Proceedings ArticleDOI
The study of Archimedean spiral antenna for partial discharge measurement
Qingyan Wu,Guoqiang Liu,Zhengwu Xia,Liang Lu +3 more
- pp 694-698
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TLDR
In this article, a wide bandwidth Archimedean spiral antenna was designed and its main parameters were analyzed by computer simulation software, and three typical partial discharge models were used to detect the three models.Abstract:
Partial discharge (PD) is an important indicator for electrical equipment's insulation property in power industry. Through the measurement of partial discharge we can have a good understanding of the equipment's performance. Ultra High Frequency (UHF) detection techniques are being recently a more and more important method to detect partial discharges. In this paper, a wide bandwidth Archimedean spiral antenna was designed. Its main parameters were analyzed by computer simulation software. A partial discharge test platform was built and three typical partial discharge models were designed. We used the designed Archimedean spiral antenna to detect the three models. The experiment results show that the designed Archimedean spiral antenna has good performance to measure electrical equipment partial discharge signals.read more
Citations
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Optimisation of a sensor for onsite detection of partial discharges in power transformers by the UHF method
TL;DR: In this paper, a conical monopole antenna structure was built and attached to a specially designed housing to be fitted inside the transformer tank through the drain valve, which was used to evaluate differences in radiation pattern, antenna impedance, gain and effective area.
Journal ArticleDOI
On-Line Partial Discharge Monitoring System for Power Transformers Based on the Simultaneous Detection of High Frequency, Ultra-High Frequency, and Acoustic Emission Signals
TL;DR: In this article, the authors presented a novel on-line partial discharge (PD) monitoring system for power transformers, whose functioning is based on the simultaneous use of three unconventional methods of PD detection: high-frequency (HF), ultra-high frequency (UHF), and acoustic emission (AE).
Proceedings ArticleDOI
Two planar antennas for detection of partial discharge in gas-insulated switchgear (GIS)
TL;DR: In this paper, a planar complex spiral antenna and a fractal tree log-periodic dipole antenna are used to detect partial discharge in GIS infrastructure, where the RF energy of partial discharge progressively degrades the insulating medium and as a result electrical breakdown can occur.
References
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Journal ArticleDOI
Partial discharge monitoring of power transformers using UHF sensors. Part I: sensors and signal interpretation
TL;DR: In this article, the propagation velocity matrix (PVM) and propagation time matrix (PTM) were introduced to detect partial discharge (PD) in power transformers, which can be used to index a database of physical descriptions of the transformer that could provide additional information to assist with diagnosis.
Journal ArticleDOI
The excitation of UHF signals by partial discharges in GIS
TL;DR: In this article, the fundamental theory of the UHF method for detecting partial discharge (PD) in gas insulated substations (GIS) is presented, and the effects of position, size, current amplitude, and pulse shape of the PD source on the signal can be predicted using this theory.
Journal ArticleDOI
Optimisation of a sensor for onsite detection of partial discharges in power transformers by the UHF method
TL;DR: In this paper, a conical monopole antenna structure was built and attached to a specially designed housing to be fitted inside the transformer tank through the drain valve, which was used to evaluate differences in radiation pattern, antenna impedance, gain and effective area.
Optimisation of a sensor for onsite detection of partial discharges in power transformers by the UHF method
TL;DR: In this paper, a conical monopole antenna structure was built and attached to a specially designed housing to be fitted inside the transformer tank through the drain valve, which was used to evaluate differences in radiation pattern, antenna impedance, gain and effective area.
Acoustic Measurements of Partial Discharge Signals
TL;DR: In this article, the acoustic pressure wave associated with partial discharges in HV power transformers can be detected with external piezoelectric sensors, which can be used as a new diagnostic method for discharge location.