An Intelligent Distributed Feeder Automatic Strategy for Active Distribution Network and Its Implementation

With the large-scale integration of distributed generations (DGs) and microgrids, the distribution network has been transformed from a traditional single-supply network to a multi-supply active distribution network. Thus, the traditional fault location technology becomes unsuitable for the new active distribution network, which only considers the single power flow direction of the system with breakers and the local self-healing strategy without power balancing. This paper proposes an intelligent distributed feeder automation implementation method for active distribution network. Based on real-time neighborhood message sharing, self-healing and high-speed real-time communication technology, an intelligent fault isolation strategy is introduced for rapid fault locating, isolating and self-healing in active power distribution network without relying on the primary station. The intelligent distribution automation terminal based on SOC chip is also developed and applied to implement this strategy, which provides an automatic solution for rapid fault location, isolation and self-healing of active distribution network.