ANALYSIS OF MOTION AND PARTIAL DISCHARGE CHARACTERISTICS OF METAL PARTI-CLES EXCITED BY MECHANICAL VIBRATION UNDER POWER FREQUENCY VOLTAGE
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ANALYSIS OF MOTION AND PARTIAL DISCHARGE CHARACTERISTICS OF METAL PARTI-CLES EXCITED BY MECHANICAL VIBRATION UNDER POWER FREQUENCY VOLTAGE
High VoltageApparatus(2026)
作者机构:
1.国网河南省电力公司,郑州 450052
2.国网河南省电力公司电力科学研究院,郑州 450052
3.西安交通大学电工材料电气绝缘全国重点实验室,西安 710049
作者简介:
基金信息:
DOI:
CLC:
Received:15 August 2024,
Revised:2024-11-05,
Accepted:12 November 2024,
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JIANG Haibo, YAN Jingjie, WANG Yi, et al. ANALYSIS OF MOTION AND PARTIAL DISCHARGE CHARACTERISTICS OF METAL PARTI-CLES EXCITED BY MECHANICAL VIBRATION UNDER POWER FREQUENCY VOLTAGE[J/OL]. High VoltageApparatus, 2026.
DOI:
JIANG Haibo, YAN Jingjie, WANG Yi, et al. ANALYSIS OF MOTION AND PARTIAL DISCHARGE CHARACTERISTICS OF METAL PARTI-CLES EXCITED BY MECHANICAL VIBRATION UNDER POWER FREQUENCY VOLTAGE[J/OL]. High VoltageApparatus, 2026.DOI:
ANALYSIS OF MOTION AND PARTIAL DISCHARGE CHARACTERISTICS OF METAL PARTI-CLES EXCITED BY MECHANICAL VIBRATION UNDER POWER FREQUENCY VOLTAGE
GIS has the advantages of small space and high insulation performance
and is widely used in power grid. However
the movement of free metal particles in its interior will reduce its insulation stability
leaving hidden dangers for the safe and reliable operation of the equipment. Firstly
the motion behavior of free metal particles and the change of take-off voltage under different working conditions are studied. The results show that vibration excitation can broaden the motion range of metal particles and effectively reduce their take-off voltage by 29.8%
and then three typical motion modes of the particles are established. Secondly
pulse current method was used to measure and analyze the discharge characteristics of metal particles under vibration excitation. The results showed that the application of vibration increased the dispersion of PRPD spectra of metal particles to a certain extent
and the maximum discharge of small size and low density metal particles significantly increased
and the maximum discharge of 0.5mm aluminum particles increased by 146%. And after reaching a certain voltage threshold rapidly increase
easy to cause breakdown; The mechanical vibration excitation has little effect on the partial discharge characteristics of heavy particles such as 1mm copper particles. The research results can provide theoretical support for the detection and analysis of free metal particles in GIS active circuit breakers in practical engineering.
Morcos M M , Ward S A , Anis H , et al . Insulation integrity of GIS/GITL systems and management of particle contamination [J ] . IEEE Electrical Insulation Magazine , 2000 , 16 ( 5 ): 25 - 37 .