Power transmission line maintenance information system for Hokusei line with snow accretion monitoring capability

A new maintenance information system for overhead power lines was developed and put into practical use in assuring a stable and reliable supply of electrical power. By using tension sensors, various kinds of meteorological sensors, and TV cameras, this system regularly monitors snow accretion on power line running though snowy mountainous areas. Sensor data are transmitted through optical fibers within the composite fiber optic overhead ground wire. The central monitoring equipment performs distributed processing using several personal computers to share the tasks effectively. This system is considered as a model of future power line maintenance information systems and is therefore developed as a generalized system including both fault location and a data acquisition scheme from control processors of dispatching facilities