Results 1 to 10 of about 5,987 (167)

Impedance-Based Short Circuit—Short Circuit Fault Location Method in Coaxial Cables

open access: yesIEEE Access, 2023
The paper presents the results of the assessment and verification of a non-destructive method of fault location in coaxial cables with a local weakening of insulation.
Aneta Bugajska, Tomasz Desaniuk
doaj   +3 more sources

Short-circuit fault-tolerant control for five-phase fault-tolerant permanent magnet motors with trapezoidal back-EMF [PDF]

open access: yesFundamental Research, 2022
When a short-circuit fault occurs in a phase, the faulty phase needs to be removed artificially from the system because of the loss of the capability to generate torque.
Qian Chen   +4 more
doaj   +2 more sources

Analysis and fault-tolerant control of inter-turn short-circuit fault for five-phase permanent-magnet synchronous machine

open access: yesEnergy Reports, 2022
For the demand of high reliability in the aerospace field, multi-phase electric machines have become a research hotspot for the fault-tolerant ability. Inter-turn short-circuit fault is one of the main fault forms in the electric machine.
Zaiping Zheng   +5 more
doaj   +1 more source

Design of high-power intrinsically safe power supply based on fault current change rate

open access: yesGong-kuang zidonghua, 2021
In order to solve the problems of low output power, poor protection effect, and slow dynamic response speed of existing intrinsically safe power supply, a high-power intrinsically safe power supply based on fault current change rate is designed.
KANG Qian   +3 more
doaj   +1 more source

Shafting Torsional Vibration Analysis of 1000 MW Unit under Electrical Short-Circuit Fault

open access: yesApplied Sciences, 2021
Taking a 1000 MW turbine generator as the research object, the short-circuit fault in electrical disturbance is analyzed. Since it is very difficult to carry out fault analysis experiments and research on actual systems, simulation analysis is one of the
Honggang Pan   +4 more
doaj   +1 more source

Analysis on Rotor Vibration Characteristics under Dynamic Rotor Interturn Short Circuit Fault in Synchronous Generators

open access: yesEnergies, 2023
A dynamic rotor interturn short circuit fault may occur during synchronous generator operation. However, there is no method to analyze the generator’s characteristics under the dynamic rotor interturn short circuit fault and identify the fault.
Yuling He   +4 more
doaj   +1 more source

Forces and Stresses in the Windings of a Superconducting Fault Current Limiter

open access: yesEnergies, 2022
This paper presents the design of a Superconducting Fault Current Limiter (SFCL) and calculation results of forces and stresses in the windings of a resistive fault current limiter.
Janusz Kozak
doaj   +1 more source

Distribution fault location using short-circuit fault current profile approach [PDF]

open access: yes2011 IEEE Power and Energy Society General Meeting, 2011
Impedance-based algorithms do not consider load current and non-uniform line impedance per unit, thus introducing errors in fault location estimates. To minimize these errors, this paper proposes a short-circuit fault current profile approach to complement impedance-based algorithms. In this approach, circuit model of the distribution feeder is used to
S. Das   +3 more
openaire   +1 more source

Calculation method of external fault short-circuit current for variable-speed pumped storage units based on time-domain dynamic circuit

open access: yesFrontiers in Energy Research, 2023
The calculation method of the external fault short-circuit current of large units with clear mechanisms and practicality is of great value in engineering practice.
Rufei He   +7 more
doaj   +1 more source

A short circuit current evaluation method based on the branch fault current of the circuit breaker

open access: yesZhejiang dianli, 2023
With the rapid load growth and the increasing density of power grids, the overrun short-circuit current becomes increasingly aggravated. To accurately assess the short-circuit current level of the system is crucial to ensure the safe and stable operation
DONG Wei   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy