This article examines the characteristics of transient voltage in long-distance cables in the subsea environment. The effects of changes in temperature and pressure (caused by changes in the ocean depth) on the transient voltage in cables were quantitatively analyzed. To interpret the characteristics of transient voltage, the transmission line was equalized as a π-type circuit, and the effects of inductance, resistance, and capacitance (L, R, and C) according to the changes in temperature and pressure were mathematically modeled. Thus, we confirmed that the effect of temperature on transient voltage generated in cables is approximately 10-fold greater than the effect of pressure. Furthermore, using a fast Fourier transform analysis, we verified that the rate of change in the conducted noise caused by transient voltage generation is 0.001 dB/°C. Thus, through this study, we were able to quantitatively identify the effects of the subsea environment on conducted noise generation in cables.
Conducted noise and transient voltage in a subsea cable
2017-02-01
8 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch