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Gómez, F. J., Vanfretti, L., Aguilera, M. & Olsen, S. (2019). CIM-2-mod: A CIM to modelica mapping and model-2-model transformation engine. SoftwareX, 9, 161-167
Open this publication in new window or tab >>CIM-2-mod: A CIM to modelica mapping and model-2-model transformation engine
2019 (English)In: SoftwareX, ISSN 2352-7110, Vol. 9, p. 161-167Article in journal (Refereed) Published
Abstract [en]

New requirement on power systems analysis tools consider information exchange for both steady-state and system dynamics information. New European regulations on information exchange power system dynamic simulations now require coordinating TSOs operations under different scenarios, some of which require to assess the dynamic behavior of power systems under a vast array of contingencies. As a mean to comply with these regulations and to advance the state-of-the-art, this work describes the software architecture of a Model-To-Model (M2M) transformation tool to create power system dynamic models using Modelica components by linking it to data from the Common Information Model (CIM). This software architecture is conceived to combine the CIM standard language with the Modelica standardized language, and to provide a Free/LibreOpen Source Software (FLOSS) CIM-compliant unambiguous power system modeling solution considering both steady-state and dynamic model representations of the electrical grid.

Keywords
Common Information Model, CIM, Model transformation, Information modeling, Modelica, OpenIPSL, Electrical Power Grid, Power System Modeling, Power System Dynamics, Power System Simulation
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Electrical Engineering; Computer Science
Identifiers
urn:nbn:se:kth:diva-244471 (URN)10.1016/j.softx.2019.01.013 (DOI)000466818600025 ()2-s2.0-85061445655 (Scopus ID)
Note

QC 20190301

Available from: 2019-02-21 Created: 2019-02-21 Last updated: 2022-06-26Bibliographically approved
Angioni, A., Lu, S., Hooshyar, H., Cairo, I., Repo, S., Ponci, F., . . . Garcia, C. (2018). A distributed automation architecture for distribution networks, from design to implementation. Sustainable Energy, Grids and Networks, 15, 3-13
Open this publication in new window or tab >>A distributed automation architecture for distribution networks, from design to implementation
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2018 (English)In: Sustainable Energy, Grids and Networks, E-ISSN 2352-4677, Vol. 15, p. 3-13Article in journal (Refereed) Published
Abstract [en]

With the current increase of distributed generation in distribution networks, line congestions and PQ issues are expected to increase. The smart grid may effectively coordinate DER, only when supported by a comprehensive architecture for automation. In IDE4L project such architecture is designed based on monitoring, control and business use cases. The IDE4L instance of SGAM architecture is derived and explained in details. The automation actor are specified in terms of interfaces, database and functions. The division in these three layers boosted the implementation phase as dedicated interfaces, databases or application has been developed in a modular way and can be installed in different HW/SW. Some implementation instances are presented and the main output of the architecture is discussed with regards to some indexes as communication traffic and level of distribution of automation functions.

Place, publisher, year, edition, pages
Elsevier, 2018
Keywords
Architecture, Smart grid, Distribution system
National Category
Energy Systems
Identifiers
urn:nbn:se:kth:diva-206223 (URN)10.1016/j.segan.2017.04.001 (DOI)000445025700002 ()2-s2.0-85020176163 (Scopus ID)
Funder
StandUp
Note

QC 20181002

Available from: 2017-04-28 Created: 2017-04-28 Last updated: 2022-07-11Bibliographically approved
Gómez, F. J., Vanfretti, L. & Olsen, S. (2018). CIM-Compliant Power System Dynamic Model-to-Model Transformation and Modelica Simulation. IEEE Transactions on Industrial Informatics, 14(9), 3989-3996, Article ID 8231176.
Open this publication in new window or tab >>CIM-Compliant Power System Dynamic Model-to-Model Transformation and Modelica Simulation
2018 (English)In: IEEE Transactions on Industrial Informatics, ISSN 1551-3203, E-ISSN 1941-0050, Vol. 14, no 9, p. 3989-3996, article id 8231176Article in journal (Refereed) Published
Abstract [en]

European regulations on information exchange have put new requirements on analysis tools, the main one being the adoption of the IEC Common Information Model (CIM) that may help interoperability across applications. This paper proposes the use of Model-Driven Software Engineering (MDSE) methods to meet these new requirements. Specifically, this paper shows how to apply Model-to-Model (M2M) transformations. The M2M method presented herein allows to work directly with the information and mathematical description and computer implementation of dynamic models, independent from specific analysis tools. The M2M method proposed requires the development of a mapping between CIM/UML and the Modelica language, which allows to derive Modelica models of physical power systems for dynamic simulations. 

Place, publisher, year, edition, pages
IEEE, 2018
Keywords
CIM, UML, SysML, Information Exchange, Information Modeling, Power Systems Dynamics, Modelica, OpenIPSL
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Electrical Engineering
Identifiers
urn:nbn:se:kth:diva-221663 (URN)10.1109/TII.2017.2785439 (DOI)000443994500020 ()2-s2.0-85040085113 (Scopus ID)
Funder
EU, FP7, Seventh Framework Programme, 76156
Note

QC 20180119

Available from: 2018-01-19 Created: 2018-01-19 Last updated: 2022-06-26Bibliographically approved
Vahdati, P. M., Vanfretti, L., Amini, M. H. & Kazemi, A. (2018). Hopf Bifurcation Control of Power Systems Nonlinear Dynamics Via a Dynamic State Feedback Controller - Part II: Performance Evaluation. In: 2018 IEEE POWER & ENERGY SOCIETY GENERAL MEETING (PESGM): . Paper presented at IEEE-Power-and-Energy-Society General Meeting (PESGM), AUG 05-10, 2018, Portland, OR. Institute of Electrical and Electronics Engineers (IEEE)
Open this publication in new window or tab >>Hopf Bifurcation Control of Power Systems Nonlinear Dynamics Via a Dynamic State Feedback Controller - Part II: Performance Evaluation
2018 (English)In: 2018 IEEE POWER & ENERGY SOCIETY GENERAL MEETING (PESGM), Institute of Electrical and Electronics Engineers (IEEE) , 2018Conference paper, Published paper (Refereed)
Abstract [en]

This is the second part of a two-part paper presenting a dynamic state feedback control law that guarantees the elimination of Hopf bifurcations before the occurrence of a saddle-node bifurcation. In Part I, the mathematical representation of the system's dynamics, Hopf, and Saddle-Node bifurcation theorems, and the state feedback controller design were presented. In this part, to illustrate the system analysis methodology, control design, and to carry out performance evaluation of the controller, both single-machine and multimachine power systems are analyzed. To highlight the effect of saturation phenomena, bifurcation analyses are performed before and after detailed modeling of synchronous generator saturation, for the single-machine power system case. The multimachine case is used to illustrate the scalability and applicability of the method to generic power networks.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2018
Series
IEEE Power and Energy Society General Meeting PESGM, ISSN 1944-9925
National Category
Mechanical Engineering
Identifiers
urn:nbn:se:kth:diva-244575 (URN)10.1109/PESGM.2018.8586591 (DOI)000457893903070 ()
Conference
IEEE-Power-and-Energy-Society General Meeting (PESGM), AUG 05-10, 2018, Portland, OR
Note

QC 20190308

Available from: 2019-03-08 Created: 2019-03-08 Last updated: 2022-06-26Bibliographically approved
Gómez, F. J., Aguilera, M., Vanfretti, L. & Olsen, S. H. (2018). Multi-Domain Semantic Information and Physical Behavior Modeling of Power Systems and Gas Turbines Expanding the Common Information Model. IEEE Access
Open this publication in new window or tab >>Multi-Domain Semantic Information and Physical Behavior Modeling of Power Systems and Gas Turbines Expanding the Common Information Model
2018 (English)In: IEEE Access, E-ISSN 2169-3536Article in journal (Refereed) Published
Abstract [en]

The rapid increase of Intermittent Energy Resources (IER) there is a need to have dispatchable production available to ensure secure operation and increase opportunity for energy system flexibility. Gas turbine-based power plants offer flexible operation that is being improved with new technology advancements. Those plants provide in general, quick start together with significant ramping capability, which can be exploited to balance IERs. Consequently, to understand this potential source of flexibility, better models for gas turbines are required for power systems studies and analysis. In this work both the required semantic information and physical behavior models of such multi-domain systems are considered. First, UML class diagrams and RDF schemas based on the Common Information Model (CIM) standards are used to describe the semantic information of the electrical power grid. An extension that exploits the ISO 15926 standard is herein proposed to derive the multi-domain semantics required by integrated electrical power grid with detailed gas turbine dynamic models. Second, the Modelica language is employed to create the equation-based models which represent the behavior of a multi-domain physical system. A comparative simulation analysis between the power system domain model and the multi-domain model has been performed. Some differences between the turbine dynamics representation of the commonly used GGOV1 standard model and a more detailed gas turbine model are shown.

Place, publisher, year, edition, pages
IEEE, 2018
Keywords
CIM, Cyber-Physical Systems, Dynamic Simulation, Equation-Based Modeling, IEC 61970, Information Modeling, ISO 15926, Modelica, Power Systems Simulation, Power Systems Modeling
National Category
Computer Systems Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Electrical Engineering
Identifiers
urn:nbn:se:kth:diva-239572 (URN)10.1109/ACCESS.2018.2882311 (DOI)000454057400001 ()2-s2.0-85057145801 (Scopus ID)
Note

QC 20181217

Available from: 2018-11-26 Created: 2018-11-26 Last updated: 2022-06-26Bibliographically approved
Almas, M. S., Baudette, M. & Vanfretti, L. (2018). Utilizing synchrophasor-based supplementary damping control signals in conventional generator excitation systems. Electric power systems research, 157, 157-167
Open this publication in new window or tab >>Utilizing synchrophasor-based supplementary damping control signals in conventional generator excitation systems
2018 (English)In: Electric power systems research, ISSN 0378-7796, E-ISSN 1873-2046, Vol. 157, p. 157-167Article in journal (Refereed) Published
Abstract [en]

A supplementary function of Excitation Control Systems (ECSs) for synchronous generators is that of a Power System Stabilizer (PSS). The PSS implementation in these ECSs only allows the use of a limited type of pre-defined local input measurements and built-in PSS algorithms. To adapt existing ECSs to take advantage of synchrophasors technology, this paper proposes and implements a prototype wide-area damping controller (WADC) that provides synchrophasor-based damping input signals to existing ECSs. The developed WADC comprise (i) a real-time mode estimation module, (ii) synchrophasor’s communication latency computation module, and (iii) phasor-based oscillation damping algorithm executing in a real-time hardware prototype controller.

Through Real-Time Hardware-in-the-Loop (RT-HIL) simulations, it is demonstrated that synchrophasor-based damping signals from the WADC can be utilized together with a commercial ECS, thus providing new options for selection of the best feedback signal for oscillation damping.

Place, publisher, year, edition, pages
Elsevier, 2018
Keywords
Damping control; Excitation Control System; Latency compensation; Phasor measurement units; Power System Stabilizer; Real-Time Hardware-in-the-Loop simulation; Synchrophasors
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Electrical Engineering
Identifiers
urn:nbn:se:kth:diva-220706 (URN)10.1016/j.epsr.2017.12.004 (DOI)000425203500016 ()2-s2.0-85039419939 (Scopus ID)
Note

QC 20180108

Available from: 2018-01-03 Created: 2018-01-03 Last updated: 2024-03-15Bibliographically approved
Almas, M. S., Vanfretti, L., Singh, R. S. & Jonsdottir, G. M. (2018). Vulnerability of Synchrophasor-based WAMPAC Applications’ to Time Synchronization Spoofing. IEEE Transactions on Smart Grid, 9(5), 4601-4612
Open this publication in new window or tab >>Vulnerability of Synchrophasor-based WAMPAC Applications’ to Time Synchronization Spoofing
2018 (English)In: IEEE Transactions on Smart Grid, ISSN 1949-3053, E-ISSN 1949-3061, Vol. 9, no 5, p. 4601-4612Article in journal (Refereed) Published
Abstract [en]

This paper experimentally assesses the impact of time synchronization spoofing attacks (TSSA) on synchrophasor-based Wide-Area Monitoring, Protection and Control applications. Phase Angle Monitoring (PAM), anti-islanding protection and power oscillation damping applications are investigated. TSSA are created using a real-time IRIG-B signal generator and power system models are executed using a real-time simulator with commercial phasor measurement units (PMUs) coupled to them as hardware-in-the-loop. Because PMUs utilize time synchronization signals to compute synchrophasors, an error in the PMUs’ time input introduces a proportional phase error in the voltage or current phase measurements provided by the PMU. The experiments conclude that a phase angle monitoring application will show erroneous power transfers, whereas the anti-islanding protection mal-operates and the damping controller introduces negative damping in the system as a result of the time synchronization error incurred in the PMUs due to TSSA.The proposed test-bench and TSSA approach can be used to investigate the impact of TSSA on any WAMPAC application and to determine the time synchronization error threshold that can be tolerated by these WAMPAC applications.

Place, publisher, year, edition, pages
IEEE, 2018
Keywords
Phasor measurement unit (PMU), power system protection, smart grid, spoofing, synchrophasors, time synchronization attack
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Electrical Engineering
Identifiers
urn:nbn:se:kth:diva-201215 (URN)10.1109/TSG.2017.2665461 (DOI)000443200700060 ()2-s2.0-85052748958 (Scopus ID)
Note

QC 20211129

Available from: 2017-02-09 Created: 2017-02-09 Last updated: 2024-03-15Bibliographically approved
Haddadi, A., Hooshyar, H., Mahseredjian, J., Dufou, C. & Vanfretti, L. (2017). A first step towards the implementation and software-to-software validation of an active distribution network model. In: : . Paper presented at International Conference on Power Systems Transients (IPST2017) in Seoul, Republic of Korea June 26-29, 2017. IPST 2017
Open this publication in new window or tab >>A first step towards the implementation and software-to-software validation of an active distribution network model
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2017 (English)Conference paper, Published paper (Refereed)
Place, publisher, year, edition, pages
IPST 2017, 2017
National Category
Engineering and Technology
Identifiers
urn:nbn:se:kth:diva-208408 (URN)
Conference
International Conference on Power Systems Transients (IPST2017) in Seoul, Republic of Korea June 26-29, 2017
Note

QC 20170627

Available from: 2017-06-07 Created: 2017-06-07 Last updated: 2022-06-27Bibliographically approved
Almas, M. S. & Vanfretti, L. (2017). A method exploiting direct communication between phasor measurement units for power system wide-area protection and control algorithms. MethodsX, 4, 346-359
Open this publication in new window or tab >>A method exploiting direct communication between phasor measurement units for power system wide-area protection and control algorithms
2017 (English)In: MethodsX, ISSN 1258-780X, E-ISSN 2215-0161, Vol. 4, p. 346-359Article in journal (Refereed) Published
Abstract [en]

Synchrophasor measurements from Phasor Measurement Units (PMUs) are the primary sensors used to deploy Wide-Area Monitoring, Protection and Control (WAMPAC) systems. PMUs stream out synchrophasor measurements through the IEEE C37.118.2 protocol using TCP/IP or UDP/IP. The proposed method establishes a direct communication between two PMUs, thus eliminating the requirement of an intermediate phasor data concentrator, data mediator and/or protocol parser and thereby ensuring minimum communication latency without considering communication link delays. This method allows utilizing synchrophasor measurements internally in a PMU to deploy custom protection and control algorithms. These algorithms are deployed using protection logic equations which are supported by all the PMU vendors. Moreover, this method reduces overall equipment cost as the algorithms execute internally in a PMU and therefore does not require any additional controller for their deployment. The proposed method can be utilized for fast prototyping of wide-area measurements based protection and control applications. The proposed method is tested by coupling commercial PMUs as Hardware-in-the-Loop (HIL) with Opal-RT’s eMEGAsim Real-Time Simulator (RTS). As illustrative example, anti-islanding protection application is deployed using proposed method and its performance is assessed. The essential points in the method are:

•  Bypassing intermediate phasor data concentrator or protocol parsers as the synchrophasors are communicated directly between the PMUs (minimizes communication delays).

•  Wide Area Protection and Control Algorithm is deployed using logic equations in the client PMU, therefore eliminating the requirement for an external hardware controller (cost curtailment)

•  Effortless means to exploit PMU measurements in an environment familiar to protection engineers

Place, publisher, year, edition, pages
Elsevier, 2017
Keywords
IEEE C37.118; Phasor Measurement Unit (PMU); Phasor Data Concentrator (PDC); Smart grid; Synchrophasors; Wide Area Monitoring Protection and Control (WAMPAC)
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Electrical Engineering
Identifiers
urn:nbn:se:kth:diva-215753 (URN)10.1016/j.mex.2017.10.002 (DOI)000419836300041 ()29062720 (PubMedID)2-s2.0-85031720126 (Scopus ID)
Projects
Strongrid, Nordic Energy Research
Note

QC 20171023

Available from: 2017-10-18 Created: 2017-10-18 Last updated: 2024-01-18Bibliographically approved
Hooshyar, H. & Vanfretti, L. (2017). A SGAM-based architecture for synchrophasor applications facilitating TSO/DSO interactions. In: 2017 IEEE Power and Energy Society Innovative Smart Grid Technologies Conference, ISGT 2017: . Paper presented at 2017 IEEE Power and Energy Society Innovative Smart Grid Technologies Conference, ISGT 2017; Washington; United States; 23 April 2017 through 26 April 2017. IEEE, Article ID 8085977.
Open this publication in new window or tab >>A SGAM-based architecture for synchrophasor applications facilitating TSO/DSO interactions
2017 (English)In: 2017 IEEE Power and Energy Society Innovative Smart Grid Technologies Conference, ISGT 2017, IEEE, 2017, article id 8085977Conference paper, Published paper (Refereed)
Abstract [en]

Distribution grid dynamics are becoming increasingly complex due to the transition of these networks from passive to active networks. This transition requires increasing the observability and awareness of the interactions between Transmission and Distribution (T&D) grids, particularly to guarantee adequate operational security. As part of the work carried out in the EU-funded IDE4L project, a specific use case, containing PMU-based monitoring functions, has been defined to support the architecture design of a distribution grid automation system. As a result, the architecture can accommodate for synchrophasor applications that provide key dynamic information extraction and exchange between DSO and TSO. This paper presents the use case and the portion of the IDE4L architecture that accommodates for scenarios that exploit synchrophasors for monitoring applications.

Place, publisher, year, edition, pages
IEEE, 2017
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:kth:diva-202196 (URN)10.1109/ISGT.2017.8085977 (DOI)000417427900023 ()2-s2.0-85040194354 (Scopus ID)9781538628904 (ISBN)
Conference
2017 IEEE Power and Energy Society Innovative Smart Grid Technologies Conference, ISGT 2017; Washington; United States; 23 April 2017 through 26 April 2017
Funder
StandUp
Note

QC 20170628

Available from: 2017-02-17 Created: 2017-02-17 Last updated: 2022-06-27Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-4125-1055

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