4.372   Artículos

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en línea
Thiramuni Sisitha Sameera Senarathna and Kullappu Thantrige Manjula Udayanga Hemapala    
Microgrids have been popularized in the past decade because of their ability to add distributed generation into the classic distribution systems. Protection problems are among several other problems that need solutions in order to extract the full capabi... ver más
Revista: Energies    Formato: Electrónico

 
en línea
Jalal Sahebkar Farkhani, Mohammad Zareein, Arsalan Najafi, Rui Melicio and Eduardo M. G. Rodrigues    
In recent years, power grid infrastructures have been changing from a centralized power generation model to a paradigm where the generation capability is spread over an increasing number of small power stations relying on renewable energy sources. A micr... ver más
Revista: Applied Sciences    Formato: Electrónico

 
en línea
Igor Ivankovic, Igor Kuzle and Ninoslav Holjevac    
A wide area monitoring system (WAMS) with reliable telecommunication infrastructure can be expanded and enhanced with additional protection and control functionalities using synchronized phasor data measurements. With that aim, we have developed a multif... ver más
Revista: Energies    Formato: Electrónico

 
en línea
Lidia Febrianti, Rosyidi Hamzah, Febrina Andarina Zaharnika, Puti Mayang Seruni     Pág. 86 - 95
Legal protection has a meaning as protection by using legal means or protection provided by law, aimed at the protection of certain interests, namely by making the interests that need to be protected into a legal right. to the wages of contract workers a... ver más
Revista: Journal of Economic; Bussines and Accounting (COSTING)    Formato: Electrónico

 
en línea
Lidia Febrianti, Rosyidi Hamzah, Febrina Andarina Zaharnika, Puti Mayang Seruni     Pág. 86 - 95
Legal protection has a meaning as protection by using legal means or protection provided by law, aimed at the protection of certain interests, namely by making the interests that need to be protected into a legal right. to the wages of contract workers a... ver más
Revista: Journal of Economic; Bussines and Accounting (COSTING)    Formato: Electrónico

 
en línea
Kukjoo Kim and Young-Jun Park    
This study developed decision-making factors to classify electromagnetic pulse (EMP) protection levels and determine various protection measures. We proposed three EMP protection levels of 80, 60, and 40 dB by considering the characteristics of military ... ver más
Revista: Applied Sciences    Formato: Electrónico

 
en línea
Zhengzhi Wang, Huanyu Zhao and Senyun Liu    
The icing phenomenon seriously threatens flight safety, and, therefore, the aircraft needs to be equipped with an icing protection system. Icing may still occur when the anti-icing system is in operation when the protection range or protection power is t... ver más
Revista: Aerospace    Formato: Electrónico

 
en línea
Zhiming Zhang, Qing Chen, Ranran Xie and Yi Zheng    
An improved system structure and a corresponding protection system are proposed in this paper, which aims at providing future DC microgrids with suitable protection ideas. At first, the ring-bus system is adjusted to balance the system control and protec... ver más
Revista: Energies    Formato: Electrónico

 
en línea
Johnatan M. Rodríguez-Serna, Walter M. Villa-Acevedo and Jesús M. López-Lezama    
Electric power distribution networks are exposed to both internal and external disturbances. Lightning strikes are among the latter and are responsible for a significant percentage of damage in distribution transformers, especially in rural areas. Electr... ver más
Revista: Energies    Formato: Electrónico

 
en línea
Beata Zieba, Bartosz Olejnik and Iwona Grobelna    
Common overcurrent criteria used to detect phase-to-phase short circuits in medium-voltage (MV) networks in some cases do not bring the expected results. In particular, this applies to instantaneous overcurrent protections in lines with variable ranges a... ver más
Revista: Energies    Formato: Electrónico

 
en línea
Annedore Hoppe, Immo Fritsche and Parissa Chokrai    
Personal pro-environmental action has often been explained in terms of personal cost-benefit analyses and personal capabilities. However, given that only collectives and not single individuals can effectively address large-scale environmental crises, suc... ver más
Revista: Sustainability    Formato: Electrónico

 
en línea
Elma ?ukurica, Jovana Ðukanovic     Pág. 19 - 25
With the implementation of the project "Reconstruction and modernization of the main road M-18 Podgorica-Danilovgrad", which was financed by the EBRD, an upgrade and reconstruction of the 15 km long section was carried out. In this project, which include... ver más
Revista: Journal of Road and Traffic Engineering    Formato: Electrónico

 
en línea
Bin Chang, Jie Huang and Wei-Xing Yao    
In order to improve the thermal protection performance of the active thermal protection system (TPS) based on the spike and jet, an adjustable non-ablative thermal protection system, of which the spike can be rotated in the direction of the free stream, ... ver más
Revista: Aerospace    Formato: Electrónico

 
en línea
Urtzi Lazcano, Javier Poza, Fernando Garramiola, Christian A. Rivera and Ion Iturbe    
A sensorless online temperature estimator is presented in this paper, which estimates the temperature using a novel signal injection strategy. This allows to eliminate the temperature sensors in the machine, as well as their faults, increasing the system... ver más
Revista: Applied Sciences    Formato: Electrónico

 
en línea
Yaoxiaoxue Hong, Xianling Jiang, Beibei Shi and Chang Yu    
This research investigates how fiscal environmental expenditures impact corporate environmental investments and whether corporations act as free-riders. Using a sample of 1688 firm-year observations from 2008 to 2019 in the Chinese context, we observe th... ver más
Revista: Sustainability    Formato: Electrónico

 
en línea
Manduleli Alfred Mquqwana and Senthil Krishnamurthy    
In power systems, capacitor banks play a significant role in improving voltage profiles, reducing losses, and adjusting power factors. Security measures must be implemented quickly and reliably to protect them from a wide range of threats. As a consequen... ver más
Revista: Energies    Formato: Electrónico

 
en línea
Amr Abozeid,AbdAllah Adel AlHabshy,Kamal ElDahshan     Pág. pp. 148 - 165
Security attacks become daily news due to an exposure of a security threat in a widely used software. Taking software security into consideration during the analysis, design, and implementation phases is a must. A software application should be protected... ver más

 
en línea
Noor Hussain, Yousef Khayat, Saeed Golestan, Mashood Nasir, Juan C. Vasquez, Josep M. Guerrero and Kimmo Kauhaniemi    
A significant challenge for designing a coordinated and effective protection architecture of a microgrid (MG) is the aim of an efficient, reliable, and fast protection scheme for both the grid-connected and islanded modes of operation. To this end, bidir... ver más
Revista: Applied Sciences    Formato: Electrónico

 
en línea
Vjekoslav Budimir, Eberhard Gröner     Pág. 43 - 46
Whether digital or real - mobility is a basic human need of everyday life in all segments. Therefore, the importance of roads and railways continues to gain in importance even in the age of digital highways. Many traffic routes have a century-old traditi... ver más
Revista: Journal of Road and Traffic Engineering    Formato: Electrónico

 
en línea
Zofia Wróbel and Adam St. Jagiello    
Incorrect adjustment of railway traffic control devices (rtc) to the specificity of the area in terms of lightning density may result in their damage by lightning-caused electromagnetic pulses. An associated risk assessment, as the standard in the analys... ver más
Revista: Energies    Formato: Electrónico

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