abstract

• The increasing penetration of power electronics in electric networks has made the usage of detailed wideband models vital to study high-frequency oscillations, which other-wise would be almost impossible to detect. In this regard, the frequency-dependent effect of tie-lines has been considered a crit-ical feature in analyzing these troubles. However, incorporating them as small-signal impedance models is still a challenging task due to the non-rational of the model, so they are commonly approximated using lumped-parameter models or rational fit-ting techniques. Contributing to this area, the paper presents an improvement to the modeling of transmission lines (TL) computing their impedance models considering full frequency-dependency. Based on the hyperbolic relationships of voltage-current on the sending side of the TL and the Park transform, the impedance in DQ-domain is determined. This proposal does not rely on rational fitting nor repetitive time domain simulations. The effectiveness and accuracy of the proposal are validated through simulations in PSCAD-EMTDC. © 2022 IEEE.

authors

• Segundo Ramírez Juan

publication date

• 2022-01-01

funding provided via

• 1311344; Secretaría de Educación Pública, SEP; Consejo Nacional de Ciencia y Tecnología, CONACYT: 746757, A1-S-29705  Grant

published in

• 2022 IEEE International Autumn Meeting on Power, Electronics and Computing, ROPEC 2022  Proceedings

keywords

• Impedance-Based Method; Power Electric Systems; Power Electronics; Transmission Line Model Electric power transmission; Electric power transmission networks; Power electronics; Time domain analysis; Frequency dependent effects; High frequency oscillations; Impedance based methods; Impedance modeling; Power-electronics; Small signal model; Tie-line; Transmission line modeling; Transmission-line; Wide-band modelling; Electric lines

Digital Object Identifier (DOI)

• 10.1109/ROPEC55836.2022.10018722

PubMed ID

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