Presentation Details
Development of a Stray Current Testing Device Based on Harmonic Current Source Technology
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Updated Time：2022-08-29 15:53:02 Hits：256
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Abstract
Purpose/Aim
With the rapid development of rail transit, the risk of DC bias caused by stray current has attracted the attention of researchers. Therefore, it is necessary to carry out relevant tests in the laboratory. The core equipment is the stray current testing device, which needs to been developed.
Experimental/Modeling methods
Based on the harmonic current source technology, a stray current testing device has been proposed. After the three-phase power frequency alternating current is input, two groups of three-phase power supplies are generated through the phase-shifting transformer to supply power to the power units 1 and 2 respectively. The power units are connected in series after being rectified and inverted by an H bridge to realize 5-level output, and the 5-level output is output after passing through an LCL filter.
Results/discussion
When the equipment operates in the constant voltage control mode, the voltage command can be given by the analog quantity or internally generated (DC/multi-band sine wave, etc.), and the output voltage and capacitor current are controlled by double loops. When the equipment operates in the constant current mode, the current command can be given by the analog quantity or internally generated, and the output current is controlled by closed-loop.
Conclusions
In this paper, a stray current testing device based on harmonic current source technology has been proposed. It can reappear the stray current waveform measured on site and serve the transformer DC magnetic bias test.
With the rapid development of rail transit, the risk of DC bias caused by stray current has attracted the attention of researchers. Therefore, it is necessary to carry out relevant tests in the laboratory. The core equipment is the stray current testing device, which needs to been developed.
Experimental/Modeling methods
Based on the harmonic current source technology, a stray current testing device has been proposed. After the three-phase power frequency alternating current is input, two groups of three-phase power supplies are generated through the phase-shifting transformer to supply power to the power units 1 and 2 respectively. The power units are connected in series after being rectified and inverted by an H bridge to realize 5-level output, and the 5-level output is output after passing through an LCL filter.
Results/discussion
When the equipment operates in the constant voltage control mode, the voltage command can be given by the analog quantity or internally generated (DC/multi-band sine wave, etc.), and the output voltage and capacitor current are controlled by double loops. When the equipment operates in the constant current mode, the current command can be given by the analog quantity or internally generated, and the output current is controlled by closed-loop.
Conclusions
In this paper, a stray current testing device based on harmonic current source technology has been proposed. It can reappear the stray current waveform measured on site and serve the transformer DC magnetic bias test.
Keywords
Stray Current Source,DC bias,Harmonic Current Source,Laboratory test
Speaker
Zhuohong PAN
North China Electric Power UniversitySubmission Author
All Comments
Important Date
-
Conference Date
Sep 25
2022
toSep 29
2022
-
Aug 15 2022
Early Bird Registration
-
Sep 10 2022
Contribution Submission Deadline
-
Nov 10 2022
Registration deadline
-
Nov 30 2022
Draft paper submission deadline
-
Nov 30 2022
Final Paper Deadline
Sponsored By
IEEE DEIS
Organized By
Chongqing University
Contact Information
- Zhengyong Huang
- 61******@qq.com
Previous Conferences
-
2020-09-06 China Beijing
2020 IEEE International Conference on High Voltage Engineering and Application -
2018-09-10 Greece
2018 IEEE International Conference on High Voltage Engineering and Application -
2016-09-19 China Chengdu, China
2016 IEEE International Conference on High Voltage Engineering and Application
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