Fast analytical calculation-based modeling method and fault ride-through parameters selection to enhance short-term voltage stability of grids with large-scale photovoltaic power plants.
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| Title: | Fast analytical calculation-based modeling method and fault ride-through parameters selection to enhance short-term voltage stability of grids with large-scale photovoltaic power plants. |
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| Authors: | Li, Boyang1 (AUTHOR), Xu, Shiyun2 (AUTHOR), Li, Weixing1 (AUTHOR) wxli@dlut.edu.cn, Chao, Pupu3 (AUTHOR), Liang, Xiaodong4 (AUTHOR), Li, Zhimin1 (AUTHOR) |
| Source: | International Journal of Electrical Power & Energy Systems. Mar2025, Vol. 164, pN.PAG-N.PAG. 1p. |
| Subjects: | Photovoltaic power systems, Electric power distribution grids, Voltage, Problem solving |
| Abstract: | • Dynamic interactions between the grid voltage and the PVPP's FRT behaviors is formulated as a real-time varying impedance. • A simulation-free analytical method is proposed for fast calculation of STV dynamic trajectories of the grid with PVPPs. • The dominant FRT parameters of PVPPs are selected and validated based on the recommended STV evaluation index. Large-scale centralized photovoltaic power plants (PVPPs) connected to a power grid may cause short-term voltage instabilities during fault ride-through (FRT) processes. However, analyzing and optimizing short-term voltage characteristics requires extensive time-consuming simulations due to complex dynamic interactions between the grid voltage and FRT behaviors of PVPPs. To solve this problem, an analytical simulation-free method is proposed in this paper. Firstly, the coupling between the grid voltage and the PVPP's FRT behaviors is formulated as a real-time varying impedance. Then, a fast analytical method is proposed to derive the grid short-term voltage dynamic trajectories during the complete FRT processes, and the non-monotonic impact of the PVPP's FRT parameters on short-term voltage stabilities is demonstrated. Further, a selection method for the PVPP's FRT parameters is proposed and verified using a regional grid. The proposed method improves the grid's short-term voltage stability with small computational burdens. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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