Power Consumption Information Acquisition System Based On Converged Communication Technology

With the continuous development of China's economy,science,and technology,the residents' demand for electricity is also increasing.Power system has become an indispensable part of people's life.For residential users,electricity information collection system has been one of the important work of the power company.By introducing the intelligent electronic equipment,the power consumption information of users is directly collected from the terminal.The data is integrated and transmitted to the back-end data center via the network.The management personnel can directly collect analyze,and use the user data on the back-end platform,which greatly reduces the cost of human data collection.This system improves the effectiveness and accuracy of user power information collection.In this thesis,according to the requirements of data acquisition and data transmission of users,also aiming at the limitations of data transmission technology of single communication network,the converged communication technology is introduced to transmit the data collected in the power grid.The biggest feature of this technology is that it can give full play to the advantages of different communication technologies and protocols,and make the end-to-end communication system more robust.It can deal with different communication data transmission requirements.After comparing the characteristics of several communication protocols and communication modes,together with the advantages and disadvantages of their respective technologies,Zig Bee technology and TD-LTE(Time Division Long Term)technology are selected for this system.And the user electricity information acquisition system is realized by the combination of the two communication technologies.In this system Zig Bee protocol is used for communication in the process of data collection and data aggregation network,and TD-LTE protocol is used for long-distance data communication if the backbone network transmits data to the back-end data center.At the same time,the flexibility of terminal deployment and the bandwidth requirements of backbone network transmission are considered.In the thesis,the CC2530 chip is selected as Zig Bee protocol chip,and the hardware equipment of concentrator,collector and repeater node are designed and implemented around the chip.The function of collecting data from terminal and summarizing through Zig Bee network are realized.The key nodes in the network,the circuit of each key node hardware system equipment are designed,and the power supply mode of the system module is designed in detail.Finally,the communication system is composed of the modules designed and implemented.At the same time,the software system of each hardware module is designed and implemented.The software system can read data from the interface and unpack according to the protocol,and then encapsulate the protocol data needed by the next network for forwarding,so as to realize the process of data transmission in the communication network of different protocols.The system is tested and verified in the actual use scenarios.Through the test and test results,as well as the simulation results of the system,it can be proved that the converged communication technology,which completes the design and tested in the research can effectively realize the user data transmission requirements of this scenario.This systemisgreatly improving the stability of the communication scenario and the flexibility of deployment.It has a certain practical value.