Results 31 to 40 of about 325,840 (312)

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

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

Reducing voltage fluctuations using DSTATCOMs and reactive power of PV inverters in a medium voltage distribution system

The Journal of Engineering, 2019
This paper proposes local reactive power control to mitigate the voltage fluctuation in medium-voltage systems using DSTATCOMs and photovoltaic (PV) inverters.
Duong Quoc Hung, Yateendra Mishra, Geoffrey Walker   +2 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

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  

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

Improved Isothermal Relaxation Current Measurement Based on Isolated Circuit for Nondestructive Evaluation of High-Voltage Cable Insulation

, 2023
The Isothermal Relaxation Current (IRC) method, as a non-destructive condition evaluation method based on insulation dielectric response, has been applied in the maintenance of power cables.
Huangjing Gu, Xiaodi Wang, Xinyang Zhu, Bin Shen, Ziqi Liu, Yunjie Zhou, Yongkang Zhang, Yalin Wang   +7 more
core   +1 more source

European Standard Clinical Practice Guideline and EXPeRT Recommendations for the Diagnosis and Management of Gastroenteropancreatic Neuroendocrine Neoplasms in Children and Adolescents

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen, Calogero Virgone, Antje Redlich, Michael Abele, Ricardo Lopez‐Almaraz, Tal Ben‐Ami, Ewa Bien, Gianni Bisogno, Maja Mazic Cesen, Andrea Ferrari, Malgorzata A. Krawczyk, Yves Reguerre, Dominik T. Schneider, Ines B. Brecht, Charlotte Rigaud, Bilgehan Yalcin, Rainer Claus, Christian Vokuhl, Constantin Lapa, Jörg Fuchs, Segolene Hescot, Thomas Walter, Julien Hadoux, Daniel Orbach   +23 more
wiley   +1 more source

Diagnostics on the Basis of the Frequency-Temperature Dependences of the Loss Angle Tangent of Heavily Moistured Oil-Impregnated Pressboard

Energies, 2022
The aim of this study was to perform precision measurements of the frequency-temperature dependences of the loss angle tangent of the liquid-solid composite with the FDS Dirana meter.
Tomasz N. Kołtunowicz, Konrad Kierczynski, Pawel Okal, Aleksy Patryn, Miroslav Gutten   +4 more
doaj   +1 more source

Health‐Related Quality of Life and Symptom Severity Among Patients With PIK3CA‐Related Overgrowth Spectrum: A Mixed‐Methods Study to Understand Real‐World Experience With Alpelisib Treatment

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background PIK3CA‐related overgrowth spectrum (PROS) includes several rare overgrowth disorders resulting from somatic gain‐of‐function mutations in PIK3CA. Despite treatment advances, including the recent approval of alpelisib for PROS in the United States, literature detailing the patient experience with PROS is limited.
Vamsi Bollu, Kaitlin LaGasse, Cory D. Saucier, Kimberly Raymond, Miranda Lauher‐Charest, Lauren Crowder, Beilei Cai, Mary Lisha Paul, Denise Adams   +8 more
wiley   +1 more source