Fault Tolerance Method Based On Resource Backup In Power Communication Network

As an inseparable part of the power grid,the power communication network is an important pillar of the safe,stable and high-quality operation of the power grid.The fault tolerance method is mainly responsible for finding and providing some important backup components of the network to replace the faulty components in the network when various types of faults occur,to ensure that the power communication network can continue to provide services,thereby supporting the safe operation of the power grid.It is of great significance to study the fault tolerance method of power communication networks.The faults in the actual environment of the power communication network maybe caused by various reasons,and the damage modes of the power communication network are different.The current fault tolerance method does not classify the fault types,and it is difficult to target different types of faults.Resource backup.Aiming at the shortcomings of fault tolerance methods of power communication network,this paper studies the power communication network backup algorithm for cascade faults and regional faults.Cascading failure refers to a failure caused by cascading in the process of interaction between nodes in the power network and the communication network during data communication and information exchange.In order to solve the problem that the cascading faults in the power communication network are large and the faults are difficult to solve,based on the complex network theory,a fault tolerance method for power communication networks oriented to cascade faults is proposed.The algorithm finds the key nodes in the power communication network by analyzing the network coupling relationship and executes the corresponding key node backup strategy.The performance of the algorithm and the fault generation state is analyzed by using multiple attack strategies.The simulation results show that compared with other algorithms,the proposed power communication network backup algorithm for cascade faults has strong cascading fault suppression capability.Regional failure refers to a wide range of failures caused by large-scale geographical changes such as earthquakes and ice disasters.The characteristics of such faults are characterized by faulty nodes or links appearing in pieces.The backup scheme should be designed to avoid areas with strong geographical location.Aiming at the problem of large randomness and wide range of regional faults in power communication networks,a power communication network backup algorithm for area faults-based sampling point-based fault-tolerant algorithm SPA is proposed.The algorithm finds the key links in the network by simulating the random generation of regional faults,and performs corresponding resource backup under the condition of backup resource cost constraints.The simulation results show that SPA is better than other typical algorithms such as LSRA(landmark-based source routing algorithm)and PRFAA(probability region failure-aware algorithm),and has strong regional fault suppression capability.