A trigger optical cable used in the field of UHV power transmission

Abstract

Provided is a trigger optical cable applied to the field of ultra-high voltage power transmission. The trigger optical cable applied to the field of the ultra-high voltage power transmission comprises a core layer, a wrapping layer, a coating layer, a tight wrapping layer, a reinforced layer and an outer protective layer from inside to outside in sequence. The core layer is of a solid structure, the wrapping layer wraps the outer wall of the core layer, the coating layer wraps the outer wall of the wrapping layer, the tight wrapping layer wraps the outer wall of the coating layer, the reinforced layer wraps the outer wall of the tight wrapping layer, and the protective layer wraps the outer wall of the reinforced layer. The tight wrapping layer is made of Hytrel materials of flame-retardant level, the outer protective layer is made of fluoroplastics, the reinforced layer is filled with aramid fibers, and the refractive index of the core layer is larger than that of the wrapping layer. The trigger optical cable applied to the field of the ultra-high voltage power transmission does not influence the transmission performance of the optical cable in the near-infrared band in an 800nm-1400nm range under the premise that the ultra-high voltage endurance level and the flame-retardant level of the whole product are ensured, and is resistant to corrosion, resistant to high low temperature, inflaming retarding, insulative, resistant to ultra-high voltage, resistant to treading and free of damage.

Description

technical field [0001] The present invention relates to a transmission trigger optical cable in the field of power transmission, in particular to a trigger optical cable used in the field of ultra-high voltage power transmission, and is particularly suitable for providing a high-voltage-resistant, high-flame-retardant, high-insulation, pollution-resistant, and high-strength cable. The trigger optical cable belongs to the technical field of high-voltage and ultra-high voltage DC transmission optical cable transmission. Background technique [0002] In the field of UHV DC transmission, the triggering of thyristors has been replaced by optical fibers. Due to the large photosensitive area of ​​thyristors, it is commonly used internationally to use large-diameter quartz-core plastic-clad optical fibers for triggering to ensure contact. Surface trigger efficiency. In the selection of the optical cable structure used, the current mainstream design is still PVC material sheath, the...

AI Technical Summary

Problems solved by technology

[0003] First of all, the PVC material sheath has great limitations in indoor applications, and its inherent material performance disadvantages such as toxic substances emitted at high temperatures and material deterioration at low temperatures will limit its application environment;

[0004] Secondly, the full tight sleeve design of the optical cable without tensile strength material reduces the overall strength of the optical cable design and the strength of the end connector, which affects the performance of the components in practical applications

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