Modified P-Q Control Algorithm of Shunt Active Power Filter to Reduce Harmonics, Voltage Regulation, Power Factor Correction and Unbalanced Load for Hydro Electric Power Plant

Power system harmonics, poor power factor, and unbalanced load are different and prominent problems in modern power networks. Also, for the standalone mode, voltage regulation is the major problem to tackle. It is always challenging to perform all corrective operations at once, but since these problems are theoretically correlated, one new algorithm is possible. Many techniques are available to solve these issues, but the complexity and lack of a single technique to solve these problems simultaneously have motivated this present work. An attempt is made to mitigate harmonics, correct the Power Factor (PF), and improve voltage regulation under balanced and unbalanced load conditions with a single and simple control technique using Shunt Active Power Filter (SAPF) based on p-q theory. Details of Self-Excited Induction Generator (SEIG) are discussed in this chapter. 2.2 kW SEIG has been considered for Hydro- electric power plant. The mathematical formulation is done and tested in the MATLAB environment, and the results are convincing and satisfactory.