Wave Transformation Based Interface Algorithm for Distributed Simulation of HVDC Systems

Abstract

Transition to the next-generation power systems is resulting in the increasing deployment of High-Voltage direct current (HVdc) connections and multi-terminal HVdc grids. To support this transition, a holistic real-time simulation and testing infrastructure is beneficial. We propose realization of such infrastructure based on virtual interconnection of geographically dispersed laboratories. One of the main challenges associated with realization of this concept is compensating the effect of communication network and ensuring stability of Geographically Distributed Real-Time Simulation (GD-RTS). In this work we propose a co-simulation Interface Algorithm (IA) based on wave transformation (WT), a method widely utilized in the field of bilateral teleoperation. WT-based co-simulation IA is applied for GD-RTS of HVdc link with a partitioning point at a dc cable. While co-simulation IA based on Ideal Transformer Model (ITM) is not stable, WT-based co-simulation IA ensures simulation stability for large values of time delay.