油气输送管道光传输系统保护方式优化

Optimization of Protection Mode for Optical Transmission Systems in Oil and Gas Pipelines

油气输送管道光传输网络建设初期,光缆采用与油气输送管道同沟敷设方式,并根据站场和阀室站点情况合理布置设置光传输设备。由于建设初期,管道传输业务量较少,采用SDH(同步数字体系)光传输设备作为主用传输方式。随着国内油气输送管道大规模的建设,SDH网络由链状形成了环网,并最终利用SNCP (子网连接保护)环对业务保护。近年来,油气输送管道通信网络初具规模,在关键站点设置OTN (光传送网)设备,形成了通信主结构与子结构两个维度的传输网络。OTN主结构传输网络带宽大,但是接入业务有限;SDH子结构传输网络可接入丰富的管道业务,但是传输受限。通过主结构与子结构站点合理布置,既能满足大颗粒业务的传输需求,又能满足单站小颗粒业务的传输需求。随着视频业务、办公业务需求增大,SDH容量受限,加上SNCP环上的业务量日益增多,子结构现有传输带宽已不能满足远期传输需求。油气输送管道光传输网络可通过OTN设备与SDH设备组成环网,利用OTN波道对SDH传输业务保护,达到优化光传输系统保护方式的目的。因此可利用OTN波道资源与SDH成环保护,进而优化油气输送管道光传输系统保护方式。

At the initial stage of the construction of the oil and gas transmission pipeline optical transmis-sion network,the optical cable is laid in the same trench as the oil and gas transmission pipelines,and the optical transmission equipment is reasonably arranged according to the condition of the station and valve station.Due to the small amount of pipeline transmission traffic in the early stage of construction,SDH(Synchronous Digital Hierarchy)optical transmission equipment is adopted as the main transmission mode.With the large-scale construction of domestic oil and gas transmission pipelines,SDH network has formed a ring network from a chain,and finally uses SNCP(sub-network connection protection)ring to protect business.In recent years,the oil and gas transmission pipeline communication network has begun to take shape.OTN(Optical Transport Network)equipment has been set up at key stations,forming a transmission network with two dimensions of communication main structure and sub-structure.The transmission network bandwidth of the OTN main structure is large,but the access service is limited.While SDH sub-structure transmission network can access rich pipeline services,the transmission is lim-ited.The main structure and sub-structure stations shall be arranged reasonably,so as to meet the trans-mission requirements of both large particle businesses and single station small particle businesses.With the large demand for video and office services,SDH capacity is limited,and with the increasing traffic on the SNCP ring,the existing transmission bandwidth of the sub-structure can no longer meet the long-term transmission demand.The oil and gas transmission pipeline optical transmission network can form a ring network through OTN equipment and SDH equipment,and use OTN channels to protect SDH trans-mission services,so as to optimize the protection mode of the optical transmission system.Therefore,OTN channel resources and SDH can be used to form a ring for protection,so as to optimize the protec-tion mode of oil and gas transmission pipeline optical transmission system.