Application of D-STATCOM to improve distribution system performance with balanced and unbalanced fault conditions

This paper proposes a new control method for D-STATCOM (Distribution STATIC Compensator) control system. The operation of this proposed control method enables D-STATCOM to mitigate all types of fault, intelligently (such as Single Line to Ground (SLG) fault and Double Phase to Ground (DPG) fault and three-phase fault). In this paper, the 12-pulse D-STATCOM configuration with IGBT is designed and the graphic based models of the DSTATCOM are developed using the PSCAD/EMTDC electromagnetic transient simulation program. This paper validates the performance of a D-STATCOM system for improving distribution system performance under all types of fault. The reliability and robustness of the control scheme in the system response to the voltage sags caused by SLG and DPG and three-phase faults is obviously proved in the simulation results.

[1]  H. Wayne Beaty,et al.  Electrical Power Systems Quality , 1995 .

[2]  L. S. Patil,et al.  Application of D-STATCOM to mitigate voltage sag due to DOL starting of three phase induction motor , 2009, 2009 International Conference on Control, Automation, Communication and Energy Conservation.

[3]  F. Shahnia,et al.  Investigation on D-STATCOM and DVR Operation for Voltage Control in Distribution Networks with a New Control Strategy , 2007, 2007 IEEE Lausanne Power Tech.

[4]  Masatoshi Takeda,et al.  Improved power quality solutions using advanced solid-state switching and static compensation technologies , 1999, IEEE Power Engineering Society. 1999 Winter Meeting (Cat. No.99CH36233).

[5]  B.C. Kok,et al.  Linear Feedback Controller for D-Statcom in DPG Fault Application , 2006, Proceedings of the 41st International Universities Power Engineering Conference.

[6]  N. Mariun,et al.  Design of a Prototype D-Statcom using DSP Controller for Voltage Sag Mitigation , 2005, 2005 International Conference on Power Electronics and Drives Systems.

[7]  E. Acha,et al.  Modeling and Analysis of Custom Power Systems by PSCAD/EMTDC , 2001, IEEE Power Engineering Review.

[8]  S. Bhattacharya,et al.  Improving distribution system performance with integrated STATCOM and supercapacitor energy storage system , 2008, 2008 IEEE Power Electronics Specialists Conference.