Design of a Substation Grounding System for Fast Front Overvoltage


Lee, Kevin Yuan Jet and Ngu, Eng Eng and Mohamad Nor, Normiza (2019) Design of a Substation Grounding System for Fast Front Overvoltage. International Journal of Recent Technology and Engineering, 8 (3S). pp. 20-24. ISSN 2277-3878

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Grounding studies allow an optimized design of grounding system to provide protection for electrical components and personnel at substation. The design of grounding system needs to comply with IEEE Standard 80:2013. Field work is conducted with Fall-of-Potential method and Wenner’s method to perform measurement soil test. Data from measurement test is used to develop two-layer soil model by using Sunde’s graphical method. Calculation for tolerable step voltage and touch voltage are under 50kg body weight condition. Based on the findings, calculated values for tolerable step voltage and touch voltage are higher than calculated values for mesh voltage and touch voltage. The percentage of error is 7% when computed values and calculated values for tolerable voltages are compared. Higher tolerable voltages minimise the risk of getting electrical shock to any individual presents at substation during fault or lightning strike occurs. However, there is limitation in this paper related to software licensing where full simulation with grounding software required full access

Item Type: Article
Uncontrolled Keywords: Electric currents—Grounding, Grounding system, two-layer soil model, step voltage, touch voltage
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK3001-3521 Distribution or transmission of electric power
Divisions: Faculty of Engineering (FOE)
Depositing User: Ms Rosnani Abd Wahab
Date Deposited: 06 Sep 2021 03:04
Last Modified: 06 Sep 2021 03:04


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