The wide area voltage control is achieved by the automatic voltage control（AVC） system through adjustment of the tap changer of on load transformer（OLTC） and capacitor bank. In this paper

a kind of interactive assessment frame of AVC control result based on double-close-loop control strategy is proposed

the power grid operation at the actual area is simulated by the use of comprehensive simulation procedure of ADPSS power system

the loop operation is achieved with the tested AVC system under simulation mode. The flow result of the most optimal limit is introduced as the assessment standard

the complete assessment index system of AVC control result is set up

the assessment platform based on real time operation is set up

which can achieve the loop assessment of the control strategy of AVC system. In addition

the case detection library based on the actual operation condition of system is established to achieve the control strategy assessment under various operation modes. It is shown by the test result that the assessment frame demonstrates excellent operation robustness of the AVC system at different modes.