Research Article

A Photovoltaic Array Fault Diagnosis Method Considering the Photovoltaic Output Deviation Characteristics

Table 2

Settings of different failure.

Type of failureSetting of failureRemarks

Normal
AgingA series of 8 Ω resistors in a PV array
ShadingUsing an opaque cardboard to block a part of the PV module in an arrayBlocking the half of 4 modules in an array
Open circuitDisconnecting a module’s cable in a PV array