Overheating decomposition characteristics of epoxy dielectrics in SF<sub>6</sub> atmosphere

Wen, Hao; Zhang, Xiaoxing

doi:10.1109/tdei.2019.008003

Cited by 12 publications

(5 citation statements)

References 23 publications

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“…As a result, H2O molecules could be released and react with SF6, this reaction develops the thermal decomposition of SF6. In addition, the organic insulating materials attract F atoms from SF6, resulting in low fluorine by-products [42][43] [44]. In a decreasing order of the quantity produced in the thermally induced reaction, or partial overheating fault (POF), are SO2, SOF2, SOF4, SO2F2, and H2S.…”

Section: Sf6 Decomposition By Thermal Effectmentioning

confidence: 99%

“…The concentration of SOF4 and SO2F2 was minimal, and H2S was detected at temperatures above 340 °C. Furthermore, due to the above effect of organic insulating materials under overheating, decomposition of solid insulating materials has also been investigated under varied temperatures [42] [43]. Results had revealed that at 250°C, only H2, CO, CO2, and CH4 can be detected.…”

Section: Sf6 Decomposition By Thermal Effectmentioning

confidence: 99%

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SF₆Decomposed Component Analysis for Partial Discharge Diagnosis in GIS: A Review

2022

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This paper compiles, summarizes, and deliberates over one hundred important works on the different approaches and advances in the surveillance and diagnosis of the internal status of SF6 gas-insulated equipment (GIE), particularly partial discharge (PD) diagnosis in gas-insulated switchgear (GIS), and the proposed diagnosis techniques used. This review focused on four research aspects on PD diagnosis related to the developments in PD detection techniques, PD sources identification, and PD severity evaluation. Besides, the effect of various factors such as gas pressure, applied voltage, and impurities on the deterioration of insulation gas and its influence on the diagnosis process has been reviewed. Currently, some reviews on PD diagnosis in SF6-insulated switchgear have been presented and analysed; however, to date, most of them tend to focus on various PD detection techniques in GIS, while others are not extensive and comprehensive reviews. Unlike the available review publications, this paper highlighted various aspects of PD diagnosis in GIS and created a base for further development. The research trend in this field is expected to be directed toward a comprehensive assessment. This review provided a position of the current PD diagnosis in GIS studies and developments that can be a guideline for researchers for further research on the topic's actual impact in the field.

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Section: Sf6 Decomposition By Thermal Effectmentioning

confidence: 99%

Section: Sf6 Decomposition By Thermal Effectmentioning

confidence: 99%

SF₆Decomposed Component Analysis for Partial Discharge Diagnosis in GIS: A Review

2022

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“…[2][3][4][5] However, EP primarily comprises carbon, hydrogen, and oxygen constituents, rendering it intrinsically prone to ammability, which restricts its potential applications. [6][7][8][9] To solve this problem, ame retardants can be added to the EP matrix to mitigate these combustion-related concerns effectively. Based on chemical composition and mechanism of action, ame retardants can be categorized into organic ame retardants and inorganic ame retardants.…”

Section: Introductionmentioning

confidence: 99%

“…2–5 However, EP primarily comprises carbon, hydrogen, and oxygen constituents, rendering it intrinsically prone to flammability, which restricts its potential applications. 6–9…”

Section: Introductionmentioning

confidence: 99%

A novel P/N/Si/Zn-containing hybrid flame retardant for enhancing flame retardancy and smoke suppression of epoxy resins

Li,

Huang,

Liu

et al. 2024

RSC Adv.

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“…Due to the diversity of complex compositions and extremely low concentrations (10 −9 -10 −6 ) of SF 6 decomposed products, the measurement instruments require high selectivity and sensitivity. Gas chromatography (GC) [6,7] coupled with pulsed discharge helium ionisation discharge detector (PDHID) or mass spectrometry (MS) is the current state of the art for SF 6 decomposition analysis with ppb-level sensitivity, high selectivity, and quantification accuracy. However, GC has several drawbacks for time-resolved and on-site applications: it requires different chromatography columns for the separation of sulfides and carbides, is time-consuming, expensive, difficult to calibrate, and limited in miniaturisation.…”

Section: Introductionmentioning

confidence: 99%

Analysis of SF₆ decomposed products by fibre‐enhanced Raman spectroscopy for gas‐insulated switchgear diagnosis

Wang,

Chen,

Wang

et al. 2023

High Voltage

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Sulphur hexafluoride (SF6) decomposed products analysis is highly critical in the early‐stage fault diagnosis of gas‐insulated switchgear (GIS). Spectrum technology outperforms traditional methods on non‐invasiveness, no sample preparation, and no consumption. Here, the authors present an improved fibre‐enhanced Raman spectroscopy (FERS) as a comprehensive analytical tool to detect a suite of SF6 decomposed products (SO2F2, SOF2, SO2, H2S, CF4, OCS, CO2, and CO). The FERS approach is combined with two iris diaphragms for spatial filtering and a rear‐end reflector for additional Raman signal enhancement. Limits of detection down to 1×10−6–8 × 10−6 are achieved for different SF6 decompositions, and quantification of an undefined multigas, sampled from an 800 kV GIS in service, is realised utilising SF6 as the internal standard gas and with a maximum error of 5.5 %. The GIS is diagnosed according to the results and confirmed by an on‐site check. The authors foresee that this technique will provide a route for trace gas analysis in the power industry.

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Overheating decomposition characteristics of epoxy dielectrics in SF₆ atmosphere

Cited by 12 publications

References 23 publications

SF₆Decomposed Component Analysis for Partial Discharge Diagnosis in GIS: A Review

SF₆Decomposed Component Analysis for Partial Discharge Diagnosis in GIS: A Review

A novel P/N/Si/Zn-containing hybrid flame retardant for enhancing flame retardancy and smoke suppression of epoxy resins

Analysis of SF₆ decomposed products by fibre‐enhanced Raman spectroscopy for gas‐insulated switchgear diagnosis

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Overheating decomposition characteristics of epoxy dielectrics in SF6 atmosphere

Cited by 12 publications

References 23 publications

SF6Decomposed Component Analysis for Partial Discharge Diagnosis in GIS: A Review

SF6Decomposed Component Analysis for Partial Discharge Diagnosis in GIS: A Review

A novel P/N/Si/Zn-containing hybrid flame retardant for enhancing flame retardancy and smoke suppression of epoxy resins

Analysis of SF6 decomposed products by fibre‐enhanced Raman spectroscopy for gas‐insulated switchgear diagnosis

Contact Info

Product

Resources

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Overheating decomposition characteristics of epoxy dielectrics in SF₆ atmosphere

SF₆Decomposed Component Analysis for Partial Discharge Diagnosis in GIS: A Review

SF₆Decomposed Component Analysis for Partial Discharge Diagnosis in GIS: A Review

Analysis of SF₆ decomposed products by fibre‐enhanced Raman spectroscopy for gas‐insulated switchgear diagnosis