Research on the Influence of Stray Current on Grounding Grid and Corresponding Protection

Li, Qi; Li, Shuting; Zhao, Haibo; Song, Xin; Qiu, Jue; Xue, Chao; Li, Wei; Hu, En; Zhai, Shuai

doi:10.1109/ei250167.2020.9346612

Cited by 1 publication

(2 citation statements)

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“…According to (5), the E z is maximum at θ=0rad and 3.14rad and (6) illustrates that E z is maximum at y=0m. These outcomes show the location of the buried grounding conductor when the E z is traversed along the circle C and the line L. The simulations of the above discussion are presented in Fig.…”

Section: Static Electric Field From a Current Carrying Grounding Conductormentioning

confidence: 97%

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Configuration Detection of Grounding Grid: Static Electric Field Based Nondestructive Technique

et al. 2021

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Grounding grid configuration which, is key to its fault diagnosis, changes continuously with the extension in a substation. Furthermore, older substations grounding grid configurations are unknown. Existing literature regarding configuration detection mainly accounts for the magnetic field that required a gradient to locate the grounding conductor.The gradient of raw measurement in the substation vicinity enhances electromagnetic noise and distorts the results. Therefore, in this paper, we have developed a new algorithm, Configuration Detection of Grounding Grid (CDGG) based on the static electric field and the concept of ordered pairs to draw the configuration of the unknown grounding grid. Unlike, the practiced magnetic field, the electric field does not require a gradient. The maximum electric field value indicates the location of a grounding conductor. The connection between nodes is verified by measuring the electric field on the circle. Furthermore, the proposed algorithm also locates any diagonal conductor in the configuration. Mathematical reasoning and simulation results illustrate that our proposed algorithm is feasible to draw the configuration of the unknown grounding grid.

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Section: Static Electric Field From a Current Carrying Grounding Conductormentioning

confidence: 97%

“…The applications of the grounding grid include the protection of underground pipelines against stray currents, computer station, power substations and traction substations, etc. [5], [6].…”

Section: Introductionmentioning

confidence: 99%