Mutually Coupled Transmission Line Parameter Estimation and Voltage Profile Calculation Using One Terminal Data Sampling and Virtual Black-Box

In this paper, an accurate parameter identification algorithm is proposed for transient voltage profile calculation of the unknown transmission lines. This method is based on the virtual black-box method and uses single-ended data sampling, where the input data include voltage and current samples ob...

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Bibliographic Details
Published in:IEEE access 2019, Vol.7, p.106805-106812
Main Authors: Ghiasi, Seyyed Mohammad Sadegh, Abedi, Mehrdad, Hosseinian, Seyed Hossein
Format: Article
Language:English
Subjects:
Algorithms
Current measurement
Data sampling
Electric potential
Electronic devices
Mathematical analysis
Mathematical model
Measuring instruments
One terminal sampling
Parameter estimation
Parameter identification
Power system transients
Power transmission lines
recursive estimation
Synchronism
time domain analysis
Transmission line measurements
Transmission lines
Voltage
Voltage measurement
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Summary:In this paper, an accurate parameter identification algorithm is proposed for transient voltage profile calculation of the unknown transmission lines. This method is based on the virtual black-box method and uses single-ended data sampling, where the input data include voltage and current samples obtained by measuring at one end of the line in transient mode. A mathematical formulation is proposed to separate the sampled data and form a virtual black-box system with virtual inputs and outputs. The virtual black-box is designed, such that the system coefficients relating the virtual outputs and inputs are the known functions of transmission line parameters in the real world. The coefficient values are then calculated by employing the recursive least squares estimation method, which minimizes the sum of squared errors of observations. Using this method, transmission line parameters and transient voltage profile are calculated from only one terminal data with no need of measuring devices, data synchronization, and communication devices at both sides. The efficiency of the proposed method is tested and proved through the EMTP simulations.
ISSN:2169-3536
2169-3536
DOI:10.1109/ACCESS.2019.2901813