Design of the distributed fault recorder based on TCP/IP

A new kind of fault recorder is presented to overcome the shortcomings of existing fault recorders in power system, such as unreasonable structure design, low communication speed, small data storage capacity, low reliability and so on. The recorder, with MC68332 as kernel, adopts high speed synchro-sampling and computer network communication techniques. The network communication based on TCP/IP between the master station and recording modules is adopted. The principles, hardware and software design are introduced in detail. A RTOS, named Vxworks and modular design are applied, which make the system functions easy to be expanded and maintained. The recorder has been put into practical operation in some substations. The operation results show that it has the advantages of easy to be extended, convenient to be installed, better anti-interference, high reliability, etc.