Method for detecting partial discharge direction of compound eye type optical fiber EFPI
A partial discharge and direction detection technology, applied in the direction of testing dielectric strength, voltage/current isolation, etc., can solve the problem of partial discharge detection that is not suitable for high-frequency and fast detection, the sensitivity of the Michelson method detection system is not high, and the demodulation frequency response is not enough Advanced problems, to achieve the effect of good directionality, strong anti-interference ability and high sensitivity
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[0033] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0034] figure 1 It is a schematic diagram of the structure of the compound-eye optical fiber EFPI partial discharge direction detection system. Such as figure 1 As shown, taking a monochromatic light source with a wavelength of 1310nm as an example, a compound-eye optical fiber EFPI partial discharge direction detection system, the system structure is:
[0035] 1) A monochromatic light source with a wavelength of 1310nm is obtained by filtering the narrowband light source 1 through an optical fiber filter to obtain a monochromatic wavelength light source. The narrow-band light source 1 is an SLED light source, and the filter is a 1310nm optical fiber band-pass filter.
[0036] 2) The optical fiber is a 1310nm single-mode optical fiber, the diameter of the central glass core is 9um, and the outer diameter of the cladding is 125um. After testing, it i...
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