直流特高压超长站距光中继系统设计与实现

发布时间：2018-11-08 13:38

【摘要】：特高压输电技术是当前国家电网发展战略的需要,随着线路电压等级的不断提升,站间跨距越来越大,而光信号会随着传输距离的提升而衰减增大,这为电力系统通信带来了新的难题,所以对于可靠的长距离光传输系统的研究对电网建设具有极其重要意义。本文主要从线路损耗、色散和光信噪比受限3个方面对电力系统超长站距光传输的关键问题进行研究,设计通过光中继和遥泵(无光中继)两种方式实现400km超长站距光传输,尤其是提出一种安置在塔中的“自给”式独立供电的光中继设备实现超长站距光通信方案,并在哈密至郑州±800千伏特高压线路(石城-环县段)对单波10G光传输系统进行部署和测试。前期对链路损耗、接头损耗、色散损耗以及设备的接受能力进行了详细的演算,确定了工程中光放大器及增益单元的预定距离。课题实施过程中,依据前期测算在符合光损耗限度区域内确定了安置光中继站和喇曼远程增益单元的杆塔位置,并在实际生产环境下对系统进行部署和验证。两套系统均实现了400km以上的传输距离,课题最后对两个系统进行了测试和对比。课题研究结果表明,可以实现特高压线路中变电站与变电站之间超长站距的光通信传输,对于未来工程建设和方案的设计推广具有实际意义。
[Abstract]:UHV transmission technology is the need of the current national power grid development strategy. With the continuous upgrading of line voltage, the span between stations becomes larger and larger, and the optical signal will decay with the increase of transmission distance. This brings new difficulties to power system communication, so the study of reliable long distance optical transmission system is of great significance to power grid construction. In this paper, the key problems of ultra-long station distance optical transmission in power system are studied from three aspects: line loss, dispersion and limited optical signal-to-noise ratio. The 400km ultra-long station distance optical transmission is realized by optical relay and remote pump (non-optical relay). In particular, a "self-contained" independent power supply optical relay device installed in the tower is proposed to realize the super-long distance optical communication. The single-wave 10G optical transmission system was deployed and tested on the 卤800 kV UHV line from Hami to Zhengzhou (Shicheng-Huanxian section). The link loss, joint loss, dispersion loss and the receptivity of the equipment are calculated in detail, and the predetermined distance between the optical amplifier and the gain unit in the engineering is determined. During the implementation of the project, the position of the pole tower of the optical relay station and Raman remote gain unit is determined in accordance with the limit of optical loss according to the previous calculation, and the system is deployed and verified in the actual production environment. The transmission distance above 400km is realized in both systems. Finally, the two systems are tested and compared. The research results show that the optical communication transmission between substation and substation in UHV transmission line can be realized, which is of practical significance for future engineering construction and scheme design and popularization.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN929.1;TM73

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