A Tuned Whitening-Based Taylor-Kalman Filter for P Class Phasor Measurement Units
نویسندگان
چکیده
Protection-oriented (P Class) phasor measurement units (PMUs) are required to reconcile high accuracy and low latency in order promptly detect possible anomalous operating conditions power systems. Most of the existing estimators synchrophasor magnitude, phase, frequency, rate change frequency (ROCOF) voltage or current AC waveforms need acquire samples at least two line cycles meet P Class requirements specified IEEE/IEC Standard 60255-118-1:2018. In this article, instead, a multistep technique based on combination multiple signal classification (MUSIC), narrowband disturbance whitening, Taylor–Kalman Filtering (TKF) is proposed maximize even over one-cycle-long observation intervals. Both MUSIC whitening rely common theoretical framework (i.e., noise vector subspace decomposition) they applied compensate for detrimental effect off-nominal deviations harmonic distortion, respectively. The use cascaded dynamic such as TKF motivated by track in-band amplitude phase oscillations step-like changes with latency. While basic very sensitive disturbances, tuned whitening-based (TW-TKF) described article ensures superior under influence harmonics step changes, just minor performance degradation other testing reported
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ژورنال
عنوان ژورنال: IEEE Transactions on Instrumentation and Measurement
سال: 2022
ISSN: ['1557-9662', '0018-9456']
DOI: https://doi.org/10.1109/tim.2022.3162274