Dynamic Virtual Admittance Control Hardware-In-The-Loop Real-Time Simulation

Abstract: To enhance the transient stability and the power oscillation damping of the powergrid, supplementary controllers can be applied to the embedded point-to-point High-Voltage Direct Current (HVDC) links. The work presented in this report aimed tovalidate the Dynamic Virtual Admittance Control (DVAC) designed in SuperGridInstitute, in Software- and Hardware-In-The-Loop (SIL and HIL) simulations.The DVA control was first studied analytically and implemented in an offlinesimulation, on a basic test-system. A two-area test-system was then modelled as thebase for validation of the stabilising control. The fault applied to test the controller’sefficiency was a three-phase short-circuit on one of the AC transmission lines linkingthe two areas. The DVAC was validated on the test-system, first by SIL, and thenby HIL real-time simulation. For the purpose of turning the simulation into an HILsimulation, the DVAC was implemented in code C in a Raspberry Pi computer, andthe IEC 61850 communication protocol was studied in detail to be configured for theHIL simulation’s set-up.The SIL and HIL simulations of the DVAC on a three-phase short-circuit provedthe control’s ability to damp power oscillations in around 5 seconds, twice as fast asif no control is implemented.