AUTOMATIC MEASUREMENT AND COMPENSATION SYSTEM OF HIGH VOLTAGE REACTIVE POWER

There are a lot of harmonic disturbances in the power supply system of large scale power electronics setup.The harmonic disturbances result in difficulties to measure the power factor and to compensate the reactive power.This paper presents a new automatic measurement and compensation system of high voltage reactive power.The power factor can be measured accurately by digital filter of current waveforms and the reactive power can be compensated by non linear control.Experiments have proved that the system is stable and reliable.