Damping of Power System Oscillations by using coordinated tuning of POD and PSS with STATCOM

Authors: A. S. P.Kanojia, B. Dr.V.K.Chandrakar

Abstract:

Static synchronous compensator (STATCOM) is a shunt connected voltage source converter (VSC), which can affect rapid control of reactive flow in the transmission line by controlling the generated a.c. voltage. The main aim of the paper is to design a power system installed with a Static synchronous compensator (STATCOM) and demonstrates the application of the linearised Phillips-heffron model in analyzing the damping effect of the STATCOM to improve power system oscillation stability. The proposed PI controller is designed to coordinate two control inputs: Voltage of the injection bus and capacitor voltage of the STATCOM, to improve the Dynamic stability of a SMIB system .The power oscillations damping (POD) control and power system stabilizer (PSS) and their coordinated action with proposed controllers are tested. The simulation result shows that the proposed damping controllers provide satisfactory performance in terms of improvements of dynamic stability of the system.

Keywords: Damping oscillations, FACTS, STATCOM, dynamic stability, PSS, POD, Coordination.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1331153

References:

[1] N.G Hingorani, L. Gyugyi, "Understanding FACTS: Concepts and Technology of Flaxible AC Transmission Systems", IEE power engineering society, IEEE press, Delhi 2001.
[2] H. Wang, F., "Phillips- Heffron model of power system installed with STATCOM and applications." IEE Proc.,Gener. Transm.Distrib., vol.146, No. 5, September 1999
[3] H. Wang, F. Li, "Multivariable sampled regulators for the coordinated control of STATCOM ac and dc voltage,"IEE,Proc.Gen.Tran.Dist.,Vol.147,No.2,2000,pp.93-98.
[4] A.H.M.A. Rahim, M.F.Kandlawala, "Robust STATCOM voltage controller design using loop shaping technique," Electric power system Research, Vol. 68, 2004, pp.61-74.
[5] V.K.Chandrakar, A.G.Kothari, "Fuzzy-based Static Synchronous Compensator (STATCOM) for improving transient stability performance". 692 Int. J.Energy Technology and Policy,Vol.5,No.6,2007.