Abstract
In order to overcome the on-line monitoring system's technical problems for polluted insulators, which are susceptible to EMI(electromagnetic interference), on-site power supply required, poor accuracy and low reliability, this paper proposes an insulator surface ESDD (equivalent salt deposit density) detection scheme for contamination measure based on high humidity-sensitive PI-FBG (Fiber Bragg Grating coated by polyimide) sensor. First of all, through theoretical analysis and experimental verification, and based on the exploration of several aspects—PAA (polyamic acid) solution concentration, viscosity, PI (polyimide) film thickness — a high humidity-sensitive PI-FBG sensor was developed. Then, The ESDD sensing experiment was carried out based on the developed high humidity-sensitive PI-FBG. Finally, to test the sensor's stability and life length, performance experiments were repeated after 6months from the time when the sensor was manufactured. By the developed high humidity-sensitive PI-FBG sensor and its result of experiment on salt sensitivity, the PI-FBG sensor was proved that, with its good stability, it can be used for the ESDD detection on the surface of insulator in the future.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
