Reliable Routing Research For Smart Grid Communication

Power communication network is an important part of power grid.It is the basis of the dispatch,operation and management informationization for power grid,and it is also an important means to ensure the safety,stability and economic operation of the power grid.With the continuous development of smart grid,the power communication network becomes a complex and multi-tiered network that connects power utilities and thousands of intelligent electronic devices.Therefore,it is necessary for the power communication network to design the corresponding reliable routing algorithms according to the requirements of different network layers in smart grid.Based on the detailed analysis of the hierarchical communication networks of smart grid,this thesis focuses on the following contents:(1)In the Neighborhood Area Network(NAN)communication network of smart grid,the Wireless Sensor Network(WSN)is widely used.In order to ensure the reliability of routing in Neighborhood Area Network based on WSN,an energy-aware routing algorithm based on node degree deviation of complex network is proposed.The simulation results show that the algorithm can achieve the goal of balancing the communication network load,avoiding network congestion and prolonging the network lifetime;(2)In the Wide Area Network(WAN)communication network of smart grid,the control commands of demand response(DR),which are transmitted to intelligent electronic devices,requires short delay.In order to ensure that the delay of WAN communication meets the delay constraint of the smart grid,a multicast routing algorithm that comprehensively considered DR capability of different power consumer and the communication delay constraint is proposed.The simulation results show that the proposed algorithm can effectively reduce the Wide Area Control delay and effectively solve the problem that the demand response of power consumers with large DR capablities is not in time.On the basis of the above research contents,a grid frequency control system simulation model is constructed in this thesis,in order to verify the impact of the proposed routing algorithm on the delay of the grid frequency.On the above simulation model,the effects of delay performance for different multicast routing on grid frequency are studied,and the variation of multicast routing delay under different power grid communication network models are also studied.The results of the above modeling and system testing provide a reference for the selection and design of reliable routing for smart grid communication networks.