Prototype measurement system information correlation with LLS data

Inhalt:
This paper focuses on analyzing the temporal and spatial correlation between data obtained from a lightning location system and a prototype lightning current waveform measurement system installed on a wind turbine in Croatia. The prototype contains two Rogowski coils with varying frequency and amplitude ranges to efficiently capture continuing currents, continuing-current impulses, and return strokes. In this study, several lightning events detected by the lightning location system in the wind turbine area and measured by the prototype are correlated based on their timestamps. Specif-ically, stroke locations determined by the lightning location system for these events are analyzed with respect to wind turbine collection zones, and their GPS timestamps are compared to those determined by the prototype measurement system. For one lightning event, the high-speed camera data is also used for event confirmation. Frames of the strokes from that particular lightning event, with precise GPS timestamps, are presented. The high-speed camera is GPS synchro-nized independently from the prototype measurement system. Additionally, the prototype system registers lightning flashes, i.e., strokes hitting two neighboring wind turbines that share the same cable connection to the local substation as the one on which the prototype waveform lightning current system is installed. Strokes to neighboring wind turbines are also discussed in paper by analyzing prototype timestamps and lightning location system timestamps and amplitudes, focusing on one particular lightning event.