This paper describes an optical voltage transducer （OVT） for the 35 kV electric power system based on modular interference in dual-mode highly elliptical-core polarization maintenance fiber （E-Core PMF）. The tempe...This paper describes an optical voltage transducer （OVT） for the 35 kV electric power system based on modular interference in dual-mode highly elliptical-core polarization maintenance fiber （E-Core PMF）. The temperature and environmental perturb- bation can be compensated automatically. In the scheme, a quartz crystal cylinder wrapped with highly elliptical-core fiber plays the role of voltage sensor head. The two interference output lobes＇ intensity from the E-core PMF is modulated with the converse piezoelectric effect of quartz crystal. A PZT wrapped with E-core PMF at ground potential serves as the static modular phase difference control and temperature compensation unit. The experiment results indicate that the OVT designed in this paper has satisfying performance and could successfully rejects the temperature perturbation.展开更多
基金supported by the National Natural Science Foundation of China under Grant No. 50477001.
文摘This paper describes an optical voltage transducer （OVT） for the 35 kV electric power system based on modular interference in dual-mode highly elliptical-core polarization maintenance fiber （E-Core PMF）. The temperature and environmental perturb- bation can be compensated automatically. In the scheme, a quartz crystal cylinder wrapped with highly elliptical-core fiber plays the role of voltage sensor head. The two interference output lobes＇ intensity from the E-core PMF is modulated with the converse piezoelectric effect of quartz crystal. A PZT wrapped with E-core PMF at ground potential serves as the static modular phase difference control and temperature compensation unit. The experiment results indicate that the OVT designed in this paper has satisfying performance and could successfully rejects the temperature perturbation.
