| Power data communication network,which plays an significant role in security and stable operation of power system,is responsible for translating business data of power system efficiently.It is so important in power grid dispatching automation and management modernization that we have to ensure its stability and efficiency.But the communication network has many characteristics of topology complexity and business diversity,which have brought people great difficulties in analyzing and design of communication networks.So how to design a reasonable and effective network to satisfy the requirements of people or how to optimize the existing communication network has become a widespread concern of relative researchers.This paper takes Jiangxi province electric power data communication network as the research object.And a kind of optimization scheme was proposed by according to comparing,analyzing and summarizing the existing optimization methods.The optimization scheme includes the following aspects: 1.A kind of path reliability model was put forward based on link bandwidth,and with using the multiple autonomous system,the network topology of Jiangxi power data communication network was reconstructed in core and backbone layer;2.The more efficient IS-IS routing protocol were put forward to using in network by analysizing the advantages and disadvantages of the commonly used routing protocols,which making the network run more quickly;3.A kind fo new routing strategy based on modifying link metric value dynamically was proposed.When applying this strategy in the backbone layer and convergence layer topology,load balancing was realized and thus reducing the load of the key link.At last,in order to verify the effectiveness of the proposed optimization scheme in real scenes,two sets of simulation platform were constructed using OPNET simulation tools.One is based on the existing configuration and structure of Jiangxi,the other is based on theproposed optimization scheme.The simulation results show that the performance of the optimized network is better than no optimized network.In addition,the function of the new simulation platform can be expanded,which can be used to predict the capacity for the increase of traffic demand.The optimization scheme has certain reference value for the network planning and optimization of Jiangxi electric power company. |