implies an increasing usage of charging stations for the EV. Public lighting infrastructure during the day is not used and offers a huge potential for the integration of the charging stations. On the other hand, EVs are environmentally friendly if the energy for EVs comes from RESs. The goal of this paper is to investigate how PV systems can be used as a power supply for charging stations. In this way, one benefit is that EVs can be used as energy storage elements and allow better integration of the PV systems. A second benefit is that EV will be supplied by renewable energy. In this paper, a study on 5 scenarios is conducted. Based on simulation results in different scenarios, it can be concluded that PV system and charging stations can be easily integrated into the existing PLS.","PeriodicalId":305933,"journal":{"name":"2019 IEEE PES Innovative Smart Grid Technologies Europe (ISGT-Europe)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132661592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Keynote Address Details","authors":"F. Lambert","doi":"10.1109/isgteurope.2019.8905518","DOIUrl":"https://doi.org/10.1109/isgteurope.2019.8905518","url":null,"abstract":"The regulated utility model with a centralized grid where dispatched generation follows load has been very effective for over 100 years! The grid, however, is rapidly changing with Exponential Technologies (Computation, PV solar, wind, power semis, electric transportation, storage, microcontrollers, sensors, IoT, communication technologies, block-chain, cloud, autonomous control, deep learning) where traditional control paradigms are breaking down. Utilities would like to centrally control the ‘smart’ edge devices on the grid...but this is not scalable to millions of nodes. A decentralized paradigm will be required for the future!","PeriodicalId":305933,"journal":{"name":"2019 IEEE PES Innovative Smart Grid Technologies Europe (ISGT-Europe)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132823951","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Novel Formulation of PTDF and LODF Matrices for Security Constrained Optimal Power Flow for Hybrid AC and DC Grids","authors":"M. Giuntoli, V. Biagini, K. Schönleber","doi":"10.1109/ISGTEurope.2019.8905672","DOIUrl":"https://doi.org/10.1109/ISGTEurope.2019.8905672","url":null,"abstract":"Linearized or DC optimal power flow (OPF) algorithms are extensively used in power system management both during operation and planning. Those algorithms offer in many applications a good compromise between accuracy and calculation performance. Recently the growing need of planning and controlling mixed AC and DC grids required a reviewed formulation of the classical DC OPF. This paper proposes a novel formulation of the DC OPF problem for mixed AC and DC grids. The matrices expressing the optimization problem equality and inequality constraints are suitably derived to model embedded, multi-terminal and meshed HVDC connections. Preventive and corrective security can be analyzed considering AC and DC outages. The validity and the performance of the proposed optimization model is demonstrated on IEEE 5 node test grid. The advantage of the proposed formulation is its simplicity and comprehensibility.","PeriodicalId":305933,"journal":{"name":"2019 IEEE PES Innovative Smart Grid Technologies Europe (ISGT-Europe)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133726177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Behdad Faridpak, Hamed Farhadi Gharibeh, M. Farrokhifar, David Pozo
{"title":"Two-Step LP Approach for Optimal Placement and Operation of EV Charging Stations","authors":"Behdad Faridpak, Hamed Farhadi Gharibeh, M. Farrokhifar, David Pozo","doi":"10.1109/ISGTEurope.2019.8905469","DOIUrl":"https://doi.org/10.1109/ISGTEurope.2019.8905469","url":null,"abstract":"The development of electric vehicles (EVs) has led to an increase in the number of electric vehicle charging stations (EVCSs). However, the lack of proper charging infrastructure can demote the expansion of the electric transportation fleet. In this regard, reducing the impact of EVCS on the distribution networks and choosing optimal charging operations are essential challenges. The optimal placement of an EVCS to minimize the supply cost will encourage the rapid development of the EV transportation system. This paper presents a two-step linear programming (LP) solution for the placement of EVCS with the purpose of optimal operation of an electric vehicle charging station. The charging starting time and charging time interval of each EV are modeled as uncertainty variables. A case study based on a medium-voltage CIGRE distribution network is used to perform simulations and demonstrate the proposed methodology. The numerical analysis is carried out for different charging operation modes based on the standard EV conductive charging systems, IEC 61851.","PeriodicalId":305933,"journal":{"name":"2019 IEEE PES Innovative Smart Grid Technologies Europe (ISGT-Europe)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115081798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Prodromos Makris, D. Vergados, Ioannis Mamounakis, Georgios Tsaousoglou, Konstantinos Steriotis, N. Efthymiopoulos, Emmanouel A. Varvarigos
{"title":"A Novel Research Algorithms and Business Intelligence Tool for Progressive Utility's Portfolio Management in Retail Electricity Markets","authors":"Prodromos Makris, D. Vergados, Ioannis Mamounakis, Georgios Tsaousoglou, Konstantinos Steriotis, N. Efthymiopoulos, Emmanouel A. Varvarigos","doi":"10.1109/ISGTEurope.2019.8905515","DOIUrl":"https://doi.org/10.1109/ISGTEurope.2019.8905515","url":null,"abstract":"Progressive electric utilities are gradually digitizing their business in order to be able to efficiently manage their customer portfolio and cope with the increasing competition in the retail market. Thus, advanced S/W tools and platforms are needed, like the Research Algorithms and Business Intelligence Tool (RABIT) proposed in this paper. RABIT provides advanced data analytics services (i.e. advanced search, profilers, recommenders) targeted to the utility's administrative users (e.g. business analysts). In addition, it disposes: i) dynamic and behavioural pricing models linked with various innovative energy programs, and ii) algorithms for the creation and dynamic adaptation of virtual energy communities. RABIT can also automatically analyze exhaustive business/strategy ‘what-if’ scenarios by running parameterized system-level simulations. Performance evaluation results show that a utility company can exploit RABIT in order to: i) reduce costs for purchasing energy from wholesale market, ii) enhance its end users' welfare, iii) increase its business profits, and iv) increase its portfolio's energy efficiency.","PeriodicalId":305933,"journal":{"name":"2019 IEEE PES Innovative Smart Grid Technologies Europe (ISGT-Europe)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115711679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
N. S. Ugwuanyi, Xavier Kestelyn, O. Thomas, B. Marinescu
{"title":"A Novel Method for Accelerating the Analysis of Nonlinear Behaviour of Power Grids using Normal Form Technique","authors":"N. S. Ugwuanyi, Xavier Kestelyn, O. Thomas, B. Marinescu","doi":"10.1109/ISGTEurope.2019.8905682","DOIUrl":"https://doi.org/10.1109/ISGTEurope.2019.8905682","url":null,"abstract":"Today's power systems are strongly nonlinear and are becoming more complex with the large penetration of power-electronics interfaced generators. Conventional Linear Modal Analysis does not adequately study such a system with complex nonlinear behavior. Inclusion of higher-order terms in small-signal (modal) analysis associated with the Normal Form theory proposes a nonlinear modal analysis as an efficient way to improve the analysis. However, heavy computations involved make Normal Form method tedious, and impracticable for large power system application. In this paper, we present an efficient and speedy approach for obtaining the required nonlinear coefficients of the nonlinear equations modelling of a power system, without actually going through all the usual high order differentiation involved in Taylor series expansion. The method uses eigenvectors to excite the system modes independently which lead to formulation of linear equations whose solution gives the needed coefficients. The proposed method is demonstrated on the conventional IEEE 9-bus system and 68-bus New England/New York system.","PeriodicalId":305933,"journal":{"name":"2019 IEEE PES Innovative Smart Grid Technologies Europe (ISGT-Europe)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114819720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}