Research And Application Of New Power LTE Communication Technology For Multi-service

With the development and application of new technologies such as “Internet +” and“Cloud Computing,Internet of Things,Mobile Internet,Big Data”,the power marketing model is undergoing a historic transformation.In line with the requirements of the global energy Internet for new energy consumption,facing the state is increasing investment to promote the continuous improvement of the scale and intelligence level of the distribution network during the 13 th Five-Year Plan period,and the continuous increase of grid operation and user data collection puts higher and higher requirements on the construction and management of access networks.In view of the above situation,this thesis studies the application of LTE broadband wireless communication technology in the field of smart grid,and proposes a wireless multi-service bearer network architecture and an overall solution for LTE power wireless private network.In the first part of this paper,it firstly analyzes the physical architecture and security architecture of LTE power wireless private network.Then,according to the distribution characteristics of the distribution terminal,a distributed amorphous cell networking scheme for service coverage is proposed to meet the communication access requirements of the power service in complex environments.And it analyzes the system capacity of RRUs under different network topologies in the end of the part.In the second part of the paper,it focuses on the multi-service bearer and isolation technology,and implementation method of LTE power wireless private network that can meet the bandwidth requirements,real-time requirements,security and reliability requirements of distribution automation services,and analyzes the impact of communication isolation technologies such as RAN-SHARING and VPN on the performance of multi-service systems from the perspective of security and reliability.Then it researches on the QoS guarantee mechanism applicable to power services in the LTE system,and proposes a security performance test method for multi-service isolation scheme.In the third part,this paper designes the base station prototype equipment and realize the effective isolation of multi-service.And it developpes and designes the prototype of the industrial-grade wireless terminal with information encryption function and two-way identityauthentication function,and multiple service interfaces.Then it realizes an end-to-end source and channel encryption algorithm replaceable and key self-management.For final part of the research,combining with the business needs of intelligent substation,and power transmission and transformation links such as transmission line,we have a pilot project planning and test verification of multi-service access for power LTE wireless private network,which meet the access of distribution automation,smart station area,power information collection,security video surveillance,infrastructure video surveillance,load control,smart home,transmission line status monitoring,charging pile,a total of 9 types of smart grid core services.Through the monitoring and data analysis of the wireless signal range,the wireless signal network runs stably and the data transmission is smooth,stable and reliable,and the test area covers 96 square kilometers in both directions.