Research On Operation Monitoring Technology Of Intelligent Distribution Station Area Based On Internet Of Things

The two major of power distribution and power consumption are contacted in the intelligent distribution station area,which is the foundation of smart grid construction.In order to improve the efficiency of power utilization and ensure the order of power consumption,strengthen the construction of intelligent stations is an inevitable trend,and the Internet of Things technology are inevitably applied in the smart grid.With its powerful information analysis and processing capabilities,the development of Smart Grid are greatly promoted with the Internet of Things technology.In the intelligent distribution station area,many companies are equipped with relevant distribution monitoring systems,there are still some problems,such as the distribution of transformers is widely distributed,information cannot be effectively transmitted;at the same time,many low-power resource-constrained devices are also connected during the construction process in the intelligent distribution station area.These devices have limited memory space and a small amount of computing power,especially the sensor part with limited resources in the station area.The appropriate communication protocol is difficult to selected.In this background,the appropriate communication protocol are selected has practical significance with the Internet of Things technology for the construction of intelligent distribution stations.An monitoring system of intelligent distribution station area based on the Internet of Things are researched and designed in this article.Taking the Internet of Things and communication protocols as research objects,the problems of complex data and limited network nodes and equipment resources are focused in the power distribution area,restricted application protocols are researched.The basic principles of the CoAP protocol are analyzed in detail,and the transmission differences are compared between IP/HTTP and the lightweight protocol MQTT/CoAP;the CoAP protocol RFC file,protocol stack,working mode,retransmission mechanism,protocol characteristics and observer mode are studied in detail.The server connection test of CoAP and MQTT is performed to verify the rationality of choosing CoAP as the gateway protocol.The software and hardware design of the intelligent distribution station area monitoring system has completed.In the hardware design,the controller STM32F103RBT6 are used as the data acquisition sensor node,and the DHT11 temperature and humidity sensor,GY-30 light sensor and other interfaces are expanded.At the same time,the circuit of environmental quantity collection module,communication module,data storage module and GSM module are designed;The controller STM32F407ZGT6 are used in gateway node of CoAP and interface circuits are expanded such as Ethernet.The software design of the data acquisition sensor node and data processing gateway node are basedon the RT-Thread real-time operating system as the software development platform,and the data communication is realized through Zig Bee wireless networking.The main software design of sensor data collection,data communication interaction and CoAP server are given in the software system,the thread relationship sequence diagram and main flowchart are designed.At the same time,part of the server design for the intelligent distribution Io T station monitoring system is designed,and the system structure,database,CoAP API,HTTP API are designed.Finally,the data interaction process between CoAP gateway node and station server are tested.The data package of CoAP are tested,the temperature and humidity of the sensor environment data of the station area and the voltage and current monitoring of the telemetry data are analyzed,and the hardware and web page debugging process are explained,at the same time,the application example of the main distribution system are analyzed.The results show that,the request processing time and throughput of CoAP are better than the data of the MQTT server under the same conditions.CoAP is simple,low overhead,meets the communication requirements of resource-constrained environments,and is suitable for low-power consume smart terminals to access the network in station area.By designing an intelligent distribution station area monitoring system based on the Internet of Things,CoAP protocol are applied to sensor networks in station area,research on the operation monitoring technology of the intelligent distribution station area has practical reference significance for improving power supply capacity and power supply reliability.