Key Design Technologies Of Mountain Photovoltaic Power Plant

With the rapid development of our society,the pollution problem of traditional energy sources has become serious.In order to protect the environment and promote the sustainable development,renewable energy has gradually become the main choice of energy development in many countries.As a new way of generating electricity,solar photovoltaic power generation has received more and more attention due to its advantages of environmental friendly and simple production.China has built a large number of ground photovoltaic power stations in the vast western region.Due to the inability of the local power grid to absorb and deliver excess electrical energy,this situation has directly led to the abandonment rate of PV power reaching over 25%.As a result,the eastern region,which has a greater demand for electricity,has become the main battlefield of the photovoltaic industry.Subject to the shrinking land resources,many regions have begun to build photovoltaic power stations on mountains,wastelands and other areas.Various complex forms of photovoltaic power stations will be built more and more due to land resource constraints.The power station encountered many technical problems during the design and construction process.The traditional design ideas are not suitable in the design of complex mountain photovoltaic power stations because they cannot maintain the optimal economic operation of mountain PV power stations.From the perspective of economics,the paper will study the optimization design of mountain photovoltaic power station arrays,equipment selection,and power generation unit planning and design,and propose their own optimization solutions as listed below:(1)This paper uses SketchUp software to model the mountain,avoid the shadow area of the mountain,reasonably select the available blocks,and propose the principles and methods of block division and use.(2)This paper uses PVsyst software to perform scenario and array modeling to complete power generation data simulation.The financial indicators of different array layout azimuth and inclination schemes were measured by using the economic evaluation software of Mulianneng Optoelectronics Engineering,and the optimal scheme design was assisted from the perspective of economics.(3)Based on the current and future trends of crystalline silicon price as the analysis basis,this paper evaluates the system economics of monocrystalline silicon and polycrystalline silicon photovoltaic module solutions.(4)This paper uses the cyclic exhaustive method to find the system capacity ratio at the lowest system cost.(5)This paper uses the pressure drop constraint radius for power generation unit planning and equipment layout design,which can ensure that the voltage drop loss of DC and AC cables is controlled within 2%and 3%,which reduces the voltage drop loss caused by array dispersion in mountain photovoltaic power stations.The significance of this thesis is to provide a new design idea for complex mountainous photovoltaic power stations,closely combine the layout characteristics of mountain with the design of photovoltaic power stations,and expand the horizon of initial investment to the evaluation of the entire life cycle economy.