期刊
IEEE TRANSACTIONS ON POWER SYSTEMS
卷 33, 期 6, 页码 6600-6610出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPWRS.2018.2847289
关键词
Distribution system; distribution system state estimation; ensemble Kalman filter; phasor measurement unit; state estimation
资金
- Natural Sciences and Engineering Research Council (NSERC) of Canada
In this paper, a past-aware state estimation (PASE) method (for static state estimation) is proposed for power distribution systems, which takes previous estimates into account to improve the accuracy of the current one, using an Ensemble Kalman Filter (EnKF). Fewer phasor measurements units are needed to achieve the same estimation error target than snapshot-based methods. Furthermore, contrary to existing methods, the proposed approach does not embed power flow equations into the state estimator, thus making it a versatile technique. The theoretical formulation of the EnKF-based PASE presented in the paper has been validated considering a 33-bus distribution system and using power consumption traces from real households.
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