光纤复合架空相线在中低压架空输电线路中应用

Application of Optic Fiber Phase Conductor in the Middle and Low Voltage Overhead Transmission Lines

光纤复合架空地线(OPGW)既可作为地线,又可作为光纤通信,具有良好的技术和经济效益,在110 kV及以上高压架空输电线路中获得了广泛的应用;35 kV及以下中低压架空输电线路,只需在进入变电所(站)之前局部长度上架设地线,进行防雷保护,又称为进线保护,因此,通常采用同杆架设的全介质自承式光缆(ADSS)。论述了能替代ADSS的新型产品——光纤复合架空相线(OPPC)结构设计、技术优点和经济效益,以及应用中注意的问题。由于OPPC具有良好的技术和经济效益,将在中低压架空线路中获得进一步的广泛应用。

Optic Fiber Ground Wire（OPGW） is widely used in the HV overhead transmission lines 110 kV and above because it can be used both as the ground wire and optic fiber communication line resulting in good technical and eco- nomic benefits. For middle and low voltage overhead transmission lines up to 35 kV, ground wire is only necessary for the part of the line just before entering the substation to provide lightning protection（ referred to as inlet wire protection）. Because of this, all dielectric self-supporting（ADSS） cable installed on the same pole is usually used as the ground wire. This paper presents the constructional design, technical advantages, economic benefits and matters needing attention in the application of a new conductor called optical fiber phase conductor（OPPC） that can be substitu- ted for ADSS. With good technical and economic advantages, OPPC will be widely used in the middle and low voltage overhead transmission lines.