Planning And Design Of Power Grid Data Bearer Network

With the development of smart Grid,the service data of Power Grid management and marketing are becoming more and more IP, thus data bearer network urgently need to be upgrading. This Paper did the research of network planning and design method based on PTN technology, with the analysis of current situation of a certain electric power communication network and the bandwidth requirement of the future.Packet switching network is the core of PTN technology, with high QoS, rich OAM management capabilities, fast protection, time synchronization and other advantages. This paper use the key technology of PTN, choosing the NOKIA SIEMENS products, according to the optical fiber topological structure of a certain area, designed the PTN equipment, long distance transmission, the network model and so on. Further more, this paper doing research in the capacity expansion, DCN planning, QoS designing according to the current situation of a certain communication network.This paper classified service from nine different layers on the basis of deep analysis of the business data though electric power communication network. Combined with the key technology of PTN QoS service, designed 9 kinds of QoS priority assignment template, and applied to the actual operation of service channel opening in the PTN network. In order to reduce the complexity of service configuration, this paper collocated the excess bandwidth of EIR only, preemptive scheduling through service priority. After the implementation, the network throughput improve 50 percent, and the network delay reduce from 20ms to 7ms, enhanced the network performance.Considering the service requirements and bandwidth prediction and other factors, this paper put forward constructing multiple 10GE links by using CWDM technology in the design of PTN core ring. Without changing the network topology,120GE capacity are achieved with ultra-low cost, which is equivalent to using 10% of the project cost to upgrade the bandwidth capacity 12 times.In the DCN design of data bearer network, using the method of dividing small collision domain, which used the OSPF protocol for routing and switching in domain. Each CCN domain choose two gateway to interact the network information, and pre-assigned element ID, IP address and other information. By doing this, increasing 80 percent of the efficiency of PTN network management, and avoiding the network storm caused by the confusion of the address planning.Before the PTN communication network put into use, a series of tests need to do, such as optical interfaces of PTN devices, Ethernet services card performance, multi-service bearing capability, protection and SDH network interoperability and operational and so on. The test results show that the design of data bearer network of a certain Power Supply company successfully meet the bandwidth demand.