Analysis of the combined effects of SVC and SSSC controllers to improve power system stability

Dahat, Suraj Ankush; Dhabale, Ashwin

doi:10.1016/j.egyr.2023.09.064

Energy Reports

2023

DOI: 10.1016/j.egyr.2023.09.064

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Analysis of the combined effects of SVC and SSSC controllers to improve power system stability

Suraj Ankush Dahat,

Ashwin Dhabale

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2024

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Cited by 2 publications

References 18 publications

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Investigations on stability improvement by implementing SSSC optimally with X/R ratio

Nema,

George

2024

Journal of Electrical Systems and Inf Technol

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Series compensation is widely used to enhance the transmittable power through an existing transmission line. This is achieved by controlling series reactance of the transmission line by injecting a voltage in series with transmission line and is perpendicular to the line current. However, X/R ratio of the transmission line gets deteriorated with series compensation. X/R ratio plays an important role in maintaining stability and damping oscillation in power system. In the proposed scheme, X/R ratio of the line has been included as one of the constraints along with midpoint voltage and power balance equation, with the objective of minimizing power system losses while enhancing the power. It is found that by maintaining X/R ratio of the transmission line same as the original designed value, stability of the system can be improved while making an attempt to enhance the transmittable power capacity. Steady state and transient stability, voltage stability and damping oscillations are analyzed with proposed optimal control of statis synchronous series compensator (SSSC), and results are produced. Validation of proposed optimal control of SSSC is done by using MATLAB platform for enhancing transmittable power of a 400 kV, 400 km transmission line and results are presented here. The paper investigates the effectiveness of the proposed optimization technique on improvement of power system stability and oscillations damping as well.

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Investigations on stability improvement by implementing SSSC optimally with X/R ratio

Nema,

George

2024

Journal of Electrical Systems and Inf Technol

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SVC Control Strategy for Transient Stability Improvement of Multimachine Power System

Šešok,

Pavić

2024

Energies

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The increase in renewable energy sources (RESs) in power systems is causing significant changes in their dynamic behavior. To ensure the safe operation of these systems, it is necessary to develop new methods for preserving transient stability that follow the new system dynamics. Fast-response devices such as flexible AC transmission systems (FACTSs) can improve the dynamic response of power systems. One of the most frequently used FACTS devices is the Static Var Compensator (SVC), which can improve a system’s transient stability with a proper control strategy. This paper presents a reactive power control strategy for an SVC using synchronized voltage phasor measurements and particle swarm optimization (PSO) to improve the transient stability of a multimachine power system. The PSO algorithm is based on the sensitivity analysis of bus voltage amplitudes and angles to the reactive power of the SVC. It determines the SVC reactive power required for damping active power oscillations of synchronous generators in fault conditions. The sensitivity coefficients can be determined in advance for the characteristic switching conditions of the influential part of the transmission network, and with the application of the PSO algorithm, enable quick and efficient finding of a satisfactory solution. This relatively simple and fast algorithm can be applied in real time. The proposed control strategy is tested on the IEEE 14-bus system using DIgSILENT PowerFactory. The simulation results show that an SVC with the proposed control strategy effectively minimizes the rotor angle oscillations of generators after large disturbances.

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Analysis of the combined effects of SVC and SSSC controllers to improve power system stability

Cited by 2 publications

References 18 publications

Investigations on stability improvement by implementing SSSC optimally with X/R ratio

Investigations on stability improvement by implementing SSSC optimally with X/R ratio

SVC Control Strategy for Transient Stability Improvement of Multimachine Power System

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