The Experts below are selected from a list of 126861 Experts worldwide ranked by ideXlab platform

Surya Santoso - One of the best experts on this subject based on the ideXlab platform.

  • steady state analysis and performance of low frequency ac transmission lines
    IEEE Transactions on Power Systems, 2016
    Co-Authors: Min Lwin, Surya Santoso
    Abstract:

    The steady-state performance of low frequency AC (LFAC) Systems for bulk Power transmission is proposed and investigated in this paper. It is demonstrated that the LFAC is superior to the conventional 60 Hz AC System in terms of Power transfer capability and voltage stability. An Existing Power System can increase its Power transfer capability by up to more than eleven times if it operates at 5 Hz. In low operating frequency conditions, the transmission overhead line reactance is significantly lowered and thus results in less voltage drop along the line. If the System operating frequency is in the range of 1 to 10 Hz, the voltage profile along a transmission line is comparable to the surge impedance loading at the no-load condition or approaches that of the HVDC System at the full-load condition. More importantly, the V-P and Q-V characteristic curves show that the dependency of voltage on the real and reactive Power flow is greatly reduced. In other words, the sensitivity of voltage on reactive Power variations is diminished and results in a more stable voltage and a higher stability margin for the LFAC System compared to the conventional 60 Hz System.

  • noniterative method to approximate the effective load carrying capability of a wind plant
    IEEE Transactions on Energy Conversion, 2008
    Co-Authors: C Dannunzio, Surya Santoso
    Abstract:

    The effective load carrying capability (ELCC) is considered the preferred metric to evaluate the capacity value of added wind generation. However, the classical method of computing this metric requires substantial reliability modeling and an iterative process that is quite computationally intensive. Consequently, a noniterative method of estimating a wind plant's ELCC is proposed in this paper. Inspired by Garver's approximation and derived based on well-known reliability concepts, the proposed method provides an excellent approximation while requiring only minimal reliability modeling and no computationally-intensive iterative process. It computes ELCC estimates from a single function using only the wind plant's multistate probabilistic representation and a graphically determined parameter that characterizes the Existing Power System. After presenting the complete mathematical derivation of this function, the method is applied to compute the ELCC estimates of various wind plants at different penetration levels. It is shown that the resultant ELCC estimates only slightly overestimate the classically computed values by relative errors of 2.5% or less. Furthermore, the proposed method yields more accurate ELCC estimates than the capacity factor approximation, which is commonly used to approximate the ELCC of a wind plant.

Andreas Poullikkas - One of the best experts on this subject based on the ideXlab platform.

  • a comparative overview of large scale battery Systems for electricity storage
    Renewable & Sustainable Energy Reviews, 2013
    Co-Authors: Andreas Poullikkas
    Abstract:

    In this work, an overview of the different types of batteries used for large-scale electricity storage is carried out. In particular, the current operational large-scale battery energy storage Systems around the world with their applications are identified and a comparison between the different types of batteries, as well as with other types of large-scale energy storage Systems, is presented. The analysis has shown that the largest battery energy storage Systems use sodium–sulfur batteries, whereas the flow batteries and especially the vanadium redox flow batteries are used for smaller battery energy storage Systems. The battery electricity storage Systems are mainly used as ancillary services or for supporting the large scale solar and wind integration in the Existing Power System, by providing grid stabilization, frequency regulation and wind and solar energy smoothing.

Rebecca Copeland - One of the best experts on this subject based on the ideXlab platform.

  • internet of things aided smart grid technologies architectures applications prototypes and future research directions
    IEEE Access, 2019
    Co-Authors: Yasir Saleem, Noel Crespi, Mubashir Husain Rehmani, Rebecca Copeland
    Abstract:

    Traditional Power grids are being transformed into smart grids (SGs) to address the issues in the Existing Power System due to uni-directional information flow, energy wastage, growing energy demand, reliability, and security. SGs offer bi-directional energy flow between service providers and consumers, involving Power generation, transmission, distribution, and utilization Systems. SGs employ various devices for the monitoring, analysis, and control of the grid, deployed at Power plants, distribution centers, and in consumers' premises in a very large number. Hence, an SG requires connectivity, automation, and the tracking of such devices. This is achieved with the help of the Internet of Things (IoT). The IoT helps SG Systems to support various network functions throughout the generation, transmission, distribution, and consumption of energy by incorporating the IoT devices (such as sensors, actuators, and smart meters), as well as by providing the connectivity, automation, and tracking for such devices. In this paper, we provide a comprehensive survey on the IoT-aided SG Systems, which includes the Existing architectures, applications, and prototypes of the IoT-aided SG Systems. This survey also highlights the open issues, challenges, and future research directions for the IoT-aided SG Systems.

  • internet of things aided smart grid technologies architectures applications prototypes and future research directions
    arXiv: Networking and Internet Architecture, 2017
    Co-Authors: Yasir Saleem, Noel Crespi, Mubashir Husain Rehmani, Rebecca Copeland
    Abstract:

    Traditional Power grids are being transformed into Smart Grids (SGs) to address the issues in Existing Power System due to uni-directional information flow, energy wastage, growing energy demand, reliability and security. SGs offer bi-directional energy flow between service providers and consumers, involving Power generation, transmission, distribution and utilization Systems. SGs employ various devices for the monitoring, analysis and control of the grid, deployed at Power plants, distribution centers and in consumers' premises in a very large number. Hence, an SG requires connectivity, automation and the tracking of such devices. This is achieved with the help of Internet of Things (IoT). IoT helps SG Systems to support various network functions throughout the generation, transmission, distribution and consumption of energy by incorporating IoT devices (such as sensors, actuators and smart meters), as well as by providing the connectivity, automation and tracking for such devices. In this paper, we provide a comprehensive survey on IoT-aided SG Systems, which includes the Existing architectures, applications and prototypes of IoT-aided SG Systems. This survey also highlights the open issues, challenges and future research directions for IoT-aided SG Systems.

R Billinton - One of the best experts on this subject based on the ideXlab platform.

  • cost effective wind energy utilization for reliable Power supply
    IEEE Transactions on Energy Conversion, 2004
    Co-Authors: Rajesh Karki, R Billinton
    Abstract:

    Environmental concerns and fuel cost uncertainties associated with the use of conventional energy sources have resulted in rapid growth of wind energy applications in Power generating Systems. It is important to assess the actual cost and benefit of utilizing wind energy in a Power System. Such assessments require realistic cost/reliability evaluation methods and quantitative indices. This paper presents a simulation technique that generates probabilistic indices that can help determine appropriate wind Power penetration in an Existing Power System from both the reliability and economic aspects.

Dheeman Chatterjee - One of the best experts on this subject based on the ideXlab platform.

  • a sensitivity based approach to assess the impacts of integration of variable speed wind farms on the transient stability of Power Systems
    Renewable Energy, 2013
    Co-Authors: Arghya Mitra, Dheeman Chatterjee
    Abstract:

    The impact of large penetration of wind Power on the transient stability of multi-machine Power Systems is discussed in this paper. Variable speed wind farms with doubly fed induction generators (DFIG) are considered. A new index based on the sensitivity of the DFIG terminal voltage is used to assess the transient stability margin of Power Systems, both for constant wind speed condition and during a sudden change in wind speed. Suitable locations for connecting the DFIG to an Existing Power System are identified with the help of this index. The effect of increase in wind Power penetration on the transient stability condition of the Existing Power System is studied. The proposed index is also used to select the optimum crowbar resistance during fault ride-through operation.