Direct Current Analysis of LCC based HVDC System during Fault using DIgSILENT PowerFactory

Abstract

The performance of the grid connected wind farms (WFs) with HVDC system is attracting much interest. Many WFs employ controllers for converter stations to provide a favourable grid support during fault. This paper focusses on the direct current analysis of the HVDC system during three phase (ϕ) fault. The paper has been proposed the "DIgSILENT Simulation Language (DSL)" based voltage dependant current order limiter (VDCOL) and PI controller for the converter stations. The DIgSILENT PowerFactory (DPF) software provides the platform to model the HVDC system for better DC current and voltage response under the fault. The stability of this system is analysed with the bode plot. The simulation results under the 3-phase fault indicate the better DC current and voltage behaviour.