Recently, HV HIPOT completed the on-site delivery, commissioning and operation training for the PDL-OL overhead line partial discharge dual-end positioning system provided to the power operation and maintenance customers in Sichuan. The entire equipment successfully passed on-site verification and was put into operation for monitoring insulation hazards in distribution lines.
In response to the operational pain points of 3-35kV overhead distribution lines, PDL-OL adopts dual-end traveling wave time difference positioning technology, relying on high-precision timing from Beidou + GPS, to achieve nanosecond-level time synchronization. It can conduct live detection without power outage and has a positioning accuracy of up to 10 meters. The equipment has a protection level of IP67 and can withstand complex environments such as outdoor wind and rain, temperature differences, etc. It can accurately capture concealed partial discharge signals such as insulator deterioration, line clamp joints, and conductor damage, automatically complete defect identification and classification warning, and the accompanying analysis software can retain waveform data and generate inspection reports, supporting the operation and maintenance personnel to shift from post-incident repair to condition-based maintenance.
In the on-site service， technical engineers， in combination with the local distribution line conditions in Sichuan， explained the practical key points such as sensor layout， parameter setting， interference identification， and background data analysis， and simultaneously answered operational challenges such as long-distance branch line detection and on-site noise suppression， ensuring that the team can independently carry out regular partial discharge inspections.
Deeply engaged in the field of high-voltage testing， we continue to focus on the demand for digital operation and maintenance of distribution networks， and have created full-scenario partial discharge detection solutions for cables， switch cabinets， and overhead lines. With stable hardware performance and on-site one-stop technical services， we have built a solid defense line for distribution network safety for various power operation and maintenance units.
Post time: Nov-12-2026