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Study on Earth Surface Potential and DC Current Distribution around DC Grounding Electrode
1Planning &evaluation center, Sichuan Power Economic Research Institute, Chengdu, China 2Equipment condition assessment center, Sichuan Electric Power Research Institute, Chengdu, China
1Planning &evaluation center, Sichuan Power Economic Research Institute, Chengdu, China 2Equipment condition assessment center, Sichuan Electric Power Research Institute, Chengdu, China
1Planning &evaluation center, Sichuan Power Economic Research Institute, Chengdu, China 2Equipment condition assessment center, Sichuan Electric Power Research Institute, Chengdu, China
- 1 1Planning &evaluation center, Sichuan Power Economic Research Institute, Chengdu, China 2Equipment condition assessment center, Sichuan Electric Power Research Institute, Chengdu, China
- 2 1Planning &evaluation center, Sichuan Power Economic Research Institute, Chengdu, China 2Equipment condition assessment center, Sichuan Electric Power Research Institute, Chengdu, China
- 3 1Planning &evaluation center, Sichuan Power Economic Research Institute, Chengdu, China 2Equipment condition assessment center, Sichuan Electric Power Research Institute, Chengdu, China
Energy and Power Engineering·Volume 05 (2013)·Pages 792–796·Published 30 June 2013·DOI10.4236/epe.2013.54B152
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Abstract
DC magnetic biasing problem,caused by the DC grounding electrode, threatened the safe operation of AC power grid. In this paper, the characteristics of the soil stratification near DC grounding electrode was researched. The AC-DC interconnected large-scale system model under the monopole operation mode was established. The earth surface potential and DC current distribution in various stations under the different surface thickness was calculated. Some useful conclusions are drawn from the analyzed results.
KeywordsDC Grounding ElectrodeMagnetic BiasingSoil StratificationEarth Surface PotentialDC Current Distribution
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