Voltage is one of the important indexes of power quality and bad quality of voltage will seriously affect the safety and stability of power system operation.In this paper

the factors influencing the bus voltage are analyzed

and as for the problem of bus voltage exceeding upper limit

the solution of adopting magnetically controlled reactor for regulation is proposed and the implementation result is verified through specific project application and test data.It is shown by the result that reasonable selection for parameters of magnetically controlled reactor and control strategy and provision of corresponding control device can play the role of regulating bus voltage.