Results 41 to 50 of about 93,313 (298)

Improvements in Bidirectional Power-Flow Balancing and Electric Power Quality of a Microgrid with Unbalanced Distributed Generators and Loads by Using Shunt Compensators [PDF]

Energies, 2018
Improper connections of unbalanced distributed generators (DGs) and loads in a three-phase microgrid cause unbalanced and bidirectional power flow problems. The unbalanced DGs and loads may also aggravate the electric power quality (EPQ), such as voltage regulation, power factor, and unbalanced current and voltage.
Wei-Neng Chang, Chia-Min Chang, Shao-Kang Yen   +2 more
openaire   +2 more sources

Transient stability control by means of under-frequency load shedding and a hybrid control scheme

Journal of Energy in Southern Africa, 2017
An electrical network constantly faces unforeseen events such as faults on lines, loss of load and loss of generation. Under-frequency load shedding and generator tripping are traditional methods used to stabilise a network when a transient fault occurs.
P. F. Le Roux, R.C. Bansal
doaj   +1 more source

From Firm Solar Power Forecasts to Firm Solar Power Generation an Effective Path to Ultra-High Renewable Penetration a New York Case Study

Energies, 2020
We introduce firm solar forecasts as a strategy to operate optimally overbuilt solar power plants in conjunction with optimally sized storage systems so as to make up for any power prediction errors, and hence entirely remove load balancing uncertainty ...
Richard Perez, Marc Perez, James Schlemmer, John Dise, Thomas E. Hoff, Agata Swierc, Patrick Keelin, Marco Pierro, Cristina Cornaro   +8 more
doaj   +1 more source

Parameter Identification of Asynchronous Load Nodes

Energies, 2023
Asynchronous loads (AL), because of their low negative-sequence resistance, produce the effect of reduced unbalance at their connection points. Therefore, proper modeling of unbalanced load flows in power supply systems requires properly accounting for ...
Andrey Kryukov, Konstantin Suslov, Pavel Ilyushin, Azat Akhmetshin   +3 more
doaj   +1 more source

A Simple Method to Validate Power Loss in Medium Voltage SiC MOSFETs and Schottky Diodes Operating in a Three-Phase Inverter

Energies, 2020
This paper presents an original method of power loss validation in medium-voltage SiC MOSFET (metal–oxide–semiconductor field-effect transistor) modules of a three-phase inverter.
Jacek Rąbkowski, Hubert Skoneczny, Rafał Kopacz, Przemysław Trochimiuk, Grzegorz Wrona   +4 more
doaj   +1 more source

An Efficient p-Trail Based Protection Algorithm With Load Balance in Electric Power Communication Network

IEEE Access, 2018
Internet of Energy is promoting the deep integration between power grid and communication technologies, while the production, operation and service mode of the power grid are undergoing great evolutions. The expanded services need to be carried by efficient electric power communication network (EPCN).
Bin Li, Chao Lu, Sifang Liu, Yi Sun, Bing Qi, Chaoyang Zhu, Dezhi Li, Songsong Chen   +7 more
openaire   +2 more sources

Flexibility Management with Virtual Batteries of Thermostatically Controlled Loads: Real-Time Control System and Potential in Spain

Energies, 2021
Load flexibility management is a promising approach to face the problem of balancing generation and demand in electrical grids. This problem is becoming increasingly difficult due to the variability of renewable energies.
Alejandro Martín-Crespo, Sergio Saludes-Rodil, Enrique Baeyens   +2 more
doaj   +1 more source

Laser Metal Deposited Ti4822 Hollow Pipe: Experimental and Computational Modelling Study

Advanced Engineering Materials, EarlyView.
Laser metal deposition (LMD) of a crack‐free built Ti4822 alloys is challenging. This article reports outstanding characteristics of a hollow pipe that is built with LMD technology when a predicted, nontransformation substrate temperature of 800 °C is used.
Sadiq A. Raji, Monnamme Tlotleng, Samuel Skhosane, Lehlogonolo R. Kanyane, Abimbola P. I. Popoola, Sisa L. Pityana   +5 more
wiley   +1 more source

Selection of circuit and technical solutions for improvement the quality of electricity in adaptive networks with traction AC power

Известия высших учебных заведений: Проблемы энергетики, 2022
THE PURPOSE. Analysis of existing circuit and technical solutions for improving the quality of electricity in networks with traction load and assessment of their compliance with new properties of the electric network when switching to an active adaptive ...
N. V. Savina, I. A. Lisogurskiy, L. N. Lisogurskaya   +2 more
doaj   +1 more source

Evaluation of the Potential of Laser Shock Peening Compared with Cold Expansion for Improving Fatigue Resistance of Riveted Lap Joints of Aerospace Grade 7175 Al Alloy

Advanced Engineering Materials, EarlyView.
This study investigates laser shock peening for enhancing fatigue performance of riveted aerospace aluminum joints. A comparative approach with cold expansion combines fatigue testing and synchrotron X‐ray methods. Integrating mechanical testing with residual stress and strain characterization provides insights into how different treatments affect the ...
Ogün Baris Tapar, David Osman Busse, Maximilian Sprengel, Domenico Furfari, Marc‐André Nielsen, Guilherme Abreu Faria, Jérémy Epp   +6 more
wiley   +1 more source