| On the basis of traditional power systems,smart grids use integrated and high-speed two-way communication networks to remotely automated monitoring,control and protection of power system power generation,transmission,power distribution,and power consumption.The power distribution field network connects power transmission and substation,power users,and distributed new energy.It is a key component of the ‘last mile’ infrastructure of the smart grid.In order to solve the communication technology problems in the construction of smart grids.At present,the communication environment of the power distribution field network is complex and diverse.The types and quantities of equipment,diversified access forms,wide distribution,distributed power distribution automation and electric vehicle charging piles such as new types real-time and reliability requirements are high.At the same time,real-time monitoring and remote control of massive power equipment need to be performed.There are many types of data information and frequent two-way interaction.In response to the above problems,according to the characteristics of the power distribution field domain network and different types of business,the Qo S demand design is highly reliable end-to-end routing algorithm,which is of great significance for ensuring the stable operation of business and reliable transmission.From the perspective of business,this thesis studies the high-reliable routing algorithm in the field of power distribution fields.The main research content is as follows:(1)Aiming at the high real-time and high reliability requirements of the power control business in the power distribution field area network,a reliable routing guarantee algorithm based on the improved Dijkstra algorithm is proposed.This algorithm is optimized by maximizing the number of end-to-end business at the same time,and the routing modeling is restricted by the reliability and jumper of the business.Select the most reliable communication link transmission data for the power control business.The simulation results show that the algorithm effectively enhances the capacity of the network,improves the success rate of business transmission,and guarantees the reliability of business communication.(2)Aiming at the differentiated Qo S requirements of power control business and information collection business in power distribution field area network,a multi-path reliable routing algorithm based on improved BFS algorithm is proposed.The algorithm regards delay,reliability and link availability as the link cost,aims to minimize the path cost function,to find one or more optimal communication paths between the service source and the destination node under the constraints of delay,reliability,bandwidth and flow conservation.The algorithm uses the improved BFS algorithm to determine the set of candidate routes for services,and designs corresponding routing strategies for different types of services,which can meet the Qo S requirements of different services,achieve network load balance,and ensure continuous and reliable data transmission.The simulation results show that the algorithm can improve the reliability of data transmission in the power distribution field area network,ensure the average end-to-end delay of the business,improve the throughput of the network,and thus improve the overall performance of the network.(3)A Net Logo-based power distribution field area network simulation system is designed and implemented,and the multi-path reliable routing algorithm based on the improved BFS algorithm is simulated and verified.The system is composed of model layer,software layer and user layer,and generates different network scale topologies in line with the characteristics of the actual power distribution field network.On the basis of the system,different types of business can implement corresponding routing strategies according to the priority.The simulation results show that the system can effectively verify the superiority of the proposed algorithm in reliability and other aspects. |
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