风电机组无线监控系统的构建方法

从节点部署和路由协议2个方面对风电机组无线监控系统进行构建。考虑到风电机组典型故障的分布具有一定的空间性,提出了一种空间正四面体节点部署方案,以最大限度地减少所需部署的传感器节点数目。所提节点部署方案将正四面体理论运用到监控系统的节点部署中,着重对机舱的齿轮箱、发电机与传动轴进行监控部署;在此基础上,通过对经典LEACH路由协议的簇头选取方式进行改进,提出了适用于风电机组监控系统的路由算法。该算法综合考虑了节点剩余能量和节点之间的几何距离,最大限度地提高了监控系统的信息传输能力并均衡利用节点能量、延长监控系统的使用寿命。仿真结果表明,所提空间节点部署方案拓展了监控系统的监控能力,所提改进路由算法使监控系统的最佳工作时间延长了31.35%。

Construction method of wireless monitoring system for wind turbine

The wireless monitoring system of wind turbine is constructed from two aspects: node deployment and routing protocol. Considering the spatiality of typical fault distribution of wind turbines, a spatial regular tetrahedron node deployment scheme is proposed to decrease the number of deployed sensor nodes to the utmost. The proposed scheme applies the regular tetrahedron theories into the node deployment of the monitoring system and focuses on monitoring the cabin gearbox, generator and transmission shaft. Based on this, a routing algorithm applicable to wireless monitoring system of wind turbine is proposed by improve the cluster head selection method of the classical LEACH routing protocol. Considering the residual energy of nodes and the geometrical distance between nodes synthetically, the algorithm can improve the communication ability of monitoring system, balance the energy consumption of nodes and prolong the lifetime of the wireless monitoring system. Simulative results show that the proposed spatial node deployment scheme expands the monitoring ability of the system and the proposed routing algorithm effectively prolongs the system lifetime by 31.35 %.