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Qingwen Xu, Yongji Cao, Hengxu Zhang, Wen Zhang and Vladimir Terzija
Non-synchronous renewable energy sources (RESs) have strong volatility and low inertia, which brings about great challenges on the accommodation of RESs and the security and stability of power systems. This paper proposes a bi-level power system dispatch...
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Guolong Zhang, Qingwen Zhang, Feng Fan and Shizhao Shen
This study provides a simplified method that can be applied to help preliminarily estimate the snow load on a complex roof by combining the snow loads on several simple roofs, which have been provided in the load code or obtained by numerical studies.
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Zeyulin Zhang, Yanshuang Ba, Dazheng Chen, Pengru Yan, Qingwen Song, Yuming Zhang, Weidong Zhu, Chunfu Zhang and Yue Hao
All-inorganic perovskites, with their low-cost, simple processes and superior heat stability, have become potential candidate materials for photodetectors (PDs). However, they have no representative responsivity in the deep-ultraviolet (UV) wavelength re...
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Linfei Zhang, Qingwen Ren, Lei Shen, Wenyan Lu, Mei Tao and Jiafeng Gu
The 300 m-level high arch dams built in China have different degrees of valley-narrowing deformation in the initial impoundment. This unexpected phenomenon may increase the long-term safety risk of high arch dams. There are several explanations for the v...
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Qingwen Xu, Hengxu Zhang, Yongji Cao, Hao Qin and Zhimin Gao
The transmission line parameters vary with the change of temperature, which has a significant impact on power system state estimation (SE). Based on the theory of electro-thermal coordination (ETC), this paper proposes two ETC-SE approaches with the cons...
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Mengmeng Liu, Qingwen Zhang, Feng Fan and Shizhao Shen
A new approach for investigating snowdrifts around buildings and snow loads on building roofs based on a new facility named the ?snow?wind combined experimental facility? is proposed in this paper. First, the method proposed in this paper is convenient a...
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Chengcheng Lei, An Zhang, Qingwen Qi, Huimin Su and Jianghao Wang
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Zhijun Zhang, Charles U. Pittman, Jr., Shujuan Sui, Jianping Sun and Qingwen Wang
Catalytic refining of bio-oil by reacting with olefin/alcohol over solid acids can convert bio-oil to oxygen-containing fuels. Reactivities of groups of compounds typically present in bio-oil with 1-octene (or 1-butanol) were studied at 120 °C/3 h over D...
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Mi Tian, Qingwen Min, Fei Lun, Zheng Yuan, Anthony M. Fuller, Lun Yang, Yongxun Zhang and Jie Zhou
Agricultural heritage sites have been gaining popularity as tourism destinations. The arrival of large numbers of tourists, however, has created serious challenges to these vulnerable ecosystems. In particular, water resources are facing tremendous press...
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