000265972 001__ 265972
000265972 005__ 20190612151856.0
000265972 0247_ $$a10.1109/TPWRS.2019.2922073$$2doi
000265972 037__ $$aARTICLE
000265972 245__ $$aA Generalized Index for Static Voltage Stability of Unbalanced Polyphase Power Systems including Thévenin Equivalents and Polynomial Models
000265972 260__ $$c2019-06-11
000265972 269__ $$a2019-06-11
000265972 336__ $$aJournal Articles
000265972 520__ $$aThis paper proposes a Voltage Stability Index (VSI) suitable for unbalanced polyphase power systems. To this end, the grid is represented by a polyphase multiport network model (i.e., hybrid parameters), and the aggregate behavior of the devices in each node by Thévenin Equivalents (TEs) and Polynomial Models (PMs), respectively. The proposed VSI is a generalization of the known L-index, which is achieved through the use of compound electrical parameters, and the incorporation of TEs and PMs into its formal definition. Notably, the proposed VSI is capable of handling unbalanced polyphase power systems, explicitly takes into account voltage-dependent behavior (represented by PMs), and is computationally inexpensive. These features are valuable for the operation of both transmission and distribution systems. Specifically, the ability to handle the unbalanced polyphase case is of particular value for distribution systems. In this context, it is proven that the hybrid parameters required for the calculation of the VSI do exist under practical conditions (i.e., for lossy grids). The proposed VSI is validated against state-of-the-art methods for voltage stability assessment using a benchmark system which is based on the IEEE 34-node feeder.
000265972 6531_ $$ahybrid parameters
000265972 6531_ $$amultiport network model
000265972 6531_ $$apolynomial model
000265972 6531_ $$apolyphase power systems
000265972 6531_ $$aThevenin equivalent
000265972 6531_ $$aunbalanced power systems
000265972 6531_ $$avoltage stability index
000265972 700__ $$0248791$$aKettner, Andreas Martin$$g252117
000265972 700__ $$0245463$$aPaolone, Mario$$g156731
000265972 773__ $$tIEEE Transactions on Power Systems$$j-$$q1-10$$k-
000265972 8560_ $$fmario.paolone@epfl.ch
000265972 8564_ $$uhttps://infoscience.epfl.ch/record/265972/files/IEEE%20TPWRS%20VSI%20paper.pdf$$zPOSTPRINT$$s1554340
000265972 909C0 $$zMarselli, Béatrice$$xU12494$$pDESL$$mdarius.farman@epfl.ch$$0252423
000265972 909CO $$ooai:infoscience.epfl.ch:265972$$particle$$pSTI
000265972 960__ $$amario.paolone@epfl.ch
000265972 961__ $$afantin.reichler@epfl.ch
000265972 973__ $$aEPFL$$sPUBLISHED$$rREVIEWED
000265972 980__ $$aARTICLE
000265972 981__ $$aoverwrite