Abstract

There are different safety assessment standards of grounding systems in different countries. Some of standards are widely adopted in the world, such as IEEE-80-2000, IEC-471-1, EA-TS41-24 and BS7354. In order to choose reasonable safety assessment standard in the design of grounding system of substation, these four standards are compared using a practical case. It showed that BS7354 is more conservative than IEEE-80-2000 and EA-TS41-24, and the definitions of allowable current are different between IEEE-80-2000 and IEC-471-1.

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