Abstract: Low voltage distribution panels on offshore platforms are prone to frequent arc faults under harsh operating conditions of high humidity, heavy salt spray, and continuous vibration environments. However, arc fault detection technology can effectively detect faults. Based on arc fault detection technology, this study analyze the detection difficulties of four typical types of arc faults in the special environment of offshore platforms, and specifically elaborate on the sensor layout scheme, criterion coordination logic, and key setting parameters of arc fault detection technology in various scenarios such as bus short circuit, poor contact, insulation breakdown, and switch abnormal disconnection. The results will be verified through engineering application effects. The results show that the arc fault detection technology has a protection action time of about 1～2 ms in the scenario of bus short circuit, which greatly improves the response speed compared to traditional overcurrent protection; Early warning of faults can be achieved in scenarios with poor contact; The protection action time in the insulation breakdown scenario is controlled at about 4 ms; In the scenario of abnormal switch disconnection, the actual arc energy can be reduced to within about one-third of the thermal tolerance limit of the arc extinguishing chamber, which has important engineering application value for improving the safety and reliability of the low-voltage distribution system on offshore platforms.