{ "id": "1710.10544", "version": "v1", "published": "2017-10-29T00:49:43.000Z", "updated": "2017-10-29T00:49:43.000Z", "title": "Hierarchical and Distributed Monitoring of Voltage Stability in Distribution Networks", "authors": [ "Liviu Aolaritei", "Saverio Bolognani", "Florian Dörfler" ], "categories": [ "math.OC" ], "abstract": "We consider the problem of quantifying and assessing the steady-state voltage stability in radial distribution networks. Our approach to the voltage stability problem is based on a local, approximate, and yet highly accurate characterization of the determinant of the Jacobian of the power flow equations parametrized according to the branch-flow model. The proposed determinant approximation allows us to construct a voltage stability index that can be computed in a fully distributed or in a hierarchical fashion, resulting in a scalable approach to the assessment of steady-state voltage stability. Finally, we provide upper bounds for the approximation error and we numerically validate the quality and the robustness of the proposed approximation with the IEEE 123-bus test feeder.", "revisions": [ { "version": "v1", "updated": "2017-10-29T00:49:43.000Z" } ], "analyses": { "keywords": [ "steady-state voltage stability", "distributed monitoring", "power flow equations", "hierarchical", "voltage stability index" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }