Computing Sensitivities from Synchrophasor Data for Voltage Stability Monitoring and Visualization
2015 (English)In: International Transactions on Electrical Energy Systems, E-ISSN 2050-7038, Vol. 6, 933-947 p.Article in journal (Refereed) Published
Wide-area early warning systems are dependent on synchrophasor data-based applications for providing timely information to operators so that preventive actions can be taken. This article proposes the use of voltage sensitivities computed from synchrophasor data for voltage stability monitoring, and a visualization approach that can be implemented in widearea early warning systems. In order to provide reliable information, this article addresses the issue of data filtering and correction, and proposes a filtering methodology for robust voltage sensitivity computation. The methodology is developed considering both positive-sequence simulations for methodology development purposes, and real phasor measurement data from a real-time (RT) hardware-in-the-loop (HIL) laboratory for testing the robustness of the developed approach under more realistic conditions. The limitations of the positive-sequence simulation approach for developing PMU-data applications are highlighted, and the challenges of working with the RT HIL lab are recognized. The proposed sensitivity computation approach have also been applied to a real PMU-data obtained from the Nordic transmission system where results are sustained.
Place, publisher, year, edition, pages
2015. Vol. 6, 933-947 p.
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-136375DOI: 10.1002/etep.1869ScopusID: 2-s2.0-84931055741OAI: oai:DiVA.org:kth-136375DiVA: diva2:675932
QC 201506302013-12-042013-12-042015-06-30Bibliographically approved