Applied Research Of Substation Equipment On-line Monitoring Based On Wireless Networks For Industrial Automation

During the rapid development of smart grid, it puts forward higher requirements for flexibility, anti-interference and reliability of on-line monitoring system of intelligent substation. The on-line monitoring system of intelligent substation is the important precondition and goal to realize the safe and stable operation of substation equipment for a long time. Industrial wireless communication technology has many characters such as self-configuration, self-heal and ultra-low power consumption, etc, and it also can resistant to the complex electromagnetic interference in the substation and achieve high reliability for data transmission. Therefore, this paper designs the on-line monitoring system of substation equipment based on WIA-PA industrial wireless communication technology.Firstly, during the on-line monitoring, industrial wireless communication shows the characteristic that overall irregular clustered distribution but local intensive on the topology, so this paper proposes the working mechanism with community field based on overall irregular dispersed and local intensive network characteristics, and select backbone sensor nodes to construct dense cluster in each field. This paper also puts forward an operating method of rotating the backbone nodes to simulate, which reduces the influence of network energy imbalance to the life cycle in the practical application of on-line monitoring.Secondly, this paper designs the wireless communication module, the hardware circuit of wireless gateway nodes, and the block diagrams of composing each terminal node. In addition, this paper introduces the thought of software design for each monitoring node, the flow chart of the subroutine, the initialization of PC software installation, the configuration of initialization and the implementation of monitoring interface, etc.Finally, this paper introduces the engineering application, the deployment of installation and the testing of system performance, verifies the reliability and stability of data transmission in the system, and proves that the designed system has strong anti-interference performance and practicability.