Distributed Partial Discharge Detection in a Power Transformer Based on Phase-Shifted FBG

Guo, Ma; Zhou, Hongyang; Shi, Chengbin; Li, Yabo; Zhang, Qiang; Li, Chengrong; Zheng, Qi

doi:10.1109/jsen.2018.2803056

Cited by 85 publications

(42 citation statements)

References 30 publications

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“…Optical fiber needs to be compatible with the oil inside the casing and needs to withstand high temperatures. The flexibility and resistance of fiber optics are among the main advantages comparing to other optical devices, but in order to grant the long term protection and to avoid accidental destruction of the sensor, the use of high temperature resistant polymers has been reported recently for different kinds of optical sensors [16,17]. However, for tests with Epstein frame, where oil is not present, this technology is an optimal alternative compared with resistive strain gauges.…”

Section: Background and Related Workmentioning

confidence: 99%

Magnetostriction Assessment with Strain Gauges and Fiber Bragg Gratings

Linhares¹,

Santo²,

Teixeira³

et al. 2020

EAI Endorsed Transactions on Energy Web

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Power transformers have an imperative role in the future developments of the electrical grids. Treated as crucial assets for transportation and distribution of electrical energy, transformers are currently being studied regarding to the integration of technologies aiming to diagnose problems and monitoring data of electrical power grid. Furthermore, environmental noise pollution has gained importance, especially in active units of the power grid, located near consumers, such as transformers. Transformers noise can be classified according to its source: core, windings and cooling. This study addresses an experimental characterization of one of the main causes of transformers core noise-magnetostriction of electrical steel. An evaluation of magnetostriction properties of electrical steel, including resistive strain gauges and Fiber Bragg Gratings (FBGs) measurements with an Epstein frame, are presented and discussed. The magnetic flux density influence on hysteretic strain behavior of magnetostriction was evaluated, as well as the effect of a clamping load on core joints. Nowadays, optical interrogators for Bragg gratings have a high acquisition frequencies and wavelength sensitivity when compared to former optical interrogation systems, allowing to evaluate physical phenomena without electromagnetic interference and with equivalent resolution of conventional strain gauges.

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Section: Background and Related Workmentioning

confidence: 99%

Magnetostriction Assessment with Strain Gauges and Fiber Bragg Gratings

Linhares¹,

Santo²,

Teixeira³

et al. 2020

EAI Endorsed Transactions on Energy Web

View full text Add to dashboard Cite

show abstract

“…84 Another method to improve the sensitivity is to use a phase shift FBG (PS-FBG). 85,86 Because the PS-FBG exhibits a sharp resonance, the ultrasonic sensitivity is improved compared with the FBG. It has been reported that the sensitivity of PS-FBG-based ultrasonic sensor is 8.46 dB higher than PZT sensor between 50 to 400 kHz.…”

Section: Partial Discharge Monitoringmentioning

confidence: 99%

“…It has been reported that the sensitivity of PS-FBG-based ultrasonic sensor is 8.46 dB higher than PZT sensor between 50 to 400 kHz. 86…”

Section: Partial Discharge Monitoringmentioning

confidence: 99%

Review on fiber-optic sensing in health monitoring of power grids

et al. 2019

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Fiber-optic sensing technology is best adapted to health monitoring and evaluation of power grids because of its immunity of electromagnetic interference, capabilities of multiplexing and distributed sensing, and tolerance to harsh environments. We review key fiber-optic sensing technologies, including fiber Bragg gratings, fiber-optic interferometers, optical time domain reflectometries, and their applications in three main parts of power grids, transformers, power towers, and overhead transmission lines, during the past 20 years. In particular, optical fiber composite overhead ground wire and optical phase conductor applied in power grids are the areas of great potential to go further. The perspectives of an intelligent fault diagnosis subsystem for power grids based on a fiber-optic sensing network are discussed, and related on-going work is described. The review shall be of benefit to both engineers and researchers in power grids and fiber-optic sensing.

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“…Regarding the breakdown discharge detection requirement of large-scale HV equipment, fiber Bragg grating (FBG)-based discharge detection system are proposed [17,18]. However, the multiplexing of multiple FBGs would increase complexity of the detection system.…”

Section: Introductionmentioning

confidence: 99%

3D Printing Technique-Improved Phase-Sensitive OTDR for Breakdown Discharge Detection of Gas-Insulated Switchgear

Chen¹,

Zhang²,

Liu³

et al. 2020

Sensors

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In this paper, we propose and demonstrate a gas-insulated switchgear (GIS) breakdown discharge detection system based on improved phase-sensitive optical time domain reflectometry (φ-OTDR) assisted by 3D-printed sensing elements. The sensing element is manufactured by a material with a high Poisson ratio for enhancement of the sensitivity of φ-OTDR to the acoustic emission detection during the breakdown discharge process. In our experiment, seven 3D-printed sensing elements incorporating with optical fibers are attached tightly onto the shell of the GIS, which are monitored by φ-OTDR to localize and detect the acoustic emission signal resulted from the breakdown discharge. Ultimately, thanks to the phase demodulation, acoustic signals induced by the breakdown discharge process can be captured and recovered. Furthermore, the time delay analysis of detected signals acquired by different sensing elements on the GIS breakdown discharge unit is able to distinguish the location of the insulation failure part in the GIS unit. It suggests that the φ-OTDR incorporated with 3D printing technology shows the advantage of robustness in GIS breakdown discharge monitoring and detection.

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Distributed Partial Discharge Detection in a Power Transformer Based on Phase-Shifted FBG

Cited by 85 publications

References 30 publications

Magnetostriction Assessment with Strain Gauges and Fiber Bragg Gratings

Magnetostriction Assessment with Strain Gauges and Fiber Bragg Gratings

Review on fiber-optic sensing in health monitoring of power grids

3D Printing Technique-Improved Phase-Sensitive OTDR for Breakdown Discharge Detection of Gas-Insulated Switchgear

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