Title:
太陽光発電診断システム及び診断方法
Document Type and Number:
Japanese Patent JP6619185
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a solar battery deterioration diagnosis system that does not require any complicated initial setting and can be implemented in a relatively low cost.SOLUTION: A solar battery deterioration diagnosis system includes a determination device 6 for setting specific one or more strings 1 of plural solar battery strings 1 as a reference string 1a, measuring the generated power amount of the reference string to obtain a unit electric power amount, multiplying the measured unit electric power amount by a preset multiplication factor to multiply the measured unit electric power amount by a predetermined number, thereby calculating a total power generation reference power amount to be compared with the total generated power amount of a photovoltaic power generation system, and comparing the total power generation reference power amount with the generated power amount output by a power conditioner as the total generated power amount of the photovoltaic power generation system at the same time so as to determine the power generation state. When the total generated power amount of the power conditioner 3 is smaller than the total power generation reference power amount by a specific rate km or less, the determination device 6 determines that the power generation amount decreases.SELECTED DRAWING: Figure 1
Inventors:
Hitoshi Nakajima
Application Number:
JP2015183311A
Publication Date:
December 11, 2019
Filing Date:
September 16, 2015
Export Citation:
Assignee:
Kawamura Electric Co., Ltd.
International Classes:
H02J3/38; H02S50/00
Domestic Patent References:
| JP7334767A | ||||
| JP2011035136A | ||||
| JP2010287608A | ||||
| JP2011077477A | ||||
| JP2013080731A |
Foreign References:
| WO2011101916A1 |
Attorney, Agent or Firm:
Yoshiki Ishida