Accurate Measurement of Tower Grounding Resistance for Single-Tower and Multi-Tower Parallel Scenarios Based on the Clamp Meter Method: For the Sustainable Operation of Towers

Yixuan Zhang, Zoujun Wang, Kaiwen Feng, Yirui Zhang, Zhitong Tian, Zhihui Zheng and Hailiang Lu ()
Additional contact information
Yixuan Zhang: State Key Laboratory of Power System Environmental Protection, Wuhan 430072, China
Zoujun Wang: State Grid Hunan Electric Power Company, Changsha 410118, China
Kaiwen Feng: State Grid Changzhou Electric Power Company, Changzhou 213000, China
Yirui Zhang: State Key Laboratory of Power System Environmental Protection, Wuhan 430072, China
Zhitong Tian: State Key Laboratory of Power System Environmental Protection, Wuhan 430072, China
Zhihui Zheng: State Key Laboratory of Power System Environmental Protection, Wuhan 430072, China
Hailiang Lu: State Key Laboratory of Power System Environmental Protection, Wuhan 430072, China

Sustainability, 2024, vol. 16, issue 17, 1-14

Abstract: Transmission tower grounding safety is a critical element that significantly impacts the reliability and sustainability of power grids. Tower grounding resistance is a significant grounding characteristic parameter. In order to accurately measure the grounding resistance of towers using the clamp meter method in both single-tower and multi-tower parallel scenarios, this paper establishes theoretical calculation models for measuring tower grounding resistance using the clamp meter method. Considering the interaction between the artificial grounding device and the tower foundation, this paper models and simulates transmission towers and lightning shield wires, analyzing the influencing factors on the grounding resistance measurement results using the clamp meter method in both single- and multi-tower parallel scenarios. The results show that for single towers, the clamp meter measurement results increase with decreasing foundation root spacing and increasing length of the artificial device’s extension lines, but the changes are relatively small. In multi-tower grounding scenarios, due to the shunting effect of the parallel branches formed by the towers and lightning shield wires, the value is smaller than in single-tower grounding scenarios. Changing the number of parallel towers and the type of lightning shield wire produces little effect on the measurement results. However, changes in soil resistivity have the most significant impact. Therefore, correction formulas for the impact of soil resistivity on clamp meter measurements are proposed and then verified by applying them to field tests.

Keywords: grounding characteristic parameter; clamp meter method; tower foundation grounding device; artificial grounding device; current shunt of towers (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2024
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/2071-1050/16/17/7551/pdf (application/pdf)
https://www.mdpi.com/2071-1050/16/17/7551/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:16:y:2024:i:17:p:7551-:d:1468439

Access Statistics for this article

Sustainability is currently edited by Ms. Alexandra Wu

More articles in Sustainability from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().