This paper presents a performance comparison (the focus of numerical simulation) of traditional simulation (TCS,TSE) with an optimal step time simulator (SOST) for large HVdc systems.In SOST, a Detailed simulation of HVdc converter behavior has been modified to include the automatic selection of optimal integration steps, frequency-dependent effects of an ac system, ac system phase and magnitude dynamics of voltage (particularly weak ac systems), control assessment and temporary over-voltage consequences. SOST, via graphical interfaces,provides fast and accurate information of electromechanical and the electromagnetic-transients behavior of a large HVdc/HVac system.
ZANGENEH, BAKTIAR and SHOULAIE, ABBAS (2003) "A New Simulator for HVdc/ac Systems-Part II," Turkish Journal of Electrical Engineering and Computer Sciences: Vol. 11: No. 3, Article 5. Available at: https://journals.tubitak.gov.tr/elektrik/vol11/iss3/5