Calculation method for harmonic impedance of traction substation grounding grid

Zhou, Lijun; Chen, Ying; He, Zhiyuan; Qipei, Qiu; He, Jiangbiao; Yuan, Lei

doi:10.1109/powercon.2016.7753977

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Figura 13 Potencial De Contacto En El Estado Actual Etap Fuente: Elaboración Propia1

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2019

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“…Los armónicos medidos también afectan debido que a medida que aumenta la frecuencia, aumenta el módulo de impedancia de puesta a tierra [7], por lo que se propone una malla de puesta a tierra al trasformador.…”

Section: Figura 13 Potencial De Contacto En El Estado Actual Etap Fuente: Elaboración Propiaunclassified

Diseño de reingeniería del sistema de puesta a tierra de un transformador de 300 KVA

Cruz

Martínez-Rodríguez

Garrido

et al. 2019

JTEN

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Re-engineering design of grounding system (GS) is presented of a 300 KVA transformer from the Universidad Veracruzana, as a background measurements were made to transformer with an power quality analyzer, from the measured and analyzed data high values were detected of harmonics in the neutral, we deduce that the problem is in the GS, to verify the above, measurements were made with a grounding electrode tester, obtaining high resistance in the rods of GS, this value fail with respect to norm NOM -001-SEDE-2012, also, the contact and step potentials were simulated with the help of ETAP Software showing a dangerous potential difference for the human being, a methodology is proposed for the design and re-engineering of SG of the transformer through actual system analysis, calculations and simulations using ETAP software, obtaining values that comply with the normative and most importantly that provide security to people and equipment’s.

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Section: Figura 13 Potencial De Contacto En El Estado Actual Etap Fuente: Elaboración Propiaunclassified