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故障模拟油纸绝缘套管油中溶解气体变化特性
Change Characteristics of Dissolved Gas in Oil of Fault Simulation OIP Bushing
- 高压电器 2025年 页码：1-12
- 作者机构：
中国电力科学研究院有限公司电网环境保护国家重点实验室，武汉 430074
- 作者简介：
刘琴（1985—），女，硕士，高级工程师，主要从事高压套管技术、气体绝缘电气设备气状态监测技术、输电线路防污闪技术、电晕损失研究等（E-mail：liuqin2@epri.sgcc.com.cn）。
罗晓庆（1988—），男，硕士，高级工程师，主要从事套管关键技术和空气间隙特性研究（E-mail：luoxiaoqing@epri.sgcc.com.cn）。
谢雄杰（1983—），男，博士，教授级高工，主要从事套管关键技术和输电工程设备电晕特性研究（E-mail：xiexiongjie@epri.sgcc.com.cn）。
- 基金信息：国家电网有限公司总部管理科技项目(5500-202140114A-0-0-00)
DOI：
中图分类号：-
纸质出版日期：
- 稿件说明：
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刘琴, 罗晓庆, 谢雄杰, 等. 故障模拟油纸绝缘套管油中溶解气体变化特性[J/OL]. 高压电器, 2025,1-12.
LIU Qin, LUO Xiaoqing, XIE Xiongjie, et al. Change Characteristics of Dissolved Gas in Oil of Fault Simulation OIP Bushing[J/OL]. High voltage apparatus, 2025, 1-12.
摘要
少油类设备通过内部填充绝缘油进行内绝缘，在发生放电或过热故障时，会引起绝缘油劣化而产生H
2
、烃类气体、CO和CO
2
等溶解气体，严重时会导致设备爆炸。文中模拟了油纸绝缘套管放电类（绝缘受潮、主绝缘设计及工艺缺陷）和过热类（载流结构件故障）典型故障，并对故障套管油中溶解气体进行监测。研究结果表明4种绝缘故障下，产气量由小到大依次为层间气泡、绝缘受潮、主绝缘设计缺陷和极板缺陷；故障套管施加额定电压下，会产生局部放电，会持续产生H
2
，4种绝缘故障H
2
的产气速率随加压时间呈现缓慢增长并逐渐趋于饱和的趋势；4种绝缘故障下C
2
H
2
的产气速率随加压时间呈现先缓慢增长后快速增长的趋势，快速增长出现的时间不同，其中极板缺陷和主绝缘设计缺陷后期C
2
H
2
产气速率增长较快，绝缘受潮和层间气泡后期C
2
H
2
产气速率增长较缓。载流结构件缺陷套管烃类气体产气量由少到多分别为C
2
H
6
、CH
4
、C
2
H
4
、C
2
H
2
，C
2
H
2
体积分数较H
2
多，总烃产气量较绝缘放电大，H
2
的产气速率随加压时间呈现持续缓慢增长的趋势，但载流结构件缺陷下H
2
产气速率较绝缘缺陷慢，C
2
H
2
产气速率较绝缘缺陷快。文中主要结论对于少油类设备产气下的故障分析具有重要的意义。
Abstract
The oil-less equipment is internally insulated by filling with insulating oil
when a discharge or overheating failure occurs
H
2
hydrocarbon gas
CO and CO
2
and other dissolved gases can be produced
in serious cases
it may cause equipment explosion. This paper simulates the typical faults of oil-paper insulation bushing
such as discharge (damp insulation
main insulation design and process defects) and overheating (fault of current-carrying structure)
and monitor the dissolved gas in the fault casing oil. The results show that
under four insulation faults
the gas production from small to large is interlayer bubble
insulation damp
main insulation design defect and electrode plate defect. When the fault bushing is applied with rated voltage
will produce partial discharge
will continue to produce H
2
the gas production rate of four kinds of insulation faults H
2
sh
ows a slow increase and gradually tends to saturation with the pressurization time. The gas production rate of C
2
H
2
under four kinds of insulation faults shows a trend of slow growth at first and then rapid growth with pressurization time
rapid growth occurs at different times
among them
the C
2
H
2
gas production rate increases rapidly in the later period due to the defects of the electrode plate and the main insulation design
The growth rate of C
2
H
2
gas production is slow in the later stage of insulation damp and interlayer bubble. The hydrocarbon gas production of the defective casing of the current-carrying structural parts from less to more is C
2
H
6
CH
4
C
2
H
4
and C
2
H
2
the content of C
2
H
2
is more than H
2
total hydrocarbon gas production is larger than insulation discharge
the gas production rate of H
2
shows a continuous and slow growth trend with the pressurization time
however
the H
2
gas production rate of defect of current-carrying structural parts is slower than the insulation defect
the C
2
H
2
gas production rate is faster than insulation defect. The main conclusions of this paper are of great significance to the gas production fault analysis of the less oil equipment.
关键词
Keywords
references
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