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A proposed method for reduction of induced zero-sequence current in cable system
International Journal of Power Electronics and Drive Systems (IJPEDS), 2022 <span>Zero-sequence circulating currents are particularly problematic because they can occasionally lead to protective relay failure. However, it is not usually understood that systems with numerous cables strung along the same path will produce zero-sequence currents.
Shimaa Abdel-Raouf Salem +2 more
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Research on dead-time compensation of common DC bus OW-PMSM based on 120°decoupling modulation
Energy Reports, 2022 To suppress the switching dead-band in the Open-End Winding Permanent Magnet Synchronous Machine with Common DC bus (OW-PMSM-CDCB) drive system, the dual-inverter switch dead-band generates zero-sequence voltage and current during 120°decoupling ...
Shirui Xie +5 more
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Energies, 2021 Series-winding topology (SWT) could improve the DC-link voltage utilization, as open-winding topology does. Meanwhile, it can greatly reduce the number of power devices. Firstly, for the half-bridge power modules (HBPMs)-based inverter, an N-phase series-
Zhiping Dong +3 more
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Gong-kuang zidonghua, 2010 The paper explained that traditional leakage protection principles such as zero-sequence direction relay principle and zero-sequence current's maximum principle are unable to implement selective leakage protection in situation of great disparity between ...
SU Po, CHEN Qing
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Energies, 2023 When the overhead line passes through the forest area, the conductor may contact the line to induce the tree-contact single-phase-to-ground fault (TSF), and the persistence of TSF may induce wildfires, bringing serious consequences.
Jianbo He +6 more
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THE INFLUENCE OF ZERO SEQUENCE CURRENTS ON PHASE CURRENT REDUCTION IN ASYMMETRICALLY TAPPED SYSTEMS
SSRN Electronic JournalThis paper addresses the counter-intuitive phenomenon of phase current reduction in a three-phase system with asymmetrical tap changer positions. Specifically, the study examines cases where a transformer's phase B tap is stuck and is unable to switch while phases A and C are at lower taps.
Mehmood, Rana Shaheer, Zhang, Peng
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Zhejiang dianli, 2023 With its connection to distribution networks， the inverter-interfaced distributed generators （IIDGs） affect single-phase grounding detection and jeopardize their safe and stable operation. Based on the characteristics of IIDGs and sequence network theory，
JIANG Miao +3 more
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International Journal of Electrical Power & Energy SystemsThe network-level characteristics of zero-sequence currents during single-phase ground faults in existing low-resistance grounding systems with inverter-interfaced distributed generators (IIDGs) remain unclear. Moreover, the influence of IIDG integration
Jianwen Zhao, Fuyang Zeng
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International Journal of Electrical Power & Energy SystemsIslanded grids play a crucial role in AC/DC distribution systems. The adoption of transformerless voltage-source converters as the primary power source is an important development direction for AC/DC distribution systems.
Yuze Li +4 more
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A protection method for shunt capacitor bank in mine-used reactive power compensation device
Gong-kuang zidonghua, 2017 For high cost, poor sensitivity, complex protection setting calculation existed in current protection methods for shunt capacitor band in mine-used reactive power compensation device, characteristics of capacitor current distribution and fault were ...
HE Ziyuan, YU Qun, CHEN Zhihui
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