摘要详情
858 / 2022-06-14 16:51:36
Research on Distribution Characteristics of Stray Current in Metro Network
stray current,metro network,OVPD
终稿
Research on Distribution Characteristics of Stray Current in Metro Network
Yin Mingming
Xi hua University
1263648345@qq.com
Purpose/Aim
With the large-scale and networked development of subways, the superposition of subway stray currents will increase, and the problems of buried metal corrosion and main transformer DC bias caused by stray currents will become more serious. Therefore, it is necessary to carry out research on subway network modeling and analyze the distribution characteristics of stray current in networked subways.
Experimental/Modeling methods
Based on the through-structure of the grounding system of the subway network, using the centralized parameter modeling method, a three-layer networked subway analytical model of "rail-drainage network-through grounding" is established, and the switching and switching of the rail limit device (OVPD) are analyzed. Effects of equivalent resistance parameters on the distribution characteristics of stray currents in subway networks.
Results/discussion
In order to verify the validity of the model, the proposed modeling method is used to establish a single-section bilateral power supply line and the simulation results are compared with those of the traditional model. Under the same conditions, the simulation results of rail potential and stray current between the model in this paper and the traditional model are in good agreement, so the proposed modeling method can be considered effective.
Conclusions
Yin Mingming
Xi hua University
1263648345@qq.com
Purpose/Aim
With the large-scale and networked development of subways, the superposition of subway stray currents will increase, and the problems of buried metal corrosion and main transformer DC bias caused by stray currents will become more serious. Therefore, it is necessary to carry out research on subway network modeling and analyze the distribution characteristics of stray current in networked subways.
Experimental/Modeling methods
Based on the through-structure of the grounding system of the subway network, using the centralized parameter modeling method, a three-layer networked subway analytical model of "rail-drainage network-through grounding" is established, and the switching and switching of the rail limit device (OVPD) are analyzed. Effects of equivalent resistance parameters on the distribution characteristics of stray currents in subway networks.
Results/discussion
In order to verify the validity of the model, the proposed modeling method is used to establish a single-section bilateral power supply line and the simulation results are compared with those of the traditional model. Under the same conditions, the simulation results of rail potential and stray current between the model in this paper and the traditional model are in good agreement, so the proposed modeling method can be considered effective.
Conclusions
- The action of OVPD will affect the increase of the rail potential amplitude at the far-end station of the line, which will lead to the chain action of OVPD.
- In the networked subway structure, the action of OVPD affects the rail potential level in other subway lines.
- When the equivalent internal resistance of the OVPD device changes in the range of 0.1~10Ω, the rail potential and stray current fluctuate greatly.
重要日期
-
会议日期
09月25日
2022
至09月29日
2022
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08月15日 2022
提前注册日期
-
09月10日 2022
报告提交截止日期
-
11月10日 2022
注册截止日期
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11月30日 2022
初稿截稿日期
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11月30日 2022
终稿截稿日期
主办单位
IEEE DEIS
承办单位
Chongqing University
联系方式
- Zhengyong Huang
- 61******@qq.com
历届会议
-
2020年09月06日 中国 Beijing
2020 IEEE International Conference on High Voltage Engineering and Application -
2018年09月10日 希腊
2018 IEEE International Conference on High Voltage Engineering and Application -
2016年09月19日 中国 Chengdu, China
2016 IEEE International Conference on High Voltage Engineering and Application
