The Research Of A Digital Relay Protector About Transformer-Circuitry Unit

Transformer-circuitry integrated protection is not a common problem, while inpractical operation it has some advantages. For example, in this paper, the research oftransformer short-line connection will give attention to practicability and economy. So far,there is not a special protection device for this problem at home and abroad. The specialdemand of this protection is that it can realize transformer protection and partly realize lineprotection as well. In this regard, firstly the research proposed a general protectionconfiguration scheme and designed feasible and overall scheme of device hardware. Thecommunication problem of protection is analyzed. The communication scheme adaptive tothe protection is designed and the hardware design and software configuration is completed.Some feasibility test has been carried out, and multi-terminal communication problem isconsidered in communication design. In addition, according to the research, the protectioncriterion theory adaptive to Transformer-line integrated protection is proposed. The hardwareconfiguration of device and software programming is designed and analyzed, which ispreparation for certain protection function programming and production realization. Theresearch of this paper includes the above problem and has a detail introduction.