Results 251 to 260 of about 1,047,159 (304)

Short Circuit Current Characteristics Analysis and Improved Current Limiting Strategy for Three-phase Three-leg Inverter under Asymmetric Short Circuit Fault

IEEE transactions on power electronics, 2018
Three-phase three-leg inverter is one of the most popular topologies for inverters. When short-circuit fault occurs, the inverter is generally switched to the current-controlled mode from voltage-controlled mode to limit the fault currents.
Z. Liang, Xinchun Lin, Yong Kang, B. Gao, H. Lei   +4 more
semanticscholar   +1 more source

Effects of short-circuit currents

2005
Calculation methods for the thermal and electromagnetic effects of short-circuit currents are dealt with IEC 61660-2, which is applicable to short-circuit currents in d.c. auxiliary installations in power plants and substations and IEC 60865-1, related to three-phase a.c. systems.
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Short-circuit currents and recovery voltages

Electrical Engineering, 1949
FIELD tests were made on a 7,200/12,470Y-volt multigrounded rural distribution system to check fault current calculations and to investigate transient recovery voltages experienced as a consequence of clearing fault currents. Tests were also made using a miniature circuit representation of a rural distribution system in order to investigate the effect ...
W. H. Eason, I. B. Johnson, J. W. Kalb, H. A. Peterson   +3 more
openaire   +1 more source

Calculation of short-circuit currents

2011
The current that flows through an element of a power system is a parameter that can be used to detect faults, given the large increase in current flow when a short-circuit occurs. For this reason, a review of the concepts and procedures for calculating fault currents will be made in this chapter, together with some calculations illustrating the methods
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A Relationship Between Minimum Arcing Interrupting Capability and Opening Velocity of Vacuum Interrupters in Short-Circuit Current Interruption

IEEE Transactions on Power Delivery, 2018
Controlled switching technology operates circuit breakers at the minimum arcing time for short-circuit current interruption. However, there is no report to reveal a relationship between the short-circuit current interrupting capability with the minimum ...
Bojian Zhang, Li Ren, Jian’gang Ding, Jianhua Wang, Zhiyuan Liu, Yingsan Geng, S. Yanabu   +6 more
semanticscholar   +1 more source

Simulation and dSPACE Hardware Implementation of an Improved Fractional Short-Circuit Current MPPT Algorithm for Photovoltaic System

Applied Solar Energy, 2021
C. B. N. Fapi, P. Wira, M. Kamta, Hyacinthe Tchakounté, B. Colicchio   +4 more
semanticscholar   +1 more source

Limitation of short-circuit currents

2005
The expansion of electrical power systems by new power stations and new lines (overhead transmission lines and cable circuits) results in an increase of short-circuit currents due to an increase in sources feeding the short-circuit and due to a reduction of system impedance. The improvement of existing installations and the replacement of equipment are
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The short-circuited fluxgate output current

Journal of Physics E: Scientific Instruments, 1989
The alternative coupling of short-circuiting the secondary coil of a fluxgate sensor by connecting it to the inverting input of a current amplifier is shown to have significant advantages over the more conventional unloaded or second-harmonic tuned voltage coupling.
F Primdahl, J R Petersen, C Olin, K Harbo Andersen   +3 more
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Analysis of Short-Circuit Current Characteristics and Its Distribution of Artificial Grounding Faults on DC Transmission Lines

IEEE Transactions on Power Delivery, 2018
Grounding faults are common faults on dc transmission lines. Characteristics of the short-circuit current, such as amplitude and frequency, and its following distribution are very important for analyzing the influence of the fault.
Caowei Huang, Bo Zhang, Yutang Ma, Fangrong Zhou, Jinliang He   +4 more
semanticscholar   +1 more source

Factors for the calculation of short-circuit currents

2005
Several factors for the calculation of short-circuit (s.-c.) currents have been introduced in previous sections, the origin of which will be explained within this section. · Voltage factor cmax and cmin for different voltage levels as per Table 4.1. · Correction factor using the %/MVA or the p.u.-system as mentioned in Chapter 2. · Impedance correction
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