Results 11 to 20 of about 195,584 (269)

Online dynamic voltage stability assessment method of AC/DC power systems

The Journal of Engineering, 2018
The reactive power absorption of conventional line commutated converter–high-voltage direct current transmission systems challenges on the voltage stability of AC/DC power systems. Many online dynamic voltage stability assessment approaches have been put
Yongbo Wang, Kuan Li, Guohui Zhang, Jianjun Su, Jiping Xie, Jialu Li   +5 more
doaj   +1 more source

Research on AC/DC power system simulator

Energy Reports, 2021
AC/DC hybrid power supply will become an important form of power distribution in the future. Its simulation is the indispensable mean for AC/DC power system research and related equipment/system development.
Wei Deng, Wei Pei, Xue Zhang, Qi Wu, Li Kong   +4 more
doaj   +1 more source

Vulnerability analysis of power grid structure based on complex network theory

Frontiers in Energy Research
IntroductionThe key nodes of an intelligent distribution network significantly impact the reliability and stability of the distribution network’s operation. The failure of these key nodes can severely affect the safe operation of the distribution network.
Zhichun Yang, Huaidong Min, Jie Zhao, Xuzhu Dong, Fan Yang, Chenhao Wang, Nan Zhang   +6 more
doaj   +1 more source

Two stage coordination planning method of wind power and storage considering uncertainty of distributed source-load

Frontiers in Energy Research
IntroductionWith the widespread integration of distributed power sources, the power grid is facing challenges such as increased losses, rising costs, voltage fluctuations, and overload, resulting in greater operational complexity.
Shi Su, Jie Zhao, Qingyang Xie, Lei Shang, Chenhao Wang, Siyi Xiao, Minghui Deng   +6 more
doaj   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

FEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi, Pilar Samperio Ventayol, Natalie Burkard, Nicolas Schlegel, Carmen Aguilar, Sina Bartfeld   +5 more
wiley   +1 more source

Research on load frequency control of multi‐microgrids in an isolated system based on the multi‐agent soft actor‐critic algorithm

IET Renewable Power Generation
Load variation, distributed power output uncertainty and multi‐microgrids network complexity have brought great difficulties to the frequency stability of the whole microgrid.
Li Long Xie, Yonghui Li, Peixiao Fan, Li Wan, Kanjun Zhang, Jun Yang   +5 more
doaj   +1 more source

Organoids in pediatric cancer research

FEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source

An adaptive assessment method of power system transient stability considering PMU data loss

IET Generation, Transmission & Distribution
Transient stability assessment (TSA) plays an important role in ensuring the reliable operation of power systems. With the popularity of phasor measurement units (PMUs), data‐driven TSA methods have been widely concerned.
Binyu Ma, Jun Yang, Xiaotao Peng, Kezheng Jiang, Dan Liu, Kan Cao   +5 more
doaj   +1 more source

Grid structure optimization using slow coherency theory and holomorphic embedding method

International Journal of Electrical Power & Energy Systems
This paper addresses the issue of complex fault oscillation modes and weak voltage points in large power systems by proposing a network structure optimization method that balances system synchrony and node voltage stability.
Fei Tang, Mo Chen, Yuhan Guo, Jinzhou Sun, Xiaoqing Wei, Jiaquan Yang, Xuehao He   +6 more
doaj   +1 more source