Transmission Capability Assessment of Distributed Energy Resources Using Measurement-Based Site-Dependent Single-Port Model

In the recent advance, the site-dependent single-port model has been utilized to define a site-dependent short circuit ratio for the transmission capability assessment of distributed energy resources (DERs). However, miscalculations have been founded in the extensive simulations using the site-depen...

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Veröffentlicht in:IEEE transactions on power systems 2021-03, Vol.36 (2), p.1515-1525
Hauptverfasser: Liu, Jian-Hong, Cheng, Jie-Sheng
Format: Artikel
Sprache:eng
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Zusammenfassung:In the recent advance, the site-dependent single-port model has been utilized to define a site-dependent short circuit ratio for the transmission capability assessment of distributed energy resources (DERs). However, miscalculations have been founded in the extensive simulations using the site-dependent short circuit ratio. Such miscalculation is due to the mismatch between the DER's injection real power sensitivity of the existing site-dependent single-port model and the one measured in the power grid. In this paper, the measurement-based site-dependent single-port model is proposed. The proposed model is constructed through modifying the equivalent parameters of the existing site-dependent single-port model by using a measurement-based alleviation multiplier. Accordingly, the mismatch in the injection real power sensitivity can be indeed eliminated in the proposed measurement-based site-dependent single-port model. The associated measurement-based site-dependent short circuit ratio will follow and be further defined for the transmission capability assessment of DERs. The simulations on IEEE 14-bus and IEEE 57-bus test systems are presented to validate the accuracy of the proposed measurement-based site-dependent single-port model.
ISSN:0885-8950
1558-0679
DOI:10.1109/TPWRS.2020.3015395