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Enhanced Modelling Framework for Equivalent Circuit-Based Power System State Estimation
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DOI：10.1109/TPWRS.2020.2974459.png)
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Abstract
En 中文
The equivalent split-circuit formulation is a novel approach that has recently been applied to a range of power system related problems. As a result, a linear and a nonlinear method for power system state estimation with simultaneous treatment of the conventional and synchrophasor measurements have been proposed. In this article, new circuit models are introduced for different combinations of conventional measurements, thus providing a complete modelling framework for these methods. Additionally, handling cases of null injections and buses with no measurements are included. Simulations are performed on several test systems in order to evaluate the performance of both methods with the enhanced modelling framework and to compare them to a hybrid constrained estimator based on the conventional WLS approach.
Keywords:
Integrated circuit modeling
Voltage measurement
Current measurement
Phasor measurement units
Transmission line measurements
Mathematical model
Power systems
State estimation
equivalent circuit formulation
phasor measurement units
conventional measurements
power system modelling
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