Dynamic phasor model of HVDC links for linear analysis of dynamic performance

• DOI: 10.1016/j.ijepes.2024.110101
• Publication Date: 2024-06-25T12:53:42Z
• Authors: Rodrigo Godim Aze...; Sergio Gomes; Thiago J. Massera...
• Keywords: TK1001-1841; Production of electric energy or power. Powerplants. Central stations; 0202 electrical engineering, electronic engineering, information engineering; Small signal stability; Dynamic phasors; Switching functions; 02 engineering and technology; Power system; HVDC links

This paper presents a linearized HVDC link model, which was implemented in PacDyn software and is applicable to dynamic performance studies of power electronic equipment considering electrical network electromagnetic transients, differently from electromechanical studies where the network dynamics is usually neglected. The proposed HVDC model was developed employing equivalent switching functions concepts and dynamic phasors. Simulations and results for small and large-scale test systems are presented. Model validation is performed through comparisons between results obtained by PacDyn and PSCAD. In sequence, there are practical examples of controller tunning considering adverse dynamic interaction mitigation between HVDC Link and electrical grid. The final results on a large-scale model of the Brazilian power system demonstrate that the proposed HVDC model can be used in actual engineering studies.