Picture of neon light reading 'Open'

Discover open research at Strathprints as part of International Open Access Week!

23-29 October 2017 is International Open Access Week. The Strathprints institutional repository is a digital archive of Open Access research outputs, all produced by University of Strathclyde researchers.

Explore recent world leading Open Access research content this Open Access Week from across Strathclyde's many research active faculties: Engineering, Science, Humanities, Arts & Social Sciences and Strathclyde Business School.

Explore all Strathclyde Open Access research outputs...

Transient stability analysis in Multi-terminal VSC-HVDC grids

Endegnanew, A. G. and Uhlen, K. and Haileselassie, T. M. and Anaya-Lara, O. (2016) Transient stability analysis in Multi-terminal VSC-HVDC grids. In: 2016 Power Systems Computation Conference (PSCC). IEEE, Piscataway, N.J.. ISBN 978-88-941051-2-4

[img]
Preview
Text (Endegnanew-etal-PSCC-2016-Transient-stability-analysis-in-multi-terminal-VSC)
Endegnanew_etal_PSCC_2016_Transient_stability_analysis_in_multi_terminal_VSC.pdf - Accepted Author Manuscript

Download (533kB) | Preview

Abstract

A novel approach to transient stability analysis in multi-terminal high voltage direct current (MTDC) grids is presented in this paper. A symmetrical three-phase fault in an ac grid connected to a rectifier terminal of the MTDC grid causes the power injected into the dc grid to decrease, which in turn leads to a lower dc voltage in the MTDC grid. If dc voltage drops below a critical voltage limit before the ac fault is cleared, then the dc grid becomes unstable and its operation is disrupted. An analytical approach is proposed in this paper to calculate the critical clearing time of a fault in an ac grid behind a rectifier terminal beyond which dc voltage collapse occurs. A five-terminal MTDC grid modeled in EMTDC/PSCAD is used to validate the results obtained with the analytical method.