General Classification and Comprehensive Performance Assessment of Multi-Objective DC Voltage Control in Multi-Terminal HVDC Networks

The recent massive global movement towards green energy in power systems has raised the efforts of integrating large-scale Renewable Energy Sources (RESs) through Multi-Terminal HVDC (MTDC) systems. configuration MTDC system and possibility transnational interconnection impose some challenges raise potential single or multi-objective control for DC voltage control. Additional requirements from Transmission System Operator (TSO) and/or AC grids may influence action taken In this paper, a generalized classification methods an is delivered. are classified into conventional (i.e., reference voltage-based control) non-conventional virtual resistance-based methods. objective cover range following targets: power-sharing based on converters' rating capacity, ratio priority distribution, available headroom, loading factor. include transmission losses minimization with optimal sub-optimal flow. design approaches post-contingency operation presented. evaluated simulated 4-terminal radial network during normal abnormal operation. A comprehensive performance assessment also presented considering perspective method objective, efficiency, grid-code violation, communication requirement, complexity flexibility.