Open AccessAllocation of PMU channels at substations for topology processing and state estimation
Author(s) -
Müller Heloisa H.,
Castro Carlos A.,
Dotta Daniel
Publication year - 2020
Publication title -
iet generation, transmission and distribution
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.92
H-Index - 110
eISSN - 1751-8695
pISSN - 1751-8687
DOI - 10.1049/iet-gtd.2019.0760
Subject(s) - observability , phasor measurement unit , reliability (semiconductor) , units of measurement , phasor , heuristic , automation , computer science , genetic algorithm , process (computing) , reliability engineering , grid , state (computer science) , mathematical optimization , engineering , electric power system , algorithm , power (physics) , mathematics , artificial intelligence , mechanical engineering , physics , geometry , quantum mechanics , machine learning , operating system
The new grid operation constraints, allied to the substation automation and intelligence, require the state estimation (SE) to work even more efficiently, with reliability and accuracy. The proposed method for optimally allocating existing phasor measurement unit (PMU) channels and their resources at substations ensures reliability in the SE process even in cases of equipment malfunctioning, and guarantees the quality improvement of the SE. The proposed algorithm has two stages. In the first stage, a genetic algorithm optimally allocates the PMUs. In the second stage, a heuristic method optimises measurement and channel allocation. Equipment failure, missing data, observability issues, methods to reduce critical sets in SE results to preserve the system's observability, are also discussed.