Improved Voltage Stability Boundary Monitoring by Accounting for Variations in Thevenin Voltage Magnitude.

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Abstract

This paper identifies weakness of existing method for voltage stability assessment and proposes new approach for determining point of maximum deliverable power to a given load that accounts for the variations in the Thevenin voltage magnitude. The approach uses Thevenin equivalents seen from nodes of constant voltage magnitude and load nodes in order to determine a distance to instability. A simple five-bus system together with IEEE 14 bus system were used in order to perform dynamic simulation in PSS/E. The simulation data were used to create synthetic Phasor Measurement Unit (PMU) snapshots, which served as input to the proposed approach. The new approach is demonstrated on the two test systems, where improved accuracy in determining the point of maximum deliverable power is demonstrated. The results show that the point of maximum deliverable power to the load occurs well before the Thevenin impedance matching criteria.
Original languageEnglish
Title of host publicationProceedings of 8th IEEE PES Innovative Smart Grid Technologies Conference
Number of pages6
PublisherIEEE
Publication date2018
ISBN (Print)978-1-5386-4505-5
DOIs
Publication statusPublished - 2018
Event8th IEEE PES Innovative Smart Grid Technologies Conference - Sarajevo, Bosnia and Herzegovina
Duration: 21 Oct 201825 Oct 2018

Conference

Conference8th IEEE PES Innovative Smart Grid Technologies Conference
CountryBosnia and Herzegovina
CitySarajevo
Period21/10/201825/10/2018

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