电气设备绝缘系统局部放电检测技术研究

doi:10.16180/j.cnki.issn1007-7820.2019.11.017

摘要/Abstract

摘要：

国内SF6气体绝缘类的电气设备常发生局部放电故障,影响电力系统的安全稳定运行。针对这种情况,文中提出了基于电气设备局部放电的超声波检测技术,对电气设备进行局部放电故障检测与诊断,同时对电力变压器的在线监测进行诊断,最终给出电力变压器的检测图谱。通过使用超声波对SF6气体绝缘类电气设备进行实例验证,结果表明采用超声波技术可以准确地检测出电气设备的电晕放电、悬浮放电等故障。

关键词: 气体绝缘, 局部放电, 超声波, 故障检测

Abstract:

Domestic SF6 gas-insulated electrical equipment often has partial discharge faults, expounds the common causes of partial discharge faults, proposes ultrasonic detection technology for partial discharge of electrical equipment, performs partial discharge fault detection and diagnosis on electrical equipment, and simultaneously applied to power transformers. On line monitoring for was given a test map of the power transformer. The ultrasonic verification of SF6 gas-insulated electrical equipment was carried out. The results showed that the ultrasonic technology can detect the corona discharge and suspension discharge of electrical equipment sensitively.

Key words: gas insulation, partial discharge, ultrasonic, troubleshooting

中图分类号:

TP212

卓晓冬. 电气设备绝缘系统局部放电检测技术研究[J]. 电子科技, 2019, 32(11): 83-86.

ZHUO Xiaodong. Research on Partial Discharge Detection Technology of Electrical Equipment Insulation System[J]. Electronic Science and Technology, 2019, 32(11): 83-86.

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检测点	A-B、C、地有效值/峰值	B-A、C、地有效值/峰值	C-A、C、地有效值/峰值
14号A点	0.24/0.6	0.26/0.6	13.0/56.0
13号A点敲击	0.23/0.6	0.23/0.7	15.0/60.0
14号A点敲击	0.35/0.6	0.16/0.6	22.0/108.0
13号B点敲击	0.69/0.6	0.21/0.8	0.15/0.66
14号B点敲击	0.28/0.7	4.90/12.0	1.6/4.9