Results 41 to 50 of about 1,562 (203)

Voltage Rise Mitigation in PV Rich LV Distribution Networks Using DC/DC Converter Level Active Power Curtailment Method

Energies, 2022
In low voltage (LV) distribution systems, the problem of overvoltage is common during the lower load intervals. This problem arises because of the high value of R/X ration of these systems. Many techniques are available in literature to cope up with this
Pankaj Verma, Nitish Katal, Bhisham Sharma, Subrata Chowdhury, Abolfazl Mehbodniya, Julian L. Webber, Ali Bostani   +6 more
doaj   +1 more source

POWER FREQUENCY OVERVOLTAGES GENERATED BY SOLAR PLANT INVERTERS

RE&PQJ
A new kind of overvoltage, not covered by present standards, has been detected in solar plants when switching the inverters off. This power frequency overvoltage can be transmitted to the MV network, giving rise to damages to some pieces of low voltage electronic equipment.
null F.J. Pazos, null F.J. Pazos, null A. Barona, null J. Amantegui, null E. Azcona, null S. Fernández   +5 more
openaire   +1 more source

Research on influencing factors of arc grounding over-voltage in mine power supply system

Gong-kuang zidonghua, 2017
In order to comprehensively study influence factors such as grounding resistance, line resistance, fault location, grounding capacitance, interphase capacitance and arc ignition time on arc grounding over-voltage in mine power supply system, typical mine
LIU Jucai, GENG Pulong, QU Bingni, SONG Jiancheng, LUO Chao, LI Yongxue, YUAN Leiming   +6 more
doaj   +1 more source

A Smart Grid Overvoltage Identification System Associated with Partial Discharge Signal and Dielectric Loss Detection

Sensors, 2023
Capacitive equipment refers to its insulation design using the principle of capacitance of electrical equipment, mainly by a variety of different capacitive components in series. Most of the equipment in the substation is capacitive equipment.
Guojin Chen, Yucheng Zhu, Zihao Meng, Weixing Fang, Wei Xie, Ming Xu, Wenxin Li   +6 more
doaj   +1 more source

Printed Flexible WO3‐Based Supercapacitors for Powering Low‐Powered Electronics in Wearable Devices and Energy Autonomous Temperature Monitoring

Advanced Electronic Materials, EarlyView.
This study represents one of the systematic demonstrations of a screen‐printed, flexible WO3‐based supercapacitor, exhibiting excellent charge‐storage performance for powering wearable electronics. The device shows a specific capacitance of 3.44 F g−1 and an energy density of 0.302 Wh kg−1 at 0.05 mA, which enable to operate multiple wearable ...
Jithin Kanathedath, Adarsh Sivan Pillai, Febin Paul, Prasutha Rani Markapudi, Nazmi Sellami, Firdaus Muhammad‐Sukki, Libu Manjakkal   +6 more
wiley   +1 more source

Infinite Functional Versatility, Formidable Limits: Evaluating Gallium‐Based Liquid Metals in Rechargeable Batteries

Carbon Energy, EarlyView.
Beyond the hype surrounding the self‐healing properties of gallium‐based liquid metals (Ga‐LMs), this perspective critically examines their functional roles in metal‐ion batteries, highlighting both their underlying merits and the often‐overlooked challenges, including non‐representative design and testing configurations, performance overestimations ...
Turly P. P. Sumanasekara, Petar Jovanović, Ali Zavabeti, Dan Yang, Mainak Majumder, Anthony F. Hollenkamp, Torben Daeneke, Mahdokht Shaibani   +7 more
wiley   +1 more source

Toward Safer and Sustainable Lithium Metal Batteries: Fluorine‐Free Solid Polymer Electrolytes

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
An analysis to assess the impact of fluorine in polymer electrolyte‐based lithium metal batteries has been conducted. It has been demonstrated that fluorine‐free LiTIM salt delivers a electrochemical performance similar to that of its fluorinated analogue salts, given the complete lithium dissociation in coordination with PEO and the restricted anion ...
David Fraile‐Insagurbe, Leire Meabe, Brigette Althea Fortuin, Itsaso Segura‐Laparra, Elene Sasieta‐Barrutia, Rosalía Cid, Javier Carrasco, Władysław Wieczorek, Maria Forsyth, Michel Armand, María Martínez‐Ibañez   +10 more
wiley   +1 more source

Comparison and Applicability of New Generation Synchronous Condenser and STATCOM Based on Characteristic Analysis in Frequency and Time Domains

发电技术, 2021
The dynamic characteristics of new generation synchronous condenser and static synchronous compensator (STATCOM) were compared in both frequency and time domains in this paper, based on which their applicability under different scenes was analyzed ...
Yichi ZHANG, Zhiqiang LI, Zhe WANG, Qinyong ZHOU, Jincheng GUO, Shan JIANG, Baoxin LI, Gang ZHAO   +7 more
doaj   +1 more source

Laser‐Textured Field‐Engineered Interface for Robust Dry‐Processed Cathodes in Lithium‐Ion Batteries

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Laser‐patterned dry electrodes applied to current collectors could serve as a promising alternative to the limitations of conventional dry electrodes. Laser technology provides a fast and simple method to enhance the surface roughness of current collectors, improving the adhesion at the electrode–current collector interface.
Chaerin Jung, Jinyeong Choi, Minsu Kim, Chaerim Kim, Minbong Park, Byungjoon Lee, Jae Ho Kim, Jin Hong Lee, Minjoon Park   +8 more
wiley   +1 more source

Identifying Faults in Power Transformers Based on Machine‐Learning Algorithms Compared With Other Techniques

Energy Science &Engineering, EarlyView.
General framework of ensemble learning technique for transformer fault diagnostics compared with traditional dissolved gas analysis methods. ABSTRACT This paper implemented a comprehensive variety of modern machine‐learning techniques, which were demonstrated to be effective in handling complex tabular data, generating accurate predictions, and ...
Osama E. Gouda, Nourhan Ramadan, Matti Lehtonen, Mohamed M. F. Darwish   +3 more
wiley   +1 more source