The Influence Analysis of Rectifier Side Control Mode on Commutation Failure in UHVDC

Abstract:

This paper studies the influence of different control modes in the rectifier side (constant current control, constant power control) on commutation failure in UHVDC transmission system. The study is based on Yunnan-Guangdong ±800kV UHVDC transmission system and simulated in PSCAD/EMTDC. A wealth of simulation results indicate that the control ability of the constant current control on commutation failure caused by the critical voltage ratio of inverter transformer increased is worse than the constant power control; the control ability of the constant current control on commutation failure caused by three-phase grounding fault happens at inverter side AC bus is worse than the constant power control; The control ability of the constant current control on commutation failure caused by phase to phase short circuit fault or single-phase ground fault happens at inverter side AC bus is worse than the constant power control.

• Periodical: Applied Mechanics and Materials (Volumes 631-632)
• Pages: 339-344
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.631-632.339
• Online since: September 2014
• Authors: Jun Xiang Rong, Ju Rui Yang
• Keywords: Commutation Failure, Constant Current Control, Constant Power Control, UHVDC

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