4.7 Article

Data-Driven Classification, Reduction, Parameter Identification and State Extension in Hybrid Power Systems

Journal

IEEE TRANSACTIONS ON POWER SYSTEMS
Volume 36, Issue 3, Pages 2222-2233

Publisher

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPWRS.2020.3027249

Keywords

Load modeling; Power measurement; Power system dynamics; Time measurement; Manifolds; Extraterrestrial measurements; Data classification; Dynamic model reduction; Parameter identification; State extension; Manifold learning; Diffusion map; WECC model

Funding

  1. ARPA_E [DE-AR0000223]
  2. CURENT Engineering Research Center of the National Science Foundation
  3. Department of Energy under NSF [EEC-1041877]

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This paper presents a manifold learning-based algorithm for big data classification and reduction, as well as parameter identification in real-time operation of a power system. The algorithm examines both black-box and gray-box settings for SCADA- and PMU-based measurements, and uses improved data-informed metric construction for partition trees in data classification. Demonstrations are made on a measurement tensor example of calculated transient dynamics between two SCADA refreshing scans.
The paper describes a manifold learning-based algorithm for big data classification and reduction, as well as parameter identification in real-time operation of a power system. Both black-box and gray-box settings for SCADA- and PMU-based measurements are examined. Data classification is based on diffusion maps, where an improved data-informed metric construction for partition trees is used. Data classification and reduction is demonstrated on the measurement tensor example of calculated transient dynamics between two SCADA refreshing scans. Interpolation/extension schemes for state extension of restriction (from data to reduced space) and lifting (from reduced to data space) operators are proposed. The method is illustrated on the single-phase Motor D example from a very detailed WECC load model, connected to the single bus of a real-world 441-bus power system.

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