METHOD AND APPARATUS FOR VERIFYING RELIABILITY OF SENSING VALUES FOR FAULT DIAGNOSIS OF GRID-CONNECTED INVERTER

A method of verifying reliability of sensing values may include obtaining inverter voltage sensing values and grid voltage sensing values, calculating voltage sensing value deviations based on differences between the inverter voltage sensing values and the grid voltage sensing values, and determining a voltage sensing value reliability level based on the voltage sensing value deviations and a reliability reference value for voltage sensing values.