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Fault current calculation in distribution systems with inverter‐based distributed generations

Fault current calculation in distribution systems faces the problem with participation of inverter‐based distributed generation (IBDG). This paper analyzes the fault response of IBDG in order to model it under fault condition. An adaptive algorithm based on an iterative technique is then proposed to calculate the fault current in a system with the installation of IBDG. This algorithm is first validated by the conventional fault calculation technique in case of a system without IBDG. Then, a time‐variant simulation is performed to validate the proposed algorithm for the system with IBDG. © 2013 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.