Results 71 to 80 of about 7,321,935 (205)

Overvoltage Elimination via Distributed Backstepping-Controlled Converters in Near-Zero-Energy Buildings Under Excess Solar Power to Improve Distribution Network Reliability

Energies
This work uses battery-coupled power electronic converter systems and distributed backstepping controllers to improve the reliability of electrical distribution networks.
J. Dionísio Barros, Luis Rocha, A. Moisés, J. Fernando Silva   +3 more
doaj   +1 more source

A Review of Transient Support and Security‐Stability Enhancement Control Strategies for Grid‐Forming Voltage Source Converter‐Based High Voltage Direct Current Transmission

High Voltage, EarlyView.
ABSTRACT Amid the ongoing global energy transition, the short‐circuit ratios of AC power grids are continuously decreasing. Grid‐forming voltage source converter‐based high voltage direct current transmission (GFM VSC‐HVDC) systems have therefore come to the forefront of attention.
Cheng Peng, Guangfu Tang, Yuexi Yang, Xiao Zhou, Chong Gao, Zhiyuan He, Xinying Wang, Hui Pang   +7 more
wiley   +1 more source

Load Rejection Overvoltage Suppression and Parameter Design Method of UHV AC Transmission Line

UHV (ultra-high voltage) by instant AC transmission system is accompanied by huge reactive power transmission. When the load drops sharply, it is easy to produce serious power frequency overvoltage, which is also defined as load rejection overvoltage ...
Wang Ma, Yixing Ding, Rusi Chen, Yingge Wang, Dian Xu, Haiguang Liu, Guanqun Sun   +6 more
core   +1 more source

Analyses on an electronic voltage transformer's failure by its resonance with very fast transient overvoltage and suppression

High Voltage
As voltage measuring devices are widely used in the high voltage power system with a primary‐secondary‐fusion structure, electronic voltage transformers are directly connected to the primary conductor and would face much more serious electromagnetic ...
Houda Zhu, Qing Chen, Hongbin Li, Yue Tong, Linshan Han, Yang Jiao   +5 more
doaj   +1 more source

Lightning Overvoltage Response Modeling and Protection Design for Solid State Transformer

IEEE Access
The rapid development of the AI and ICT industry has driven massive data center construction. Compared to conventional LFT (line-frequency transformer)-isolated conversion system, SST-based uninterruptible power supply solution offers high efficiency ...
Jiatong Zhang, Jianxiong Yu, Jie Ming, Jiajie Duan, Chushan Li   +4 more
doaj   +1 more source

Design of Hybrid Control Algorithm for Fault Ride-Through of Photovoltaic System

IEEE Access, 2019
This paper proposes a novel control algorithm to enhance the fault ride-through (FRT) capability of a photovoltaic (PV) system. In this method, the overcurrent of the grid-tied inverter is suppressed to a preset value using model current predictive ...
Feng Zheng, Yiqiang Chen, Tao Ye, Yachao Zhang, Fang Guo, Yi Zhang   +5 more
doaj   +1 more source

Co‐Optimisation of Battery Energy Storage Systems for Voltage Regulation and Reverse Power Flow Control in PV‐Enriched Low Voltage Distribution Network

IET Smart Energy Systems, EarlyView.
A hybrid GA–PSO framework determines the optimal placement and sizing of distributed battery energy storage systems in a PV‐enriched low voltage feeder, whereas dynamic consensus control (DCC) coordinates their operation. The integrated approach mitigates voltage rise and reverse power flow and promotes balanced utilisation of multiple storage units ...
Nirakar Nepal, Raagini Upadhyay, Samvid Neupane, Udghosh Bhandari, Anil Kumar Panjiyar   +4 more
wiley   +1 more source

Influence Analysis of 500 kV Power Transmission and Transformation Project on Power Frequency Overvoltage Based on PSCAD

Smart Grid, 2017
500 kV输变电工程的线路模型选择对操作过电压有着不同的影响以及实际工程中不同检修方式都对工频过电压有影响，针对上述问题笔者应用PSCAD电磁暂态仿真软件对在Bergeron、Mode Model、Phase Model线路模型下进行仿真验证和分析在十二种检修方式下对工频过电压影响最大的一种方式，通过实际工程说明操作过电压在Mode Model、Phase Model线路模型下更接近实际。对于双回路的输变电工程在不同检修方式下，对于其中一条线路分析，与它相邻线路检的修对其工频过电压影响最严重，在实际工程中，工作人员应该多加注意。笔者通过以上分析对500 kV实际输变电工程启动和检修有一定的指导意义。 The line model selection of 500 kV transmission ...
openaire   +1 more source

Analysis on the fault characteristics of three-phase short-circuit for half-wavelength AC transmission lines

Global Energy Interconnection, 2018
Half-wavelength AC transmission (HWACT) is an ultra-long distance AC transmission technology, whose electrical distance is close to half-wavelength at the system power frequency. It is very important for the construction and operation of HWACT to analyze
Xuankun Song, Teng Feng, Liu Han, Travis M. Smith, Xinzhou Dong, Wenxuan Liu, Rui Zhang   +6 more
doaj   +1 more source

AGIcam: An open‐source Internet of Things–based camera system for automated in‐field phenotyping and yield prediction

The Plant Phenome Journal, Volume 9, Issue 1, December 2026.
Abstract Continuous, high‐frequency monitoring is essential to capture rapid phenological transitions and dynamic crop responses to the environment. However, most phenotyping platforms lack the temporal resolution and automation required for consistent, season‐long trait assessment.
Worasit Sangjan, Nisit Pukrongta, Trevor Buchanan, Arron H. Carter, Michael O. Pumphrey, Sindhuja Sankaran   +5 more
wiley   +1 more source