Nothing Special   »   [go: up one dir, main page]

Li et al., 2009 - Google Patents

The characteristics of electromagnetic current transformers with DC bias

Li et al., 2009

Document ID
9164174080578348838
Author
Li C
Li Q
Yao J
Liu M
Publication year
Publication venue
2009 International Conference on Sustainable Power Generation and Supply

External Links

Snippet

Both geomagnetically induced currents (GIC) and high voltage direct current (HVDC) projects using the earth as its path can cause direct current flowing in the ground. Direct current flux will be produced and has detrimental effects on power systems. Few references …
Continue reading at ieeexplore.ieee.org (other versions)

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection integrated protection
    • H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/33—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers

Similar Documents

Publication Publication Date Title
Cui et al. A sequential phase energization technique for transformer inrush current reduction-Part I: Simulation and experimental results
Guerra et al. Current transformer model
Pan et al. Three-phase transformer inrush current reduction strategy based on prefluxing and controlled switching
Chiesa et al. Five-leg transformer model for GIC studies
Solovev et al. Current transformers: Transfer functions, frequency response, and static measurement error
Gaudreau et al. No-load losses in transformer under overexcitation/inrush-current conditions: tests and a new model
Davarpanah et al. CCVT failure due to improper design of auxiliary voltage transformers
Chowdhury et al. Determining CT requirements for generator and transformer protective relays
Li et al. The characteristics of electromagnetic current transformers with DC bias
Solovev et al. Analysis of modeling of current differential protection
Deshmukh et al. Transformer protection by distinguishing inrush and fault current with harmonic analysis using fuzzy logic
Li et al. Harmonic distortion feature of AC transformers caused by DC bias
CN108107384A (en) 750kV auto-transformers directly hinder remanent magnetism amount computational methods after experiment
Tishuai et al. Influence of system transients on the residual flux of three-phase transformers
Zheng et al. Effects of Geomagnetically Induced Currents on current transformer and differential protection
Wang et al. Analysis on the influencing factors of transformer sympathetic inrush current
Lin et al. Analysis of a sort of unusual mal-operation of transformer differential protection due to removal of external fault
Marketos et al. Effect of DC voltage on AC magnetisation of transformer core steel
Sima et al. The effect of different core materials on transformer inrush currents
Sarwade et al. Use of Rogowski Coil for accurate measurement of secondary current contaminated with CT saturation in distance protection scheme
Sawko Impact of Secondary Burden and X/R ratio on CT Saturation
Guo et al. Modeling of practical protective ct based on lucas model
Crossley et al. Design and evaluation of a circulating current differential relay test system
Yao et al. Harmonics and reactive power of power transformers with DC bias
Dong et al. Simulating analysis of magnetization characteristic curve and exciting current of transformer on DC bias