Investigation of STATCOM performance with different participation of dynamic and static load in isolated hybrid power system

Proceedings of the Institution of Mechanical Engineers, Part I:

2022

Reactive power management and voltage control are the critical problems to be dealt with in hybrid power systems, considering the frequent changes in load and wind power along with parameter uncertainties. Therefore, in this work, the load-side converter with a doubly-fed induction generator is controlled and operated as a static synchronous compensator to provide reactive power support to the system. A higher order sliding mode controller with a super-twisting feature is proposed as a robust controller for the load-side converter operation to regulate the reactive power balance and improve the voltage response of the system. The asymptotic stability of the applied control scheme is guaranteed using the Lyapunov stability analysis. MATLAB-based computer simulation studies are conducted to show the efficacy of the proposed control structure while considering the disturbances in load, wind power, and parameter uncertainties.

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Section: Literature Surveymentioning

confidence: 99%

Higher order sliding mode reactive power control of a hybrid power system with wind power and parameter uncertainty

Proceedings of the Institution of Mechanical Engineers, Part I:

2022

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“…Automatic reactive power control of wind–diesel-based power systems is reported in Shahbazuddin and Sridhar (2017) and Bansal (2006). Voltage control in hybrid power systems through the employment of reactive power compensating devices like static VAR compensator (SVC) and static synchronous compensator (STATCOM) has been reported in Sharma et al (2012), Bansal et al (2004), and Saxena and Kumar (2016). These devices are installed to keep reactive power balance in the system whenever required.…”

Section: Introductionmentioning

confidence: 99%

Super-twisting sliding mode control of a static synchronous compensator: An application in a wind–diesel hybrid system

Transactions of the Institute of Measurement and Control

2023

The dynamic nature of load and wind power could lead to reactive power imbalance, and hence the voltage deviations in a wind–diesel power system. These deviations, if not controlled, may drive the system to operate in an unstable manner. Therefore, in this paper, a static synchronous compensator (STATCOM) is interconnected to the system to achieve reactive power balancing and minimize voltage deviations. To improve the dynamic performance of STATCOM and achieve the effective operation of the system, an optimized sliding mode controller (SMC) is designed. With the help of the design of a first-order switching manifold, an SMC is designed, which generates a control law to control the converter firing angle, and hence the reactive power output of the STATCOM. To eliminate the chattering drawback of SMC and improve the convergence characteristics, a second-order super-twisting sliding mode controller (STSMC) is proposed. The asymptotic stability of the proposed controller is guaranteed through the Lyapunov stability analysis. Particle swarm optimization (PSO) is employed to fine-tune controller parameters and achieve optimal performance. Validation of the improved performance of the system through this proposed scheme has been carried out in the MATLAB/Simulink environment and presented in the simulation studies.

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Adaptive RBF sliding mode control of STATCOM: A voltage control application

2021 International Conference on Control, Automation, Power and Signal Processing (CAPS)

2021