Abstract
Abstract The structure of electrical power networks is such that there are a number of nodes for which the power injections are known to be exactly zero. These zero-power injections can be treated as equality constraints in the power system state estimation problem. This paper reviews the methods for handling equality constraints and presents a novel technique based on a direct elmination of the dependent variables. A general algorithm is presented which can be adapted to any Weighted Least-Squares (WLS) solution technique. A method based on Givens rotations is particularly suitable, and is described in detail in the paper. Since this method tends to be time-consuming, a hybrid method is also presented which can substantially improve the solution time and reduce storage requirements. The paper also presents some results on the use of the commonly employed weighting method. The conventional and proposed algorithms are tested using an IEEE power system and a New Brunswick Electric Commission transmission network.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
