Guarantee the power quality

smart grid construction

is the inevitable developing trend of power grid. Evaluation of power grid reactive power regulation and control ability to determine the scope of the mark for the reactive power control

power grid is automatic voltage control key. The average value of power factor

which is adopted to establish the space grid connection model

gets the power factor with provincial power grid under the load level curve. And the hierarchical voltage control schemes are introduced

the minimum system network loss as the goal of optimal power flow calculation

and the engineering automatic voltage control effectiveness is verified.