Results 21 to 30 of about 494,648 (339)

Short-Circuit Fault Analysis of the Sen Transformer Using Phase Coordinate Model

open access: yesEnergies, 2021
The Sen Transformer (ST) provides an economical solution for power flow control and voltage regulation. However, fault analysis and evaluation of the performance of the transmission protection system in the presence of a ST have not been investigated ...
Liang Bu, Song Han, Jinling Feng
doaj   +1 more source

Characteristics of Short-Circuit Current in Distribution Network with Doubly-Fed Wind Power System

open access: yesShanghai Jiaotong Daxue xuebao, 2023
The doubly-fed induction generator (DFIG) is connected to the distribution network as a distributed power source, which turns a radial single power supply system into a dual power supply system and changes the topology of the distribution network. When a
XI Xinze, XING Chao, QIN Risheng, HE Tingyi, HE Peng, MENG Xian, CHENG Chunhui
doaj   +1 more source

Feasibility analysis of neutral grounding by small reactor of HVDC converter transformer

open access: yesEnergy Reports, 2022
Nowadays, the scale of power grid is remarkably increasing and there is a continuous reinforcement of AC–DC hybrid systems. Thus, the single-phase grounding fault currents on the AC grid-side of rectifier and inverter stations increase significantly ...
Ensheng Zhao   +5 more
doaj   +1 more source

Influence Mechanism and Suppression Control of the MMC on Short-Circuit Current Under AC Faults

open access: yesIEEE Access, 2020
Modular multilevel converter based high voltage direct current (MMC-HVDC) transmission systems may increase the short-circuit current and affect the AC fault clearing of circuit breakers.
Jian Yang   +3 more
doaj   +1 more source

Performance Analysis of Single Phase Short Circuit of Three Phase Induction Motor Based on the Method of Field and Circuit

open access: yesJournal of Harbin University of Science and Technology, 2017
According to the short circuit fault occurs in single-phase winding of three-phase induction motor, based on the basic theory of electrical machinery,adopting the research method of combining field and circuit, taking an 11 kW cage type three-phase ...
MENG Da-wei, GAO Xiang
doaj   +1 more source

A novel fault location method for a cross-bonded hv cable system based on sheath current monitoring [PDF]

open access: yes, 2018
In order to improve the practice in the operation and maintenance of high voltage (HV) cables, this paper proposes a fault location method based on the monitoring of cable sheath currents for use in cross-bonded HV cable systems.
Huang, Xiaojun   +6 more
core   +1 more source

IPM synchronous machine drive response to symmetrical and asymmetrical short circuit faults [PDF]

open access: yes, 2003
Copyright © 2003 IEEEA closed-form solution is presented for the steady-state response of interior permanent magnet (IPM) synchronous machines to symmetrical short circuits including the effects of q-axis magnetic saturation.
Jahns, T.   +3 more
core   +1 more source

Parameter estimation of electric power transformers using Coyote Optimization Algorithm with experimental verification [PDF]

open access: yes, 2020
In this work, the Coyote Optimization Algorithm (COA) is implemented for estimating the parameters of single and three-phase power transformers. The estimation process is employed on the basis of the manufacturer's operation reports.
Abaza, Amlak   +4 more
core   +1 more source

Comparative performance study of alternate fault-tolerant inverter configurations for direct torque control-based three-phase PM BLAC drives under single-phase open-circuit fault [PDF]

open access: yes, 2016
This paper presents a comparative performance study of three typical fault-tolerant control (FTC) topologies [split-capacitor (SC), extra-leg split-capacitor (ELSC), and extra-leg extraswitch (ELES)] for direct torque control (DTC)-based threephase ...
Hoang, K., Zhu, Z.Q.
core   +1 more source

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