Indian Journal of Science and Technology
Year: 2015, Volume: 8, Issue: 32, Pages: 1-8
T. Saravanan1*, V. Srinivasan1 and G. Saritha2
Reactive power compensation is an important aspect in the control of distribution systems. Reactive current in addition to increasing the distribution system losses, introduces various power quality problems like, harmonics, voltage sag, swell and poor load power factor. These power quality issues result in the malfunction of sensitive equipments. A Distribution Static Compensator (DSTATCOM) proves to be a viable solution for the mitigation of such power quality issues. The aim of this paper is to compare an optimized PI and a Fuzzy controlled DSTATCOM for reactive power compensation and harmonic mitigation. Here the PI controllers are first optimized by using error minimization criteria through Genetic algorithms and then replaced by a Fuzzy controller. Through various simulations it is concluded that the transient response of fuzzy controllers is better than the optimized PI controllers
Keywords: Decoupled Current Control, Distribution Static Compensator (DSTATCOM), Fuzzy Logic Controllers, Genetic Algorithms, Integral Square Error (ISE), Power Quality
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