Research On Clustering-based Routing Algorithm For Power Wireless Sensor Network

Currently, wireless sensor network technology is a central issue in the field of information technology, and the prospect of its application is broad. With the popularization of a variety of advanced technology, smart grid becomes an inevitable trend, in which wireless sensor network technology plays an increasingly important role. The construction of smart grid is based on the rapid development of information technology. In response to the target that building a strong and smart grid, and accomplish the construction of comprehensive monitoring for the security and interactive information system, the research focus on the solution of energy conversion efficiency, reliability, large-scale networking and optimizing communications performance in wireless sensor network communication becomes more important. To satisfy the requirement of strong and smart grid, an improvement on wireless sensor network routing algorithm is proposed to optimized the energy requirement in this paper, based on the smart grid wireless communication features.For the data acquisition and monitoring services of the power system, the LEACH algorithm was analyzed for its theory and shortcoming, and a new algorithm based on the LEACH algorithm is proposed. In the proposed algorithm, the full-energy and fewer elected cluster head node is easier to be elected, for taking the present energy, non-successive rounds and the cluster head node degree into consideration simultaneously, which extending the network surviving-cycle and improving the network performance. For large-scale power systems distributed sensor network nodes cause the nodes energy closer to the base station attenuating too fast, the uniform distribution of cluster heads and other issues, a grid-shape clustering routing algorithm is proposed. In the algorithm, node distribution area is zoned into several square grid firstly, and then the election of cluster head is based on the internal communication to balance the whole network node energy, the data transmission to base station use the multi-hop routing inter-cluster communication, a virtual node is built based on cluster head node and the allocation of relative base stations, and the next hop is elected by surrounding node allocation and remaining energy, which reducing energy costs. Simulation experimental results show that the algorithm can extend the network surviving cycle, balance node energy consumption, support a variety of complex wireless sensor network environment and have a good scalability in the large scale environment.