Simulations and Experimental Results of Active and Reactive Power Control Using HVDC Transmission Systems

The development of semiconductors and microcomputers have led to progress in the production, transmission and distribution of electrical energy. The power transmission in HVDC (High Voltage Direct Current) based on converters of type VSC (Voltage Source Converter) to win the challenge the power transfer of large values. The complexity of controller loop settings is a necessity to achieve the desired results. The control techniques used prove the effectiveness of the results with better performance in terms of stability, speed and reliability with the respect of the tolerance interval of overrun. The main contribution of this paper is the best control management of a bidirectional transfer of power experimentally between two infinite bus grids using HVDC system. The simulation results obtained in MATLAB-Simulink environment and through test bench model justify an improvement of voltage rate in the electric grid and flexibility of active and reactive power control through HVDC transmission systems. Besides, these results were obtained following the adoption of new additive performances based on a better estimation of the variation margins of the controlled variable.