Xu, L. and Andersen, B. and Cartwright, P. (2005) VSC transmission operating under unbalanced AC conditions - analysis and control design. IEEE Transactions on Power Delivery, 20 (1). pp. 427-434. ISSN 0885-8977Full text not available in this repository. (Request a copy from the Strathclyde author)
This work presents an analysis and a new control design of a voltage-source converter (VSC) transmission system operating under unbalanced network conditions. The system is analyzed in the positive and negative synchronous reference frames. The proposed control strategy contains a main controller and an auxiliary controller. The main controller is implemented in the positive d-q frame using decoupling control without involving positive/negative-sequence decomposition. The auxiliary controller is implemented in the negative-sequence d-q frame using cross-coupling control of negative-sequence current. Simulation results using the SIMULINK power system blockset show good performance of the proposed control strategy for a 300-MW 300-kV dc VSC transmission system during both balanced conditions and unbalanced conditions as may be caused by a solid single-phase-to-ground fault.
|Keywords:||control design, converters, modeling, power transmission, unbalance, Electrical engineering. Electronics Nuclear engineering, Energy Engineering and Power Technology, Electrical and Electronic Engineering|
|Subjects:||Technology > Electrical engineering. Electronics Nuclear engineering|
|Department:||Faculty of Engineering > Electronic and Electrical Engineering|
|Depositing user:||Strathprints Administrator|
|Date Deposited:||17 Jan 2008|
|Last modified:||03 Feb 2017 03:08|