Iterative algorithm to estimate fundamental phasor and frequency values for a PMU calibrator based on a general signal-fitting model
US10901014B1 · kind B1 · utility
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Key dates
| Filing date | Oct 22, 2020 |
| Grant date | Jan 26, 2021 |
| Priority date | — |
| Expiry date | Oct 22, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY04S10/22
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A high-accuracy synchrophasor estimation algorithm for PMU calibration is disclosed. This method can construct a dynamic phasor fitting model. Then, an iterative solution algorithm based on nonlinear fitting can be used to estimate the phasor and frequency, which can include one parameter during the iterations. Moreover, a method is disclosed for calculating the ROCOF based on the least-squares method to improve the ROCOF dynamic accuracy.
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