Inspec keywords: reviews; frequency control; HVDC power convertors; voltage-source convertors; demand side management; HVDC power transmission; energy storage; renewable energy sources; voltage control

Other keywords: VSC-HVDC; enhancing system resilience; AC systems; system frequency; HVDC technology control strategies; modular-multilevel-converter; isolated AC power systems; HVDC systems; LCC-HVDC; renewable resources; voltage sourced converter; line-commutated current-sourced converters; voltage regulation; frequency regulation; MMC-HVDC; energy storage systems; review; system operation; HVDC technology; demand response devices

Subjects: Control of electric power systems; Frequency control; d.c. transmission; Other energy storage; Voltage control; Power system control; Power convertors and power supplies to apparatus; Power electronics, supply and supervisory circuits; Power system management, operation and economics