Anti-windup compensator design for power system subjected to time-delay and actuator saturation
In this study, a delay-dependent anti-windup compensator (AWC) is designed for supplementary damping control (SDC) of flexible AC transmission system (FACTS) device to enhance the damping of inter-area oscillations of the power system subjected to...
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| Format: | Article |
| Language: | English |
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Wiley
2018-12-01
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| Series: | IET Smart Grid |
| Subjects: | |
| Online Access: | https://digital-library.theiet.org/content/journals/10.1049/iet-stg.2018.0113 |
| _version_ | 1818333223160119296 |
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| author | Maddela Chinna Obaiah Bidyadhar Subudhi Bidyadhar Subudhi |
| author_facet | Maddela Chinna Obaiah Bidyadhar Subudhi Bidyadhar Subudhi |
| author_sort | Maddela Chinna Obaiah |
| collection | DOAJ |
| description | In this study, a delay-dependent anti-windup compensator (AWC) is designed for supplementary
damping control (SDC) of flexible AC transmission system (FACTS) device to
enhance the damping of inter-area oscillations of the power system subjected to
time-delay and actuator saturation. By employing global signal measurements, an
SDC of FACTS device is designed without considering the effect of time-delay and
actuator saturation to stabilise the power system using a robust output feedback
controller with pole placement approach. Then, based on the generalised sector
condition and Lyapunov–Krasovskii functional, an add-on delay-dependent AWC is
designed to mitigate the adverse effect of time-delay and actuator saturation
non-linearity. For the design of delay-dependent AWC, sufficient conditions
guarantee the asymptotic stability of the closed-loop power system are
formulated in the form of linear matrix inequalities (LMIs). These conditions
are cast into the LMI-based convex optimisation problem to compute the AWC
gains. To evaluate the effectiveness of the proposed controller, non-linear
simulations were performed first using MATLAB/Simulink. Then, the authors
implemented the proposed controller in real-time using the Opal-RT digital
simulator. From the obtained results, it is observed that the proposed
controller enhances the damping of inter-area oscillations by compensating the
effect of time delay and actuator saturation. |
| first_indexed | 2024-12-13T13:48:13Z |
| format | Article |
| id | doaj.art-27c00f7c46354eae9526e4c84501633c |
| institution | Directory Open Access Journal |
| issn | 2515-2947 |
| language | English |
| last_indexed | 2024-12-13T13:48:13Z |
| publishDate | 2018-12-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Smart Grid |
| spelling | doaj.art-27c00f7c46354eae9526e4c84501633c2022-12-21T23:43:18ZengWileyIET Smart Grid2515-29472018-12-0110.1049/iet-stg.2018.0113IET-STG.2018.0113Anti-windup compensator design for power system subjected to time-delay and actuator saturationMaddela Chinna Obaiah0Bidyadhar Subudhi1Bidyadhar Subudhi2National Institute of TechnologyNational Institute of TechnologyNational Institute of TechnologyIn this study, a delay-dependent anti-windup compensator (AWC) is designed for supplementary damping control (SDC) of flexible AC transmission system (FACTS) device to enhance the damping of inter-area oscillations of the power system subjected to time-delay and actuator saturation. By employing global signal measurements, an SDC of FACTS device is designed without considering the effect of time-delay and actuator saturation to stabilise the power system using a robust output feedback controller with pole placement approach. Then, based on the generalised sector condition and Lyapunov–Krasovskii functional, an add-on delay-dependent AWC is designed to mitigate the adverse effect of time-delay and actuator saturation non-linearity. For the design of delay-dependent AWC, sufficient conditions guarantee the asymptotic stability of the closed-loop power system are formulated in the form of linear matrix inequalities (LMIs). These conditions are cast into the LMI-based convex optimisation problem to compute the AWC gains. To evaluate the effectiveness of the proposed controller, non-linear simulations were performed first using MATLAB/Simulink. Then, the authors implemented the proposed controller in real-time using the Opal-RT digital simulator. From the obtained results, it is observed that the proposed controller enhances the damping of inter-area oscillations by compensating the effect of time delay and actuator saturation.https://digital-library.theiet.org/content/journals/10.1049/iet-stg.2018.0113compensationactuatorspower system stabilitydampingLyapunov methodsclosed loop systemsnonlinear control systemspower transmission controlfeedbackoscillationsdelayscontrol nonlinearitiesconvex programmingflexible AC transmission systemsasymptotic stabilityrobust controlcontrol system synthesislinear matrix inequalitiesanti-windup compensator designtime-delaydelay-dependent anti-windup compensatorsupplementary damping controlSDCflexible AC transmission system deviceinter-area low-frequency oscillationsrobust output feedback controllerdelay-dependent AWCactuator saturation nonlinearityclosed-loop power system |
| spellingShingle | Maddela Chinna Obaiah Bidyadhar Subudhi Bidyadhar Subudhi Anti-windup compensator design for power system subjected to time-delay and actuator saturation IET Smart Grid compensation actuators power system stability damping Lyapunov methods closed loop systems nonlinear control systems power transmission control feedback oscillations delays control nonlinearities convex programming flexible AC transmission systems asymptotic stability robust control control system synthesis linear matrix inequalities anti-windup compensator design time-delay delay-dependent anti-windup compensator supplementary damping control SDC flexible AC transmission system device inter-area low-frequency oscillations robust output feedback controller delay-dependent AWC actuator saturation nonlinearity closed-loop power system |
| title | Anti-windup compensator design for power system subjected to time-delay and actuator saturation |
| title_full | Anti-windup compensator design for power system subjected to time-delay and actuator saturation |
| title_fullStr | Anti-windup compensator design for power system subjected to time-delay and actuator saturation |
| title_full_unstemmed | Anti-windup compensator design for power system subjected to time-delay and actuator saturation |
| title_short | Anti-windup compensator design for power system subjected to time-delay and actuator saturation |
| title_sort | anti windup compensator design for power system subjected to time delay and actuator saturation |
| topic | compensation actuators power system stability damping Lyapunov methods closed loop systems nonlinear control systems power transmission control feedback oscillations delays control nonlinearities convex programming flexible AC transmission systems asymptotic stability robust control control system synthesis linear matrix inequalities anti-windup compensator design time-delay delay-dependent anti-windup compensator supplementary damping control SDC flexible AC transmission system device inter-area low-frequency oscillations robust output feedback controller delay-dependent AWC actuator saturation nonlinearity closed-loop power system |
| url | https://digital-library.theiet.org/content/journals/10.1049/iet-stg.2018.0113 |
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