Applied research of supervision and control system in 110kV smart substation based on three layers of three networks

In allusion to the failure data submergence in a circuit breaker burning accident in a conventional substation of a coal mine, and in view of those supervision and control system defects in a conventional substation such as information islands, complication of network nodes and subsystems, nonstandardization of application function, poor expansion of system, and also high charge of operating and maintenance, this paper puts forward a applied research of 110kV smart substation supervision and control system based on three layers of three networks. It aims to realize the following goals: local information acquisition, networked information sharing, intelligent information application, and stateful equipment maintenance. Up till today, this system has been operated in a coal mine YBM of high altitude area in Yunnan Province. By testing and debugging, it meets the requirements: safe and reliable switching; continuous and stable running; and much cheaper operating and maintenance charge. Facts have proved that it is a system of advanced and money-saving technology, which provides good reference for design and construction of coal mine smart substation under the environment of smart grid. Furthermore, it is to meet the need of development of smart substation automation technology for regulate-control integration mode.