| 1. |
- Al-Hammouri, A.T., et al.
(författare)
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Virtualization of synchronized phasor measurement units within real-time simulators for smart grid applications
- 2012
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Ingår i: Power and Energy Society General Meeting, 2012 IEEE. - : IEEE. - 9781467327275 ; , s. 6344949-
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Konferensbidrag (refereegranskat)abstract
- Synchronized phasor measurement units (PMUs) provide GPS-time tagged high-sampling rate positive-sequence voltage and current phasors. When placed in high-voltage substations in power networks, PMUs can provide real-time information that is necessary for the development of Smart Transmission Grid software applications for improving power system monitoring, control and protection. The development of these applications, particularly for use within control centers for on-line purposes, is limited by the availability of and access to real-time PMU data and other information. One attractive approach for application development is the use of real-time simulators to which PMUs can be interfaced as hardware-in-the-loop (HIL) devices to harvest PMU data. However, this approach has technical and economical limitations, which can be tackled by the virtualization of PMU devices. This article describes the development of an entirely software-based synchronized phasor measurement unit for use within real-time simulators that will allow the emulation of a large number of real-life PMUs, which in turn can be used for creating new phasor-based applications.
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| 2. |
- Al Karim, Miftah, et al.
(författare)
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Synchrophasor-based data mining for power system fault analysis
- 2012
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Ingår i: Innovative Smart Grid Technologies (ISGT Europe), 2012 3rd IEEE PES International Conference and Exhibition on. - : IEEE. - 9781467325974 ; , s. 6465843-
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Konferensbidrag (refereegranskat)abstract
- Phasor measurement units can provide high resolution and synchronized power system data, which can be effectively utilized for the implementation of data mining techniques. Data mining, based on pattern recognition algorithms can be of significant help for power system analysis, as high definition data is often complex to comprehend. In this paper three pattern recognition algorithms are applied to perform the data mining tasks. The deployment is carried out firstly for fault data classification, secondly for checking which faults are occurring more frequently and thirdly for identifying the root cause of a fault by clustering the parameters behind each scenario. For such purposes three algorithms are chosen, k-Nearest Neighbor, Naïve Bayes and the k-means Clustering.
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| 3. |
- Armendariz, Mikel, et al.
(författare)
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A co-simulation platform for medium/low voltage monitoring and control applications
- 2014
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Ingår i: 2014 IEEE PES Innovative Smart Grid Technologies Conference, ISGT 2014. - : IEEE conference proceedings. - 9781479936526 ; , s. 6816369-
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Konferensbidrag (refereegranskat)abstract
- The increasing demand for electricity and the penetration of renewable energy resources into the electrical grid are triggering the electric power system to undergo changes and complex modifications at high, medium and low voltage levels. There are large and complex projects such as Smart Grid Gotland to deploy solutions to address such challenges. However, there are several scenarios that could be more practical to be first studied via simulations. As such, the purpose of this paper is to propose and develop a co-simulation platform that allows performing real-time monitoring and control tests and simulations for MV/LV grids. This platform combines both electrical, and information and communication technology (ICT) infrastructure simulations. It consists of a real-time power system simulator (Opal-RT) connected to a communication network simulator (OPNET) through an automatic meter reading interface that is based on commercial off-the-shelf (COTS) and low cost devices such as Raspberry Pi and Arduino boards. The platform allows the analysis of realistic MV/LV grids and communication networks, and will facilitate the simulation and comparison of low voltage control strategies for real-time test scenarios that could be more complicated to test otherwise in real-life due to cost and complexity aspects , i.e., high power losses on the low voltage grid.
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| 4. |
- Babazadeh, Davood, et al.
(författare)
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A Platform for Wide Area Monitoring and Control System ICT Analysis and Development
- 2013
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Ingår i: 2013 IEEE Grenoble Conference PowerTech, POWERTECH 2013. - : IEEE. - 9781467356695
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Konferensbidrag (refereegranskat)abstract
- PMU-based Wide Area Monitoring and Control(WAMC) system is introduced to improve the monitoring ofpower grid across large geographic areas and control the gridusing more efficient and smart applications. The performance ofWAMC applications in real power system scenarios and impactof their supporting Information and Communication Technology(ICT) on the data quality can be quantified and analyzed bypseudo-real co-simulation test beds. The purpose of this study isto propose and develop a WAMC testing platform to facilitate thereal-time simulation of dynamic power grid, the ICTinfrastructure that overlays the grid and WAMS applications.The platform consists of OPNET, a powerful communicationnetwork emulator, connected to a real-time power systemsimulator through virtualized PMU device. The end pointstations such as Phasor Data Concentrator or PMU-basedapplications are also linked to the platform through OPNET’sreal-simulation gateway called SITL (System-In-The-Loop). Toassess the performance of the platform architecture, a case studyhas been performed with five PMUs which collect the data from apower model and deliver to PMU-based mode-estimationapplication over a typical communication network. In this study,the results explicitly intend to quantify the effect of networkprotocols on data delay.
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| 5. |
- Babazadeh, Davood, et al.
(författare)
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Implementation of agent-based power flow coordination in AC/DC grids using co-simulation platform
- 2014
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Ingår i: 2014 IEEE International Conference on Smart Grid Communications, SmartGridComm 2014. - 9781479949342 ; , s. 188-193
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Konferensbidrag (refereegranskat)abstract
- This paper presents work on the coordination of power sharing contribution of converters in an overlaid HVDC grid using a Multi-Agent System (MAS) approach. This approach is further implemented in a real-time co-simulation platform in order to study the proposed control scheme including the supporting information and communication Technology (ICT) systems. The platform consists of OPNET, a communication network simulator, connected to a real-time power system simulator through virtualized and real devices. Furthermore, the impact of different supporting system parameters such as bit-error rate has been studied using this real-time co-simulation platform.
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| 6. |
- Babazadeh, Davood, et al.
(författare)
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Real-Time Smart Grid Application Testing using OPNET SITL
- 2012
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Konferensbidrag (refereegranskat)abstract
- Phasor -based Wide Area Monitoring and Control (WAMC) system promise to improve the monitoring of power grid across large geographic areas and accordingly controlling grid in more efficient and intelligent ways. In order to have confidence on the correctness, performance and reliability of applications used in WAMC system in real world scenarios, pseudo-real test beds where the requirements for the applications and their supporting Information and Communication Technology (ICT) can be quantified and analyzed. In this paper, a WAMC system testing platform is proposed to facilitate the real-time simulation of dynamic power grid, the ICT infrastructure that overlays the grid and WAMC applications. The proposed platform consists of OPNET as a powerful communication network simulator connected to real-time power system simulator on one side through virtualized Phasor Measurement Unit device, and linked to end point stations such as Phasor Data Concentrator or application on the other side through OPNET’s real-simulation gateway. A set of proof of concept scenarios using this framework is presented.
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| 7. |
- Babazadeh, Davood, 1982-, et al.
(författare)
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Survey on the Factors Required in Design of Communication Architecture for Future DC grids
- 2013
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Ingår i: IFAC Proceedings Volumes (IFAC-PapersOnline). - 9783902823328 ; , s. 58-63
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Konferensbidrag (refereegranskat)abstract
- This paper aims first to survey various aspects of DC grids from grid topologies to TSOs structure which has been carried out in several studies, and second try to highlight the factors to be considered in the design of the universal communication architecture for DC grid control and protection purposes. The result of the survey will be used as the first step to introduce the possible communication solutions such as network and data transfer protocols in order to ensure the reliable data delivery in operation of multi-national DC grids.
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| 8. |
- Björkman, Gunnar, et al.
(författare)
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SCADA system architectures
- 2010
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- The aim of deliverable 2.3 in the VIKING is to catalogue architecture patterns or reference architectures, i.e. commonly deployed solutions, for SCADA systems. These patterns are represented as a set of descriptions that capture the vast majority of SCADA systems’ architecture on a high level. The patterns developed in this report focus on: - Software services in SCADA systems and software services which SCADA systems exchange data with. - Data flows among these services. - How services are placed in different security zones (network zones). The purpose of the SCADA architecture patterns is to clarify how SCADA systems are commonly designed by employing a stringent model framework. Internal in the project the SCADA patterns will be used to develop SCADA system design models that reflect some typical systems deployed in industry. These models will be used in other work packages and deliverables in the VIKING project.
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| 9. |
- Chenine, Moustafa, 1981-, et al.
(författare)
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A Framework for Wide-Area Monitoring and Control Systems Interoperability and Cybersecurity Analysis
- 2014
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Ingår i: IEEE Transactions on Power Delivery. - 0885-8977 .- 1937-4208. ; 29:2, s. 633-641
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Tidskriftsartikel (refereegranskat)abstract
- Wide-area monitoring and control (WAMC) systems are the next-generation operational-management systems for electric power systems. The main purpose of such systems is to provide high resolution real-time situational awareness in order to improve the operation of the power system by detecting and responding to fast evolving phenomenon in power systems. From an information and communication technology (ICT) perspective, the nonfunctional qualities of these systems are increasingly becoming important and there is a need to evaluate and analyze the factors that impact these nonfunctional qualities. Enterprise architecture methods, which capture properties of ICT systems in architecture models and use these models as a basis for analysis and decision making, are a promising approach to meet these challenges. This paper presents a quantitative architecture analysis method for the study of WAMC ICT architectures focusing primarily on the inter-operability and cybersecurity aspects.
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| 10. |
- Chenine, Moustafa, 1981-, et al.
(författare)
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A Pattern for Designing Distributed Heterogeneous Ontologies for Facilitating Application Interoperability
- 2006
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Ingår i: EMOI - INTEROP'06, Enterprise Modelling and Ontologies for Interoperability, Proceedings of the Open Interop Workshop on Enterprise Modelling and Ontologies for Interoperability. - : CEUR-WS.org.
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Konferensbidrag (refereegranskat)abstract
- The role of ontologies in knowledge base systems is gradually increasing. Along with the growth of Internet based applications and e- commerce, the need for easy interoperability between ontologies is paramount. Today methodologies and design guidelines for building and developing ontologies from scratch exist, and others have focused on evolving step-by-step growth of ontologies as shall be discussed in this paper. However, we find inadequate aid in the design of distributed, heterogeneous and multi-functioned, application ontology, primarily aimed to be the central hub for interoperability between a number of other applications which may or may not be ontology based. In this paper, we present a logical context based ontology design architecture in the form of Principle-Subject-Support(PSS) pattern. The PSS pattern has been used as a guide to analyze and model several perspectives involved in a practical case study carried out in a military network simulation project to build a distributed repository ontology (DRONT) for interoperability.
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