Results 31 to 40 of about 3,412 (219)

DC Bus Overcurrent Protection Scheme in Metro DC Traction Power Supply System Based on Boolean Logic Calculation

Chengshi guidao jiaotong yanjiu
[Objective] To enable accurate determination of DC (direct current) bus overcurrent protection in metro DC traction power supply system and enhance the selectivity of fault tripping in the system, the research on a suitable DC bus overcurrent protection ...
LIU Yuxing, ZHENG Chunchun, LAI Peixin, XIE Jinlian, XIE Yuehai, LIU Yajie   +5 more
doaj   +1 more source

Mechanism of Quasi‐Power‐Frequency Resonant Overvoltage Triggered by Multiple Lightning Strikes in High‐Voltage Alternating Current Systems Equipped With Shunt Reactor

High Voltage, EarlyView.
ABSTRACT This paper investigates the generation mechanism of quasi‐power‐frequency resonant overvoltage triggered by multiple lightning strikes in high‐voltage alternating current (HVAC) systems equipped with shunt reactors. Based on field measurements from a 500 kV AC system, equivalent and simplified circuit models have been established to analyse ...
Tao Liang, Tao Cui, Zhengxi Wang, Tongwei Guo, Xiaohui Wu, Hong Zeng, Jie Guo, Yanzhao Xie   +7 more
wiley   +1 more source

Assessing the reliability of adaptive power system protection schemes

, 2012
Adaptive power system protection can be used to improve the performance of existing protection schemes under certain network conditions. However, their deployment in the field is impeded by their perceived inferior reliability compared to existing ...
Burt, Graeme, Dysko, Adam, Abdulhadi, Ibrahim Faiek, Adrianti, A   +3 more
core   +1 more source

Comprehensive protection scheme for lines with unmeasurable branches based on 5G channels

电力工程技术, 2022
There are many unmeasurable branches along with distribution lines. The sensitivity and speed of traditional three-stage overcurrent protection lacks when applied to these lines.
ZHANG Jinhu, CHENG Yanxia, JIN Zhen, SUN Bolong, SONG Zhiwei, WEN Yu   +5 more
doaj   +1 more source

Enhancing Hydrophobic Stability of Silicone Rubber Insulators Under High‐Voltage Direct Current Stress Through Optimised Nano‐Fumed Silica Surface Area: A Dynamic Drop Test Study

High Voltage, EarlyView.
ABSTRACT The long‐term hydrophobic stability of silicone rubber (SiR) insulators is essential for their reliability in high‐voltage direct current (HVDC) applications. This study investigates the effect of nano‐silica fillers with varying specific surface areas (SSA = 120, 200 and 300 m2/g) and different concentrations of alumina trihydrate (ATH ...
Mahmoud A. Ali, Xingliang Jiang, Samir I. Gadow, Ruta W. Deusdedith   +3 more
wiley   +1 more source

Determination of protection system requirements for DC UAV electrical power networks for enhanced capability and survivability

, 2011
A growing number of designs of future Unmanned Aerial Vehicle (UAV) applications utilise dc for the primary power distribution method. Such systems typically employ large numbers of power electronic converters as interfaces for novel loads and generators.
Burt, Graeme, S.D.A. Fletcher, Norman, Patrick, Galloway, Stuart, Fletcher, Steven, P.J. Norman, G.M. Burt, S.J. Galloway   +7 more
core   +1 more source

A Modular, Accessible, and Low‐Cost Photoreactor with Precision Light and Temperature Control for Small‐Scale Reactions

Chemistry–Methods, Volume 6, Issue 6, June 2026.
This modular, low‐cost, light‐emitting diode (LED)‐based photoreactor facilitates modulation of light intensity, choice of wavelength, and thermal equilibration for photochemical reactions at a small scale with the potential to normalize research outputs across different laboratories.
Irma G. Vermeijlen, Will Anderson, Gayathri R. Ediriweera, Nicholas L. Fletcher, Craig A. Bell, Kristofer J. Thurecht   +5 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, Volume 8, Issue 6, June 2026.
Due to complex wind farm conditions, a coordinated control system was designed. It manages DC power surges during AC faults by temporarily storing excess energy and regulating voltages. This strategy optimizes unbalanced power and enables effective fault recovery, resulting in minimal voltage fluctuations and superior performance.
Lei Chen, Qi Han
wiley   +1 more source

Adaptive Overcurrent Protection for Microgrids in Extensive Distribution Systems [PDF]

, 2016
Microgrid is regarded as a new form to integrate the increasing penetration of distributed generation units (DGs) in the extensive distribution systems. This paper proposes an adaptive overcurrent protection strategy for a microgrid network.
Quintero, Juan Carlos Vasquez; id_orcid, Guerrero, Josep M.; id_orcid, Tan, Zheng-Hua; id_orcid, Jia, Chenxi, Lin, Hengwei, Liu, Chengxi   +5 more
core   +1 more source

Defense Algorithm Based on Reinforcement Learning and Digital Twin for Distribution Protection Devices Adversarial Samples

Engineering Reports, Volume 8, Issue 6, June 2026.
Power system protection devices are vulnerable to adversarial samples. We propose a digital twin and reinforcement learning framework. It trains a virtual model within safe operational boundaries, reducing the false operation rate to below 3.5%. The model's inference delay is under 10 ms, meeting real‐time protection requirements.
Wei Zhang, Shuai Zhang, Song Wang, Zheran Zheng   +3 more
wiley   +1 more source