Power System Neutral Grounding Fundamentals

In Power System Neutral Grounding Fundamentals, you'll learn ...

• Fundamental considerations for any form of grounding
• Hazards of repetitive restriking
• Basic theory of arcing ground faults
• Definition of ‘effective grounding’

Overview

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Credit: 3 CPD

Length: 21 pages

One of the most critical decisions faced by the designer of a power system is how the neutral of the system should be grounded.

This course presents the subject of neutral grounding in a very structured fashion. First, a simple equivalent circuit is developed for a generic power system, and then each of the options for neutral grounding is ‘tested’ in that equivalent circuit to identify and understand the characteristics of the grounding method. A detailed explanation is offered for each of the following options: Ungrounded neutral; Solidly grounded neutral; Low resistance grounded neutral; High resistance grounded neutral; Low inductance grounded neutral; High inductance (resonant) grounded neutral.

Learning Objectives

Upon completion of this course, participants will be able to:

• Explain fundamental considerations for any form of grounding.
• Describe the hazards of repetitive restriking.
• Explain basic theory of arcing ground faults.
• Define "effective grounding".
• Explain the impact of the grounding method on step- and reach-potentials.
• Design the criteria for high-resistance grounding.
• Describe the limitations of high-resistance grounding.
• Explain the impact of grounding on cable selection.
• Describe the ideal short-circuit stiffness based on total loading.
• Explain application limitations of reactance grounding.
• Describe special considerations for Peterson coil grounding.
• Distinguish between system neutral grounding and bonding.

Certificate of Completion

You will be able to immediately print a certificate of completion after passing a multiple-choice quiz consisting of 25 questions. CPD credits are not awarded until the course is completed and quiz is passed.