Design of Wireless Networking for Preventing Mal-operation System in Substation
In order to replace 4G dependent data interaction in error prevention systems with LoRa based ad hoc network communication,a wireless networking implementation of the preventing mal-operation system was designed. The implementation is based on the wireless networking specification for the Internet of power transmission and transformation equipment. The solution includes LoRa wireless network design and accessing network scheme for preventing mal-operation prevention terminal,realizes preventing mal-operation control in monitoring network. The original IoT protocol is designed for sensor monitoring,a new optimization scheme is proposed in order to solve the problem of inferior real-time transmission and network frequency switching for mobile devices. Ensuring compatibility with contention slot protocol for existing sensors,a new fixed time slot allocation is added for mobile devices to improve the data interaction,and a synchronous scanning scheme is designed for frequency switching efficiency. After testing and verifying in the pilot station,the optimization scheme can realize high real-time mobile operation application of mobile device,and compatible wireless communication scheme of power transmission and transformation Internet of things.
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