An evaluation of resource for pumping water with electricity generated by wind energy in area of agriculture and husbandry in Ningxia

In this paper，the variety of wind speed is analyzed by using wind data in arid grassland and irrigated newly cuhivated land at Guangwu in the center of Ningxia．The densities of wind energy，the hours of effective wind speed，the kilowatt-hour of electricity generated by wind energy，the mas of water pumped by electricity energy，the posible amount and area of irrigation in different seasons are estimated．The results show that the annual average density of effective wind energy is 120W／m²，which meets the requirements of the general area coverage in the national wind energy division．The annual mean reserves of wind energy and hours of effective wind speed accumulated for 3～20 m／s are 562kW ·h／m² and 4680h respectively，which belongs to the sections available for wind energy in the national wind energy division，and suitable for miniature design of wind power electric generator usable for pumping water and irrigation in miniature farms，but not for installation wind power electric generator set．A 2kW electric generator can pump water for 2．0～5．2m³／h and irrigate 2～7hm² in growing season in Guangwu，which meets the requirements of electricity energy and water for people and livestock in the center of Ningxia．