The Experts below are selected from a list of 78 Experts worldwide ranked by ideXlab platform
Virgilio A Centeno - One of the best experts on this subject based on the ideXlab platform.
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an information architecture for future power systems and its reliability analysis
IEEE Transactions on Power Systems, 2002Co-Authors: Zhaoxia Xie, G Manimaran, V Vittal, A G Phadke, Virgilio A CentenoAbstract:Analysis of 162 disturbances from 1979 to 1995 reported by the North American Electric Reliability Council (NERC) indicates the importance of information systems under the regulated and competitive environment. This paper points out the major deficiencies in current communication and information systems and proposes a new power system information architecture aimed at correcting these deficiencies. The proposed architecture includes automation and Control systems at all levels, from Substation Control system to independent system operator (ISO) operating center, taking into account the requirements of real-time data, security, availability, scalability, and appropriate Quality of Service (QoS). It uses multiple communication channels employing a wide variety of technologies to transmit real-time operating data and Control signals. The real-time operating and Control system is modeled with various redundancy configurations; the reliabilities of different configurations are studied and compared for practical values of component failure rates and repair rates.
Haibo He - One of the best experts on this subject based on the ideXlab platform.
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cyber attack recovery strategy for smart grid based on deep reinforcement learning
IEEE Transactions on Smart Grid, 2019Co-Authors: Haibo HeAbstract:The integration of cyber-physical system increases the vulnerabilities of critical power infrastructures. Once the malicious attackers take the Substation Control authorities, they can trip all the transmission lines to block the power transfer. As a consequence, asynchrony will emerge between the separated regions which had been interconnected by these transmission lines. In order to recover from the attack, a straightforward way is to reclose these transmission lines once we detect the attack. However, this may cause severe impacts on the power system, such as current inrush and power swing. Therefore, it is critical to properly choose the reclosing time to mitigate these impacts. In this paper, we propose a recovery strategy to reclose the tripped transmission lines at the optimal reclosing time. In particular, a deep reinforcement learning (RL) framework is adopted to endow the strategy with the adaptability of uncertain cyber-attack scenarios and the ability of real-time decision-making. In this framework, an environment is established to simulate the power system dynamics during the attack-recovery process and generate the training data. With these data, the deep RL based strategy can be trained to determine the optimal reclosing time. Numerical results show that the proposed strategy can minimize the cyber-attack impacts under different scenarios.
Hrvoje Keserica - One of the best experts on this subject based on the ideXlab platform.
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augmented reality applications for Substation management by utilizing standards compliant scada communication
Energies, 2018Co-Authors: Miro Antonijevic, Stjepan Sucic, Hrvoje KesericaAbstract:Most electrical Substations are remotely monitored and Controlled by using Supervisory Control and Data Acquisition (SCADA) applications. Current SCADA systems have been significantly enhanced by utilizing standardized communication protocols and the most prominent is the IEC 61850 international standard. These enhancements enable improvements in different domains of SCADA systems such as communication engineering, data management and visualization of automation process data in SCADA applications. Process data visualization is usually achieved through Human Machine Interface (HMI) screens in Substation Control centres. However, this visualization method sometimes makes supervision, Control and maintenance procedures executed by engineers slow and error-prone because it separates equipment from its automation data. Augmented reality (AR) and mixed reality (MR) visualization techniques have matured enough to provide new possibilities of displaying relevant data wherever needed. This paper presents a novel methodology for visualizing process related SCADA data to enhance and facilitate human-centric activities in Substations such as regular equipment maintenance. The proposed solution utilizes AR visualization techniques together with standards-based communication protocols used in Substations. The developed proof-of-concept AR application that enables displaying SCADA data on the corresponding Substation equipment with the help of AR markers demonstrates originality and benefits of the proposed visualization method. Additionally, the application enables displaying widgets and 3D models of Substation equipment to make the visualization more user-friendly and intuitive. The visualized SCADA data needs to be refreshed considering soft real-time data delivery restrictions. Therefore, the proposed solution is thoroughly tested to demonstrate the applicability of proposed methodology in real Substations.
Zhaoxia Xie - One of the best experts on this subject based on the ideXlab platform.
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an information architecture for future power systems and its reliability analysis
IEEE Transactions on Power Systems, 2002Co-Authors: Zhaoxia Xie, G Manimaran, V Vittal, A G Phadke, Virgilio A CentenoAbstract:Analysis of 162 disturbances from 1979 to 1995 reported by the North American Electric Reliability Council (NERC) indicates the importance of information systems under the regulated and competitive environment. This paper points out the major deficiencies in current communication and information systems and proposes a new power system information architecture aimed at correcting these deficiencies. The proposed architecture includes automation and Control systems at all levels, from Substation Control system to independent system operator (ISO) operating center, taking into account the requirements of real-time data, security, availability, scalability, and appropriate Quality of Service (QoS). It uses multiple communication channels employing a wide variety of technologies to transmit real-time operating data and Control signals. The real-time operating and Control system is modeled with various redundancy configurations; the reliabilities of different configurations are studied and compared for practical values of component failure rates and repair rates.
Miro Antonijevic - One of the best experts on this subject based on the ideXlab platform.
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augmented reality applications for Substation management by utilizing standards compliant scada communication
Energies, 2018Co-Authors: Miro Antonijevic, Stjepan Sucic, Hrvoje KesericaAbstract:Most electrical Substations are remotely monitored and Controlled by using Supervisory Control and Data Acquisition (SCADA) applications. Current SCADA systems have been significantly enhanced by utilizing standardized communication protocols and the most prominent is the IEC 61850 international standard. These enhancements enable improvements in different domains of SCADA systems such as communication engineering, data management and visualization of automation process data in SCADA applications. Process data visualization is usually achieved through Human Machine Interface (HMI) screens in Substation Control centres. However, this visualization method sometimes makes supervision, Control and maintenance procedures executed by engineers slow and error-prone because it separates equipment from its automation data. Augmented reality (AR) and mixed reality (MR) visualization techniques have matured enough to provide new possibilities of displaying relevant data wherever needed. This paper presents a novel methodology for visualizing process related SCADA data to enhance and facilitate human-centric activities in Substations such as regular equipment maintenance. The proposed solution utilizes AR visualization techniques together with standards-based communication protocols used in Substations. The developed proof-of-concept AR application that enables displaying SCADA data on the corresponding Substation equipment with the help of AR markers demonstrates originality and benefits of the proposed visualization method. Additionally, the application enables displaying widgets and 3D models of Substation equipment to make the visualization more user-friendly and intuitive. The visualized SCADA data needs to be refreshed considering soft real-time data delivery restrictions. Therefore, the proposed solution is thoroughly tested to demonstrate the applicability of proposed methodology in real Substations.
