Utilizing HVDC links as a energy storing device in AGC operation of hydro-thermal-gas based interconnected power systems

Abstract

This paper utilizes the HVDC links as a energy storing device in automatic generation control (AGC) operation. The HVDC link has been considered as DC capacitors in which electrical energy is stored in the electro static form. This electrical energy has been utilized to assist in AGC operation. The two areas of hydro-thermal-gas generation based power systems with AC-HVDC interconnections have been considered for the investigation. Furthermore, discrete supplementary controllers have been taken for secondary control action. The comparative analysis has also been performed to demonstrate effectiveness of the proposed control strategy for HVDC links.