IEEE Transactions on Smart Grid· 2018Q1
Harmonic Stability in Power Electronic-Based Power Systems: Concept, Modeling, and Analysis
- 1,247citations
- Q1SCImago
- 2018year
Short summary
This paper introduces harmonic stability as a critical small-signal stability issue in power grids with high power electronic penetration, characterized by waveform distortions above and below the fundamental frequency.
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Key points
- Harmonic instability arises from the wide timescale and frequency-coupling dynamics of power electronic converters.
- Harmonic stability is a form of small-signal stability, causing waveform distortions above and below the fundamental frequency.
- Linearized models of AC-DC converters can be generalized into harmonic transfer functions using linear time-periodic system theory.
- The paper addresses challenges in modeling and analyzing harmonic stability in future large-scale power electronic grids.
AI-generated from the title and abstract; the full text is not read.
Abstract
The large-scale integration of power electronic based systems poses new challenges to the stability and power quality of modern power grids. The wide timescale and frequency-coupling dynamics of electronic power converters tend to bring in harmonic instability in the form of resonances or abnormal harmonics in a wide frequency range. This paper provides a systematic analysis of harmonic stability in the future power-electronic-based power systems. The basic concept and phenomena of harmonic stability are elaborated first. It is pointed out that the harmonic stability is a breed of small-signal stability problems, featuring the waveform distortions at the frequencies above and below the fundamental frequency of the system. The linearized models of converters and system analysis methods are then discussed. It reveals that the linearized models of ac-dc converters can be generalized to the harmonic transfer function, which is mathematically derived from linear time-periodic system theory. Lastly, future challenges on the system modeling and analysis of harmonic stability in large-scale power electronic based power grids are summarized.
The authors' abstract, as published at the source. IEEE Transactions on Smart Grid, 2018 · DOI ↗
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Field: Control and Systems Engineering
Control and Systems EngineeringEngineering