Generalized Approach for Fault Detection in Medium Voltage Distribution Networks Based on Magnetic Field Measurement

Lekić, Đorđe; Mršić, Predrag; Erceg, Bojan; Zeljković, Čedomir; Kitić, Nemanja; Matić, Petar

doi:10.1109/tpwrd.2019.2935572

Cited by 16 publications

(8 citation statements)

References 17 publications

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“…In accordance with the sensitivity and the measurement range, optical magnetic field measurement approaches can be divided into the detection of a weak biological magnetic field [70], geomagnetism [71], chemicals [72], intelligent information, the device condition in new power system [73] as well as stellar magnetic field [74,75]. Figure 4 depicts the application fields and correlated methods of optical magnetic field measurement approaches under various external magnetic field intensities.…”

Section: Magnetic Field Measurementmentioning

confidence: 99%

Optical magnetic field sensors based on nanodielectrics: From biomedicine to IoT‐based energy internet

Zhang

Meng

Han

et al. 2023

IET Nanodielectrics

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Smart sensors with excellent performance are accelerating the development of biomedicine and the Internet of Energy. Nanodielectrics exhibit unique electrical and mechanical properties. As the predominant materials in optical magnetic field sensor (MFS), they can not only exert the anti‐interference of optical sensing, but improve the measuring characteristics of optical sensors. For instance, the optical fibre quantum probe for the magnetic field can obtain a higher sensitivity of 0.57 nT/Hz1/2, while the measurement range of the sensor that uses Co‐doped ZnO nanorods as cladding is 17–180 mT. Here, these exciting recent achievements in the realm of optical sensing methods for magnetic field detection are reviewed, with a focus on nanodielectrics, which provide an emerging opportunity to achieve higher sensitivity and a wider measurement range of MFS.

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Section: Magnetic Field Measurementmentioning

confidence: 99%

Optical magnetic field sensors based on nanodielectrics: From biomedicine to IoT‐based energy internet

Zhang

Meng

Han

et al. 2023

IET Nanodielectrics

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“…The sag of the conductors s is measured at the midspan, from horizontal line that connects suspension points of the conductors to the lowest height of the conductors. Catenary or chain curve is expressed as [2]:…”

Section: General Model For Magnetic Flux Density Of Overhead Power Linesmentioning

confidence: 99%

“…In contemporary EPS, since introduction of Smart Grid concept, it is common to use non-contact devices which measure magnetic flux density components in the vicinity of power line conductors [1]. These devices are used for monitoring line status during normal operation and acquiring information about abnormal regimes, like faults [2]. Beside their main function, these devices could be used for estimation of other electrical and non-electrical parameters of overhead lines (OHL), like conductor sag [3].…”

Section: Introductionmentioning

confidence: 99%

“…The method is based on processing the signals from Fault Passage Indicators (FPI) which are widely used as devices for contactless fault detection in EPS. Those devices are mounted on suitable support poles or towers underneath overhead power line conductors, and by measuring conductor magnetic flux density they can detect the passage of fault current through power line conductors [2]. Since the information about magnetic flux density components and line current is already available in those devices, their software can be upgraded to monitor conductor sag.…”

Section: Introductionmentioning

confidence: 99%

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Approximate Magnetic Flux Density Model of Overhead Power Lines for Conductor Sag Estimation

Kitić

Matić

2022

IJEEC

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Monitoring and supervision of overhead power lines have become essential actions in Electrical Power Systems since the introduction of the Smart Grid concept. In order to monitor overhead power lines, simple non-invasive devices are mounted on support poles, which detect line abnormalities and faults by measuring magnetic field originating from power line conductors. Measured signals are also used to determine various electrical and non-electrical line parameters. In this paper a new approximate model for magnetic flux density vector components of the overhead power lines suitable for real-time conductor sag estimation is presented. In the proposed model, catenary-shaped power line conductors are approximated with tilted straight line conductors, and the approximate model is calibrated by tuning model coefficients to match flux density vector components as in the case of real catenary-shaped conductors. The accuracy of the proposed model is verified by measurements on three-phase overhead power line model scaled to laboratory conditions. As a conclusion, an adaptive method for possible practical implementation based on the approximate model is considered.

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“…I. INTRODUCTION agnetic field measurement is of great significance in the scientific and industrial fields, such as fault diagnosis in power industry [1] , geomagnetic detection [2] , aviation industry [3] , and biological magnetic measurement [4] . The Sanfeng Gu, Danqi Feng, Yangxu Tang, Zhonghao Li, Xinhao Nan, Tianqi Wang and Ming Deng are with the Key Laboratory of Optoelectronic Technology and Systems (Ministry of Education), Chongqing University, Chongqing 400044, China (e-mail: gusf@cqu.edu.cn; fdq1228@cqu.edu.cn; 15235110996@163.com; 202108021059t@cqu.edu.cn; 202008021005@cqu.edu.cn; 20220801009@stu.cqu.edu.cn; dengming@cqu.edu.cn).…”

mentioning

confidence: 99%

Highly Precise Magnetic Field Measurement Based RF-Assisted Sagnac Interferometer With Tapered Fiber

Feng

Tang

et al. 2023

IEEE Photonics J.

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A radio frequency (RF)-assisted Sagnac interferometer based on a dual-loop optoelectronic oscillator (OEO) is experimentally demonstrated for high-precision magnetic field measurement, in which the tapered fiber covered with the magnetic fluid (MF) as the magnetic field sensing head is embedded in the Sagnac interferometer. The evanescent field of the tapered fiber can interact with the MF under the external magnetic field to cause the birefringence variation of the fundamental mode, leading to the change in the free spectral range (FSR) of the interferometer, which can be mapped to the oscillation frequency shift of the OEO in the microwave domain. By the above converting, the magnetic field measurement with high interrogation speed and resolution can be realized. In addition, the designed device shows a certain measurement directionality of the magnetic field due to two orthogonally polarized fundamental modes asymmetric to the magnetic field, obtaining a good conformity with the constructed theoretical models. The experimental results show the maximum magnetic field sensitivities of 159.4 Hz/mT in the range of 8.48-27.83 mT, and 350.8 Hz/mT in the range of 0-5.14 mT, corresponding to the light wave vector parallel and perpendicular to the magnetic field, respectively.

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Generalized Approach for Fault Detection in Medium Voltage Distribution Networks Based on Magnetic Field Measurement

Cited by 16 publications

References 17 publications

Optical magnetic field sensors based on nanodielectrics: From biomedicine to IoT‐based energy internet

Optical magnetic field sensors based on nanodielectrics: From biomedicine to IoT‐based energy internet

Approximate Magnetic Flux Density Model of Overhead Power Lines for Conductor Sag Estimation

Highly Precise Magnetic Field Measurement Based RF-Assisted Sagnac Interferometer With Tapered Fiber

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