Simulation Investigation on Anti-DC Current Transformer with Double Core

Han, Tong Seok; Jiang, Tingting; Liao, Yaohua; En, Wang; Chen, Jianghong; Yang, Shuai

doi:10.1109/cieec50170.2021.9510822

Cited by 3 publications

(2 citation statements)

References 7 publications

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“…This paper does not expand on other less commonly applied current measurement methods, such as DC comparators, self-oscillating flux gates, giant magnetic impedance, and superconducting current sensors. A comparison of the performances of these sensors is shown in Table V and is not provided in the main body of the paper [164][165][166][167][168][169][170].…”

Section: Discussionmentioning

confidence: 99%

High-Current Sensing Technology for Transparent Power Grids: A Review

Sun,

Huang,

Peng

2024

IEEE Open J. Ind. Electron. Soc.

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The global energy industry is moving towards a trend of green and low-carbon transformation. A transparent power grid represents a new development form under this energy transition trend, integrating the power grid with new generation information and communication technologies, exemplified by the internet. The use of micro smart sensors allows real-time monitoring of many important parameters of power systems via current, which is crucial for ensuring safe, stable, intelligent, and green power grid operation. Here, based on the development logic of current sensing technology for traditional-smarttransparent power grids, we focus our research on high-current sensing in a transparent power grid. First, we review the widely used traditional current sensing methods of shunts and Rogowski coils. More advanced optical fiber current sensing methods and microelectromechanical system current sensing chips are then introduced, which are more suitable for the smart sensing requirements of transparent power grids. In addition, we present and discuss the technical characteristics, research status, application scope, advantages and disadvantages, and future development directions of the above methods in detail. Finally, we address many essential challenges including miniaturization, integration, low power consumption, passive wireless sensing, long-range operation, and complex environmental parameters in the comprehensive intelligent and transparent sensing of current parameters in power grids. To address these challenges, we present three possible development directions: sensor improvement, development of communication and networking technologies for sensors, and advancement of intelligent and fast processing methods through communication.

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Section: Discussionmentioning

confidence: 99%

High-Current Sensing Technology for Transparent Power Grids: A Review

Sun,

Huang,

Peng

2024

IEEE Open J. Ind. Electron. Soc.

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“…These currents, ranging in extreme cases up to hundreds of amperes, seriously affect the energy measurement and create a challenge in maintaining the DC-bias currents [ 2 ] at a certain level recommended by the grid codes [ 3 ]. This creates demand for the mixed AC+DC measurement, such as the DC-bias currents measurement [ 3 ] and AC measurement mixed with DC [ 4 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

A High Accuracy AC+DC Current Transducer for Calibration

Xiao

Song

2022

Sensors

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Facing a lack of high accuracy current standards in the calibration of AC (Alternating Current) + DC (Direct Current) measurement devices that function to measure DC and AC simultaneously, a measurement method with high accuracy is proposed based on zero-flux self-oscillating fluxgate. An iron core and two windings are added onto the single-iron-core double-winding structure of the traditional self-oscillating fluxgate. The added iron core and its upper winding are used to weaken the influence of ripple on the sensor’s accuracy. The other one of the added windings is used for the feedback from the AC+DC magnetic potential, allowing the sensor to work in a zero-flux state and to measure AC+DC simultaneously. An AC+DC transducer prototype with an AC ranging from 0–500 A and DC 0–300 A is developed by selecting the core parameters and an optimized design of the circuit. The test results of the prototype show that the prototype can measure the AC and DC simultaneously, and the measurement accuracy reaches class 0.05 level in the nominal current range. This transducer can be used as a calibration standard of measurement devices for AC only, DC only, or AC and DC simultaneously. Compared with the AC+DC current transducer with the same accuracy level, the proposed transducer has fewer cores and simpler measuring circuit.

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