Study on Interface Performance of Fiber Optic Hard Composite Insulator | IEEE Conference Publication | IEEE Xplore

Study on Interface Performance of Fiber Optic Hard Composite Insulator

Publisher: IEEE

Abstract:

Fiber optic composite insulator has the function of online monitoring of insulator operation status and real-time communication. At present, interface problems are common...View more

Abstract:

Fiber optic composite insulator has the function of online monitoring of insulator operation status and real-time communication. At present, interface problems are common in fiber optic composite insulator. Flashover and internal insulation accidents occur during operation, and the operating life is much lower than that of ordinary composite insulator. In this paper, a new design of optical fiber composite insulator is proposed. The cycloaliphatic epoxy resin with good interface performance is used as the coating layer of optical fiber and the housing material of insulator, which reduces the number of interfaces between core- fiber-housing to improve the interface performance of optical fiber insulator. The samples were subjected to a long-term boiling aging test to measure the interface performance gap between the fiber optic hard composite insulator, the silicone rubber fiber optic composite insulator and the ordinary composite insulator by leakage current. Comparing the leakage current measurements, the interface performance of fiber optic hard composite insulator is better than that of ordinary fiber optic composite insulator in the same boiling aging time. The increase of the number of implanted optical fibers has no significant effect on the interface performance. This study shows that by using cycloaliphatic epoxy resin as the coating layer of optical fiber and the housing material of insulator can effectively improve the interface performance, which lays a foundation for long-term operation monitoring in the future.
Date of Conference: 15-18 December 2023
Date Added to IEEE Xplore: 09 May 2024
ISBN Information:
Publisher: IEEE
Conference Location: Hangzhou, China

I. Introduction

As the years of operation increase, the insulating and mechanical properties of composite insulators deteriorate to varying degrees due to the combined effects of UV, temperature, humidity, stress, dirt and other factors, leading to accidents such as broken strings and dropped wires, which seriously affect the safe and stable operation of the power grid [1]–[3]. In China, the performance of online composite insulators is mainly assessed by inspecting the insulators online and taking a small number of insulators for mechanical and electrical performance measurements. Although the commonly used testing methods can assess the condition of insulators to a certain extent, they are more often used as a means to detect the cause of faults [4]–[7].

References

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