Ningxia Yinxing Energy Wuzhong City Sunjiatan 20MWp photovoltaic grid-connected wind power project is located near the south of Ningxia Wuzhong City Sunjiatan Comprehensive Development Zone, where the geography coordinate is N37 ° 32 ′ 4.95 ″, E106 ° 12 ′ 50.45 ″, altitude is1322M ~ 1358m, overall flat, passing through by 109 National Highway, 101 provincial highway, Huangtong highway,Shizhong and Zhonghao Expressway and so on , so that the traffic is convenient. The power station is a high voltage of grid-connected photovoltaic power station invested by Ningxia Yinxing Energy, with 20MWp of final capacity, using the scheme of Block generation, centralized grid.The total installed capacity is 20228.16MWp, wherein the PV assembly select 240Wp polysilicon component capacity. According to different components and installation mode，the system is divided into 20 of 1MWp of PV grid-connected power generation unit, respectively combined to the grid through 0.27Kv/35kV electric power transformation and distribution device , and ultimately the whole photovoltaic grid-connected power system is combined to the 35kV AC power grid; in accordance with the design of 20 1MWp photovoltaic grid-connected power generation unit, each 1MWp power generating unit use 2 of 500kW photovoltaic grid-connected inverter.