TY - JOUR
AU - Jin, Baoquan
AB - In this paper, a fiber-optic distributed detection method for ultrasonic signals generated by partial discharge in cables is explored. By combining frequency division multiplexing (FDM) technique, the frequency response bandwidth of the distributed fiber acoustic sensing (DFAS) system based on phase sensitive optical time-domain reflectometry (Φ-OTDR) is significantly enhanced. A high voltage test system incorporating a defective XLPE cable model is constructed to evaluate the performance of the FDM-DFAS in detecting partial discharge. Experimental results demonstrate that within a sensing distance of 5km, the FDM-DFAS system successfully located partial discharge events occurring at the 4km mark and reconstructed ultrasonic signals at 27.1kHz. Furthermore, by generating phase-resolved partial discharge (PRPD) patterns and φ-Q-n three-dimensional statistical graphs, a comparative analysis of the discharge characteristics between the inception and final stages of partial discharge is conducted. This analysis encompasses indices such as discharge intensity, phase distribution, and discharge rate. The FDM-DFAS sensing system provides a reliable and effective method for distributed detection of partial discharge across the entire range of cables.
TI - Deployment of phase sensitive optical time-domain reflectometry for acoustic emission detection of partial discharge in XLPE cables
JF - Proceedings of SPIE
DO - 10.1117/12.3055460
DA - 2025-02-25
UR - https://www.deepdyve.com/lp/spie/deployment-of-phase-sensitive-optical-time-domain-reflectometry-for-wgWcVpsh6t
SP - 135420X
EP - 135420X-5
VL - 13542
IS - 
DP - DeepDyve
ER -