Title: Dynamic modelling and small signal stability analysis of voltage source converter-based HVDC system
Authors: N. Nayak; P.K. Dash; Pravat Kumar Rout
Addresses: Department of Electrical and Electronics Engineering, Institute of Technical Education and Research, SOA University, Bhubaneswar-751030, Odisha, India ' Research and Consultancy, SOA University, Bhubaneswar-751030, Odisha, India ' Department of Electrical Engineering, Institute of Technical Education and Research, SOA University, Bhubaneswar-751030, Odisha, India
Abstract: In this paper, the modelling of the entire VSC-HVDC system is presented based on d-q axis decomposition and state space modelling is formulated for analysis. Eigenvalues analysis is used for optimal tuning of PI controller based on PSO technique. The system is simulated under most of the frequently occurring faults and abnormal operating conditions such as three-phase fault, parameter variation, frequency variation and change in active and reactive power, change in short circuit ratio and bus voltage reduction and change in converter parameters through MATLAB simulation. The results are presented for the proposed controller with comparison to conventional PI controller under various fault condition.
Keywords: high-voltage direct current; HVDC transmission systems; PI control; particle swarm optimisation; PSO; dynamic modelling; small signal stability analysis; voltage source converter; VSC; d-q axis decomposition; state space modelling; simulation; controller tuning; fault conditions.
International Journal of Power and Energy Conversion, 2016 Vol.7 No.3, pp.203 - 226
Received: 16 Sep 2014
Accepted: 20 Feb 2015
Published online: 29 Aug 2016 *