The modern electric power system has evolved into a huge nonlinear complex system due to the interconnection of thousands of generation and transmission systems. The unparalleled growth of renewable energy resources (RESs) has caused significant concern regarding grid stability and power quality, and it is essential to find ways to control such a massive system for effective operation. The controllability of HVDC and FACTS devices allows for improvement of the dynamic behavior of grids and their flexibility. Research is being carried out at both the system and component levels of modelling, control, and stability. This Special Issue aims to present novel HVDC topologies and operation strategies to prevent abnormal grid conditions.
Subjects
DC distribution system back-to-back HVDC virtual impedance synchronous condenser (SC) embedded HVDC Powell's direct set method special protection system loss minimization grid-interconnection multi-infeed HVDC system reclosing process modular multilevel converter (MMC) grid service of HVDC angle stability impedance-based Nyquist stability criterion HVDC operation point commutation failure probability power control AC/DC converter VSC HVDC frequency droop control protection high voltage direct current (HVDC) quantitative evaluation short-circuit current calculation active power control strategies grounding system LCC HVDC insulation monitoring device (IMD) 3-phase AC/DC PWM converter transient stability angle spread reclosing current limiting resistance (RCLR) BTB-HVDC full bridge (FB) GVIF index system loss minimization SOGI-FLL half bridge (HB) fault current limiter (FCL) VSC-HVDC line commutated converter DC distribution hybrid HVDC breaker (HCB) phase detection DC-side oscillation