Distribution Network Automatic Communication System Based On Industrial Ethernet Technology

In the context of increased investment in new infrastructure,China’s smart grid has ushered in rapid development.Distribution automation is an important part of the smart grid,and the realization of distribution automation system functions must be based on a safe,reliable,and strong communication system.The main function of the communication system is to carry out effective signal data collection on each node in the distribution automation system and to reliably complete the transmission of dispatching instructions,so as to achieve remote control,real-time monitoring and management of equipment,and timely and reliable fault handling.At present,in the field of distribution automation communication system construction at home and abroad,the networking methods used mainly including wireless public network networking,wireless private network,power carrier,industrial Ethernet networking,and passive optical network technology networking.Among them,industrial Ethernet technology is a communication method based on optical fiber networking,which enabled it to have strong anti-electromagnetic and noise interference capabilities,high network reliability,low network transmission delay and long transmission distance.These advantages are very consistent with the actual engineering needs of the distribution automation communication system networking.This paper briefly describes the basic concepts of distribution automation,introduces the research status of distribution automation communication systems at home and abroad,and analyzes the application advantages of industrial Ethernet in the field of distribution automation from the perspective of technical principles.On the basis of fully understanding the needs of the distribution automation services for the communication system,this paper puts forwards a layered networking model from the perspective of network reliability,which consists of three layers: core,aggregation,and access.The high-reliability design has been carried out in every layer networking mode.In terms of real-time requirements,this paper roughly estimates the transmission delay of the networking mode communication based on Industrial Ethernet through theoretical calculations.Considering the importance of network security to the distribution automation communication system,this paper also gives anetwork security construction plan.After studying the distribution automation communication networking scheme based on industrial Ethernet from a theoretical perspective,this paper establishes a distribution automation communication simulation networking model through e NSP network simulation software,and introduces the hardware connection and device protocol configuration of the networking model in detail.After the construction of the networking model is completed,this paper designs several scenarios such as optical cable failure and equipment failure.Through simulation experiments,it is verified that the networking model based on industrial Ethernet technology can meet the real-time network requirements of distribution automation.Finally,this paper combined with a class A power supply area distribution automation transformation project in a certain city,carried out practical engineering verification of the industrial Ethernet-based distribution automation communication system discussed in this article,and supplemented the industrial Ethernet-based industrial Ethernet-based The distribution automation communication networking scheme has practical feasibility.