Scanlon, Nolan
(2022)
An Interpolated-DFT Based Algorithm Suitable for P-Class Phasor Measurement Units (PMUs).
Master's Thesis, University of Pittsburgh.
(Unpublished)
Abstract
The increase in renewable energy sources and inverter connected devices have caused the traditional power system to trend towards a low-inertia network. As a result, disturbances such as harmonic distortion, faster frequency dynamics, and amplitude steps are more likely. This has led to an increase in the number of phasor measurement units (PMUs) that are being utilized across transmission and distribution networks. PMUs are important measurement devices that have led to increased reliability and resiliency in the grid. PMUs are capable of reporting measurements at 10-120 frames per second which is much faster than supervisory control and data acquisition (SCADA) systems. The core of a PMU is the synchrophasor estimation algorithm used for precise estimation of the input signal's magnitude, phase angle, frequency, and rate of change of frequency (ROCOF) which is synchronized to Coordinated Universal Time (UTC).
The increasing penetration of phasor measurement units (PMUs) in transmission and distribution networks requires synchrophasor estimation (SE) algorithms with very high levels of precision that are robust against disturbances. The proposed method provides accurate synchrophasor measurements compliant with the IEEE/IEC International Standard for Synchrophasor Measurements for P-Class PMUs for static sinusoidal input signals with large frequency deviations, dynamic input signal conditions, and for short data records (as low as 1 period of the nominal signal). The method utilizes generalized maximum sidelobe decay (GMSD) windows and accounts for leakage produced by the conjugate component of the spectrum to produce precise results without the need for large data sets, iteration, or additional filtering.
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Details
| Item Type: |
University of Pittsburgh ETD
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| Status: |
Unpublished |
| Creators/Authors: |
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| ETD Committee: |
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| Date: |
6 September 2022 |
| Date Type: |
Publication |
| Defense Date: |
5 July 2022 |
| Approval Date: |
6 September 2022 |
| Submission Date: |
7 July 2022 |
| Access Restriction: |
No restriction; Release the ETD for access worldwide immediately. |
| Number of Pages: |
107 |
| Institution: |
University of Pittsburgh |
| Schools and Programs: |
Swanson School of Engineering > Electrical Engineering |
| Degree: |
MS - Master of Science |
| Thesis Type: |
Master's Thesis |
| Refereed: |
Yes |
| Uncontrolled Keywords: |
discrete Fourier transform (DFT), interpolated DFT (IpDFT), phasor measurement unit (PMU), synchrophasor estimation (SE) |
| Date Deposited: |
06 Sep 2022 16:29 |
| Last Modified: |
19 Jul 2024 19:46 |
| URI: |
http://d-scholarship.pitt.edu/id/eprint/43382 |
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