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    Failure diagnosis method for photovoltaic power generation system
    1.
    发明授权
    Failure diagnosis method for photovoltaic power generation system 有权
    光伏发电系统故障诊断方法

    公开(公告)号：US09506971B2

    公开(公告)日：2016-11-29

    申请号：US13975826

    申请日：2013-08-26

    申请人： Hitachi, Ltd.

    发明人： Tohru Kohno ,  Akihiro Nakamura ,  Tomoharu Nakamura ,  Koki Morikawa

    IPC分类号： G01R31/00 ,  G01R31/02 ,  H02S50/10

    CPC分类号： G01R31/02 ,  H02S50/10

    摘要： A low-cost failure diagnosis method, without addition of a measuring unit and a communication unit, provided for a solar battery system, of calculating a working temperature and the number of failed solar battery modules in a solar battery array, by calculating a solar radiation amount while updating a predetermined coefficient as a ratio between a short-circuit current and a working current in accordance with state of the solar battery array and using measured data having the working current and working voltage measured with a detection unit.

    摘要翻译： 一种低成本故障诊断方法，通过计算太阳能辐射来计算太阳能电池阵列中的太阳能电池模块的工作温度和数量，而不添加用于太阳能电池系统的测量单元和通信单元 根据太阳能电池阵列的状态更新作为短路电流与工作电流之间的比例的预定系数，并使用利用检测单元测量的具有工作电流和工作电压的测量数据。