In view of theproblem of high voltage at the end of the lineof urban distribution network due to high cable rate

the method of voltage problem analysis based on cut-through of marketing and power distribution and the method of voltage integrated management based on sequential search are proposed. In this paper

a certain substation and its 10 kV outgoing line in Zhejiang as the study object. With the strong data analysis and visualization function of R language

the marketing and power distribution data is analyzed

the high voltage level of the full year in the area is evaluated

the reactive power voltage adjustment reasonability of the area is analyzed and the influence of power supply capacitance of cable line and reactive power on high voltage of substation. The voltage control method based on sequential search is proposed to coordinate the multi-level voltage control equipment and improve the voltage quality. Finally

an example is given toverifytheeffectivenessoftheproposedmethod.