Adaptive control for power oscillation damping by means of a Thyristor Controlled Series Capacitor (TCSC)
2008 (English)In: 2008 PROCEEDINGS OF THE 43RD INTERNATIONAL UNIVERSITIES POWER ENGINEERING CONFERENCE, NEW YORK: IEEE , 2008, 37-41 p.Conference paper (Refereed)
This paper describes an adaptive method for control of a TCSC device for power oscillation damping. The aim is to mitigate power oscillations in power systems with one dominating oscillation mode. To design the controller, a simple generic model of the power system with only a few variables is used. Initially, a fixed-parameter controller which is based on a pole-placement technique is designed. The controller is then implemented in a digital simulator and tested in a four-machine power system. The fixed-parameter controller performs well in most cases but in some contingencies, a performance decay is seen. To improve the controller performance, an adaptive control design has been investigated. The investigated controller is a Self-Tuning Regulator and a Recursive Least-Squares method is used to estimate the system model parameters. An open-loop controller for transient stability improvement and a closed-loop PI-controller for power flow control are also presented. The adaptive controller has been validated with good results by means of simulations of a number of contingencies in different operating conditions of the four-machine system.
Place, publisher, year, edition, pages
NEW YORK: IEEE , 2008. 37-41 p.
Adaptive Control, Adaptive control designs, Adaptive controllers, Adaptive methods, Closed-loop, Controller performance, Digital simulators, Four-machine power system, Generic models, Machine systems, Open loops, Operating condition, Oscillation mode, Parameter controllers, Performance decay, PI controller, Pole placement technique, Power flow controls, Power oscillation damping, Power oscillations, Power systems, Recursive least-squares method, Self tuning regulators, System models, Thyristor controlled series capacitor, Transient stability improvement, Controllers, Damping, Electric power transmission networks, Electric switchgear, Model structures, Power transmission, Simulators
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-31278DOI: 10.1109/UPEC.2008.4651439ISI: 000263146900008ScopusID: 2-s2.0-68949207886ISBN: 978-1-4244-3294-3OAI: oai:DiVA.org:kth-31278DiVA: diva2:403318
43rd International-Universities-Power-Engineering Conference, Padova, ITALY, SEP 01-04, 2008
QC 201103112011-03-112011-03-112011-03-11Bibliographically approved