6 decomposed products and the type and severity of th'/> Correlation between SF6 Decomposed Products and Defect Type and Partial Discharge State in DC GIS
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Correlation between SF6 Decomposed Products and Defect Type and Partial Discharge State in DC GIS

机译：DC GIS中SF6分解产品和缺陷型和偏出状态的相关性

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In order to study the relationship between SF6 decomposed products and the type and severity of the insulation defect in gas-insulated switchgear (GIS), two defect models of metal tip and free metal particle were developed, and the pulse signal characteristics during the partial discharge (PD) development process were studied. It is proposed to use $q_{v}$ and $n_{v}$ as the characteristic parameters to divide the PD development process into three stages. Then, the SF6decomposition experiment was carried out in each PD stage. The results showed that SF6was decomposed and produced stable products such as CF4, SO2, CO2, SO2F2and SOF2. Under the tip defect, CO2, SO2F2and SOF2 were the main decomposed products; under the particle defect, SOF2was the main product. Finally, the correlations between the concentration and defect type, as well as the concentration ratio and PD state were studied separately. It is proposed to use $C(ext{CO}_{2}), C(ext{SO}_{2}mathrm{F}_{2})$ and $C(ext{SOF}_{2})$ to identify the two defects, and use $R(ext{CF}_{4}/ext{CO}_{2})$ and $R[ext{SO}_{2}mathrm{F}_{2}/(ext{SOF}_{2}+ext{SO}_{2})]$ to assess the PD state of two defects.
机译：为了研究SF之间的关系 6 分解的产品和气体绝缘开关设备（GIS）中绝缘缺陷的类型和严重程度，显影了两个金属尖端和游离金属颗粒的缺陷模型，研究了局部放电（PD）开发过程中的脉冲信号特性。建议使用 $ q_ {v} $ < / tex> 和 $ n_ {v} $ < / tex> 作为将PD开发过程划分为三个阶段的特征参数。然后，sf 6 分解实验在每个PD阶段进行。结果表明SF 6 被分解并生产稳定的产品，如CF 4 ， 所以 2 ，CO. 2 ， 所以 2 F 2 和SOF. 2 。在尖端缺陷下，CO 2 ， 所以 2 F 2 和SOF2是主要的分解产品;在颗粒缺陷下，SOF 2 是主要产品。最后，分别研究了浓度和缺陷型之间的相关性以及浓度比和PD状态。建议使用 $ c（ text {co } _ {2}）， c（ text {so} _ {2} mathrm {f} _ {2}）$ 和 $ c（ text {sof } _ {2}）$ 识别两个缺陷，并使用 $ r（ text {cf } _ {4} / text {co} _ {2}）$ 和 $ r [ text {so } _ {2} mathrm {f} _ {2} /（ text {sof} _ {2} + text {so} _ {2}）] $ 评估两个缺陷的PD状态。

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