Relay Schemes and Testing Calculations

TBD 2025 | Lake Mary, FL

Instructor: Patrick Buchanan

Course Credits: 24 CEHs and 24 NETA CTDs – The Power Systems Seminars have been approved by the Florida Board of Professional Engineers for CEHs.

Overview: Relay Schemes and Testing Calculations is developed for Relay Technicians by a Relay Technician. While the seminar is directed toward relay technicians, engineers and technicians from many other disciplines have also taken this seminar. This seminar provides students with in-depth knowledge of how protective relays work when executing testing and commissioning activities.

Trig Functions and Phasor Math

Trig Functions Used for Meter and Relay Calculations
Rectangular vs Polar Forms of Phasors
Phasor Addition, Subtraction, Multiplication and Division

Introduction to Basic Logic Functions

AND Gate and Its Equivalent Circuit
OR Gate and Its Equivalent Circuit
NOT Gate and Its Equivalent Circuit

The Power Triangle

Watts Calculation
VARS Calculation
Line Angle and Power Factor

Discovering Transformers

Polarity of Transformers
Current Transformers
Transformer Phase Shift Compensation
Transformer Differential Relay Tap Calculations

Symmetrical Components

Positive, Negative and Zero Sequence Calculations
Fuse Failure/Loss of Potential Circuits
Forcing Neutral Current
Zero Sequence Detector Circuits
Symmetrical Components during Faults

Protection Schemes

Protection System Overview
Protection System Requirements
IEEE Relay Device Numbers
Overcurrent Protection Coordination and Testing

Differential Protection

Differential Protection Operating Theory
Transformer Differential Testing Calculations
Line Differential Alpha Plane Testing Calculations

Line Protection

Step Distance Protection
Plotting a Mho Circle on an R-X Diagram
Max Torque Angle Testing
Phase-to-Phase, Phase-to-Ground, and 3-Phase Testing Calculations
Directional Ground Overcurrent Testing

Communication Based Line Protection

Communication Based Tripping Schemes
End-to-End Testing Overview
End-to-End Fault Calculations

Time:
Sessions 8 a.m. – 5 p.m.

Contact Information
[email protected]
689-205-9460

NOTE: The Printed Book option consists of a binder with a black and white printed version of the presentation. If you select the Printed Book option you will also have access to an electronic copy of the course curriculum.

Cancellation Policy

In the event you are no longer able to attend the Power Systems Seminar you have enrolled in, you must notify a member of the Qualus University team in writing of your request. You may:

Receive a full refund in the event of a cancellation provided 30 days prior to start of event.
Fewer than 30 days, but more than 10 business days before the class, you may elect to transfer your registration to a future Power Systems seminar or send another individual in your place.
Fewer than 10 business days before the class, we are glad to accommodate transferring your seat in the seminar to another individual.

Cancel

Cancellation Policy

In the event you are no longer able to attend the Power Systems Seminar you have enrolled in, you must notify a member of the Qualus University team in writing of your request. You may:

Receive a full refund in the event of a cancellation provided 30 days prior to start of event.
Fewer than 30 days, but more than 10 business days before the class, you may elect to transfer your registration to a future Power Systems seminar or send another individual in your place.
Fewer than 10 business days before the class, we are glad to accommodate transferring your seat in the seminar to another individual.

Cancel

Power Systems: Relay Schemes & Testing Calculations

TBD 2025 | Lake Mary, FL

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