Positive-Net-Damping Stability Criterion in Grid-Connected VSC Systems
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Other documents of the author: Sainz, Luis; Cheah-Mane, Marc; Monjo, Lluís; Liang, Jun; Gomis-Bellmunt, Oriol
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Show full item recordcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/7034
comunitat-uji-handle3:10234/8619
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Title
Positive-Net-Damping Stability Criterion in Grid-Connected VSC SystemsDate
2017-05Publisher
Institute of Electrical and Electronics Engineers (IEEE)Bibliographic citation
SAINZ, L., et al. Positive-Net-Damping Stability Criterion in Grid-Connected VSC Systems. IEEE Journal of Emerging and Selected Topics in Power Electronics, 2017.Type
info:eu-repo/semantics/articlePublisher version
http://ieeexplore.ieee.org/abstract/document/7933072/Version
info:eu-repo/semantics/submittedVersionAbstract
Resonance instabilities in power systems can be assessed with the positive-net-damping stability criterion. This criterion is a review of the complex torque coefficients method but it does not provide the frequency ... [+]
Resonance instabilities in power systems can be assessed with the positive-net-damping stability criterion. This criterion is a review of the complex torque coefficients method but it does not provide the frequency of the closed-loop oscillatory modes. This paper presents an alternative approach of the positive-net-damping stability criterion to analyze electrical resonance instability. In this approach, resonance instabilities are identified in feedback systems derived from impedance-based equivalent circuits. The proposed approach is used to characterize the frequency of closed-loop oscillatory modes and identify the physical and control parameters of the system that increase or reduce the damping of these modes. The extension of the proposed approach to study the stability of Single-Input Single-Output and Multiple-Input Multiple-Output feedback systems is analyzed and the approach is also compared with other stability methods in the literature. An example of an offshore wind power plant illustrates the theoretical study and compares the proposed approach with different methods to evaluate stability. Time-domain simulations in PSCAD/EMTDC are shown to validate the stability study. [-]
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