Research on the Key Technologies of Wireless Sensor Networks in Smart Power Grids

Smart grid need to transmit a large number of data through the Wireless Sensor Network (WSN). In the past, the core problem of WSN was to limit the energy consumptions of the node and prolong the life cycle. With the development of hardware technologies, and to improve the security and reliability of the transmit data, the core problem of WSN is changed to improve the connectivity and stability of WSN network. This paper summarized a new topology used in WSN network. Large area was divided into small grid as region. By calculate the weighted average values of each node in the region, we constructed a tree topology. The new topology improved the key technologies of WSN including data privacy, Qos, query algorithm and robustness. In the simulation experiments, the new topology can improve the stability and connectivity of the WSN remarkably.