Modeling and control design of a static synchronous series compensator

Author

Kumar, L. Sunil ; Ghosh, Arindam

Author_Institution

Dept. of Electr. Eng., Indian Inst. of Technol., Kanpur, India

Volume

14

Issue

4

fYear

1999

fDate

10/1/1999 12:00:00 AM

Firstpage

1448

Lastpage

1453

Abstract

The design, modeling and control design of a 48-step inverter based static synchronous series compensator (SSSC) is presented in this paper. A magnetic circuit is chosen which contains eighteen single-phase three winding transformers and six single-phase two winding transformers to add the output voltages of eight three-phase inverters. An equivalent circuit model of the SSSC is derived and based on this model a proportional-plus-integral controller is proposed. The controller gains are chosen through eigenvalue analysis of the IEEE first benchmark model for subsynchronous resonance (SSR) analysis. The SSSC model, its control and the results of the eigenvalue analysis are then validated through PSCAD/EMTDC simulation. It is shown that for certain controller gains torque amplification of the shaft modes can occur

Keywords

DC-AC power convertors; control system analysis computing; control system synthesis; eigenvalues and eigenfunctions; invertors; power system analysis computing; power system control; power transformers; reactive power control; static VAr compensators; subsynchronous resonance; transformer magnetic circuits; transformer windings; two-term control; 48-step inverter; PI control; PSCAD/EMTDC simulation; computer simulation; control design; control simulation; controller gains selection; eigenvalue analysis; equivalent circuit model; magnetic circuit; proportional-plus-integral controller; shaft modes torque amplification; single-phase three winding transformers; single-phase two winding transformers; static synchronous series compensator; subsynchronous resonance analysis; three-phase inverters; Control design; EMTDC; Eigenvalues and eigenfunctions; Equivalent circuits; Inverters; Magnetic circuits; PSCAD; Proportional control; Resonance; Transformers;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.796239

Filename

796239