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Start Over Author "Pal, Nitai" Topic nonlinear control
4 results on '"Pal, Nitai"'

2. Implications of Nonlinear Control Over Traditional Control for Alleviating Power System Stability Problem

Author

Halder, Asim, Pal, Nitai, Mondal, Debasish, Kacprzyk, Janusz, Series Editor, Pal, Nikhil R., Advisory Editor, Bello Perez, Rafael, Advisory Editor, Corchado, Emilio S., Advisory Editor, Hagras, Hani, Advisory Editor, Kóczy, László T., Advisory Editor, Kreinovich, Vladik, Advisory Editor, Lin, Chin-Teng, Advisory Editor, Lu, Jie, Advisory Editor, Melin, Patricia, Advisory Editor, Nedjah, Nadia, Advisory Editor, Nguyen, Ngoc Thanh, Advisory Editor, Wang, Jun, Advisory Editor, Bhattacharyya, Siddhartha, editor, Mitra, Sushmita, editor, and Dutta, Paramartha, editor

Published
2020
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3. Higher order sliding mode STATCOM control for power system stability improvement.

Author

Halder, Asim, Pal, Nitai, and Mondal, Debasish

Subjects
*SLIDING mode control, *SYNCHRONOUS capacitors, *ELECTRIC power systems
Abstract

The objective of this research is to design a higher order Sliding Mode Controller (SMC) for a Static Synchronous Compensator (STATCOM) and investigation of its implication on power system stability improvement. The theory of Super-Twisting–Sliding-Mode-Control (STSMC) is applied to determine the nonlinear control law of a STATCOM. The STSMC based control combines 2-sliding control and Robust Exact Differentiator (RED) which can efficiently mitigate the effect of external disturbance to the system The purpose of the application of the STSMC based control method is that it not only solves the chattering problem of classical SMC but also the derived control law is independent of system parameters. The efficacy of the design of the proposed STATCOM controller has been investigated in comparison to both the nonlinear (via exact linearization) and conventional (via approximate linearization) Linear Quadratic Regulator (LQR) based STATCOM controller. An IEEE type 14 bus multi-machine system has been taken into consideration to study the simulation results with regard to the transient stability improvement in multiple operating scenarios. It has been revealed from the simulation results that the proposed control scheme based on STSMC is more effective with respect to both the exact linearization based as well as approximately linearization based approach for the design of STATCOM controller. Furthermore, it has been abstracted that the STSMC based nonlinear STATCOM controller is competent to mitigate the dynamic instability of an electric power system even under contingency and different loading conditions. [ABSTRACT FROM AUTHOR]

Published
2020
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4. Transient Stability Analysis of a Multimachine Power System with TCSC Controller – A Zero Dynamic Design Approach.

Author

Halder, Asim, Pal, Nitai, and Mondal, Debasish

Subjects
*TRANSIENT stability of electric power systems, *MULTIMACHINE assignments, *ELECTRIC power systems, *ELECTRIC controllers, *THYRISTOR control
Abstract

In this paper a novel non-linear control scheme for Thyristor Controlled Series Capacitors (TCSCs) has been presented to analyze transient stability of a multimachine power system. The non-linear control strategy of the TCSC controller has been formulated by the Zero dynamic design approach. A WSCC type 3-machine 9-bus system has been considered for test system where two numbers of TCSC controllers are placed near the highest load bus in the network. The dynamic stability of the system has been achieved by investigating the stability of the internal states as well as the external states of the system. The stability of the internal states has been ensured by the Lyapunov stability theorem and the external states has been stabilized applying non-linear control law formulated by the zero dynamic design approach. The performance of the non-linear TCSC controller has been compared with its conventional design based on approximate linearization method. The effect of various operating points of non-linear TCSC controller has also been investigated for different loading conditions. The applicability of the above nonlinear control scheme is further demonstrated for a large power system comprising 14-areas, 24-machines and 203-buses. The simulation results for all the cases have been presented through time domain simulation of the proposed test systems with application of typical contingency and different loading conditions. It has been observed that the non-linear control scheme for the TCSC controller is more effective compared to its conventional design as well as its performance is quite satisfactory for different loading conditions in mitigating transient stability of a multimachine power system. [ABSTRACT FROM AUTHOR]

Published
2018
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