Research On Clustering Routing Protocols In Wireless Sensor Networks Oriented Substation Temperature Detecting System

With the rapid development of economy,the demand of electricity is increasing.While substation occured power outages frequently,which affecting the normal power supply network seriously.The reason that the aging equipment and long-term high load operation of the equipment lead the local temperature too high,coupled with the inaccuracy and low coverage of substation wireless temperature monitoring system.So accidents could not be found in time and to deal with.Frequent power outages have brought inconvenience to the people's lives,and also caused the economic losses of social production and made a bad social impact.In this paper,the wireless sensor network technology is applied to the wireless temperature monitoring system of substation.The routing protocol and the fusion algorithm based on the routing protocol are studied to improve the reliability of the wireless temperature monitoring system.The main contents of this paper include three parts:Firstly,the frame of the temperature monitoring system for substation wireless sensor network is designed,and the concrete content is expounded.The routing protocol and the fusion algorithm based on routing protocol are analyzed for the substation wireless temperature monitoring system.Secondly,according to the demand of substation temperature monitoring task,a LEACH-D multi-hop routing algorithm for substation wireless temperature monitoring is proposed based on the classical LEACH algorithm.The threshold function of cluster head is modified by the algorithm,The cluster head selects the transmission path according to the optimal path formed by the Dijkstra algorithm,and the weights are taken into account in the next-hop cluster head.In this algorithm,distanceand energy.The simulation results show that the LEACH-D algorithm can effectively reduce and balance the energy consumption of the network and prolong the network lifetime.Finally,on the basis of LEACH-D multi-hop routing protocol proposed for substation,there may be a large amount of redundancy in the information collected at the substation monitoring points,and even exist wrong data due to interference and collected by failure node.The first-level fusion algorithm is an average weighting and confidence interval algorithm adopted by the common nodes in the cluster to collect the temperature data,which reduces the data redundancy and improves the accuracy of the data.The first-level fusion algorithm is the two-level fusion algorithm of the routing protocol.The second-level fusion algorithm is an adaptive algorithm used by the cluster-head node for multiple data fusion.The adaptive weighting algorithm considers the accuracy of the sensor by means of the mean and variance of the historical sample data,assigns different weight values through the precision,the principle is that the more the weight,the more the weight.The improved algorithm comprehensively considers the sensor nodes' s historical samples and the current values to assign weights,more fair and comprehensive,improved two-level fusion algorithm is correct and stability.The two-level data fusion algorithm not only improves the accuracy of data collection,increases the fault tolerance of wireless sensor networks and reduces the amount of data transmitted,reduces the energy consumption of wireless sensor networks,and prolongs the network lifetime.