The Analysis of Electrical Protections of Island Mode Microgrids with High Penetration of Non-Conventional Renewable Energies.
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Abstract
The integration of distributed generation in microgrids offers a renewable alternative to conventional generation with improved power quality and reduced energy losses. However, microgrids also pose new technological challenges such as the coordination of electrical protection measures against short-circuit currents and fluctuations in the bidirectional energy flow. This research measures load and generation operating conditions to determine the best settings and overcurrent protection for microgrids. Simulations were developed for four different cases: synchronous generator bus, wind generation bus and solar generator bus 1 and 2, separate three-phase faults were caused in each bus to which each generator was connected, thus obtaining the operating curve of each relay and the process of disconnecting said bar.
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