Results 71 to 80 of about 68,357 (185)

Study on residual-magnetism detection of protection current transformers based on square-wave excitation at a predefined frequency

Zhejiang dianli
Accurate detection of residual magnetism in protection current transformer （CT） cores is essential for effective demagnetization and for preventing protection misoperations caused by CT saturation.
ZHANG Xin, GONG Chengyao, CHEN Yunlong, HU Yin, HUANG Chencheng, ZHENG Taiying   +5 more
doaj   +1 more source

Análisis de las funciones de protección de sobrecorriente, distancia y diferencial en el software EMTP.: análisis de la función de protección de distancia en el software EMTP.

, 2022
Los sistemas de protecciones eléctricas son importantes para la operación del sistema, la vida útil de los equipos y para la seguridad del personal que opera estos sistemas.
Cordones Herrera, Luis Fernando
core  

Localization of partial discharge in the high voltage apparatus

Results in Control and Optimization
Partial discharges (PD) in high-voltage (HV) devices can be used as indicators of insulation deterioration, often preceding catastrophic failures in power systems.
Amir Ghaedi, Mehrdad Mahmoudian, Eduardo M.G. Rodrigues, Rui Melicio   +3 more
doaj   +1 more source

Study on Fault Mechanism of Lightning Flashover Based on EMTP - RV in Wind Farm

Journal of Physics: Conference Series, 2019
The particularity of lightning flashover failure of wind farm is analyzed, and it is pointed out that the formation mechanism of lightning overvoltage in wind farm collector system is different from that of power system distribution network. On this basis, the mechanism of lightning flashover failure of wind farm collector system is analyzed.
Shi Zhang, Bo Zhang, Hui Xia, Tong Sun, Jinchuan Zhai, Xiangqi Kong, Li Cao, Huanjie Huo   +7 more
openaire   +1 more source

Transient Protection of UHV Busbars Based on Standardized VMD-Shannon Entropy

IEEE Access
Transient bus protection exhibits ultra-high-speed action, yet displays low reliability under weak fault conditions. This paper proposes a novel multidimensional fault analysis framework to address this issue.
Zhenwei Guo, Yongyan Jiang, Zebo Huang, Yangsheng Liu   +3 more
doaj   +1 more source

Calculation of Stationary States in the Transmission Poweer Network Using the EMTP-RV Program Package

, 2018
Cilj ovog rada je izraditi modele elemenata 400 kV prijenosne mreže za proračun tokova snaga u EMTP-RV programu. Objašnjeno je teorijsko modeliranje elemenata sustava, testirani su programi PSS®E i EMTP-RV za proračun tokova snaga te je opisan postupak ...
Buljan, Lara
core  

EMTP-RV simulation of a chain link STATCOM [PDF]

, 2007
An advanced static VAr compensator (ASVC), using a voltage-source-converter (VSC), popularly known as a static synchronous compensator (STATCOM), is generally acknowledged as the next-generation reactive power controller in power systems.
Shah, Nikunj Mahesh
core  

RV-C15 infection promotes translocation of tight junction proteins and impairs mucociliary clearance (MCC).

, 2022
A: Percentage of maximum LDH release graph shows the cytotoxicity of RV-C15 infection in HAE from two donors (continuous and dash lines). Mean and standard error of the mean values were obtained across n = 3 cultures/time-point.
Kelsey M. Gray (11567800), Daniel Song (7354925), Jae W. Jung (11919616), Margaret A. Scull (10669059), Maxinne A. Ignacio (11919619), Talita B. Gagliardi (6791720), Monty E. Goldstein (11919613), Kimberly M. Stroka (11919622), Gregg A. Duncan (1935946)   +8 more
core   +1 more source

RV-specific antibody responses.

, 2018
Mice were primed twice with live RV or γ-RV, 2 weeks apart. Serum samples harvested on Day 14 post-2nd priming and analysed for RV-specific IgG using ELISA. (A) Serial dilutions of serum samples and absorbance readings at 450/620 nm for total IgG.
Justin Davies (395077), Shabihah Shahrudin (5349542), Cheng Chen (136164), Carl D. Kirkwood (90160), Shannon C. David (5349548), Eve V. Singleton (5349551), Mohammed Alsharifi (202414), Timothy R. Hirst (2499712), Michael Beard (5349545)   +8 more
core   +1 more source

High-speed and accurate detection of high-impedance arcing faults in renewable energy microgrids using a master-slave ADALINE algorithm

Ain Shams Engineering Journal
High-Impedance Arcing Faults (HIAFs) in electrical microgrids are among the abnormal conditions that are difficult to detect by conventional protective devices due to low current and non-linear behavior. In addition, the behavioral similarity of HIAFs to
Mohsen Jannati, Hamidreza Toodeji
doaj   +1 more source