DSI 5111 is a new type of plant integrated automation product launched by Beijing Tianneng Protection Electric Power Technology Co., Ltd. This series of products has the following main features: comprehensive and efficient implementation of IEC 61850 communication protocol, leading protection, control function graphic programmable configuration implementation method, high-performance software and hardware platform, rich and flexible automation functions, large screen, indicator light programmable friendly human-machine interface and extremely strong anti-interference performance.