Results 1 to 10 of about 14,880 (154)

Practical calculation of asymmetric short circuit current of DFIG connected to distribution network [PDF]

E3S Web of Conferences, 2020
In view of the existing complex analytic calculations of DFIG short-circuit current are hardly applied in engineering projects, a practical calculation of asymmetric short-circuit current of DFIG is proposed.
Fu Pengwu, Yang Dongwen, He Zhi, Duan Zhenfeng, Wang Dengmei   +4 more
doaj   +2 more sources

An Asymmetric Short-Circuit Fault Ride-Through Strategy Providing Current Limiting and Continuous Voltage Supply for Three-Phase Three-Wire Stand-Alone Inverters

IEEE Access, 2020
The three-phase three-wire stand-alone inverter is required to have short-circuit fault ridethrough ability to achieve continuity of power supply. Generally the inverter works in current-controlled mode in symmetric short-circuit conditions, but voltage ...
Jian He, Peng Liu, Bangyin Liu, Shanxu Duan   +3 more
doaj   +3 more sources

A Novel Fault-Identification Method for Micro Coils of EMECs Based on a Composite Analytical Model Combining a 2D Thermal Model and a 1D-CNN [PDF]

Micromachines
This paper proposes a novel fault-identification method for micro-coils in relays with forcibly guided contacts, a type of electromechanical elementary component (EMEC), combining a composite analytical model, a 2D thermal model, and a 1D-CNN.
Aobo Wang, Jiaxin You, Xu Tan, Yutong Xue, Xinyu Jin   +4 more
doaj   +2 more sources

Characteristics Analysis of Field Winding Inter-Turn Short-Circuit Fault for Large-Capacity Synchronous Condenser Based on Stator Winding Asymmetric Branch Current

IEEE Access, 2023
The early inter-turn short-circuit fault of field winding (ISFF) occurs between adjacent strands in a single rotor slot, which is a significant safety hazard in the transient operation of the large-capacity synchronous condenser.
Weihao Wang, Xu Bian, Hao Huang, Yanping Liang   +3 more
doaj   +3 more sources

Application of an Artificial Neural Network for Detecting, Classifying, and Making Decisions about Asymmetric Short Circuits in a Synchronous Generator

Energies, 2023
Fast and accurate detection of emerging faults in synchronous generators, which have found wide application in power and transport systems, contributes to ensuring reliable operation of the entire system.
Marinka Baghdasaryan, Azatuhi Ulikyan, Arusyak Arakelyan   +2 more
doaj   +3 more sources

Increasing the Sensitivity of the Digital Relay Protection Against Turn-to-turn Short Circuits And Asymmetries In Wind Power Generators [PDF]

E3S Web of Conferences, 2020
The paper describes the implementation of neural networks for increasing the sensitivity of the digital relay protection against turn-to turn short circuits in the stator winding and asymmetric modes in wind power generators.
Nedelchev Nedelcho, Matsankov Misho
doaj   +1 more source

Calculation of Last Current Loop Parameters and TRV Parameters in T100a Breaking Test of High Voltage Circuit-breakers

Journal of Harbin University of Science and Technology, 2023
Asymmetric short-circuit fault breaking test T100a is an important test item of High-voltage AC Circuit-breakers. In non-effectively earthed neutral system the first pole to clear factor is 1.5 and the transient recovery voltage (TRV) has two or four ...
HE Ninghui, WAN Hua, XUE Fei, WU Hui, ZHANG Pei, MA Kui   +5 more
doaj   +1 more source

Overvoltage in the free phase of the stator winding in case of asymmetric short circuit implicit pole synchronous generator biaxial excitation [PDF]

E3S Web of Conferences, 2019
Reviewed and analyzed issues associated with overvoltage in the free phase winding of the stator with asymmetric short-circuit implicitly pole synchronous generator biaxial excitation, and compared the results of experimental measurements of the phase ...
Pirmatov Nurali, Toshev Sherzod
doaj   +1 more source

Small-Signal Stability Analysis of Three-Phase Four-Wire System Integrated With Single-Phase PV Inverters Considering Phase to Phase Coupling Effect Under Asymmetric Grid

IEEE Access, 2023
With the rapid growth of renewable energy sources, single-phase rooftop photovoltaic inverters connected to the distribution network have received widespread applications in recent years.
Yuming Liao, Heng Nian, Yaoxin Wang, Dan Sun   +3 more
doaj   +1 more source

Equations of a Synchronous Machine in Phase Coordinates for Asymmetrical Short Circuits and their Solutions

International Journal of Advanced Engineering Research and Science, 2023
A methodology is proposed for studying, using digital technology, asymmetrical transient modes of a synchronous generator operating on infinite power systems. The initial equations of a synchronous machine and sequential transformations for their solution are presented.
Huseyngulu Guliyev, Famil Ibrahimov
openaire   +1 more source