Single Area Load Frequency Control using Fuzzy-Tuned PI Controller

This study aims to develop a Load Frequency Control (LFC) for a single area power system using a fuzzy logic tuned PI controller. A deviation of frequency value from the standard (+/- 0.5Hz) arises when real power generation fails to supply demand along with network losses. Various LFC studies have been done exploiting control strategies ranging from classical control schemes to soft analysis techniques. In this proposed study system dynamics is modeled in MATLAB Simulink. Conventional PI controller is designed and tuned with two techniques: using Ziegler Nichols (ZN) tuning and PID tuner app from MATLAB control system toolbox. Intelligent analysis tool, fuzzy logic, is used for performance improvement of the developed controller. Incorporation of advanced tools and optimization techniques improves control response time allowing fast recovery of the system during disturbances and reducing system down time. The result of this work improves system performance and it is tested on 14bus system under different condition.