Results 11 to 20 of about 14,589,008 (193)

Analysis of the adaptability of frequency emergency control considering the active support characteristics of grid-forming new energy

电力工程技术
With the access of high proportions of new energy，synchronous generators are gradually phased out. On one hand，system inertia is reduced. On the other hand，during short-circuit faults，the low-voltage ride-through characteristics of new energy may result ...
Shuangshuang WANG, Xuelian WU, Zhaowei LI, Ling ZHU, Yuchen DAI, Defu CAI   +5 more
doaj   +2 more sources

High frequency link Uninterruptible Power Supply (UPS) system [PDF]

, 2013
This thesis was submitted for the degree of Master of Philosophy and awarded by Brunel University.The main aim of this thesis is to propose, design, simulate and build a new UPS system which can be used for compact applications.
Rasool, Emad Abdulrazzaq
core   +7 more sources

Real-time optimisation of emergency demand response and HVDC power modulation to improve short-term frequency stability of the receiving-end power systems

The Journal of Engineering, 2019
In recent years, large-capacity high-voltage direct currents (HVDCs) have been employed to transfer electricity from the west to the east of China. However, the frequent frequency drops due to HVDC blockings seriously threaten the short-term frequency ...
Luping Wang, Xiaorong Xie, Long Peng, Yinghong Hu, Yuan Zhao   +4 more
doaj   +1 more source

A novel robust frequency-constrained unit commitment model with emergency control of HVDC

Energy Reports, 2022
High-voltage direct current (HVDC) transmission systems are widely employed to transmit energy among systems with renewable energy integrated. However, the reduced system inertia and the risk of HVDC failure pose significant challenges to operators.
Sufan Jiang, Xin Zhao, Guangsheng Pan, Shan Gao, Chuanshen Wu, Yu Liu, Sicheng Wang   +6 more
doaj   +1 more source

Fixed-Time Distributed Secondary Control for Islanded Microgrids With Mobile Emergency Resources Over Switching Communication Topologies

IEEE Access, 2021
Mobile emergency resources (MERs) are critical to the resilience of distribution systems for an emergency response to natural disasters. However, after disasters, the communication network of MERs may be unreliable.
Zhenjie Wu, Tianen Huang, Yajun Mo, Xiang Li, Yuantao Wang, Jian Tang, Tao Niu, Pei Liao, Lin Xue, Yan Xia   +9 more
doaj   +1 more source

Parameter Estimation Method for Virtual Power Plant Frequency Response Model Based on SLP

Energies
In adapting to the double-high development trend of high-voltage direct current (HVDC) receiving-end power systems and solving optimization problems in emergency frequency control (EFC) supporting virtual power plants (VPPs) in large-scale power systems,
Zheng Shi, Haixiao Zhu, Haibo Zhao, Peng Wang, Yan Liang, Kaikai Wang, Jie Chen, Xiaoming Zheng, Hongli Liu   +8 more
doaj   +1 more source

Optimization of emergency frequency control strategy for power systems considering both source and load uncertainties

Frontiers in Energy Research
With the increasing integration of renewable energy sources and the presence of numerous controllable loads such as electric vehicles and energy storage in the modern power system, higher nonlinearities and uncertainty both sources and loads are ...
Shi Zhang, Shao Yi Ren, Bo Zhang, Jiang Zhe Feng, Xin Gang Zhang, Yi Chao Wu, Li Xia Sun   +6 more
doaj   +1 more source

Evidence‐Based Clinical Practice Guidelines for the Management of Pediatric Febrile Neutropenia: Resource‐Sensitive Recommendations for the Asian Continent

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Febrile neutropenia (FN) is a frequent and serious complication in children receiving cancer therapy. Standardizing FN management across Asia is challenging due to variable healthcare infrastructure, diagnostic capacity, and infection patterns; however, it could improve resource use and patient outcomes.
Joliza Patricia Cañeba, Shweta Bansal, Tea Reljic, Allyne Montecillo‐Aguelo, Hamidah Alias, Farrah Amaranto, Maria Stella Aquino‐Calingasan, Bambang Ardianto, Eggi Arguni, Sally Blair, Thi Tam Dang, Maria Beatriz Gepte, Samanmalee Gunasekara, Andini Handayani, Miriam Kimpo, Catherine G. Lam, Nawachai Lertvivatpong, Sergio Licona, Ana Loseo, Ratha Mlis, Vivian Moreno Berrio, Nguyen Hoai Anh, Anna Lisa Ong‐Lim, Ha Thu Pham, Krishna Sagar Sharma, Bun Sereyleak, Sally Jane G. Velasco‐Aro, Su Yadana, Ambuj Kumar, Sheena Mukkada   +29 more
wiley   +1 more source

An optical fibre-based frequency dissemination network for Australia

, 2011
An optical-fibre network is being planned for distribution of optical and microwave reference frequencies in Australia. This network would connect a number of research facilities and the National Measurement Institute (NMI), allowing long-range ...
Luiten, A., Orr, B., Wouters, M., Gray, M., He, Y., Shaddock, D., Hsu, M., Warrington, R., Aben, G., Baldwin, K.   +9 more
core   +1 more source

Uncovering Inequities: The Role of Social Determinants of Health in Hospitalized Adolescents and Young Adults With Heavy Menstrual Bleeding

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Heavy menstrual bleeding (HMB) is a common condition among adolescents and young adults (AYAs) and is the leading cause of iron deficiency anemia (IDA) in this population. Growing evidence suggests that social determinants of health (SDOH) influence menstrual bleeding patterns, access to care, and treatment. However, no studies have
Maria Carter‐Febres, Cristina Tarango, Ashley Childress, Chunyan Liu, Evan Thomas, Jennifer Pomales, Eric S. Mullins   +6 more
wiley   +1 more source