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 EPE  Vol.12 No.4 B , April 2020
A Novel Modularizing Design Method of 10 kV High Voltage Switchgear for Live Maintenance
Abstract:
Due to imperfect manufacturing technology, design defects and environmental impact, the failure rate of 10 kV switchgear is very high. For this reason, based on taken present situation of traditional switchgear and the current technical requirements for switchgear into account, a new reliable and safe modular high voltage switchgear design method is presented in this paper, which can reduce the failure rate of switchgear and improve the reliability of power supply. The electric field and temperature rise simulation model are established to check the reasonability and validity. By using the finite element software, the simulation results show that the design in this paper has a maximum temperature rise of 55 K for the main cabinet and a maximum temperature rise of 45 K for the deputy cabinet, which is far below the international standard of 70 K. The areas where the partial discharge is likely to occur within the switchgear are places such as the connection between bus-bar and cabinet, bus-bar joint and bus-bar corner. In order to avoid potential dangers, the discharge point must be located in time to prevent insulation fault of electrical equipment of the high voltage switchgear. The simulation results demonstrate that the design method in this paper greatly improve the reliability of switchgear and meets the demands of power system.
Cite this paper: Yao, Y. , Ouyang, X. , Zeng, G. , Tang, Q. and Ma, W. (2020) A Novel Modularizing Design Method of 10 kV High Voltage Switchgear for Live Maintenance. Energy and Power Engineering, 12, 1-13. doi: 10.4236/epe.2020.124B001.
References

[1]   Zeng, X., li, X., Zeng, S., Meng, C., Xiao, X. and Yao, S. (2016) Hazards and Protection of Internal Arc Fault of 10 kV Switchgear. Guangdong Electric Power, 29, 67-71.

[2]   Wang, J., Xu, C. and Sun, J. (2014) Experimental Study of Fault Arc Protection Based on UV Pulse Method in High Voltage Switchgear. International Journal of Emerging Electric Power Systems, No. 3. https://doi.org/10.1515/ijeeps-2013-0151

[3]   Bao, J. and Yang, W. (2016) Influence of High Humidity Environment on Switchgear Equipment and Solutions. Electrical Technology. No. 11.

[4]   Du, Z. (2016) Study on Causes of Overheating of High-Pressure Switchgear and Monitoring Measures. Chinese High-Tech Enterprises, No. 6.

[5]   Ma, K. (2017) Study on Insulation Performance Testing and Fault Diagnosis Technology of Substation High-Voltage Switchgear. China New Technology and New Products, No. 2.

[6]   Ji, T., et al. (2017) The Research of High Voltage Switchgear Detecting Unit. Journal of IOP Conference Series: Materials Science and Engineering, 22. https://doi.org/10.1088/1757-899X/222/1/012021

[7]   Zhao, B. and Zhang, H. (2010) Application of Ansoft 12 in Engineering Electromagnetic Field. China Water Resources and Hydropower Press, Beijing.

[8]   Tian, G. (2015) Study on Dielectric Breakdown Characteristics under GIS Isolation Switch Operating Conditions. Wuhan University of Technology, Wuhan.

 
 
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