Results 171 to 180 of about 2,383,589 (201)
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Harmonic and Negative-Sequence Current Control in an Islanded Multi-Bus MV Microgrid
IEEE Transactions on Smart Grid, 2014This paper presents a multifunctional control strategy for the autonomous operation of a multi-bus medium voltage (MV) microgrid under nonlinear and unbalanced load conditions. The main objective is to effectively compensate the harmonic currents of nonlinear loads using electronically-coupled distributed generation (DG) units.
Mohsen Hamzeh +2 more
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Negative-Sequence Current Injection for Fast Islanding Detection of a Distributed Resource Unit
IEEE Transactions on Power Electronics, 2008This paper presents an active islanding detection method for a distributed resource (DR) unit which is coupled to a utility grid through a three-phase voltage-sourced converter (VSC). The method is based on injecting a negative-sequence current through the VSC controller and detecting and quantifying the corresponding negative-sequence voltage at the ...
Houshang Karimi +2 more
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Directional Relaying During Single-Pole Tripping Using Phase Change in Negative-Sequence Current
IEEE Transactions on Power Delivery, 2013Single-pole tripping (SPT) operation imposes problem to many power network relaying schemes. In this paper the directional relaying issue for faults during SPT condition is addressed. Algorithms applying negative sequence components of fault voltage and current for directional relaying find limitation during SPT as the prefault signals also contain ...
Premalata Jena, Ashok Kumar Pradhan
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IEEE Transactions on Power Delivery, 2010
This paper presents a control scheme of cascaded H-bridge STATCOM in three-phase power systems. Cascaded H-bridge STATCOM has merits in point of switching losses, output harmonics, and the number of circuit components. But every H-bridge cell has isolated dc capacitors. So the balancing problem of capacitor voltages exists.
Nobuhiko Hatano, Toshifumi Ise
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This paper presents a control scheme of cascaded H-bridge STATCOM in three-phase power systems. Cascaded H-bridge STATCOM has merits in point of switching losses, output harmonics, and the number of circuit components. But every H-bridge cell has isolated dc capacitors. So the balancing problem of capacitor voltages exists.
Nobuhiko Hatano, Toshifumi Ise
openaire +1 more source
Static negative-phase-sequence current compensator for railway power supply system
International Conference on Electric Railways in a United Europe, 1995This paper describes a newly developed static negative-phase sequence current (NPSC) compensator which is applied to rotary frequency converters (50/60 Hz) feeding 60 Hz electric power to the Tokaido Sinkansen in the 50 Hz power system area of Japan. The basic principle of compensation of a NPSC is generating another NPSC in the opposite phase of the ...
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Change in Negative Sequence Current-Based Islanding Event Detection
2022Shubham Kumar +2 more
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Cancer epigenetics in clinical practice
Ca-A Cancer Journal for Clinicians, 2023Veronica Davalos, Manel Esteller
exaly
Application of Equivalent Negative Sequence Current Calculations in Transmission Planning Studies
SoutheastCon 2023, 2023Jake E. Walker, Reynaldo Ramos
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A Novel Negative Sequence Current Control System for Electrified Railway
2021Shenao Xu, Qintian Zhang, Zhiwei Xu
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Hierarchical Nanomaterials Assembled from Peptoids and Other Sequence-Defined Synthetic Polymers
Chemical Reviews, 2021Zhiliang Li, Bin Cai, Wenchao Yang
exaly