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发明公开
CN108649892A 光伏电站的缺陷诊断方法及装置 有权

光伏电站的缺陷诊断方法及装置
摘要：
本发明提供了一种光伏电站的缺陷诊断方法及装置，其中，该方法包括：采集待诊断光伏电站运行过程中的测试数据；根据测试数据，确定待诊断光伏电站年效能PR值，待诊断光伏电站的每一发电单元的PR值，以及每一发电单元包括的组成部件的PR值、加权效率、并联失配损失或串联失配损失；基于PR评价阈值模型，根据待诊断光伏电站PR值、待诊断光伏电站的每一发电单元的PR值，以及每一发电单元包括的组成部件的PR值、加权效率、并联失配损失或串联失配损失，对待诊断光伏电站进行逐层诊断定位缺陷；所述PR评价阈值模型基于光伏电站现场实测数据预先确定。上述技术方案实现了从运行层面对光伏电站的缺陷检测，提高了光伏电站缺陷诊断的效率。
摘要（英）：

The invention provides a defect diagnosis method and device for a photovoltaic power station. The method includes the following steps: collecting test data during the operation of a photovoltaic powerstation to be diagnosed; according to the test data, determining an annual performance PR value of the photovoltaic power station to be diagnosed, a PR value of each power generation unit of the photovoltaic power station to be diagnosed, and the PR value, weighting efficiency, parallel mismatch loss or series mismatch loss of components included in each power generation unit; and diagnosing positioning defects of the photovoltaic power station to be diagnosed layer by layer based on a PR evaluation threshold model and according to the PR value of the photovoltaic power station to be diagnosed, the PR value of each power generation unit of the photovoltaic power station to be diagnosed, and the PR value, weighting efficiency, parallel mismatch loss or series mismatch loss of the components included in each power generation unit, wherein the PR evaluation threshold model is predetermined based on actual measured data of the photovoltaic power station on the scene. According to the above technical scheme, the defect detection of the photovoltaic power station from the operation level can be implemented, and the efficiency of defect diagnosis of the photovoltaic power station can beimproved.

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