An Adaptive Control Scheme for Distributed Generators in Systems connected via Underground Cables

Abstract

Stringent constraints on space and reliability in urban active distribution networks demand the need for routing power cables underground (UG). Such lines are predominantly capacitive in nature unlike the overhead cables (which are inductive). This work focuses on the use of an adaptive droop coefficient based control scheme with the L, C a nd R C droops applied to inverter based distributed generators (DGs) which are interconnected through UG cables. The focus is on improved proportional power sharing among the sources with different types of loads such as balanced, unbalanced, non-linear and constant power loads. The strategies have been validated using simulations in MATLAB/Simulink.