WANG Li, LUO Jianbin. Experimental Research on Comparison of Fiber Sensing Technology for Urban Power Grid Transmission Cables On-line Monitoring[J]. High voltageapparatus, 2015, 51(7): 63-68+73.
WANG Li, LUO Jianbin. Experimental Research on Comparison of Fiber Sensing Technology for Urban Power Grid Transmission Cables On-line Monitoring[J]. High voltageapparatus, 2015, 51(7): 63-68+73. DOI: 10.13296/j.1001-1609.hva.2015.07.012.
Experimental Research on Comparison of Fiber Sensing Technology for Urban Power Grid Transmission Cables On-line Monitoring
This paper established the optical fiber sensing system of transmission cable temperature measurement
by using different optical fiber sensing principle to meet the measurement demand of different parts of power cable.The experiment was carried out by simulating the targeted test cable tunnel
the experiment showed that the temperature measurement precision of Brillouin measurement system was 2 ℃
Brillouin scattering frequency shift was strictly linear relationship with temperature change
the temperature measurement precision of Raman measurement system was 0.5 ℃. The Raman measurement system is suitable for monitor the cable defect though temperature rise measurement
the Brillouin measurement system is suitable for monitor the current capacity by long distance power cable temperature measurement
the Fiber Bragg Grating system measurement need denoise the thermal expansion.