Techno-economic feasibility study of autonomous hybrid wind/PV/battery power system for a household in Urumqi, China

In this paper, based on renewable energy resources and load data research, a techno-economic feasibility study of an autonomous hybrid wind/photovoltaics (PV)/battery power system for a household in Urumqi, China, has been form carried out using Hybrid Optimization Model for Electric Renewables (HOMER) simulation software. The effects of ambient temperature, the variation of load and PV module tilt angles are considered in this simulation. The hybrid wind/PV/battery system with 5 kW of PV arrays (72% solar energy penetration), one wind turbine of 2.5 kW (28% wind energy penetration), 8 unit batteries each of 6.94 kWh and 5 kW sized power converters comprises an optimal power system for the household; it reduces the total net present cost (NPC) about 9% and 11% compared with PV/battery and wind/battery power systems, which has a similar consequence for the levelized cost of energy (COE). The economical, sensitivity and PV module tilt angle analyses of the proposed hybrid wind/PV/battery power system are discussed in this paper.