Two-Stage Fault Diagnosis Method Based on the Extension Theory for PV Power Systems

Table 3

The fault category of the module.

FN1	Normal operation
FN2	The first module occurs 100%–70% covered failure; the other modules are normal
FN3	The second module occurs 100%–70% covered failure; the other modules are normal
FN4	The third module occurs 100%–70% covered failure; the other modules are normal
FN5	The fourth module occurs 100%–70% covered failure; the other modules are normal
FN6	The first module occurs 70%–31% covered failure; the other modules are normal
FN7	The second module occurs 70%–31% covered failure; the other modules are normal
FN8	The third module occurs 70%–31% covered failure; the other modules are normal
FN9	The fourth module occurs 70%–31% covered failure; the other modules are normal
FN10	The first module occurs under 30% covered failure; the other modules are normal
FN11	The second module occurs under 30% covered failure; the other modules are normal
FN12	The third module occurs under 30% covered failure; the other modules are normal
FN13	The fourth module occurs under 30% covered failure; the other modules are normal
FN14	The first module and second module occur under covered failure
FN15	The second module and third module occur under covered failure
FN16	The third module and fourth module occur under covered failure
FN17	The first module and fourth module occur under covered failure