In the distribution network

due to uncertainty of load

low voltage line often occur such case as insufficient reactive power compensation or over-compensation at Min and Max load

leading line loss increased.In this paper

a kind of fuzzy control method for reactive power compensation is proposed

which considers variation load at present and in 2 hours within one day and expresses it with time information.The input of fuzzy controller are time information and power factor

while the signal is used to control switching of shunt capacitor bank.The fuzzy controlled is achieved and used at certain low voltage distribution area through Labview.It is shown by the analysis result that the method can reduce switching numbers and get better compensation result.