Course Catalogue.

By the end of this course, you will be able to:

• Convert unbalanced three-phase power systems into symmetrical components for systematic analysis
• Analyze and interpret positive, negative, and zero‑sequence networks and their interactions
• Apply sequence circuit models to identify, analyze, and resolve common power system faults
• Evaluate zero‑sequence circuits to support effective grounding and protection decisions
• Perform fundamental short‑circuit and over‑voltage calculations for practical engineering application

Description

Unbalanced operating conditions, fault scenarios, and grounding decisions are part of everyday power system practice. Yet analyzing these conditions directly in three‑phase systems can be complex, time‑consuming, and prone to error without the right analytical framework. Symmetrical components provide that framework, allowing complex system behaviour to be broken down into structured, manageable elements that support sound technical decisions.

This course builds a practical understanding of symmetrical components and shows how they are used to analyze short circuits, grounding methods, and equipment behaviour in real power systems. You will learn how sequence networks are constructed, how they behave under different fault conditions, and how they are applied across generators, transformers, transmission lines, and loads.

Through worked examples, guided calculations, and applied exercises, you will develop the ability to perform both manual and software‑based short‑circuit studies. The emphasis is on practical interpretation and application, enabling you to confidently analyze system performance, support protection and grounding decisions, and apply symmetrical component theory directly in professional power engineering work.

Who Should Attend

This course is designed for:

• Electrical engineers and engineering technologists working with power systems
• Professionals involved in power system design, protection, control, operations, or maintenance
• Utility, consulting, and industrial practitioners responsible for fault and grounding studies
• Technical professionals seeking a stronger applied understanding of power system analysis
• Senior students and early‑career professionals preparing for power engineering roles
• Utility Engineers and Project Managers involved in electrical infrastructure
• Electrical Engineering Students seeking applied power system knowledge
• Automation, Control, and Renewable Energy Engineers

Course Syllabus

Day I

Fundamental Concepts

Sequence Circuits:

• Direct
• Inverse
• Homopolar

Typical Values of Sequence Impedances for Major Components

Ohm’s Law for Symmetrical Components

Neutral Impedance on the Load Side or Generator Side

Per Unit System

Day II

Equations for all Different Types of Short Circuits:

• Three phases
• Two phases
• Two phases to Ground
• One phase to Ground
• Second Ground Fault

Measurement of Symmetrical Components

Day III

Application to Electrical Machines

Application to Arc Flash Studies

Application to Grounding: Comparison among all Short Circuit cases for:

• Isolated systems
• Neutral to Ground through Impedance

• High resistance
• Low resistance
• Reactor
• Peterson coil

• Neutral directly to Ground

Typical Values of:

• Generator’s reactance
• Time constant
• Electromotive forces

Short Circuit Current Instant Values

• Sub-transient
• Transient
• Permanent

Day IV

Solving Cases

Short Circuit Calculation Step-By-Step Process for:

• Networks with one source or generator
• Networks with multiple sources or generators
• Based on absolute impedances
• Based on per-unit system