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Author: search.filters.author.Dechanupaprittha, SanchaiSubject: search.filters.subject.Power system stabilization

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    A robust SMES controller design for stabilization of inter-area oscillations based on wide area synchronized phasor measurements
    (2009-12-01)
    Ngamroo, Issarachai
    ;
    Ali Nanda, Cuk Supriyadi
    ;
    Dechanupaprittha, Sanchai
    ;
    Watanabe, Masayuki
    ;
    Mitani, Yasunori
    This paper proposes a robust power controller design of superconducting magnetic energy storage (SMES) based on wide area synchronized phasor measurement units (PMUs) for stabilization of inter-area oscillation. The structure of active and reactive power controllers of SMES is the first-order lead/lag compensator. Assuming multiple PMUs are located in an interconnected power system, the steady state phasor data are obtained by applying the small load perturbation. Using the phasor data, the simplified oscillation model (SOM) included with SMES power controllers can be identified and applied to estimate the dominant inter-area oscillation modes. In the robust control design, unstructured system uncertainties such as various operating conditions, system parameters variation, etc., are represented by the inverse additive perturbation and included in the SOM. To enhance the system robust stability margin, the optimization of SMES control parameters is solved by genetic algorithm in the SOM. Simulation studies in the West Japan 6-machine power system confirm that the robustness of the proposed SMES is much superior to the conventional SMES against various operating conditions and fault locations. © 2009 Elsevier B.V. All rights reserved.
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    Design of SMES controller for improving stabilization of interconnected power system based on synchronized phasor measurement
    (2007-12-01)
    Dechanupaprittha, Sanchai
    ;
    Hongesombut, Komsan
    ;
    Watanabe, Masayuki
    ;
    Mitani, Yasunori
    ;
    Ngamroo, Issarachai
    This paper presents the design of superconducting magnetic energy storage (SMES) controller for improving stabilization of interconnected power system based on synchronized phasor measurement. Load variations with abrupt changes occurring in a power system cause fluctuations of tie-line power flow and significantly disturb the effective use of transmission lines. As one of promising energy storage devices, SMES is applied for power system stabilization. SMES controller is designed based on the wide area synchronized phasor measurement. The estimated model is determined as a coupled vibration model for detection and assessment of an approximated inter-area oscillation mode. Finally, some simulation studies are carried out to demonstrate the applicability and effectiveness of the design method. ©2007 IEEE.
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    Practical design of smes controller for improving power system stability based on wide area synchronized phasor measurement
    (2007-12-01)
    Dechanupaprittha, Sanchai
    ;
    Hongesombut, Komsan
    ;
    Watanabe, Masayuki
    ;
    Mitani, Yasunori
    ;
    Ngamroo, Issarachai
    This paper proposes a practical design of superconducting magnetic energy storage (SMES) controller for improving power system stability based on synchronized phasor measurement. In interconnected power system, load variations with abrupt changes cause fluctuations of tie-line power flow and significantly affect its stability. As a promising energy storage device, SMES is utilized as a channel for improving power system stability. In particular, SMES controller is designed by taking advantages of the wide area synchronized phasor measurement. Moreover, a tabusearch algorithm is employed for optimally tuning controller parameters. The estimated model is determined as an extended coupled vibration model for detection and assessment of an approximated interarea oscillation mode. Finally, simulation study is carried out to examine and demonstrate the effectiveness of the proposed design method.
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    Stabilization of tie-line power flow by robust SMES controller for interconnected power system with wind farms
    (2007-06-01)
    Dechanupaprittha, Sanchai
    ;
    Hongesombut, Komsan
    ;
    Watanabe, Masayuki
    ;
    Mitani, Yasunori
    ;
    Ngamroo, Issarachai
    This paper presents the use of superconducting magnetic energy storage (SMES) with robust controllers for stabilization of tie-line power flow in a longitudinally interconnected power system with wind farms. The high penetration of wind power with abrupt changes causes fluctuations of tie-line power flow and significantly affects the effective use of transmission lines. A simultaneous active and reactive power control scheme of SMES including a characteristic of SMES coil current is employed for realizing a permissible range of SMES operation. Moreover, a multiplicative uncertainty model is considered in the parameter optimization of robust SMES controllers by using a heuristic method. Finally, simulation results are carried out to show the effectiveness and robustness under various situations. © 2007 IEEE.