Thévenin equivalent based static contingency assessment

Research output: Patent

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Abstract

The present invention relates to a method for static security assessment of a power system and a real time static security assessment system for assessing a power system, the power system having a plurality of generators, the plurality of generators being represented in the network by a plurality of voltage controlled nodes, wherein the method for static security assessment of the power system comprises receiving information of a present state of the power system, determining a Thevenin equivalent for each voltage controlled node, determining for each voltage controlled node on basis of the determined present state of the power system and determining a first representation of the network based on the determined Thevenin equivalents, determining a modified representation of the network, wherein the modified representation is a representation of the network having at least one contingency, wherein at least one Thevenin equivalent of at least one voltage controlled node is modified due to the at least one contingency, the modified network representation being determined on the basis of the modified Thevenin equivalents, calculating voltage angles of the modified Thevenin equivalents, and evaluating the voltage angles to determine whether the network having at least one contingency admit a steady state. Also a method of providing information on a real time static security assessment of a power system is disclosed.

Original languageEnglish
IPCH02J 3/ 04 A I
Patent numberWO2015150577
Filing date08/10/2015
CountryInternational Bureau of the World Intellectual Property Organization (WIPO)
Priority date04/04/2014
Priority numberEP20140163623
Publication statusPublished - 8 Oct 2015

Cite this

Jóhannsson, H., & Møller, J. G. (2015). IPC No. H02J 3/ 04 A I. Thévenin equivalent based static contingency assessment. (Patent No. WO2015150577).