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  • 1.
    Firouzi, Seyed Reza
    et al.
    KTH, School of Electrical Engineering (EES), Electric power and energy systems.
    Hooshyar, Hossein
    KTH, School of Electrical Engineering (EES), Electric power and energy systems.
    Mahmood, Farhan
    KTH, School of Electrical Engineering (EES), Electric power and energy systems.
    Vanfretti, Luigi
    KTH, School of Electrical Engineering (EES), Electric power and energy systems.
    An IEC 61850-90-5 gateway for IEEE C37.118.2 synchrophasor data transfer2016Conference paper (Refereed)
  • 2.
    Firouzi, Seyed Reza
    et al.
    KTH, School of Electrical Engineering (EES), Electric power and energy systems.
    Hooshyar, Hossein
    KTH, School of Electrical Engineering (EES), Electric Power Systems.
    Mahmood, Farhan
    KTH, School of Electrical Engineering (EES), Electric Power Systems.
    Vanfretti, Luigi
    KTH, School of Electrical Engineering (EES), Electric Power Systems.
    The role of communication standards in the active network management2015Conference paper (Refereed)
  • 3.
    Firouzi, Seyed Reza
    et al.
    KTH, School of Electrical Engineering (EES), Electric Power and Energy Systems.
    Vanfretti, Luigi
    KTH, School of Electrical Engineering (EES), Electric Power and Energy Systems. KTH The Royal Institute of Technology.
    Ruiz-Alvarez, A.
    Mahmood, Farhan
    KTH, School of Electrical Engineering (EES), Electric Power and Energy Systems. KTH The Royal Institute of Technology.
    Hooshyar, Hossein
    KTH, School of Electrical Engineering (EES), Electric Power and Energy Systems. KTH The Royal Institute of Technology.
    Cairo, I.
    An IEC 61850-90-5 gateway for IEEE C37.118.2 synchrophasor data transfer2016In: IEEE Power and Energy Society General Meeting, IEEE, 2016Conference paper (Refereed)
    Abstract [en]

    This work describes the implementation and validation of a library named Khorjin to receive and parse synchrophasor data from a PμPDC based on IEEE C37.118.2 protocol, map it to the IEC 61850 data model and transmit the synchrophasor data through either Routed-Sampled Value or Routed-GOOSE services defined in the IEC 61850-90-5 protocol. In addition, the library is capable of acting as the receiver and parser of IEC 61850-90-5 messages, extracting raw synchrophasor data and feeding to subscriber applications. The functionality of the Khorjin library is validated in a Real-Time Hardware-in-the-Loop (HIL) simulation environment to asses its conformance to the functional requirements of the IEC 61850-90-5 standard.

  • 4.
    Firouzi, Seyed Reza
    et al.
    KTH, School of Electrical Engineering (EES), Electric Power and Energy Systems. SmarTS Lab.
    Vanfretti, Luigi
    KTH, School of Electrical Engineering (EES), Electric Power and Energy Systems. SmarTS Lab.
    Ruiz-Alvarez, Albert
    Catalonia Institute for Energy Research (IREC), Barcelona, Spain.
    Hooshyar, Hossein
    KTH, School of Electrical Engineering (EES), Electric Power and Energy Systems. SmarTS Lab.
    Mahmood, Farhan
    KTH, School of Electrical Engineering (EES), Electric Power and Energy Systems. SmarTS Lab.
    Interpreting and Implementing IEC 61850-90-5 Routed-Sampled Value and Routed-GOOSE Protocols for IEEE C37.118.2 Compliant Wide-Area Synchrophasor Data Transfer2016In: Electric power systems research, ISSN 0378-7796, E-ISSN 1873-2046, Vol. 144, p. 255-267Article in journal (Refereed)
    Abstract [en]

    Flexibility and adaptability requirements of future electric power grids for integrating DERs call for the developmentof Wide-Area Monitoring, Protection And Control (WAMPAC) applications, utilizing synchrophasor measurementsprovided by the Phasor Measurement Units (PMUs).IEEE C37.118 is the most utilized protocol for real-time exchange of synchronized phasor measurement data. In orderto full some gaps not addressed in IEEE C37.118, and also to harmonize with the IEC 61850 power utility automationstandard, the IEC 61850-90-5 technical report has been developed. IEC TR 61850-90-5 introduces a mechanism fortransfer of digital states and time synchronized phasor measurement data over wide-area networks between PhasorMeasurement Units (PMUs), Phasor Data Concentrators (PDCs) and WAMPAC applications in the context of IEC61850.This work interprets the IEEE C37.118.2 and IEC 61850-90-5 Routed-Sampled Value and Routed-GOOSE protocolsand describes the design and implementation of a library named Khorjin with the functionality of (1) an IEEE C37.118.2to IEC 61850-90-5 gateway and protocol converter and, (2) an IEC 61850-90-5 subscriber and trac parser.The main contribution of this work is the development of Khorjin library using only standard C libraries (i.e.independent from any operating system). This is allowing the use of the library in dierent platforms.The design requirements and functionality of the Khorjin library has been tested in the KTH SmarTS Lab Real-TimeHardware-in-the-Loop (HIL) simulation environment to assess its conformance to the functional requirements of IEEEC37.118.2 and IEC 61850-90-5 standards.

  • 5.
    Hooshyar, Hossein
    et al.
    KTH, School of Electrical Engineering (EES), Electric Power Systems.
    Mahmood, Farhan
    KTH, School of Electrical Engineering (EES), Electric Power Systems.
    Vanfretti, Luigi
    KTH, School of Electrical Engineering (EES), Electric Power Systems.
    HIL simulation of a distribution system reference model2014In: 11th Nordic Conference on Electricity Distribution System Management and Development (NORDAC), Statnett , 2014Conference paper (Refereed)
  • 6.
    Hooshyar, Hossein
    et al.
    KTH, School of Electrical Engineering (EES), Electric Power Systems.
    Mahmood, Farhan
    KTH, School of Electrical Engineering (EES), Electric Power Systems.
    Vanfretti, Luigi
    KTH, School of Electrical Engineering (EES), Electric Power Systems.
    Specification and implementation of a reference grid for distribution network dynamic studies2014In: 2014 IEEE PES General Meeting | Conference & Exposition, IEEE , 2014, p. 1-5Conference paper (Refereed)
    Abstract [en]

    This paper presents the IDE4L project reference grid model developed to perform real-time hardware-in-the-loop simulations. The simulations will be carried out to study distribution network dynamics and to evaluate the techniques developed in IDE4L project for TSO/DSO interactions. Performance of the grid model is shown by sample simulation results.

  • 7.
    Hooshyar, Hossein
    et al.
    KTH, School of Electrical Engineering (EES), Electric Power Systems.
    Mahmood, Farhan
    KTH, School of Electrical Engineering (EES), Electric Power Systems.
    Vanfretti, Luigi
    KTH, School of Electrical Engineering (EES), Electric Power Systems. Statnett SF, Norway.
    Baudette, Maxime
    KTH, School of Electrical Engineering (EES), Electric Power Systems.
    Specification, implementation, and hardware-in-the-loop real-time simulation of an active distribution grid2015In: Sustainable Energy, Grids and Networks, ISSN 0284-4354, E-ISSN 2352-4677, Vol. 3Article in journal (Refereed)
    Abstract [en]

    This paper presents the IDE4L project reference grid model developed to serve as a benchmark for studies on distribution grid dynamics within the project. The paper demonstrates a MATLAB/Simulink implementation of the reference grid to be used in real-time hardware-in-the-loop simulations. The simulations will be carried out to study distribution grid dynamics and to evaluate the techniques developed in IDE4L project for TSO/DSO interactions. Performance of the grid model is shown through sample real-time simulation results and a hardware-in-the-loop setup for PMU-based grid monitoring applications.

  • 8.
    Hooshyar, Hossein
    et al.
    KTH, School of Electrical Engineering (EES), Electric Power and Energy Systems.
    Vanfretti, Luigi
    KTH, School of Electrical Engineering (EES), Electric Power and Energy Systems.
    Mahmood, Farhan
    KTH, School of Electrical Engineering (EES), Electric Power and Energy Systems.
    Singh, Ravi Shankar
    KTH.
    Singh, Narender
    KTH.
    Bidadfar, Ali
    KTH.
    Firouzi, Seyed Reza
    KTH, School of Electrical Engineering (EES), Electric Power and Energy Systems.
    Synchrophasor applications facilitating interactions in transmission and distribution operations2017In: 2017 IEEE Manchester PowerTech, Powertech 2017, IEEE, 2017, article id 7980917Conference paper (Refereed)
    Abstract [en]

    Dynamics of distribution grids are becoming more and more complex to analyze due to their transition from passive networks to active ones. This has necessitated the increase of observability between Transmission and Distribution (T&D) grids for operational security and real-time security assessment. This paper presents an overview of the IDE4L project, funded by the European Commission, where a system of PMU data-based monitoring applications has been developed to facilitate TSO-DSO interactions.

  • 9.
    Iqbal, Asif
    et al.
    KTH, School of Electrical Engineering and Computer Science (EECS), Network and Systems engineering.
    Mahmood, Farhan
    KTH, School of Electrical Engineering and Computer Science (EECS), Electric Power and Energy Systems.
    Ekstedt, Mathias
    KTH, School of Electrical Engineering and Computer Science (EECS), Network and Systems engineering.
    An Experimental Forensic Test bed: Attack-based Digital Forensic Analysis of WAMPAC Applications2018Conference paper (Refereed)
    Abstract [en]

    The global trend is to go digital, in other words go 'smart'. Like the rest of the world getting smarter, so is the power sector hence the term smart power grids and substations. Such capability comes at a price, in this case increasing risk of potential cyber threats to substations. With all such potential risks, it is important that we are able to trace back and attribute any potential threats to its root. In this paper, we're exploring substations to find potential evidences in case a forensic investigation becomes a necessity. Moreover, a forensic experimental test bed is proposed for digital forensic analysis. Finally, a mapping of attack-based forensic evidences is presented.

  • 10.
    Iqbal, Asif
    et al.
    KTH, School of Electrical Engineering and Computer Science (EECS), Network and Systems Engineering.
    Mahmood, Farhan
    KTH, School of Electrical Engineering and Computer Science (EECS), Electric Power and Energy Systems.
    Ekstedt, Mathias
    KTH, School of Electrical Engineering and Computer Science (EECS), Network and Systems Engineering.
    Digital Forensic Analysis of Industrial Control Systems Using Sandboxing: A Case of WAMPAC Applications in the Power Systems2019In: Energies, ISSN 1996-1073, E-ISSN 1996-1073, Vol. 12, no 13, article id 2598Article in journal (Refereed)
    Abstract [en]

    In today's connected world, there is a tendency of connectivity even in the sectors which conventionally have been not so connected in the past, such as power systems substations. Substations have seen considerable digitalization of the grid hence, providing much more available insights than before. This has all been possible due to connectivity, digitalization and automation of the power grids. Interestingly, this also means that anybody can access such critical infrastructures from a remote location and gone are the days of physical barriers. The power of connectivity and control makes it a much more challenging task to protect critical industrial control systems. This capability comes at a price, in this case, increasing the risk of potential cyber threats to substations. With all such potential risks, it is important that they can be traced back and attributed to any potential threats to their roots. It is extremely important for a forensic investigation to get credible evidence of any cyber-attack as required by the Daubert standard. Hence, to be able to identify and capture digital artifacts as a result of different attacks, in this paper, the authors have implemented and improvised a forensic testbed by implementing a sandboxing technique in the context of real time-hardware-in-the-loop setup. Newer experiments have been added by emulating the cyber-attacks on WAMPAC applications, and collecting and analyzing captured artifacts. Further, using sandboxing for the first time in such a setup has proven helpful.

  • 11.
    Iqbal, Asif
    et al.
    KTH, School of Electrical Engineering and Computer Science (EECS), Network and Systems Engineering.
    Mahmood, Farhan
    KTH, School of Electrical Engineering and Computer Science (EECS), Electric Power and Energy Systems.
    Shalaginov, Andrii
    Department of Information Security & Communication Technology, Norwegian University of Science and Technology, Norway.
    Ekstedt, Mathias
    KTH, School of Electrical Engineering and Computer Science (EECS), Network and Systems Engineering.
    Identification of Attack-based Digital Forensic Evidences for WAMPAC Systems2018In: Proceedings - 2018 IEEE International Conference on Big Data, Big Data 2018, Seattle, Washington, USA: IEEE conference proceedings, 2018, p. 3078-3086, article id 8622550Conference paper (Refereed)
    Abstract [en]

    Power systems domain has generally been very conservative in terms of conducting digital forensic investigations, especially so since the advent of smart grids. This lack of research due to a multitude of challenges has resulted in absence of knowledge base and resources to facilitate such an investigation. Digitalization in the form of smart grids is upon us but in case of cyber-attacks, attribution to such attacks is challenging and difficult if not impossible. In this research, we have identified digital forensic artifacts resulting from a cyber-attack on Wide Area Monitoring, Protection and Control (WAMPAC) systems, which will help an investigator attribute an attack using the identified evidences. The research also shows the usage of sandboxing for digital forensics along with hardware-in-the-loop (HIL) setup. This is first of its kind effort to identify and acquire all the digital forensic evidences for WAMPAC systems which will ultimately help in building a body of knowledge and taxonomy for power system forensics.

  • 12.
    Iqbal, Asif
    et al.
    KTH, School of Electrical Engineering and Computer Science (EECS), Network and Systems Engineering.
    Shalaginov, Andrii
    Department of Information Security & Communication Technology, Norwegian University of Science and Technology, Norway.
    Mahmood, Farhan
    KTH, School of Electrical Engineering and Computer Science (EECS), Electric Power and Energy Systems.
    Intelligent analysis of digital evidences in large-scale logs in power systems attributed to the attacks2018In: Proceedings - 2018 IEEE International Conference on Big Data, Big Data 2018, 2018, p. 3087-3092Conference paper (Refereed)
    Abstract [en]

    Smart grid improves and revolutionizes the way how energy is generated, distributed and consumed. Despite utilization of such technologies for better life of end-users and communities, there might be outlier events happening that will introduce disturbance to the smart grids. To mitigate impact from such events in power grid, particularly in Wide Area Monitoring Protection and Control (WAMPAC) has been introduced for mitigation and prevention of large disruption and extreme events. Large network of interconnected devices is being monitored through WAMPAC sub-system to avoid major events with negative impact through analysis of system-wide contextual information. The assessment of the state is being made based on the data from Phasor Measurement Unit (PMUs) collected and processed in the Phasor Data Concentrator (PDC). There is an enormous amount of Machine-to-Machine (M2M) communication that the system has to analyze. However, blackout prediction and mitigation is done using measurements data and does not necessarily focus on more high level adversarial events. This paper proposes an ongoing research into timely detection of adversarial attack on the power grid.  During the experimental phase, authentication attack scenario was successfully executed on power substation setup. Further, framework for intelligent identification of digital evidences related to attack was suggested unveiling possibility for crime investigations preparedness.

  • 13.
    Mahmood, Farhan
    KTH, School of Electrical Engineering and Computer Science (EECS), Electric Power and Energy Systems.
    Synchrophasor based Steady State Model Synthesis of Active Distribution Networks2018Doctoral thesis, monograph (Other academic)
    Abstract [en]

    With the increased penetration of distributed energy resources (DERs) at lower voltage levels, distribution networks (DNs) are being transformed into active grids. This has led to a paradigm shift in the operation, planning and control of DNs. Traditional monitoring infrastructure is unlikely to satisfy the requirements that active distribution networks (ADNs) pose in terms of higher speed networking, time synchronization and signal resolution, precision and accuracy, scope, etc. As a result, high performance monitoring infrastructures are needed to fully utilize the potential of sensing devices at DNs, capable of monitoring ADNs in real-time. In this context, phasor measurement units (PMUs) have emerged as one of the most promising alternatives for ADNs monitoring in real-time.

    The focus of this thesis is to exploit PMU measurements to perform real-time steady state model synthesis (SSMS) of ADNs. To this end, methods for pre-processing PMU data are developed in this thesis. As the focus of this thesis is the development of a steady state PMU application, the methods presented herein extract the quasi-steady state component in PMU measurements and feeds them to the SSMS application. In addition, the methods are capable of filtering noise, compensating for missing data, and removing the outliers in PMU signals in real-time.

    The synthesis method can be applied to multiple sections of unbalanced ADNs requiring measurements from multiple PMUs. The proposed approach is generic and can be applied to any portion of a DN with any feeder configuration. The performance and the effectiveness of the proposed methodology have been illustrated in details by using real-time hardware-in-the-loop (HIL) experiments.

    A detailed sensitivity analysis of the SSMS application is performed in order to show how sensitive the output of the SSMS method is to changes in its inputs. An extended version of the total vector error (TVE) was developed as an evaluation metric. The location of PMUs, system operating point and the occurrence of different disturbances are considered when evaluating the SSMS method. The sensitivity analysis is performed through several case studies as discussed above.

    Finally, the thesis provides extensive experimental validation experiments on the SSMS application. Syncrophasor measurements acquired from real PMUs installed at an actual active distribution feeder in a university campus were used for this purpose. A detailed performance assessment of the SSMS method is conducted for different conditions. Additionally, a comprehensive analysis is performed to help power system operators to determine how to configure the SSMS application.

  • 14.
    Mahmood, Farhan
    et al.
    KTH, School of Electrical Engineering (EES), Electric Power and Energy Systems. KTH The Royal Institute of Technology.
    Hooshyar, Hossein
    KTH, School of Electrical Engineering (EES), Electric Power and Energy Systems. KTH The Royal Institute of Technology.
    Lavenius, Jan
    KTH, School of Electrical Engineering (EES), Electric Power and Energy Systems.
    Lund, Per
    Vanfretti, Luigi
    KTH, School of Electrical Engineering (EES), Electric Power and Energy Systems. KTH The Royal Institute of Technology.
    Real-time reduced steady state model synthesis of active distribution networks using PMU measurements2016In: IEEE Transactions on Power Delivery, ISSN 0885-8977, E-ISSN 1937-4208, Vol. 32, no 1, p. 546-555Article in journal (Refereed)
    Abstract [en]

    Due to the increase of generation sources in distribution networks, it is becoming more and more complex to develop and maintain models of these networks. Network operators need to determine reduced models of distribution networks to be used in grid management functions. This paper presents a novel method that synthesizes steady state models of unbalanced active distribution networks by the use of dynamic measurements (time series) from PMUs. As PMU measurements may contain errors and bad data, the paper presents the application of a Kalman Filter technique for real-time data processing. In addition, PMU data captures the power system’s response at different time-scales, which are generated by different types of power system events; the presented Kalman Filter has been improved to extract the steady state component of the PMU measurements to be fed to the steady state model synthesis application. Performance of the proposed methods has been assessed by real-time hardware-in-the-loop simulations on a sample distribution network.

  • 15.
    Mahmood, Farhan
    et al.
    KTH, School of Electrical Engineering (EES), Electric Power Systems.
    Hooshyar, Hossein
    KTH, School of Electrical Engineering (EES), Electric Power Systems.
    Vanfretti, Luigi
    KTH, School of Electrical Engineering (EES), Electric Power Systems. Statnett SF, Norway.
    A method for extracting steady state components from syncrophasor data using Kalman filters2015In: 2015 IEEE 15th International Conference on Environment and Electrical Engineering, EEEIC 2015 - Conference Proceedings, IEEE , 2015, p. 1498-1503Conference paper (Refereed)
    Abstract [en]

    Data from Phasor Measurement Units (PMUs) may be exploited to provide steady state information to the applications which require it. Raw PMU data is polluted with noise and cannot be directly fed to applications without adequate processing. This paper presents a method to extract steady state components from Syncrophasor data using Kalman Filters (KF). This method is capable of reducing the noise, to compensate for missing data and filtering of outliers in signals. The Residue in each KF iteration is computed. The measurement noise covariance matrix R is calculated by computing the variance of residue using rolling windows. The performance of presented method is evaluated by using PMU data generated from a Hardware-In-the-Loop (HIL) experimental setup.

  • 16.
    Mahmood, Farhan
    et al.
    KTH, School of Electrical Engineering (EES), Electric power and energy systems. KTH The Royal Institute of Technology.
    Hooshyar, Hossein
    KTH, School of Electrical Engineering (EES), Electric power and energy systems. KTH The Royal Institute of Technology.
    Vanfretti, Luigi
    KTH, School of Electrical Engineering (EES), Electric power and energy systems. KTH The Royal Institute of Technology.
    Extracting Steady State Components from Synchrophasor Data Using Kalman Filters2016In: Energies, ISSN 1996-1073, E-ISSN 1996-1073, Vol. 9Article in journal (Refereed)
    Abstract [en]

    Data from phasor measurement units (PMUs) may be exploited to provide steady state information to the applications which require it. As PMU measurements may contain errors and missing data, the paper presents the application of a Kalman Filter technique for real-time data processing. PMU data captures the power system’s response at different time-scales, which are generated by different types of power system events; the presented Kalman Filter methods have been applied to extract the steady state components of PMU measurements that can be fed to steady state applications. Two KF-based methods have been proposed, i.e., a windowing-based KF method and “the modified KF”. Both methods are capable of reducing noise, compensating for missing data and filtering outliers from input PMU signals. A comparison of proposed methods has been carried out using the PMU data generated from a hardware-in-the-loop (HIL) experimental setup. In addition, a performance analysis of the proposed methods is performed using an evaluation metric.

  • 17.
    Mahmood, Farhan
    et al.
    KTH, School of Electrical Engineering (EES), Electric power and energy systems.
    Hooshyar, Hossein
    KTH, School of Electrical Engineering (EES), Electric power and energy systems.
    Vanfretti, Luigi
    KTH, School of Electrical Engineering (EES), Electric Power Systems.
    Implementation of an architecture for steady state model synthesis of active distribution networks using syncrophasors2016Other (Refereed)
  • 18.
    Mahmood, Farhan
    et al.
    KTH, School of Electrical Engineering (EES), Electric Power and Energy Systems.
    Hooshyar, Hossein
    KTH, School of Electrical Engineering (EES), Electric Power and Energy Systems.
    Vanfretti, Luigi
    KTH, School of Electrical Engineering (EES), Electric Power Systems.
    Sensitivity Analysis of a PMU-Fed Steady State Model Synthesis Method for Active Distribution Networks2017In: 2017 IEEE POWER & ENERGY SOCIETY GENERAL MEETING, IEEE, 2017Conference paper (Refereed)
    Abstract [en]

    The purpose of this paper is to carry outsensitivityanalysisofa method that performssteady state model synthesis(SSMS)of active distribution networksusing SyncrophasorMeasurements.An extended version of the Total Vector Error (TVE) is used as a metric to evaluate how sensitive the output of the SSMS method is to the changesinthe inputsto the method.Location of PMUs in the system,system operating point,and occurrence of different disturbancesareconsideredas the input tothe SSMS method. The sensitivity analysis is performed through several case studieseach containing changesin one of the inputs.

  • 19.
    Mahmood, Farhan
    et al.
    KTH, School of Electrical Engineering (EES), Electric power and energy systems.
    Vanfretti, Luigi
    KTH, School of Electrical Engineering (EES), Electric power and energy systems. Statnett SF, Norway.
    Hooshyar, Hossein
    KTH, School of Electrical Engineering (EES), Electric power and energy systems.
    Detailed modeling of a photovoltaic system for distribution networks2014Conference paper (Refereed)
  • 20.
    Mahmood, Farhan
    et al.
    KTH, School of Electrical Engineering (EES), Electric Power Systems.
    Vanfretti, Luigi
    KTH, School of Electrical Engineering (EES), Electric Power Systems.
    Hooshyar, Hossein
    KTH, School of Electrical Engineering (EES), Electric Power Systems.
    Modeling of a detailed photovoltaic generation system for EMT-type simulation2014In: ENERGYCON 2014 - IEEE International Energy Conference, IEEE Computer Society, 2014, p. 916-921Conference paper (Refereed)
    Abstract [en]

    This article presents a detailed three-phase grid connected PV model which includes important control systems required for EMT-type simulation. A one diode model for the PV array is used to simulate environmental constraints such as solar irradiation. A detailed control system including dc voltage control, inner current control, MPPT and PWM control are implemented in order to simulate the model during steady state and dynamic conditions. The PV model is merged with a simple distribution network to investigate the PV's interaction with the AC grid. Several simulation scenarios are presented in order to validate the performance of the model.

  • 21.
    Mahmood, Farhan
    et al.
    KTH, School of Electrical Engineering and Computer Science (EECS), Electric Power and Energy Systems.
    Vanfretti, Luigi
    Rensselaer Polytech Inst, Dept Elect Comp & Syst Engn, Troy, NY 12180 USA..
    Pignati, Marco
    Ecole Polytech Fed Lausanne, Distributed Elect Syst Lab, CH-1015 Lausanne, Switzerland..
    Hooshyar, Hossein
    Rensselaer Polytech Inst, Dept Elect Comp & Syst Engn, Troy, NY 12180 USA..
    Sossan, Fabrizio
    Ecole Polytech Fed Lausanne, Distributed Elect Syst Lab, CH-1015 Lausanne, Switzerland..
    Paolone, Mario
    Ecole Polytech Fed Lausanne, Distributed Elect Syst Lab, CH-1015 Lausanne, Switzerland..
    Experimental Validation of a Steady State Model Synthesis Method for a Three-Phase Unbalanced Active Distribution Network Feeder2018In: IEEE Access, E-ISSN 2169-3536, Vol. 6, p. 4042-4053Article in journal (Refereed)
    Abstract [en]

    This paper presents the field validation of a method that performs steady-state model synthesis (SSMS) of active distribution networks using syncrophasor measurements. The validation is performed by applying the SSMS method on a real active distribution feeder network by utilizing the measurements from real phasor measurement units (PMUs) installed at the EPFL campus. An extended version of total vector error and a power flow comparison at the PMU buses are used as performance assessment metrics. A real-time hardware-in-the-loop simulations set up at the Distributed Energy System Laboratory is used for further performance assessment of the SSMS application. The effectiveness of the SSMS application is demonstrated by testing it extensively for several different case studies.

  • 22.
    Samadi, Afshin
    et al.
    KTH, School of Electrical Engineering (EES), Electric Power Systems.
    Eriksson, Robert
    KTH, School of Electrical Engineering (EES), Electric Power Systems.
    Jose, Della
    KTH, School of Electrical Engineering (EES), Electric Power Systems.
    Mahmood, Farhan
    KTH, School of Electrical Engineering (EES), Electric Power Systems.
    Ghandhari, Mehrdad
    KTH, School of Electrical Engineering (EES), Electric Power Systems.
    Söder, Lennart
    KTH, School of Electrical Engineering (EES), Electric Power Systems.
    Comparison of a Three-Phase Single-Stage PV System in PSCAD and PowerFactory2012In: Proceedings of the 2nd International Workshop on Integration of Solar Power into Power Systems, Energynautics GmbH , 2012, p. 237-244Conference paper (Refereed)
  • 23.
    Vanfretti, Luigi
    et al.
    KTH, School of Electrical Engineering (EES), Electric Power Systems.
    Hooshyar, Hossein
    KTH, School of Electrical Engineering (EES), Electric Power Systems.
    Mahmood, Farhan
    KTH, School of Electrical Engineering (EES), Electric Power Systems.
    Singh, Ravi Shankar
    KTH, School of Electrical Engineering (EES), Electric power and energy systems.
    Bidadfar, Ali
    KTH, School of Electrical Engineering (EES), Electric power and energy systems.
    Singh, Narender
    Synchrophasor applications for distribution networks enhancing T&D operation and information exchange2016Conference paper (Other academic)
  • 24.
    Vanfretti, Luigi
    et al.
    KTH, School of Electrical Engineering (EES), Electric Power and Energy Systems.
    Hooshyar, Hossein
    KTH, School of Electrical Engineering (EES), Electric Power and Energy Systems.
    Singh, Ravi Shankar
    Bidadfar, Ali
    KTH, School of Electrical Engineering (EES), Electric Power and Energy Systems.
    Mahmood, Farhan
    KTH, School of Electrical Engineering (EES), Electric Power and Energy Systems.
    Synchrophasor Applications for Distribution Networks, Supporting The IDE4L Use Case2017Conference paper (Refereed)
    Abstract [en]

    Distribution grid dynamics are becoming increasingly complex to analyze due to their transition from passive to active networks. This transition requires to increase 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 key dynamic information extraction and exchange between Distribution System Operator (DSO) and Transmission System Operator (TSO). This paper presents the use case and focuses on the technical aspects related to the development and implementation of the PMU-based monitoring functionalities.

  • 25.
    Vanfretti, Luigi
    et al.
    KTH.
    Hooshyar, Hossein
    KTH.
    Singh, Ravi Shankar
    KTH.
    Bidadfar, Ali
    KTH.
    Mahmood, Farhan
    KTH.
    Synchrophasor Applications for Distribution Networks, Supporting The IDE4L Use Case2017In: 2017 IEEE POWER & ENERGY SOCIETY GENERAL MEETING, IEEE , 2017Conference paper (Refereed)
    Abstract [en]

    Distribution grid dynamics are becoming increasingly complex to analyze due to their transition from passive to active networks. This transition requires to increase 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, 11 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 key dynamic information extraction and exchange between Distribution System Operator (DSO) and Transmission System Operator (TSO). This paper presents the use case and focuses on the technical aspects related to the development and implementation of the PMU-based monitoring functionalities.

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