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Probabilistic Voltage Stability Assessment Considering Variability of Wind Power

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posted on 03.01.2020 by Moumita Sarkar, Anca Daniela Hansen, Poul Ejnar Sørensen
Traditional voltage stability assessment methods do not include temporal variation of renewable power generations like wind. This paper proposes a novel methodology for probabilistic voltage stability assessment methodology which can be used in conjunction with any of the existing traditional voltage stability indices. Historical wind power data are used to determine probabilistic distribution of wind power at future instant based on wind power value at current instant. Based on the probabilistic risk of increase and decrease of wind power at future instant, two probabilistic voltage stability indices are computed. The worse case value among the two indices are used as prediction of voltage stability index at future instant, based on current system parameters. Effectiveness of the proposed methodology in predicting proximity of the system voltage collapse is illustrated through case studies and time-series simulations. Results show that proposed methodology predicts more realistic proximity to voltage collapse than traditional stability assessments.

Funding

Security Assessment of Renewable Power Systems (SARP) project funded by Energinet under the Public Service Obligation scheme (Forskel 12427)

History

Email Address of Submitting Author

mosar@dtu.dk

ORCID of Submitting Author

0000-0003-0706-2370

Submitting Author's Institution

Technical University of Denmark

Submitting Author's Country

Denmark

Licence

Exports

Licence

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