PMU Angle Deviation Detection and Correction Using Line Reactive Power Measurements

The phase angle difference between local voltage and current phasors from the phasor measurement unit (PMU), which is defined as the power factor angle (PFA), is sensitive to voltage and current transformer errors and signal transmission delay. This paper proposes a robust PFA deviation (PFAD) detec...

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Bibliographic Details
Published in:IEEE transactions on power systems 2023-05, Vol.38 (3), p.2679-2689
Main Authors: Xue, Ancheng, Gu, Lei, Hong, Haiyan, Zhao, Junbo, Kong, He, Xu, Feiyang, Chang, Naichao, Jiang, Zhengwei, Ma, Jing, Lu, Min
Format: Article
Language:English
Subjects:
Deviation
Electric potential
Errors
Measurement uncertainty
Measuring instruments
Parameter estimation
Phase shift
Phasor measurement units
Phasors
PMU
Power factor
power factor angle deviation
Power measurement
power system modeling
Q measurement
Reactive power
Signal transmission
transmission line
Transmission line measurements
Transmission lines
Voltage
Voltage measurement
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Summary:The phase angle difference between local voltage and current phasors from the phasor measurement unit (PMU), which is defined as the power factor angle (PFA), is sensitive to voltage and current transformer errors and signal transmission delay. This paper proposes a robust PFA deviation (PFAD) detection and correction method using transmission line (TL) reactive power. Specifically, the root cause of PFAD and its influence on the calculated power measurements from PMU are analyzed. Then, an expression for TL reactive power loss independent of phase angle is derived. This allows the development of a detection method for PFAD that takes into account PMU measurement errors and TL parameter deviation. A method for estimating PFAD is also proposed to correct the PFAD at both ends of a transmission line. Simulation results using both simulated and field data demonstrate the effectiveness and robustness of the proposed method.
ISSN:0885-8950
1558-0679
DOI:10.1109/TPWRS.2022.3183069