Results 241 to 250 of about 1,138,456 (310)

Liver transplantation for decompensated cirrhosis of uncertain etiology in a woman with long-standing untreated panhypopituitarism: a case report. [PDF]

Front Endocrinol (Lausanne)
Wang L, Ye X, Luo W, Zhang W, Qian L, Huang J.   +5 more
europepmc   +1 more source

Uni-port video-assisted thoracoscopic surgery for pulmonary arteriovenous malformation based on vascular pre-occlusion: a case report and literature review. [PDF]

Front Med (Lausanne)
Yang Y, Mei J, Li J, Cheng X, Jing M, Shi H, Wang Y.   +6 more
europepmc   +1 more source

Pneumonitis Associated with Immune Checkpoint Inhibitors and Targeted Anticancer Therapies: A Retrospective Case Series of 12 Patients. [PDF]

Diseases
Toma CL, Oprea ȘF, Dumitrache-Rujinski Ș, Belaconi IN, Jipa-Dună D, Cojocaru C, Cristea AM, Diaconu CC, Zaharia DC.   +8 more
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CT saturation correction based on the estimated CT saturation time constant

IET 9th International Conference on Developments in Power Systems Protection (DPSP 2008), 2008
A new method for CT saturation correction is presented that is based on an on-line estimation of the CT magnetizing inductance. The approach adopted is based on numerical solution of the differential equation, which describes the saturated current transformer.
W. Rebizant, A. Wiszniewski, L. Schiel
openaire   +1 more source

Generator Protection and CT-Saturation Problems and Solutions

IEEE Transactions on Industry Applications, 2005
This paper presents a new generator relay design, stator differential function in particular, coping with extreme cases of current transformer (CT) saturation: both AC saturation under large currents and/or residual flux; and DC saturation under low currents but large and long lasting DC components.
B. Kasztenny, D. Finney
openaire   +1 more source

A CT saturation detection algorithm

IEEE Transactions on Power Delivery, 2004
This paper proposes an algorithm for detecting current transformer (CT) saturation by analyzing a secondary current. The current has points of inflection where saturation begins and ends. Then, discontinuity in the first difference of the current arises at the next instants of points of inflection, where the second and third differences of the current ...
Y.C. Kang, S.H. Ok, S.H. Kang
openaire   +1 more source

Performance evaluation of distance relay with CT saturation

Applied Soft Computing, 2011
The decision of digital distance relay is very important for making the protection scheme in the transmission system more reliable. As the current signal is taken from the output of the current transformer, the distortion introduced by the saturation in it affects the performance of the distance relay.
Soumya R. Mohanty, V. Ravikumar Pandi, Bijaya K. Panigrahi, Nand Kishor, Prakash K. Ray   +4 more
openaire   +2 more sources

CT Saturation Detection and Compensation Algorithm

2020
This division presents a new Current Transformer (CT) saturation detection and compensation algorithm. The proposed algorithm depends on a saturation detection index (Dn) which is derived using derivatives of current signals and Newton’s backward difference formulas.
Dharmesh Patel, Nilesh Chothani
openaire   +1 more source

CT saturation tolerance for 87L applications

2015 68th Annual Conference for Protective Relay Engineers, 2015
This paper is exploring requirements for the line current differential function (87L) with regards to the tolerance to current transformer (CT) saturation. Typically, requirements provided by the manufacturers or standards are to eliminate CT saturation completely by proper sizing of CTs, which is not always practical.
Zhihan Xu, Matt Proctor, Ilia Voloh, Mike Lara   +3 more
openaire   +1 more source