Performance analysis of a new fast negative sequence power injection oriented islanding detection technique for photovoltaic photovoltaic based voltage source converter based micro grid operation


This study presents a brand new study on islanding detection methodology for photovoltaic (PV) based mostly voltage supply converter (VSC) system incorporated with multiple distributed energy resources-based mostly microgrid. The VSC system is essentially controlled by positive sequence power–voltage loop, where dc-link capacitor voltage and purpose of common coupling power elements are measured parameters. Throughout grid disconnection an islanding detection loop is additional implemented with existing management, primarily based on negative sequence active and reactive powers of coupling bus. The threshold for the feedback sequence voltage is decided to keep up a negligible non-detection zone and to avoid false detection during different power quality issues. A binary tree classifier is adopted for threshold filter design to perturb disturbance parameters solely during islanding events. Worst-case situation is considered by implementing a PV-based VSC system from IEEE UL 1741 customary. The performance of the proposed islanding detection technique is investigated in MATLAB/ Simulink setting. The economical detection of islanding with a fast run on time is ensured by the result analysis, where no important effect in power quality during normal operating condition has been maintained.

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