Load equipment and control method for testing anti-islanding function of distributed generation system

A load equipment and control method for testing anti-islanding function of distributed generation system are provided to modularize a resistance, a reactor and a capacitor per a unit. The output(330) of the device under test(470) is connected to the AC power supply simulator(230) by using the first switch(240). The output of the device under test is connected to the electronic load(620) by parallely using the second switch(250). The separate external power supply is supplied through the transformer(680) for the systematic power(600) of the low pressure and insulation in order to drive the AC power supply simulator and electronic load. The voltage(460) of the electric power system is supplied to the output of the electronic load. The load controller(640) and input unit(660) are used in order to control the load device. The electronic load device controller(630) is installed inside the electronic load device.