Research And Design On Pingtan Electric Power Communication Interconnection Across The Sea

Pingtan Country, the largest island in Fujian Province, is geographically separated fromFuzhou mainland by Haitan Strait. Because of this natural barrier, there has never been a privateelectric power communication channel between Pingtan Electric Power Company and FuzhouElectric Power Bureau for long time. So Pingtan Electric Power Company has become averitable power communication "isolated island". The production of power informationbetween Fuzhou and Pingtan was transmitted in the public network, in which the safety andreliability can not meet the needs of production of power. In order to solve this problem, thispaper proposes to take good use of the existent power substations and fiber resources in powersystem to construct a microwave relay for connecting the electric power communication opticaltransmission networks across the strait.This paper includes two parts of microwave transmission across the sea and optical fibernetworks interconnection. In the first part, after researching the classical theory of microwavetransmission, the author takes the unique advantages of the large quantity and the wild rangedistribution of power substations in the coastal area and also the rich resources of OPGW(opticalfiber composite overhead ground wire) to design a solution. Considering the geographicalconditions of the existent power substations, communication room environment, power supplysystem, optic fiber networks and other resources, the author chooses the appropriate substationsas microwave terminal stations, and builds a direct microwave circuit across the sea, withminimum investment to achieve the greatest economic and social benefits. While comparing themicrowave routes, combined with the analysis of various technical dates, this solution uses theisland across the microwave path to block against reflected wave and resist multi-path fading, soas to improve the transmission quality. These means efficiently save the costs and maximizeinvestment returns. In the second part, based on the study on the optical transmission technologyapplied in Fuzhou electric power communication, using the power system optical fiber resourcesin the microwave terminal stations and the extended points, the solution achieves theinterconnection of electric power optical transmission networks with different transmitting ratesacross the sea. The final completion of this project, completely solves the problem in the electric powercommunication networks interconnection between Pingtan Country and Fuzhou mainland acrossthe sea. The achievement not only increases security and reliability of production of powerinformation transmission, but also enhances the Fujian Electric Power Company ranking in therelevant industry-standard competition in the State Grid Company. The success of this case alsoprovides an experience that optical fiber communication networks can be connected bymicrowave relay where the construction of optical cable is limited by geographical conditions.