Z. Yi et al.
ment results when the compensation method is used.
The 0.618 compensation method in the theoretical is taking the 0.5 current electrode length as the zero poten-
tial point, through potential compensation to realize the inherent error compensation of the voltage electrode po-
sition. Compared to railway integrated grounding system of long distance run-through grounding wire, the cur-
rent electrode is very small vertical grounding electrode. The current field distribution distortion is serious when
the current electrode wiring is short. The zero potential position has big error, The error will be small when the
current electrode wiring is longer.
When the current electrode wiring is 36 m, the measurement result of reverse away method is 0.31 Ω. While
the current electrode wiring is 430 m, the measurement result of compensation method is 0.301 Ω. When the
current electrode wiring is 60 m, the measurement result of reverse away method is 0.294 Ω. While the current
electrode wiring is 710 m, the measurement result of compensation method is 0.29 Ω. The measurement results
of the two methods are almost the same.
When the current electrode wiring is the same, compared to the compensation method, the measurement result
of the reverse away method converges quickly. The reverse away method is helpful to reduce the current elec-
trode wiring.
But the measurement result of the reverse away method is smaller than the measurement result of the com-
pensation method, which is similar to [7]. The amendment will be completed in the future work.
5. Conclusions
This paper respectively adopted 0.618 compensation method and reverse away method by two types of instru-
ments, and measured a section of high-speed railway integrated grounding system grounding impedance.
1) Measurement results are in good agreement using the two types of instruments by using 0.618 compensa-
tion method and reverse away method.
2) By using 0.618 compensation method, the measurement result will be gradually converged at 0.3 Ω. By
using reverse away method, the measurement results will be rapidly converged 0.25 Ω. Convergence rate of re-
verse away method is quicker than 0.618 compensation method.
3) The measurement result of the reverse away method is smaller than the measurement result of the 0.618
compensation method, so amendment will be considered in the future work.
4) Reverse away method is helpful to shorten the length of current electrode wiring.
References
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