| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an abnormality diagnostic apparatus which detects abnormality in module units of a photovoltaic power generation system. <P>SOLUTION: The abnormality diagnostic apparatus comprises: a power generation output data storage unit 102 which stores a value of electric power output from a string 302; a module position data storage unit 101 which stores position data on the power generation module 301; an output characteristic model storage unit 103 which stores output characteristic models of respective power generation modules 301; an output sunshine state estimation unit 105 which estimates sunshine states by the power modulation modules 301 from the electric power value output from the string 301 and the output characteristic models; a storage unit 104 which stores the estimated sunshine states; a sunshine state space correction unit 106 which corrects the sunshine states stored in the storage unit 104; and a power generation output abnormality diagnostic unit 107 which calculates expected output electric power by the power generation modules 301 from the corrected sunshine states and output characteristic models, and compares them with the electric power abnormality diagnostic apparatus value output from the string 302 to diagnose abnormality for every power generation modules 301. <P>COPYRIGHT: (C)2012,JPO&INPIT |
