Results 51 to 60 of about 658 (194)

Isolation and Protection of the Motor-Generator Pair System for Fault Ride-Through of Renewable Energy Generation Systems

IEEE Access, 2020
Renewable energy units are required to have reliable fault ride-through capability to prevent large-scale disconnection of renewable energy plants due to grid faults.
Yujun Gu, Yongzhang Huang, Qianyu Wu, Chenyang Li, Haisen Zhao, Yang Zhan   +5 more
doaj   +1 more source

Fault ride‐through control based on voltage prioritization for grid‐forming converters

IET Renewable Power Generation, 2023
This paper discusses that the existing grid codes on the fault ride‐through (FRT) operation have certain complications to be implemented in the grid‐forming (GFM) converters.
Saman Dadjo Tavakoli, Eduardo Prieto‐Araujo, Oriol Gomis‐Bellmunt, Samuel Galceran‐Arellano   +3 more
doaj   +1 more source

Impact of mental health disorders on problematic substance use and effectiveness of brief intervention among young people in foster care

Addiction, EarlyView.
Abstract Background and aims Brief interventions delivered in healthcare settings represent a promising substance use prevention and early intervention strategy for youth in foster care, among whom early life adversity and resulting psychological sequalae increase risk for problematic substance use.
Courtney B. Dunn, Austin Blake, Katie Fox, Mary V. Greiner, Sarah J. Beal   +4 more
wiley   +1 more source

Bureaucrat assignments as instruments of political control: Theory and evidence from land administration officials in India

American Journal of Political Science, EarlyView.
Abstract This paper investigates how politicians use the assignment of officials to geographical posts—a personnel system found in many countries—as a system of incentives to control, and possibly corrupt, bureaucratic behavior. The argument is developed with a matching model and tested with a nationwide survey of Indian officials who administer land ...
Anustubh Agnihotri, Aditya Dasgupta, Devesh Kapur   +2 more
wiley   +1 more source

Fault ride-through of renewable energy conversion systems during voltage recovery

Journal of Modern Power Systems and Clean Energy, 2016
Asymmetrical voltage swells during recovery of a short-circuit fault lead to fluctuations in the dc-link voltage of a renewable energy conversion system (RECS), and may induce reversed power flow and even trip the RECS. This paper studies characteristics
Ruiqi Li, Hua Geng, Geng Yang
doaj   +1 more source

Brand Equity and Debt Diversification

Financial Management, EarlyView.
ABSTRACT This study examines how brand equity influences the diversity of firms’ debt structures. We propose that brand equity, by signaling larger and more stable future cash flows and greater product market awareness, alters the fundamental trade‐offs that drive optimal debt type diversity.
David C. Mauer, Miaomiao Yu, Aihuan Zhang   +2 more
wiley   +1 more source

Coordinated DC Fault Ride‐Through Control for a Grid‐Forming Wind‐Storage System With VSC‐HVDC Integration Under Transmission Constraints

Engineering Reports
Due to the complexity of wind farm environments and the particularity of DC systems, fault signals may be affected by numerous factors, which can compromise the accuracy of fault detection.
Lei Chen, Qi Han
doaj   +1 more source

“Why?”: C. Wright Mills on the Spirit of the Classical Sociological Tradition and Positivist Versus Critical Sociology

Sociology Lens, EarlyView.
ABSTRACT Despite their very diverse interests, the classical sociological thinkers were concerned with analyzing the dramatic social transformations in the wake of colonialism, slavery, and modern industrial capitalism as well as the multiple revolutions, particularly in relation to the new forms of social inequalities and power disparities.
Zaheer Baber
wiley   +1 more source

Fault Ride-Through Control Strategy for Variable Speed Pumped Storage Unit with Full-Size Converter

Applied Sciences
Fault ride-through is a prerequisite for ensuring continuous operation of a variable-speed pumped storage unit with a full-size converter (FSC-VSPU) and providing support for the renewable energy and power grid.
Huabo Shi, Lijie Ding, Xueyang Zeng, Yuhong Wang, Pengyu Pan, Gang Chen, Yangtao Liu, Jianquan Liao   +7 more
doaj   +1 more source

Multifunctional scheme for frequency/voltage/stability control in HVDC line under concurrent cyber‐attacks and faults

IET Generation, Transmission & Distribution, 2022
This paper presents a control mechanism on high voltage direct current (HVDC) transmission line for frequency/voltage regulation, fault ride through (FRT) capability, and cyber‐attack/fault detection.
Reza Hemmati, Hossien Faraji
doaj   +1 more source