Stability and control of VSC-based HVDC systems: A systematic review

•A comprehensive review of the studies regarding the stability and control of VSC-based HVDC/HVAC systems is carried out.•Addressed opportunities and challenges of integrating conventional and non-conventional energy sources into HVDC/HVAC grids.•Different aspects of the stability and control of VSC-based HVDC/HVAC systems are discussed. The technological development in the area of power electronics has paved the way for the construction of High Voltage Direct Current (HVDC) systems. The utilization of HVDC grids alongside conventional High Voltage Alternating Current (HVAC) grids poses several challenges, especially, from stability and control points of view. Indeed, moving towards such systems in the context of conventional Alternating Current (AC) power systems cannot be possible without ensuring the overall stability of hybrid HVAC/HVDC grids. This paper analyzes different aspects of the stability of Voltage Source Converter (VSC)-based HVDC grids and presents various methods of improving stability based on a systematic and comprehensive review. In addition, this paper provides a concise classification of various control methods to improve the operation of such grids and the advantages of each method.