Fault Detection and Isolation of Distributed Inverter-Based Microgrids

Conference paper
Part of the Advances in Intelligent Systems and Computing book series (AISC, volume 1196)


This paper deals with a fault detection and isolation strategy for microgrids fed by voltage source inverters. To increase the reliability of microgrids, a model-based FDI concept for the detection of line and inverter faults is presented. First, a scalable overall state space model is presented to describe the power flow of a generic micogrid with an arbitrary number of droop controlled inverters. For this purpose, aggregated single inverter models are combined into a multi-inverter model, which is connected to a network of arbitrary topology. It is shown how this model serves as a basis to develop an observer-based FTC algorithm. Finally, simulation studies are carried out for a system with three droop controlled inverters, six network nodes and two load sinks. It will be shown how single network line faults and inverter faults can be detected and partially isolated with the centralized approach.


FDI FTC Power systems Micogrid 


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© Springer Nature Switzerland AG 2020

Authors and Affiliations

  1. 1.Department of Engineering I, Control Engineering GroupUniversity of Applied Sciences Berlin (HTW)BerlinGermany

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