The Research of Voltage Sag and Power Frequency Overvoltage on 110kV Resistance Grounding System ()
Guo Zeng,
Guangliang Feng,
Yanping Lv,
Shan Sun
Huangshi Power Supply Company, Huangshi, China.
School of Electrical Engineering, Wuhan University, Wuhan, China.
DOI: 10.4236/epe.2013.54B167
PDF HTML
4,750
Downloads
5,749
Views
Citations
Abstract
This paper researches the
voltage transfer characteristics when one-phase ground fault occurred in the
resistance grounding system, by using the theory of the asymmetric variable
characteristics and the sequence network analysis of the -11 transformer, and
concludes the scope of voltage sag and swell and the degree of power frequency
overvoltage and their influencing factors in the 110 kV resistance
grounding system. Accordingly this paper puts forward the resistance choosing
principle: the resistance grounding coefficient must be equal to or greater
than 10. So it can not only wipe out the voltage sag and voltage swell but
also make sure the overvoltage is limited to electrical equipment allowing
range. The method mentioned above is verified by simulation results of a 110 kV power
system in ATP.
Share and Cite:
G. Zeng, G. Feng, Y. Lv and S. Sun, "The Research of Voltage Sag and Power Frequency Overvoltage on 110kV Resistance Grounding System,"
Energy and Power Engineering, Vol. 5 No. 4B, 2013, pp. 873-876. doi:
10.4236/epe.2013.54B167.
Conflicts of Interest
The authors declare no conflicts of interest.
References
|
[1]
|
Y. Li, Y. P. Duan, J. Qiu, et al., Voltage Sag Analysis and Fault Position Sag Coefficient Calculation, High Voltage Engineering, Vol. 32, No. 7, 2006，pp. 113-115.
|
|
[2]
|
IEEE Recommended Practice for Evaluating Electric Power System Compatibility with Electronic Process Equipment[S]. IEEE Standard，1998, pp. 1346-1998.
|
|
[3]
|
D. Tao and X. N. Xiao, “Voltage Sags Types under Different Grouding Modes of Neutral and Their Propagation: partⅡ, Transactions of China Electrotechnical Society, Vol. 22, No. 10, 2007，pp. 156-159.
|
|
[4]
|
G. R. Xie, “Power System Overvoltage,” Wuhan Water Electrical Institute Press, China, 1985.
|
|
[5]
|
The People’s Republic of Electrical Power Industry. Overvoltage Protection and Insulation Coordination for AC Electrical Installations, Beijing, China: China Electric Power Press, 2010.
|
|
[6]
|
Z. Y. Xu, “Digital Protection for Power Transformer and Medial-low Voltage Electric Power Net,” China WaterPower Press, Beijing, China, 2004.
|