The electric utility industry is moving toward a deregulated, competitive environment where utilities must have accurate information about system performance to minimize maintenance cost and meet customer expectations. Reliability of electric systems is gauged using several criteria adopted by the industry that, in general terms, measures the length and frequency of power outages.Ground faults in underground cables are the most common cause of power outages in urban power distribution systems. Locating and isolating a ground fault, while restoring the healthy part of the network as quickly as possible, can significantly reduce outage costs and maintain the quality of supply and safety requirements. Therefore, automatic ground fault detection and localization represents a substantial part of the Smart Grid applications.
Electronic equipment tends to misoperate or reset following momentary interruptions, such as those occurring when transient faults are cleared. A ground fault recognition and management system should rely on units that are independent from line power supply.Sensing the weather has been important to man over the centuries.Today, the winds and other weather variables are of equal concern and can have an even greater impact on human life. Weather affects a wide range of man’s activities, including agriculture, transportation and leisure time.Real time meteorological information can be effectively used in agricultural production process. The timing of different activities, e.g. sowing, ploughing, fertilizing, pest and disease control, should be done when weather conditions are most favorable.
Electricity and gas companies rely on weather forecasts to anticipate demand, which can be strongly affected by the weather. Accurate weather monitoring is essential for the aviation industry. Airports often change which runway is being used to take advantage of a headwind. This reduces the distance required for takeoff, and eliminates potential crosswinds..RTU/Data Loggers, featuring full internet connectivity and I/O expansion capability, can form the cornerstone for building distributed weather conditions monitoring systems in real time, based on line powered or solar powered measuring and recording stations.