Faults and Sequence Networks: The Roots of Protection and Relay Decision-Making

Service Description

Starts Sunday January 25, 2026 • 8:00 AM EST
CAD 220
Online (Live)

This live, four-hour training establishes the deep foundation every protection engineer needs before advancing to complex relay, protection, and IBR-interaction topics. Designed for engineers, technologists, and students, the course explains how faults behave in real power systems and how sequence networks form the backbone of all protection logic.

Through clear step-by-step reasoning and practical examples, participants will learn how to construct sequence networks, calculate fault currents, and interpret phase behaviour during balanced and unbalanced faults. The course connects theory directly to relay operation—helping participants understand event records, identify fault signatures, and interpret why relays operate the way they do.
This fundamental knowledge is essential before moving toward advanced protection modules and IBR-related protection challenges.

Topics Covered:
• Three-phase system fundamentals and fault behaviour
• Positive, negative, and zero-sequence quantities
• Building sequence networks for various fault types
• Balanced and unbalanced fault current calculations
• Interpreting Z₁, Z₂, and Z₀ in fault performance
• Phase reconstruction and relay-measured quantities
• Event record interpretation and relay behaviour during faults

By the end of the course, participants will be able to:
• Explain positive, negative, and zero-sequence components and assemble sequence networks
• Calculate symmetrical and asymmetrical fault currents using sequence methods
• Interpret how Z₁, Z₂, and Z₀ affect system response
• Reconstruct phase voltages/currents from sequence components and relate them to relay logic
• Analyze relay operation during various fault conditions
• Interpret voltage and current waveforms in event records and investigate real faults using sequence reasoning

By the end of the course, participants will have the analytical foundation needed for confident protection design, relay setting interpretation, and fault investigation.

Additional Information: 

• All participants will receive digital course materials, which may include slide decks, reference guides, toolkits, and access to the session recording.

• Upon successful completion, you will earn the ElectroMentors Certificate of Completion.

• ElectroMentors is an approved provider of IEEE CEU/PDH certificates. Should you wish to receive it, it is available as an optional add-on during checkout.

• This course may be eligible for Professional Development Hours (PDHs) with engineering regulatory bodies such as EGBC, APEGA, PEO, Engineers Nova Scotia, and other similar organizations across Canada. Participants are responsible for ensuring the course content is relevant to their area of professional practice and for retaining proof of completion for audit purposes.

• ElectroMentors is an approved provider of IEEE CEU/PDH Certificates. If you wish to obtain a certificate directly from IEEE, please add it to your checkout via [this link].

• Please note that all purchases are final. By registering and attending the course, you agree to ElectroMentors’ Terms and Conditions, including our rescheduling, cancellation, and refund policies. [Terms & Conditions].