Method and device for detecting PV modules with power loss in a PV assembly

摘要

The method involves measuring direct current by test specification unit (M1-M10) by respective stationary current sensor (N1-N8). The reference current measuring device (3) is detected. The difference between current values measured by current sensor and reference current measuring device is evaluated. The evaluation process is repeated for every test specification units. The evaluated differences of arbitrary two photovoltaic modules are linked with one another in preset ratio. The efficiency of the test specification units is determined by linked data. An independent claim is included for device for determining power loss.