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Power Quality Improvement in Traction Power Supply Networks
2013AC railway traction loads are usually huge single phase loads. As a result, a significant amount of Negative Sequence Current (NSC) is injected into utility grid. Moreover, harmonics and consumption of reactive power are further power quality problems that the supply network is encountering.
Ghassemi, A. +2 more
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A power quality improved bridgeless converter based computer power supply
2014 6th IEEE Power India International Conference (PIICON), 2014Poor power quality, slow dynamic response, high device stress, harmonic rich, periodically dense, peaky, distorted input current are the major problems that are frequently encountered in conventional switched mode power supplies (SMPSs) used in computers.
Shikha Singh +3 more
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A reconfigurable uninterruptible power supply system for multiple power quality applications
Twentieth Annual IEEE Applied Power Electronics Conference and Exposition, 2005. APEC 2005., 2005A novel topology of a modular per-phase uninterruptible power supply (UPS) system based on reduced-switch-count configuration is proposed in this paper. The proposed power conversion methodology offers active front-end filtering capability which ensures unity input power factor (reactive power compensation) and low input total harmonic distortion ...
Chia-Chou Yeh, Madhav D. Manjrekar
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Research on Power Quality Control for Railway Traction Power Supply System
2009 Pacific-Asia Conference on Circuits, Communications and Systems, 2009In this paper, the main methods of reactive power compensation and harmonic suppression and negative balance for electrified railway were analyzed and compared in detailed. And the problems existing power quality control are pointed out. According to the characteristics of electrified railway and aiming at these problems, Improved projects were put ...
Xiangzheng Xu, Baichao Chen
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Power Quality Survey of Industrial Large-power DC Supply System
IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society, 2019In this paper, a power quality (PQ) survey of the large-power electrolytic manganese factory is presented to provide the background introduction of PQ issues. The electrolytic manganese factory consists of 10 rectifier units, which has the electric environment of large current/low voltage. The monitoring object is a 15 MVA rectifier unit.
Qianyi Liu +4 more
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SMES for power quality improvement and uninterruptible power supply
2000Gavrilovic, Momcilo M. (Supervisor)
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THE EFFECTS OF REMOTE CONTROL ON QUALITY OF POWER SUPPLY TO THE CUSTOMERS
2001The effects of applying remote control and operation systems to substations HV and MV on the voltage level of thirtyfive kV to the quality of consumers power supply are discussed and described in the paper. Based on real reliability indices, derived from distribution network Elektroslavonija data, the time durations of outages and the quantity of ...
Pečvarac, Damir, Papandopulo, Boris
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