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Computer-implemented system and method for correlating overhead sky clearness for use in photovoltaic fleet output estimation
Computer-implemented system and method for correlating overhead sky clearness for use in photovoltaic fleet output estimation
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机译:关联用于光伏车队输出估计的头顶天空清晰度的计算机实现的系统和方法
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摘要
A computer-implemented system and method for correlating overhead sky clearness for use in photovoltaic fleet output estimation is provided. A temporal distance that includes a physical distance between two locations, which are each within a geographic region suitable for operation of a photovoltaic fleet, is determined in proportion to cloud speed within the geographic region. A set of input sky clearness indexes is generated as a ratio of each irradiance observation in a set of irradiance observations that has been regularly measured for one of the locations within the geographic region, and clear sky irradiance. A clearness index correlation coefficient between the two locations is determined as an empirically-derived function of the temporal distance. The set of input sky clearness indexes is weighted by the clearness index correlation coefficient to form a set of output sky clearness indexes, which indicates the sky clearness for the other of the locations.
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