Electric discharge detection and localization using a distributed optical fiber vibration sensor

Costa, Igor Brutkowski Vieira da; Weber, Guilherme Heim; Gomes, Danilo Fernandes; Galvão, José Rodolfo; Silva, Marco J. da; Pipa, Daniel Rodrigues; Ozcáriz, Aritz; Zamarreño, Carlos R.; Martelli, Cícero; Silva, Jean Carlos Cardozo da

doi:10.1016/j.yofte.2020.102266

Cited by 19 publications

(8 citation statements)

References 18 publications

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“…These equations account for the drift of the charged species under the electric field, diffusion, ionization (1), attachment (2), and recombination ( 3) and ( 4) reactions. The photon emission rate I(⃗ r), described in (5), is calculated by (14), and the photo-ionization rate S ph (⃗ r), described in (6), is obtained using the three screened Poisson equations ( 15) and ( 16) as described in ( 10), ( 9) and ( 8). Functions µ e , µ p and µ n are respectively the mobility of an electron, a positive ion, and a negative ion, whereas D e , D p and D n are respectively the diffusion coefficient of an electron, a positive ion, and a negative ion.…”

Section: Methodsmentioning

confidence: 99%

“…Another possibility is to use Fiber Bragg Gratings to measure the ultrasonic emission of PDs [12], [13] or distributed optical fiber vibration sensors [14]. Fiber optic based sensors are insensitive to electromagnetic interference and, due to their small size, have fast response time to ultrasonic signals, which are ideal characteristics for measurement of PDs in underground transmission lines.…”

Section: Introductionmentioning

confidence: 99%

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Simulation of Current Pulses and Sound Waves Resulting from Partial Discharges in a Needle-Plane Geometry in Air

Fabris

Silva

2022

J. Microw. Optoelectron. Electromagn. Appl.

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Partial discharges can occur in different types of electric equipment and cause progressive insulation deterioration, so there is interest in monitoring partial discharges for assessing the state of the isolation of an electric system and to predict failures. Techniques to detect partial discharges, such as detecting ultrasonic emission, have been proposed in the literature, but as various effects can co-occur during a discharge, identifying characteristics in sound and pressure waveforms and correlating then with discharge characteristics is difficult. Simulations can assist in these correlations by allowing the isolation of the different phenomena. In this work the drift diffusion model, including photoionization, is coupled with the linearized compressible Navier-Stokes equations to simulate ultrasonic waves produced by partial discharges. Previous works have used the incompressible Navier-Stokes equations, so they can simulate ionic wind produced by the Trichel pulses, but no sound. In the literature, simulations have focused either on streamers or Trichel pulses. In this work both discharges and produced sound waves are successfully simulated for the needle-plane geometry in air. The electric current and charge per pulse are compared with experimental results reported in the literature for the same discharge conditions. The simulations have demonstrated that the sound waves depart from the electrode tip for the Trichel pulses, and for the streamers two sound waves are produced, one from the electrode tip and the other from the whole discharge length. Differences in the wave front with respect to the relative position to the electrode tip were analyzed, showing that near the discharge spot the sound wave is not a spherical wavefront. The sound wave for one of the discharges in the Trichel pulse regime was compared with experimental results in the literature. Results are in good agreement with the experimental data found in the literature. Both current and sound waves were successfully predicted and correlated with the discharge, results that can be used to help in the detection of partial discharges.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Simulation of Current Pulses and Sound Waves Resulting from Partial Discharges in a Needle-Plane Geometry in Air

Fabris

Silva

2022

J. Microw. Optoelectron. Electromagn. Appl.

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“…PDs are typical of high-voltage systems, which occur in inhomogeneous sites in insulation systems; either in gases, liquids, or solids [ 3 ]; at interfaces and at surfaces; or between a conductor and a metal element not connected to the ground or the high-voltage conductor [ 4 ]. PDs are important aging factors in insulation systems [ 5 , 6 , 7 ] because PD long-term effects include degradation of the electrical characteristics of organic insulation systems [ 3 ], thus causing mechanical, thermal, chemical, and structural [ 8 ] changes, as well as environmental aging [ 9 ]. To ensure the health of insulation systems, PD sources must be identified so that corrective actions can be applied before breakdown occurs [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

Application of Image Sensors to Detect and Locate Electrical Discharges: A Review

Ruiz

2022

Sensors

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Today, there are many attempts to introduce the Internet of Things (IoT) in high-voltage systems, where partial discharges are a focus of concern since they degrade the insulation. The idea is to detect such discharges at a very early stage so that corrective actions can be taken before major damage is produced. Electronic image sensors are traditionally based on charge-coupled devices (CCDs) and, next, on complementary metal oxide semiconductor (CMOS) devices. This paper performs a review and analysis of state-of-the-art image sensors for detecting, locating, and quantifying partial discharges in insulation systems and, in particular, corona discharges since it is an area with an important potential for expansion due to the important consequences of discharges and the complexity of their detection. The paper also discusses the recent progress, as well as the research needs and the challenges to be faced, in applying image sensors in this area. Although many of the cited research works focused on high-voltage applications, partial discharges can also occur in medium- and low-voltage applications. Thus, the potential applications that could potentially benefit from the introduction of image sensors to detect electrical discharges include power substations, buried power cables, overhead power lines, and automotive applications, among others.

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“…PDs are generated at inhomogeneous sites of solid, liquid, or gaseous insulation systems [ 4 ]; at surfaces and/or interfaces; or between a conductor and a floating metallic element [ 5 ]. PDs produce premature aging of organic insulation systems [ 6 , 7 , 8 ], as they cause thermal, mechanical, chemical, and structural [ 9 ] changes, as well as environmental aging [ 10 ]. Therefore, PD activity must be detected and the PD sources identified in order to apply corrective actions before significant insulation damage occurs [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

Use of DSLR and Sonic Cameras to Detect and Locate High-Voltage Corona Discharges

Ruiz

Bas-Calopa²

2022

Sensors

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Corona discharges are a concern in high-voltage applications. It is of utmost importance to detect and locate the discharges at an early stage using simple methods for this purpose. This paper evaluates and compares the sensitivity of two methods for detecting and locating the source of discharges, which are based on a digital single-lens reflex (DSLR) camera and a portable wideband sonic camera incorporating a matrix of micro-electromechanical systems (MEMS) microphones. Both cameras can generate an image of the studied area where the discharge sites are identified. The study is carried out with different electrode geometries, 50 Hz alternating current (ac) and positive and negative direct current (dc) supplies, and the effect of the distance between the sensor and the discharge sites is also analyzed. The presented results show that the sonic camera enables fast, simple, and sensitive detection and localization of the source of corona discharges even at a very early stage in daylight conditions, regardless of the type of power supply, that is, ac or positive/negative dc, and at distance of several meters from the discharge source.

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Electric discharge detection and localization using a distributed optical fiber vibration sensor

Cited by 19 publications

References 18 publications

Simulation of Current Pulses and Sound Waves Resulting from Partial Discharges in a Needle-Plane Geometry in Air

Simulation of Current Pulses and Sound Waves Resulting from Partial Discharges in a Needle-Plane Geometry in Air

Application of Image Sensors to Detect and Locate Electrical Discharges: A Review

Use of DSLR and Sonic Cameras to Detect and Locate High-Voltage Corona Discharges

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