Sampled data automatic generation control of hydro thermal system considering generation rate constraints: a sensitivity analysis

The main objective of the present work to study the effect of small load perturbation on a multi-area interconnected power system considering all possible constraints in power system. Three thermal areas of reheat turbine either single-stage or two-stage is considered with 10% step load perturbation in all the units for study. This paper focused on the effectiveness of PI and PID controller over conventional I-controller. An attempt is made to investigate the proper values of sampling time period (T) and speed regulation parameter (R i). Further, the effects of variations of reheat gain (K r) and reheat time constant (T r) have been explored. The performance of single-stage and two-stage turbine has been investigated with PID and PI controllers. The dynamic responses are studied in MATLAB-SIMULINK environment.

Gaining improved performances of agc in a multi- area power system with all possible constraints by changing the effect of turbines and controllers

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Gaining improved performances of agc in a multi- area power system with all possible constraints by changing the effect of turbines and controllers