Abstract: A method for optimizing a photovoltaic system is provided. The method aims at an optimal system revenue rather than power generation. In the method, parameters including a type of the photovoltaic module, a type of the inverter, a manner in which the photovoltaic module is arranged, and a type of the photovoltaic bracket, the capacity ratio of the photovoltaic module, a system cost, a financial cost, and cost operation and maintenance are taken into consideration for iteration with an inclination angle as the iteration variable when performing automatic optimization, to determine a final configuration of the photovoltaic system.

Abstract: Enclosed is an electrode for a flow battery, which comprises a graphite felt (1), wherein: said graphite felt includes multiple flow channels (2) for transmitting an electrolyte, said flow channels (2) are straight and distributed at equally spaced intervals, and the width and depth of said channels (2) and the interval between adjacent flow channels (2) are each half of the thickness of the graphite felt (1), which is a polyacrylonitrile graphite felt (1). Said flow battery electrolyte has a simple structure and is easily processed and assembled, the flow battery thickness and internal resistance are low, and transmission and dispersion of the electrolyte is highly effective. Flow batteries using said electrode enjoy high power density, high energy efficiency, long life, and can be made into high-power or even super-high-power flow batteries.