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DOE OSTI · 1798039

A Relaxed PV Bus Model in Linear Power Flow

Hong, Tianqi·Zhao, Dongbo·Zhang, Yichen
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Abstract

The emerging multimodal active energy resource units make it necessary to introduce constant voltage amplitude buses (PV bus) in the operation of modern distribution systems. To enable the analysis of PV bus using linear power flow models, this letter proposes a relaxed PV bus model for solving power flow related problems using an indirect modeling approach. The developed PV bus model can be applied to linear power flow models in both rectangular and polar coordinates. Besides, the approximation error of the relaxed PV bus model can also be controlled and quantified. Lastly, the proposed relaxed PV bus model is validated using different test systems. According to the numerical studies, the maximum error on the PV bus approximation in all case studies is only 0.61%, and the maximum error of the supporting power at the PV buses is 6.5%.

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Hong, Tianqi, Zhao, Dongbo, Zhang, Yichen. 2020-10-29. A Relaxed PV Bus Model in Linear Power Flow. https://doi.org/10.1109/tpwrd.2020.3031758

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