Study And Realization On Transformer Terminal Unit

Distribution transformer is important electric power equipment in the distribution network, whose operation data is important in electric power system automation. The Transformer Terminal Unit ,namely TTU ,samples AC input(such as voltage, current and so on) and state(for example: switch state) and executes remote control command(open operation or close operation), TTU supervise the action of transformer ,so it guarantee the security of DAS(Distribution Automation System.This paper is mainly based on the study of the development of Transformer Terminal Unit which consideration with the demand of clients. A scheme of TTU device is proposed and realized by use of General Packet Service(GPRS) and upsd3334 SCM chip,The background of study ,the development of TTU ,the aim and significance of this paper is introduced in the first;The whole scheme including the function and the capability of this device is proposed in the second;then,the theory of signal date acquisition is introduced,the calculation of electricity parameter is mainly described;the hardware configuration of the device is given, including the CPU board,the MMI board etc,the anti-jamming means is also discussed;the system structure of the software module and the function of each part of monitor and control system are presented in detail,the softare consistes of the monitoring system and the administer control system.in the end of this thesis ,the summarization and prospect of this study is proposed.The system has abundant convenient operation, such as convenient operation, low cost, convenient to setup and maintenance, easy to development and extend.