Results 31 to 40 of about 3,331,678 (298)

Statistical Behavior of PMU Measurement Errors: An Experimental Characterization

IEEE Open Journal of Instrumentation and Measurement, 2022
Different power system applications based on synchrophasors measured in different nodes of the electric grid require information about the statistical distribution of the errors introduced by the phasor measurement units (PMUs).
Paolo Castello, Carlo Muscas, Paolo Attilio Pegoraro   +2 more
doaj   +1 more source

Calibration of MV voltage instrument transformer in a wide frequency range

, 2017
: A set-up for the measurement of the frequency response of voltage measurement transformers under actual waveform conditions is presented. It is based on a two steps procedure that makes use of high voltage gas insulated capacitors and a digital bridge.
D. Gallo, LANDI, Carmine, M. Luiso, G. Crotti, M. Modarres, Luiso, M., Modarres, M., Landi, C., C. Landi, Crotti, G., GALLO, Daniele, LUISO, Mario, D. Giordano, Gallo, D., Giordano, D.   +14 more
core   +1 more source

Optimal choice of the number of even harmonics demodulated from the excitation current of a sensor for precise dc voltage component detection in low voltage distributive grid as a strategy for suppression of the systematic error due to the grid voltage fluctuation [PDF]

Zbornik Radova: Elektrotehnički Institut "Nikola Tesla", 2018
This paper addresses the problem of suppression of a systematic measurement error during the detection of a parasitic DC voltage component, superimposed to an AC voltage. As a sensor the toroidal transformer is employed.
Petrović Nenad, Pjevalica Nebojša, Janda Žarko   +2 more
doaj  

Ovarian Sex Cord Stromal Tumors in Children and Adolescents—The European Standard Clinical Practice Recommendations

Pediatric Blood &Cancer, EarlyView.
ABSTRACT As part of the European Cooperative Study Group for Paediatric Rare Tumours initiative, we developed standard clinical practice guidelines for ovarian sex cord stromal tumors, based on comprehensive national and international cohort analyses, literature review, and a final expert consensus conference.
Dominik T. Schneider, Kris‐Ann Schultz, Nora Schnitzler, Michael Abele, Tal Ben‐Ami, Ewa Bien, Gianni Bisogno, Ines B. Brecht, Maja Cesen, Andrea Ferrari, Michaela Kuhlen, Malgorzata A. Krawczyk, Ricardo Lopez‐Almaraz, Yves Reguerre, Calogero Virgone, Daniel Orbach   +15 more
wiley   +1 more source

Study on the ratio change measurement of 1000 kV HVDC divider based on improved DC voltage summation method

High Voltage, 2019
Determining the voltage ratio change is one of the core issues in the traceability of the DC voltage divider. Basing on the previous research results, this study proposes an improved DC voltage summation method to evaluate the voltage division ratio ...
Dengyun Li, Kaipei Liu, Min Lei, Feng Zhou, Changxi Yue, Jicheng Yu   +5 more
doaj   +1 more source

Research on the Influence of Moisture Exchange between Oil and Cellulose on the Electrical Parameters of the Insulating Oil in Power Transformers

Energies, 2022
The article presents an oil moistening method, identical to the oil moistening in power transformers. Moistening took place through the migration of moisture from the moistened pressboard to the brand new oil.
Konrad Kierczynski, Przemyslaw Rogalski, Vitalii Bondariev, Pawel Okal, Daniel Korenciak   +4 more
doaj   +1 more source

Bridging the Loneliness Gap: Depression, Connectivity, and Isolation in Pediatric Oncology Patients and Their Peers

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Loneliness is associated with adverse physical and mental health outcomes and remains understudied in children and adolescents undergoing cancer therapy. Pediatric oncology patients may be at increased risk due to medical isolation and disruption of social networks.
Charlotte N. Stahlfeld, Scott H. Maurer, Michelle D. Watkinson, John Nury, Elise Barberis, Molly C. Mack   +5 more
wiley   +1 more source

Early Body Mass Index z‐Score Change and Resolution of Severe Malnutrition in Children With Sickle Cell Anemia in a Low‐Income Setting: A Prospective Single‐Arm Extension Study

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Children with sickle cell anemia (SCA) in low‐income settings are at risk of severe malnutrition, but optimal nutritional management has not been established. We evaluated an intensified ready‐to‐use therapeutic food (RUTF) regimen in children with persistent severe malnutrition after initial treatment and assessed whether early ...
Safiya Gambo, Shehu Umar Abdullahi, Hassan Adam Murtala, Halima Kabir, Khadija A. Shamsu, Sari A. Acra, Virginia A. Stallings, Mark Rodeghier, Michael R. DeBaun, Lauren J. Klein   +9 more
wiley   +1 more source

The Roadmap of 2D Materials and Devices Toward Chips

Nano-Micro Letters
Highlights This review introduces the potential of 2D electronics for post-Moore era and discusses their current progress in digital circuits, analog circuits, heterogeneous integration, sensing circuits, artificial intelligence chips, and quantum chips ...
Anhan Liu, Xiaowei Zhang, Ziyu Liu, Yuning Li, Xueyang Peng, Xin Li, Yue Qin, Chen Hu, Yanqing Qiu, Han Jiang, Yang Wang, Yifan Li, Jun Tang, Jun Liu, Hao Guo, Tao Deng, Songang Peng, He Tian, Tian-Ling Ren   +18 more
doaj   +1 more source

The Design of a Low Cost Phasor Measurement Unit

Energies, 2019
The widespread diffusion of Phasor Measurement Units (PMUs) is a becoming a need for the development of the “smartness” of power systems. However, PMU with accuracy compliant to the standard Institute of Electrical and Electronics Engineers ...
Antonio Delle Femine, Daniele Gallo, Carmine Landi, Mario Luiso   +3 more
doaj   +1 more source