Abstract
It is a new philosophy of protection in distribution networks, whose objective is to reduce, in an unconventional way, the sum of the operating times (exposure) of the protection equipment (reclosers and circuit breakers) on the short-circuit currents, while throughout the automatic reclosing cycle, maintaining the coordination of the protection system. From the protection point of view, this philosophy can be applied mainly in feeders that contain a large number of protection devices in series, which results in long operating times and exposure to fault currents, especially in devices further upstream in the feeders, with using conventional protection philosophies. Pilots of this new philosophy were applied, which presented satisfactory and even surprising results (in cases of broken cables), thus, resulting in a roll-out process of this philosophy in about 400 other devices protection in the utility grid, presenting good scalability due to possibility of its application in all models of IEDs of reclosers and circuit breakers of the utility that are found on the market. This scheme was elaborated and managed through the project called Urban Futurability, which consists of an R&D project performed at Enel-SP.
Published Version
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