Title:
DETERMINATION DEVICE AND DETERMINATION METHOD
Document Type and Number:
Japanese Patent JP2023009777
Kind Code:
A
Abstract:
To improve the abnormality determination accuracy of a photovoltaic power generation system.SOLUTION: A determination device is used in a photovoltaic power generation system including a plurality of power generation units containing solar cell panels and a power conversion device connected to the plurality of power generation units, and includes an acquisition unit that acquires measurement information indicating a measurement result of an output current and an output voltage of each of the power generation units, a period determination unit for performing temporary determination on a suppression period of an output power by the power conversion device based on the output voltage indicated by the measurement information acquired by the acquisition unit, and performing full determination on the temporarily determined suppress period based on the output voltage of each power generation unit during the temporarily determined suppression period and the output voltage of each power generation unit at a timing which is not contained in the suppression period, and an abnormality determination unit for determining an abnormality of the power generation unit based on the output current of each power generation unit in the suppression period fully determined by the period determination unit.SELECTED DRAWING: Figure 7
Inventors:
TANIMURA KOTARO
ASAO YOSHIHISA
NAKAGAWA KAZUMI
ASAO YOSHIHISA
NAKAGAWA KAZUMI
Application Number:
JP2021113342A
Publication Date:
January 20, 2023
Filing Date:
July 08, 2021
Export Citation:
Assignee:
SUMITOMO ELECTRIC INDUSTRIES
International Classes:
H02S50/00; H02J3/38
Attorney, Agent or Firm:
Patent Attorney Corporation Wandy IP Partners
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