Frequency-Bias Tie-Line Control of Hydroelectric Generating Stations for Long Distances

In this work I have tried to apply effective dedicated online control systems to two equal power systems connected by a long distance tie-line. When large interconnected systems are linked electrically to others by means of tie-lines, the power transfers between them are usually decided by mutual agreement and the power is controlled by regulators. Other side it is a desired feature to achieve a better frequency constancy, which has been obtained by a controller, which is being activated by frequency -bias constant. A power frequency characteristic also has been maintained approximately straight line by governor speed regulation parameter in case any perturbation in frequency is caused by load change in any one of the area.To maintain the real power flow and single frequency in tie-line power system, the governor has been manipulated by Automatic Generation Control (AGC) action. For this works various, integral (I) proportional plus integral (PI) and proportional plus integral plus derivative (PID) controllers have been tried.