నైరూప్య

AGC AND AVR OF MULTI AREA POWER SYSTEMS WITH AND WITHOUT GRC NONLINEARITY

M. Nagendra, Dr. M.S. Krishnarayalu

A three area power system with Generation Rate Constraints (GRC) nonlinearity and a four area power system without GRC nonlinearity are considered. Load frequency and voltage control problems are studied with Automatic Generation Control (AGC) and Automatic Voltage Regulator (AVR) respectively using PID and fuzzy logic controllers for these Multi Area Power Systems (MAPS). The study shows that PID controller is more effective than fuzzy logic controller. For MAPS with GRC nonlinearity the system settles quickly with less peak overshoot when PID controller is used. For MAPS without GRC nonlinearity the system settles quickly when PID controller is used, even though the peak overshoot (undershoot) is more.