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  • × Yang Liu
  • × 材料科学(综合)
  • × 2022
 全选  【符合条件的数据共:2条】

IOP Conference Series,2022年

Xiaohan Li, Yang Liu, Yuhui Zhu

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Complex changes in climate change have caused numerous changes, such as rising temperature and increasing in precipitation frequency, representing dynamic environmental changes for birds. It results in birds' responses, such as changes in migration routes. To better understand the responses, the study aims to reveal the impacts of climate change on birds' behavior and proper approaches toward addressing its effects. The study shows that climate change has caused advanced spring migration, changes in birds' habitat, higher possibility of disease transmission, earlier egg-laying time, less food availability, and a decline in the bird population. The study also lists possible measures to mitigate climate change's influence, including environmental policies, partnership with non-government organizations, and decreasing greenhouse emissions. In the future, people should consider identifying knowledge gaps of the link between climate change birds from efforts of interdisciplinarity and multi-academic fields. The same approach also applies to plausible solutions exploration. The study provides a comprehensive summary of the effects of climate change on birds, as well as briefly illustrates the current approaches to mitigate its impacts. It increases the awareness of climate change's impacts for the present generation, in turn encouraging them to take progressive actions to address the problem for the future generation.

    IOP Conference Series,2022年

    Yunling Wang, Fang Liu, Xinwei Du, Bo Li, Yang Liu, Libo Jiang

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    Aiming at the problem of low-frequency oscillation in the weak power grid, a low-frequency oscillation suppression strategy considering the dynamic power characteristics of the energy storage system (ESS) is proposed in this paper. Firstly, the principle of low-frequency oscillation in the power system is analyzed by using a single machine infinite bus system. Secondly, considering the dynamic characteristics of the ESS output active power, a controller for the ESS to suppress low-frequency oscillation is designed, which can provide positive damping for frequency oscillation of the power grid. Finally, the simulation analysis and experimental results of an actual weak grid are carried out to verify the effectiveness and feasibility of the proposed method. The results show that the suppression effect of the low-frequency oscillations is related to the ESS location in the weak power grid.