7/29/2019 EECE112E

1/4

EECE 112E POWER SYSTEM PROTECTION and SWITCHGEAR (3)

EVERY SPRING TERM (ELECTIVE)

Catalog Description:

3 credits. Current and voltage transformers and protection. Relays. Circuits breakers andfuses. Data transmission. Project.

Prerequisites: EECE 470 Electric Machinery

Textbooks:

1) Power system relaying. Horowitz & Phadke. (2nd ed.) J. Wiley, 1995.

2) High Voltage Engineering and Testing. Ryan (2nd ed.) I.E.E. (UK) 2001.

Course Objective:

This course introduces the basic theory, construction, usage of current and voltagetransformers, relays (electro-mechanical, solid state, numeric),and circuit breakers . This

course introduces the protection systems used for electric machines, transformers, bus-bars,

overhead and underground lines, and for over- voltages. Data transmission using power

system or other communications systems.

Objectives:

To introduce students to power system protection and switchgear.

To teach students theory and applications of the main components used in power

system protection. To teach students the protection systems used for electric machines, transformers, bus

bars, overhead and underground feeders.

To teach students the theory, construction, and applications of main types circuit

breakers.

To develop in students an ability and skill to design the feasible protection systems

needed for each main part of a power system.

To enhance students knowledge of over- voltage protection and data transmission.

To cultivate students spirit of teamwork, analysis of problems, and synthesis of

optimal design for protection systems. (Students work in teams chosen by the

instructor of the course to foster interaction skills and communication).

Topics covered:

Current and voltage transformer theories, construction, and applications.

Electro-mechanical relays: attracted armature, induction, thermal, permanent-magnet

moving coil, theories, constructions, and applications.

Solid state relays: timers, level detectors, amplitude and phase comparators theory and

applications.

Numeric relays: components, circuits, applications. Analogue to digital converter

(ADC), digital to analogue converter (DAC), memories.

7/29/2019 EECE112E

2/4

Protection systems for electric machines, transformers, bus bars, overhead and

underground transmission lines.

Over- voltage protection system.

Data Transmission.

Design project for protection systems to one of the main elements of a power system.

Circuit breakers (oil, air, SF6, Vacuum) : construction, theory of operation, andapplications.

Learning out-comes:

Outcome 1: Students are knowledgeable in the field of power system protection, and circuit

breakers.

Outcome 2: Students are knowledgeable in the field of instrument transformers.

Outcome 3: Students are knowledgeable in the field of relays.

Outcome 4: Students will demonstrate and ability to design the relevant protection systems

for the main elements of a power system.

Outcome 5: Students are knowledgeable in the field of switchgear.

Outcome 6: Students are knowledgeable in the field of over- voltage protection and data

transmission.

Outcome 7: Students will demonstrate an ability to participate in professional

multidisciplinary teams.

Assessment:

Tests: Quiz I (20%), Quiz II (20%), Final (45%)

Homeworks and project (15%)

Portfolio:

Quizzes, Final Exam, Project and Homeworks.

7/29/2019 EECE112E

3/4

FACULTY OF ENGINEERING AND ARCHITECTURE

DEPARTMENT OF ELECTRICAL & COMPUTER ENGINEERING

EECE 789/EECE 112E - POWER SYSTEM PROTECTION AND SWITCHGEAR

CLASS ROOM (BECHTEL BLDG.-ROOM 405)

LECTURES: T, Th: 9:30-10:45

1. Current Transformers:

1.1. Theory

1.2. Transformation and phase angle ratios, and errors

1.3. Construction

1.4. Open-Circuited secondary voltages

2. Voltage Transformers:

2.1. Theory of Electromagnetic & Capacitor Types

2.2. Construction

2.3. Errors

3. Relays:

3.1 Electromechanical Relays: Attracted armature, Induction, Thermal,

Permanent-magnet moving Coil

3.2. Solid State Relays: Timer R-C, Level Detectors, Amplitude & PhaseComparators

3.3. Numeric Relays

4. Protection Systems:

4.1. Unit Protection

4.2. Generator Protection

4.3. Transformer "

4.4. Bus-bar "

4.5. Feeder "4.6. Over voltages "

5. Circuit Breakers :

5.1. Arc Theory

5.2. Oil circuit Breaker

5.3. Air blast circuit Breaker

5.4. SF6 circuit Breaker

5.5. Vacuum circuit Breaker.

7/29/2019 EECE112E

4/4

6. Projects.

References:

1. Power System Protection Vols. 1-4. The Electricity Council, 1995.

2. Power Circuit Breaker, Theory and Design Edited by Flurscheim. 2nd

Ed.

3. Protective Relays. Application Guide 3rd Ed. G.E.C. (U.K.).

4. Protection of Industrial Power Systems, 2nd

Ed. T. Davies, Pergamon, 1996.

5. Power System Relaying, Horowitz & Phadke, 2nd Ed., Wiley. 1995.

Quiz I Quiz II Project Final

% of Course Grade 20 20 15 45

January 2004 / HC