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High-Resolution Optical Partial Discharge Detection for High <inline-formula> <tex-math notation="LaTeX">$dv/dt$ </tex-math></inline-formula> Pulse Voltage
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DOI：10.1109/TIM.2025.3648103.png)
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Abstract
En 中文
The application of power semiconductor devices has increased the risk of partial discharge (PD) under high <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$dv$ </tex-math></inline-formula>/<inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$dt$ </tex-math></inline-formula> voltage. However, high-resolution sensing systems are essential for accurately detecting PD under the special conditions. A built-in high-resolution fluorescent fiber sensor system is proposed for high <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$dv$ </tex-math></inline-formula>/<inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$dt$ </tex-math></inline-formula> PD measurement. Considering the propagation of discharge light, the generation, transmission, and photoelectric conversion of fluorescence, a mathematical model is established to characterize the relationship between fiber layout and the detected light intensity. The accuracy of the model is verified and the fiber probe parameters are optimized through PD measurements. On the basis, accurate PD detection and feature analysis are conducted under high frequency and high <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$dv$ </tex-math></inline-formula>/<inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$dt$ </tex-math></inline-formula> pulse voltages. By comparing with conventional ultrahigh-frequency (UHF) and high-frequency current transformer (HFCT) sensors, the fluorescent fiber system shows superior performance in sensitivity, resolution, and anti-interference abilities. Specifically, it offers high detection sensitivity, achieving nanosecond optical pulse oscillation-free acquisition with a 1.5-ns half-peak width of the pulse output, much lower than 50 ns of HFCT. It exhibits a discharge detection rate comparable to UHF and the highest signal-to-noise ratio (SNR) output while avoiding electromagnetic interference (EMI). This research presents an effective approach for PD detection under high <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$dv$ </tex-math></inline-formula>/<inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$dt$ </tex-math></inline-formula> voltage and has great potential for industrial applications.
Keywords:
Fluorescence fiber
high resolution
optical sensing
partial discharge (PD)
pulse voltage
Journal
IF:
5.9
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1.9W
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