Simulation of the Magnetic Field Distribution and Voltage Error Characteristics of the Three-Phase Three-Component Combined Transformer With New Three-Cylinder Core Structure

Liu, Gang; Li, Cong; Xiong, Xiaofu; Hao, Jian; Liu, Kun; Zou, Runhao; Liao, Ruijin

doi:10.1109/tmag.2019.2945528

Cited by 8 publications

(1 citation statement)

References 7 publications

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“…Current transformer (CT) is a kind of current conversion device, providing current data for metering, measurement, monitoring, etc. [1]. Nowadays, the new power systems characterizes the primary current with wide ranges [2], resulting in the inability of the traditional CT to carry out accurate transformation of the primary current, which seriously affects the accuracy of current measurement [3].…”

Section: Introductionmentioning

confidence: 99%

Research on the measurement performance of wide-range current transformer based on zero-flux principle

Chen,

2024

Eighth International Conference on Energy System, Electricity, and Power (ESEP 2023)

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Due to nonlinear magnetization characteristics of the iron core, the traditional electromagnetic current transformer has a large error in measurement of wide-range current. To optimize the wide-range characteristics of current transformer, this article proposes a wide-range current transformer structure based on the zero-flux principle. Composite iron core is used as the main iron core and passively compensates the current transformer so that the main iron core operates in an approximate zero-flux state, which reduces transmission error of the current transformer and broadens the range of current transformer. By analyzing the error transfer function and using Ansys finite element simulation software, it is proved that the current transformer has high measurement accuracy and good wide-range characteristics, meeting the accuracy requirements of 0.1s-level current transformer under a wide range of working conditions (0.1%IN~200%IN).

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Section: Introductionmentioning

confidence: 99%