Study and Application of MQTT Protocal-based Data Safe Transmission in Power System
With the development of the Internet of Things,the application of the IoT in power is also increasing. Among them,the MQTT communication protocol is the most widely used due to its characteristics of low resource consumption, high efficiency,adaptability to low bandwidth and unstable networks. The power system is divided into safety zones Ⅰ,Ⅱ,Ⅲ,Ⅳ,and the Internet region based on safety considerations. Most IoT devices operate in the Internet region,which is a public network area. Based on practical needs,the security Ⅰ zone system needs to communicate with IoT devices in the Internet zone,ensuring data security and efficiency. Therefore,this paper focuses on security and efficiency of communi-cation between the security Ⅰ zone system and IoT devices in the Internet zone. It studies the deployment of MQTT Broker servers in zone Ⅳ of power system security,supporting SSL connections and simultaneous deployment of a security gate-way,mapping MQTT Broker to a security gateway which supports IoT device connectivity. Moreover,MQTT client and National Security Algorithm are also deployed,and CA certificate,digital signature,digital verification,hash encryption, etc. Are introduced,in which IoT devices are only allowed to communicate through SM2 national security certificate verifi-cation and bidirectional certificate verification mechanism is adopted. JSON format for MQTT communication is defined to ensure consistency in data exchange between the two communication parties.
power systemMQTTJSONSSL/TLSNational Secret Algorithm
万方数据
维普
