A polyphase 500 kA current measuring system with Rogowski coils

Pettinga, J.A.J.; Siersema, J.

doi:10.1049/ip-b.1983.0054

Cited by 20 publications

(5 citation statements)

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“…A passive integrating circuit (figure 13) exhibits somewhat better performance at those frequencies. Combinations of various methods of integration (active and passive) can be used for large bandwidth-as proposed in [45].…”

Section: Electronic Circuits Connected To the Coil Sensorsmentioning

confidence: 99%

Induction coil sensors—a review

Tumański¹

2007

Meas. Sci. Technol.

496

271

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This review describes induction coil sensors, which are also known as search coils, pickup coils or magnetic loop sensors. The design methods for coils with air and ferromagnetic cores are compared and summarized. The frequency properties of coil sensors are analysed and various methods for output signal processing are presented. Special kinds of induction sensors, such as Rogowski coil, gradiometer sensors, vibrating coil sensors, tangential field sensors and needle probes are described. The applications of coil sensors as magnetic antennae are also presented.

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Section: Electronic Circuits Connected To the Coil Sensorsmentioning

confidence: 99%

Induction coil sensors—a review

Tumański¹

2007

Meas. Sci. Technol.

496

271

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“…However, this method has a small gain, a high error rate, and an impedance mismatch, which leads to oscillation at the coil resonant frequency [37]. Second, the passive integration method requires access to an RC integrator to measure the coil's induced voltage, which has a cutoff frequency of f0 = (2πR0C0) -1 and is valid only above f0 [38]. Finally, active integrators containing analog operational amplifiers have more stable components and termination parameters.…”

Section: A Measurement Principles and Classificationmentioning

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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“…The first requirement can be ensured by adopting the conventional hybrid integrator shown in Fig. 4(a) [9], from which Fig. 4(b) can be derived to meet the second requirement simultaneously.…”

Section: B Coordinated Design Of Characteristic Shapermentioning

confidence: 99%

Extended Wide-Bandwidth Rogowski Current Sensor With PCB Coil and Electronic Characteristic Shaper

Xin

et al. 2021

IEEE Trans. Power Electron.

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Because of their fast switching speeds, current measurements for wide band-gap (WBG) devices have become increasingly challenging. Particularly, the designed current sensor must be nonintrusive and have a small size and a very wide bandwidth. One promising current sensor is the printed-circuitboard (PCB) Rogowski current sensor, whose bandwidth is wide only if parasitic parameters of its measuring coil are minimized prominently. This is presently achieved by reducing the number of turns of the coil, which undesirably will degrade its signal-to-noise ratio. Alternatively, an electronic characteristic shaper proposed in this letter can be used for neutralizing parasitic effects, while performing integration to restore the measured current. Theoretical analyses and experimental results have shown that the resulting Rogowski current sensor does indeed have a wider bandwidth, even without changing its measuring coil.

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A polyphase 500 kA current measuring system with Rogowski coils

Cited by 20 publications

References 1 publication

Induction coil sensors—a review

Induction coil sensors—a review

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

Extended Wide-Bandwidth Rogowski Current Sensor With PCB Coil and Electronic Characteristic Shaper

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