COMPENSATION ALGORITHM OF CCVT'S SECONDARY VOLTAGES

摘要

A method of compensating a secondary voltage of a CCVT is provided to reduce an output voltage error of the CCVT by using a secondary voltage compensating algorithm, thereby improving the performance of a relay. A secondary voltage value of a CCVT(Coupling Capacitor Voltage Transformer) is input. A secondary current is calculated from the secondary voltage value, and a primary current value is calculated by using the secondary current value and a winding ratio. A primary capacitor voltage and a primary inductor voltage are calculated by using the primary current value. A power line voltage is calculated by using the primary capacitor voltage and the primary inductor voltage.