Operation stability and capacity allocation of multi-machine power system coupled with pumped storage and wind power generation

Jiening Li and Wencheng Guo

Energy, 2025, vol. 336, issue C

Abstract: This paper aims to research the operation stability and capacity allocation of multi-machine power system coupled with pumped storage and wind power generation (PSWPG). Firstly, the detailed mathematical model of multi-machine power system coupled with PSWPG is established. Then, the modal characteristics of PSWPG are analyzed, and the electromagnetic power index is proposed to evaluate the operation performance of the power generation area. Further, the capacity allocation action mechanism of PSWPG on the dynamic behaviour of multi-machine power system is revealed. Finally, the effect of PSWPG outlet reactance on the suppression of frequency oscillation is explored. The results show that PSWPG can significantly enhance the damping characteristic of power grid. On average, a decreased 10 % of pumped storage power station (PSPS) capacity and a decreased 10 % of wind power station (WPS) capacity can significantly improve 1.81 % operation stability of the whole system. The increase of PSPS capacity increase the WPS operation stability. And an increase of PSPS outlet reactance and a decrease of WPS outlet reactance can improve the power damping performance of PSWPG.

Keywords: Pumped storage and wind power generation; Multi-machine power system; Operation stability; Capacity allocation; Outlet reactance (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:336:y:2025:i:c:s0360544225041830

DOI: 10.1016/j.energy.2025.138541

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