An interval type-2 fuzzy logic controller for TCSC to improve the damping of power system oscillations

• Published in: Frontiers in Energy Vol. 7; no. 3; pp. 307 - 316
• Main Authors: PANDA, Manoj Kumar, PILLAI, Gopinath, KUMAR, Vijay
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Higher Education Press 01.09.2013; Springer Berlin Heidelberg; Springer Nature B.V
• Subjects: Analysis; Control systems; Controllers; Damping; Electric utilities; Electronics; Energy; Energy management; Energy Systems; Fuzzy control; Fuzzy logic; Fuzzy set theory; Fuzzy sets; interval type-2 fuzzy logic controller (IT2FLC); Intervals; Mathematical models; power system oscillations; Research Article; Studies; Swarm intelligence; Systems stability; TCSC; thyristor controlled series capacitor (TCSC); Transmission lines; type-2 fuzzy logic system; 串联电容器; 二型模糊集; 控制器设计; 模糊逻辑控制器; 电力系统振荡; 阻尼控制器; interval type-2 fuzzy logic controller (IT2FLC); power system oscillations; thyristor controlled series capacitor (TCSC); type-2 fuzzy logic system
• ISSN: 2095-1701; 2095-1698
• DOI: 10.1007/s11708-013-0269-3

In this paper an interval type-2 fuzzy logic controller (IT2FLC) was proposed for thyristor controlled series capacitor (TCSC) to improve power system damping. For controller design, memberships of system variables were represented using interval type-2 fuzzy sets. The three-dimensional membership function of type-2 fuzzy sets provided additional degree of freedom that made it possible to directly model and handle uncertainties. Simulations conducted on a single machine infinite bus (SMIB) power system showed that the proposed controller was more effective than particle swarm optimization (PSO) tuned and type-1 fuzzy logic (T1FL) based damping controllers. Robust performance of the proposed controller was also validated at different operating conditions, various disturbances and parameter variation of the transmission line parameters.