The single star double bridging differential mode is selected as the wiring mode of shunt capacitor bank at low voltage side of Huxi substation through comparison and analysis of common wiring mode of shunt capacitor bank. The main parameters of shunt capacitor bank at Huxi substation are analyzed and calculated based on the reality of project and the overall design scheme of the device is given. As for two schemes of serial and shunt design inside the bridge arm of double bridge differential wiring

the simulation comparison is made and

finally

the mode of ‘two parallel three series three branch’which is more suitable for the actual situation of Huxi substation is selected. In this paper

the attention issues of the device in the maintenance of the substation are proposed from the point view of operation and maintenance after project construction.