Citation

Wang B, Wu GN, Zhou LJ, Dong AP, Gao GQ, Fan JB. J. Traffic Transp. Eng. (Xi'an, Shaanxi) 2011; 11(5): 28-34.

Copyright

(Copyright © 2011, Chang'an Daxue)

DOI

unavailable

PMID

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Abstract

The decreasing degree of rail potential was taken as a standard for evaluating integrated grounding effectiveness. The relationship among rail potential, integrated grounding line impedance and shunt coefficient was analyzed. The integrated grounding effectiveness evaluating system(IGEES) was developed, and the main influence factors of integrated grounding line impedance and shunt coefficient were studied. The theoretical result and measurement result of IGEES were compared. Analysis result shows that rail potential increases with the increasing of integrated grounding line impedance, and decreases with the increasing of shunt coefficient. The material and size of integrated grounding line, soil resistivity and transversal connection interval have great effect on grounding impedance and shunt coefficient, while the effect of buried depth is relatively insignificant. The differences between IGEES results and measurement results of grounding impedance and shunt coefficient are 18%, 5.62% respectively. The calculation error of IGEES is lesser, and IGEES can be used in the design and construction of integrated grounding system on high-speed railway.