Results 11 to 20 of about 763 (183)

Study on the Fast Transient Process of Primary Equipment Operation in UHV Fixed Series Capacitors Based on PEEC Method [PDF]

open access: yesSensors
This manuscript proposes a fast transient simulation method based on PEEC to model overvoltage caused by spark gap and disconnecting switch operations in UHV series compensation (FSC).
Baojiang Tian   +7 more
doaj   +2 more sources

Measurement of Transient Overvoltages by Capacitive Electric Field Sensors. [PDF]

open access: yesSensors (Basel)
The accurate measurement and the investigation of electromagnetic transients are becoming more important, especially with the increasing integration of renewable energy sources into the power grid. These sources introduce new transient phenomena due to the extensive use of power electronics.
Probst FL, Beltle M, Tenbohlen S.
europepmc   +6 more sources

Transformation of Transient Overvoltages by Inductive Voltage Transformers [PDF]

open access: yesSensors, 2021
Overvoltage transients occur after any type of switching activity in a power network, such as breaker operation, fault occurrence/clearance and rapid load change. This distortion of voltage is transformed to the secondary circuit of a voltage transformer. The maximum values of such impulses may many times exceed the rated value of its secondary voltage.
Michał Kaczmarek, Dariusz Brodecki
openaire   +3 more sources

Simulation and Experimental Research on Overvoltage Measurement of Hybrid CVT [PDF]

open access: yesE3S Web of Conferences, 2021
The CVT equipment running on site is slightly modified to form a hybrid CVT to achieve transient overvoltage measurement, which is theoretically feasible and practical.
Nie Yu   +3 more
doaj   +1 more source

Empowering and conquering infirmity of visually impaired using AI‐technology equipped with object detection and real‐time voice feedback system in healthcare application

open access: yesCAAI Transactions on Intelligence Technology, EarlyView., 2023
Abstract The Internet of Things is emerging as a crucial technology in aiding humans and making their lives easier. Among the human population, a large percentage of people suffer from disabilities resulting in challenges in everyday life particularly people with visual disabilities.
Hania Tarik   +8 more
wiley   +1 more source

A New Quantitative Analysis Method for Overvoltage in Sending End Electric Power System With UHVDC

open access: yesIEEE Access, 2020
With the development of renewable electric power generation and ultra-high voltage direct current (UHVDC) transmission, the transient overvoltage in the sending end electric power system with UHVDC occurs, but it is lack of quantitative transient voltage
Ancheng Xue   +8 more
doaj   +1 more source

An improved decision tree‐based method for evaluating transient overvoltage caused by commutation failure in LCC‐HVDC systems

open access: yesIET Generation, Transmission & Distribution, 2023
The commutation failure is the most prevalent fault in line‐commutated converter based high‐voltage direct current systems, which may result in transient overvoltage on the sending‐side system.
Zhe Zhang   +4 more
doaj   +1 more source

Research on Resonance Overvoltage of EHV Transmission Lines Caused by Lightning Strike

open access: yesIEEE Access, 2021
This paper studies the mechanism and influencing factors of resonance overvoltage of EHV transmission lines caused by lightning. By analyzing the time domain steady state of the simplified resonance circuit, the physical mechanism of resonance is ...
Xiao Lei   +5 more
doaj   +1 more source

A compact two-electrode field-emission X-ray source for soft X-ray spectroscopy applications. [PDF]

open access: yesJ Synchrotron Radiat
Here, a compact two‐electrode field‐emission X‐ray source employing a tungsten blade cathode was developed to deliver stable low‐background output optimized for soft X‐ray spectroscopy. The device's capability for high signal‐to‐noise element‐specific analysis was demonstrated through successful TiO2 emission spectroscopy at the SXFEL facility ...
Li J, Wang Y, Yu P, Meng J, Weng T.
europepmc   +2 more sources

Research on Transient AC Overvoltage Suppression Strategy of Islanded Wind Power Transmission via VSC-HVDC

open access: yes发电技术, 2022
Voltage source converter based high voltage direct current (VSC-HVDC) has a broad application prospect in the field of islanded renewable energy transmission, due to its advantages such as no commutation failure. When AC fault occurs in the AC power grid
YU Xiao, BU Guangquan, WANG Shanshan
doaj   +1 more source

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