Picture of person typing on laptop with programming code visible on the laptop screen

World class computing and information science research at Strathclyde...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by researchers from the Department of Computer & Information Sciences involved in mathematically structured programming, similarity and metric search, computer security, software systems, combinatronics and digital health.

The Department also includes the iSchool Research Group, which performs leading research into socio-technical phenomena and topics such as information retrieval and information seeking behaviour.

Explore

VSC transmission model for analytical studies

Jovcic, D. and Lamont, L. and Xu, L. (2003) VSC transmission model for analytical studies. In: IEEE-Power-Engineering-Society General Meeting 2003, 2003-07-13 - 2003-07-17.

Full text not available in this repository. Request a copy from the Strathclyde author

Abstract

This paper presents a model of Voltage Source Converter (VSC) based transmission that can be used for wide range of stability studies and controller design with MATLAB software. The model is intended for analytical studies in the frequency domain above 5Hz. The system model has modular structure and includes three separate units in state-space form: AC rectifier model, AC inverter and DC system model. The converters, controllers and Phase Locked Loop (PLL) units are included in the DC model and the model is linked with other units using input-output matrices in the state-space models. The converter non-linear model is linearised assuming small deviations around the steady-state. The model is tested against the PSCAD/EMTDC non-linear model and the results show satisfactory accuracy. The tests also confirm that the analytical model well represents multivariable system properties. An example of the model use is given showing the eigenavlue study of the influence of PLL gains on the system stability. It is concluded that increased PLL gains deteriorate system stability.