Abstract
The main objective of Automatic Generation Control (AGC) is to balance the total system generation against system load and losses so that the desired frequency and power interchange with neighbouring systems are maintained. Any mismatch between generation and demand causes the system frequency to deviate from its nominal value. Thus the high frequency deviation may lead to system collapse. Therefore, it is necessary to include the active controller as Superconducting Magnetic Energy Storage Units (SMES) to maintain the nominal system frequency. This paper presents the application of energy storage units in an interconnected two area hydropower system. The proposed work consist of two area interconnected hydro power system with Superconducting Magnetic Energy Storage units has been designed to improve the dynamic performance of the system and also Integral Square Error (ISE) technique is used to obtain the optimal integral gain settings. The simulation result shows that the Load Frequency Control in an interconnected hydro power system with SMES units is considerably improved the system dynamics such as peak overshoot, settling time and frequency oscillation as compared to that of the system without SMES units. The system simulation realized by using MATLAB software.Key words: Automatic Generation Control, Load Frequency Control, Energy Storage Units, SMES unit, System dynamics, Hydro Power System
Highlights
Automatic Generation Control (AGC) or Load Frequency Control (LFC) is a very important factor in power system operation and control for supplying sufficient and reliable electrical power to consumer with good quality
Controlling the frequency has always been a major subject in electrical power system operation and is becoming much more significant recently with increasing size, changing structure and complexity in interconnected power systems
Where: ∆Edi (s) = Converter voltage deviation applied to inductor in Superconducting Magnetic Energy Storage Units (SMES) unit KSMES = gain of control loop SMES Tdci= convertor time constant in SMES unit USMES = control signal of SMES unit Kid= gain for feedback ∆Id in SMES unit ∆Idi (s) = inductor current deviation inSMES unit
Summary
Automatic Generation Control (AGC) or Load Frequency Control (LFC) is a very important factor in power system operation and control for supplying sufficient and reliable electrical power to consumer with good quality. A fuzzy logic controller for AGC in an interconnected thermal power system including SMES units has been studied (Demiroren and Yesil, 2004). A simulation model for load frequency control in an interconnected hydro power systems using fuzzy PID controller is presented and proved
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