The Experts below are selected from a list of 327 Experts worldwide ranked by ideXlab platform
Abdallah Shami - One of the best experts on this subject based on the ideXlab platform.
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A comprehensive investigation of wireless LAN for IEC 61850-based smart Distribution Substation applications
IEEE Transactions on Industrial Informatics, 2013Co-Authors: Palak P. Parikh, Tarlochan S. Sidhu, Abdallah ShamiAbstract:Today's power grid is facing many challenges due to increasing load growth, aging of existing power infrastructures, high penetration of renewable, and lack of fast monitoring and control. Utilizing recent developments in Information and Communication Technologies (ICT) at the power-Distribution level, various smart-grid applications can be realized to achieve reliable, efficient, and green power. Interoperable exchange of information is already standardized in the globally accepted smart-grid standard, IEC 61850, over the local area networks (LANs). Due to low installation cost, sufficient data rates, and ease of deployment, the industrial wireless LAN technologies are gaining interest among power utilities, especially for less critical smart Distribution network applications. Extensive work is carried out to examine the wireless LAN (WLAN) technology within a power Distribution Substation. The first phase of the work is initiated with the radio noise interference measurements at 27.6- and 13.8-kV Distribution Substations, including circuit breaker switching operations. For a detailed investigation, the hardware prototypes of WLAN-enabled IEC 61850 devices are developed using industrial embedded systems, and the performance of smart Distribution Substation monitoring, control, and protection applications is analyzed for various scenarios using a round trip-time of IEC 61850 application messages. Finally, to examine the real-world field performance, the developed prototype devices are installed in the switchyard and control room of 27.6 power Distribution Substation, and testing results of various applications are discussed.
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A Comprehensive Investigation of Wireless LAN for IEC 61850–Based Smart Distribution Substation Applications
IEEE Transactions on Industrial Informatics, 2013Co-Authors: Palak Parikh, Tarlochan S. Sidhu, Abdallah ShamiAbstract:Today's power grid is facing many challenges due to increasing load growth, aging of existing power infrastructures, high penetration of renewable, and lack of fast monitoring and control. Utilizing recent developments in Information and Communication Technologies (ICT) at the power-Distribution level, various smart-grid applications can be realized to achieve reliable, efficient, and green power. Interoperable exchange of information is already standardized in the globally accepted smart-grid standard, IEC 61850, over the local area networks (LANs). Due to low installation cost, sufficient data rates, and ease of deployment, the industrial wireless LAN technologies are gaining interest among power utilities, especially for less critical smart Distribution network applications. Extensive work is carried out to examine the wireless LAN (WLAN) technology within a power Distribution Substation. The first phase of the work is initiated with the radio noise interference measurements at 27.6- and 13.8-kV Distribution Substations, including circuit breaker switching operations. For a detailed investigation, the hardware prototypes of WLAN-enabled IEC 61850 devices are developed using industrial embedded systems, and the performance of smart Distribution Substation monitoring, control, and protection applications is analyzed for various scenarios using a round trip-time of IEC 61850 application messages. Finally, to examine the real-world field performance, the developed prototype devices are installed in the switchyard and control room of 27.6 power Distribution Substation, and testing results of various applications are discussed.
Fengchang Lu - One of the best experts on this subject based on the ideXlab platform.
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a combined artificial neural network fuzzy dynamic programming approach to reactive power voltage control in a Distribution Substation
IEEE Transactions on Power Systems, 1998Co-Authors: Fengchang LuAbstract:Reactive power/voltage control in a Distribution Substation is investigated in this work. The purpose is to determine proper capacitor on/off status and suitable load tap changer (LTC) positions for the 24 hours in the next day. To reach this goal, an artificial neural network (ANN) is designed to reach a preliminary dispatch schedule for the capacitor and LTC. The inputs to the ANN are main transformer real power and reactive power and primary and secondary bus voltages and the outputs are the desired capacitor on/off status and LTC tap positions. The preliminary dispatch schedule is further refined by fuzzy dynamic programming in order to reach the final schedule. To demonstrate the effectiveness of the proposed method, reactive power/voltage control is performed on a Distribution Substation in Taipei, Taiwan. Results from the example show that a proper dispatch schedule for capacitor and LTC can be reached by the proposed method in a very short period.
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fuzzy dynamic programming approach to reactive power voltage control in a Distribution Substation
IEEE Transactions on Power Systems, 1997Co-Authors: Fengchang LuAbstract:A fuzzy dynamic programming (FDP) approach is proposed for solving the reactive power/voltage control problem in a Distribution Substation. The main purpose is to improve the voltage profile on the secondary bus and restrain the reactive power flow into a main transformer at the same time. To reach our objectives, the load tap changer (LTC) usually installed in a main transformer is employed to adjust the secondary voltage and the capacitor connected to the secondary bus is employed to compensate the reactive power flow for the load demands. We first forecast the real and reactive power demands of a main transformer and its primary voltages for the next day. With these forecasting data at hand, a fast LTC tap position estimation formula that takes the load models into account is derived to effectively reduce the computational burden for the proposed approach. Practical constraints on bus voltage limits, maximum allowable number switching operations in a day for the LTC and capacitor and the tolerable worst power factor for a main transformer are also considered. To demonstrate the usefulness of the proposed approach, reactive power/voltage control at a Distribution Substation within the service area of Taipei City District Office of Taiwan Power Company is investigated. It is found that a proper dispatching schedule for the LTC and capacitor can be reached by the proposed approach.
Tarlochan S. Sidhu - One of the best experts on this subject based on the ideXlab platform.
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A comprehensive investigation of wireless LAN for IEC 61850-based smart Distribution Substation applications
IEEE Transactions on Industrial Informatics, 2013Co-Authors: Palak P. Parikh, Tarlochan S. Sidhu, Abdallah ShamiAbstract:Today's power grid is facing many challenges due to increasing load growth, aging of existing power infrastructures, high penetration of renewable, and lack of fast monitoring and control. Utilizing recent developments in Information and Communication Technologies (ICT) at the power-Distribution level, various smart-grid applications can be realized to achieve reliable, efficient, and green power. Interoperable exchange of information is already standardized in the globally accepted smart-grid standard, IEC 61850, over the local area networks (LANs). Due to low installation cost, sufficient data rates, and ease of deployment, the industrial wireless LAN technologies are gaining interest among power utilities, especially for less critical smart Distribution network applications. Extensive work is carried out to examine the wireless LAN (WLAN) technology within a power Distribution Substation. The first phase of the work is initiated with the radio noise interference measurements at 27.6- and 13.8-kV Distribution Substations, including circuit breaker switching operations. For a detailed investigation, the hardware prototypes of WLAN-enabled IEC 61850 devices are developed using industrial embedded systems, and the performance of smart Distribution Substation monitoring, control, and protection applications is analyzed for various scenarios using a round trip-time of IEC 61850 application messages. Finally, to examine the real-world field performance, the developed prototype devices are installed in the switchyard and control room of 27.6 power Distribution Substation, and testing results of various applications are discussed.
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A Comprehensive Investigation of Wireless LAN for IEC 61850–Based Smart Distribution Substation Applications
IEEE Transactions on Industrial Informatics, 2013Co-Authors: Palak Parikh, Tarlochan S. Sidhu, Abdallah ShamiAbstract:Today's power grid is facing many challenges due to increasing load growth, aging of existing power infrastructures, high penetration of renewable, and lack of fast monitoring and control. Utilizing recent developments in Information and Communication Technologies (ICT) at the power-Distribution level, various smart-grid applications can be realized to achieve reliable, efficient, and green power. Interoperable exchange of information is already standardized in the globally accepted smart-grid standard, IEC 61850, over the local area networks (LANs). Due to low installation cost, sufficient data rates, and ease of deployment, the industrial wireless LAN technologies are gaining interest among power utilities, especially for less critical smart Distribution network applications. Extensive work is carried out to examine the wireless LAN (WLAN) technology within a power Distribution Substation. The first phase of the work is initiated with the radio noise interference measurements at 27.6- and 13.8-kV Distribution Substations, including circuit breaker switching operations. For a detailed investigation, the hardware prototypes of WLAN-enabled IEC 61850 devices are developed using industrial embedded systems, and the performance of smart Distribution Substation monitoring, control, and protection applications is analyzed for various scenarios using a round trip-time of IEC 61850 application messages. Finally, to examine the real-world field performance, the developed prototype devices are installed in the switchyard and control room of 27.6 power Distribution Substation, and testing results of various applications are discussed.
Atef Abdrabou - One of the best experts on this subject based on the ideXlab platform.
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INFOCOM - Stochastic information management for voltage regulation in smart Distribution systems
IEEE INFOCOM 2014 - IEEE Conference on Computer Communications, 2014Co-Authors: Hao Liang, Atef AbdrabouAbstract:In this paper, we study distributed generation (DG) integration in smart grid, with a focus on the voltage regulation in smart Distribution systems. To ensure the operation of a smart Distribution system at an acceptable voltage level, voltage regulators are deployed at some strategic locations for voltage control. The two-way communication functionality of the smart Distribution system is leveraged such that the voltage regulators are coordinated by a Distribution Substation. Based on the mea- surement reports from remote terminal units (RTUs) deployed at DG unit and load connection points, stochastic information management is performed by the Distribution Substation to address the randomness in renewable power generation and load demand. In this paper, we formulate a voltage regulation problem in the smart Distribution system based on power flow analysis, while taking into account communication delays. We show that the problem can be represented as a partially observed Markov decision process (POMDP). Since voltage regulation is performed at a relatively low frequency to avoid excessive wear and tear on the voltage regulators, a large amount of measurements should be reported by the RTUs and processed by the Distribution Substation for optimal voltage regulation. In order to reduce the communication and computational overhead, we further investigate the voltage regulation problem and mathematically prove that a relatively small amount of information is sufficient for the Distribution Substation to make an optimal decision. The theoretical results are evaluated based on a case study of IEEE 13-bus test system with real DG power generation and demand data. I. INTRODUCTION
Palak Parikh - One of the best experts on this subject based on the ideXlab platform.
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A Comprehensive Investigation of Wireless LAN for IEC 61850–Based Smart Distribution Substation Applications
IEEE Transactions on Industrial Informatics, 2013Co-Authors: Palak Parikh, Tarlochan S. Sidhu, Abdallah ShamiAbstract:Today's power grid is facing many challenges due to increasing load growth, aging of existing power infrastructures, high penetration of renewable, and lack of fast monitoring and control. Utilizing recent developments in Information and Communication Technologies (ICT) at the power-Distribution level, various smart-grid applications can be realized to achieve reliable, efficient, and green power. Interoperable exchange of information is already standardized in the globally accepted smart-grid standard, IEC 61850, over the local area networks (LANs). Due to low installation cost, sufficient data rates, and ease of deployment, the industrial wireless LAN technologies are gaining interest among power utilities, especially for less critical smart Distribution network applications. Extensive work is carried out to examine the wireless LAN (WLAN) technology within a power Distribution Substation. The first phase of the work is initiated with the radio noise interference measurements at 27.6- and 13.8-kV Distribution Substations, including circuit breaker switching operations. For a detailed investigation, the hardware prototypes of WLAN-enabled IEC 61850 devices are developed using industrial embedded systems, and the performance of smart Distribution Substation monitoring, control, and protection applications is analyzed for various scenarios using a round trip-time of IEC 61850 application messages. Finally, to examine the real-world field performance, the developed prototype devices are installed in the switchyard and control room of 27.6 power Distribution Substation, and testing results of various applications are discussed.