Early prediction of surge arrester failures by dielectric characterization

Bassi, Welson; Tatizawa, Hédio

doi:10.1109/mei.2016.7414229

Cited by 20 publications

(10 citation statements)

References 12 publications

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“…The effects of these multiple impacts were modeled and reproduced in the laboratory. In 2016, Bassi and Tatizawa [28] published important work on the degradation of lightning pads and their effects on their functioning. Finally, in 2017, He and coauthors [29] extended the work of multiple atmospheric discharges on the same lightning arrester, presenting unknown consequences and effects.…”

Section: State Of the Artmentioning

confidence: 99%

Projects for Predictive Maintenance and Operation between COPET G&T and Gnarus Institute

Silva¹,

Martins²,

Xavier³

et al. 2021

Braz. arch. biol. technol.

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The continuity of an electrical system's services is linked to its equipment's correct operation. The more correctly they worked, the higher the quality of the services provided. Thus, they must have their functioning scanned closely and that minor defects have their evolution monitored. This fact creates the possibility of making predictions about how long equipment can operate without compromising the system's continuity. This follow-up is proper for predictive maintenance. This paper presents three on-going COPEL Generation and Transmission projects in essential elements of its electrical system: circuit breakers, lightning arresters, and SF6 substation. The central idea of all monitoring projects is to check the early problem in this equipment and facilities.

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Section: State Of the Artmentioning

confidence: 99%

Projects for Predictive Maintenance and Operation between COPET G&T and Gnarus Institute

Silva¹,

Martins²,

Xavier³

et al. 2021

Braz. arch. biol. technol.

View full text Add to dashboard Cite

show abstract

“…When encountering large current arc, due to the limited thermal capacity of the arrester, it is easy to cause the explosion and short circuit. As a result, lightning protection fails, and it takes a lot of manpower and material resources to install lightning arresters on the whole line, which is a bit unrealistic [5][6][7][8][9][10][11][12][13][14]. Reducing the grounding resistance of tower pole is affected by soil and terrain [15].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on a Compressed Arc Extinguishing Device for Power Distribution Network

Huang

Liu

Leng

et al. 2021

IEEJ Transactions Elec Engng

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A compressed arc extinguishing device for power distribution network is developed to solve the problem of existing anti‐lightning of power distribution network transmission lines. This paper first introduces the arc extinguishing principle of the arc extinguishing device, and then designs the lightning impulse voltage test around the 10 kV transmission line. The test results show that the U50% Lightning impulse voltage of the arc extinguishing device is 112.4 kV considering the atmospheric correction factor. In order to verify the feasibility of the arc extinguishing device, the power frequency continuous current interruption test is designed. The test shows that the arc extinguishing device can extinguish the arc with a peak value of 1.131 kA in 2 ms and does not reignite in the following time. Finally, the device is applied to a 10 kV power distribution network transmission line of China Southern Power Grid. The lightning trip‐out rate of the transmission line per 100 km is reduced from 12.5 (times/year) to 1.1 (times/year), which fully verifies the feasibility of the arc extinguishing device. © 2021 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.

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“…Currently, an 8/20 µs single pulse waveform had been adopted for such tests [3,4]. A host of studies have been presented regarding the performance changes that occur in ZnO varistors under single pulse lightning impulses [5][6][7][8]. However, modern lightning observations and artificially triggered lightning acquisition data have shown that two-thirds of the lightning events in natural settings are a multi-pulse process.…”

Section: Introductionmentioning

confidence: 99%

An Experimental Study of the Failure Mode of ZnO Varistors Under Multiple Lightning Strokes

Zhang

Xing

et al. 2019

Electronics

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In this study, in order to explore the failure mode of ZnO varistors under multiple lightning strokes, a five-pulse 8/20 μs nominal lightning current with pulse intervals of 50 ms was applied to ZnO varistors. Scanning electron microscopy (SEM) and X-ray diffractometry (XRD) were used to analyze the microstructure of the material. The failure processes of ZnO varistors caused by multiple lightning impulse currents were described. The performance changes of ZnO varistors after multiple lightning impulses were analyzed from both macro and micro perspectives. According to the results of this study’s experiments, the macroscopic failure mode of ZnO varistors after multiple lightning impulses involved the rapid deterioration of the electrical parameters with the increase of the number of impulse groups, until destruction occurred by side-corner cracking. The microstructural examination indicated that, after the multiple lightning strokes, the proportion of Bi in the crystal phases was altered, the grain size of the ZnO varistors became smaller, and the white intergranular phase (Bi-rich grain boundary layer) increased significantly. The failure mechanism was thermal damage and grain boundary structure damage caused by temperature gradient thermal stress, generated by multiple lightning currents.

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Early prediction of surge arrester failures by dielectric characterization

Cited by 20 publications

References 12 publications

Projects for Predictive Maintenance and Operation between COPET G&T and Gnarus Institute

Projects for Predictive Maintenance and Operation between COPET G&T and Gnarus Institute

Experimental Study on a Compressed Arc Extinguishing Device for Power Distribution Network

An Experimental Study of the Failure Mode of ZnO Varistors Under Multiple Lightning Strokes

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