power system protection course

8/15/2019 Power System Protection Course

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21 CPD(BEM Approved Hours)

Ref: IEM15/SWAK/237/C

Power System Protection Course Co-organized with Sarawak Energy Berhad

Date : 5 – 7 October 2015 (Monday – Wednesday)

Time : 8.00 am – 5.00 pm

Venue : M Hotels, Hock Lee Centre, Kuching

ABOUT THE COURSE

This course attempts to answer the many questions in an electrical engineer’s mind by describing the

various concepts of power system protection. The scope includes all the main components and types of

protection schemes. The course also describes practical protection schemes. This course is intended for

consulting, design, operation and maintenance engineers responsible for medium and high voltage

transmission, distribution, industrial and commercial power systems. Participants are expected to have a

basic knowledge of power system practices.

PROFILE OF SPEAKER

Ir. Lee Chong Kiow, M.Sc. Power System Eng, B.Sc. (Hons) Elect. Eng, P Eng, C Eng, FIEM, MIEE

Ir. Lee Chong Kiow is currently the Director of VI Power, which specializes in providing performing system

studies and technical training of electrical applications. A 1974 Electrical Engineering Student graduate from

Strathclyde University, Glasgow, he has more than forty years of experience in the power engineering

industry. He was previously the engineering manager of Tamco Corporate Holdings Sdn Bhd, which

manufactures indoor-medium and low-voltage switchgear. Prior to that, he spent another five years in a

large consultancy practice and more than 16 years working as a protection engineer in the former National

Electricity Board. He is also a Professional Engineer, Fellow of the Institution of Engineers Malaysia and

Suruhanjaya Tenaga Certified Competent/Services Engineer up to 275kV.

Over the last 15 years, he has trained more than four thousand participants throughout Malaysia, South East

Asia, China, India, Oman and several African countries on Power System Protection, Applications, Operation

& Maintenance of Electrical Equipment, Basic Electricity, Commissioning of Power Transformers, Protectionand Starting of Induction Motors, Medium and Low Voltage Switchgear, Electrical Safety and Electrical

System studies.

The I nstituti on of Engineers, Malaysia (Sarawak Br anch)Ultimate Professional Centre, No 16, 2nd Floor, Jalan Bukit Mata Kuching, 93100 Kuching, Sarawak

Tel: 082-428 506 Fax: 082-243 718 E-mail: [email protected]

mailto:[email protected]:[email protected]:[email protected]:[email protected]


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PROGRAMME – Day 1

8:00 am Registration

9:00 am Theory

An Introduction to Protection

Purpose, principles, requirements and components of protection systems. Zone of protection, unitand non-unit protection, main and backup protection and characteristics of overcurrent-earth fault

relays.

10:30 am Morning Tea Break

11:00 am Theory

Continuation of An Introduction to Protection

Introduction to CTs and VTs. Features of numerical relays. Typical protection schemes for

electrical equipment. Differences between ELCB and RCCB. Testing.

1:00 pm Lunch

2:00 pm Theory

The Grandfather of all Protection

Differences between overload and overcurrent. Overcurrent-earth relay protection schemes –

residual, neutral and ZCT. Typical relays and their settings. Differences between OCEF for 3-wire

and 4-wire systems. Types of IDMT characteristics.

3:30 pm Afternoon Tea Break

3:45 pm Theory

Concept of Differential Protection

Principle of differential protection. Percentage bias and high impedance schemes. Example

of relay settings. Applications for transformers, feeders and busbar protection.

5:00 pm End of Day 1

PROGRAMME – Day 2

8:00 am Theory

Making Sure the Right Relay Operates

Principles and forms of discrimination. Worked example of overcurrent discrimination.


11:00 am Theory

What Happens After a Relay Operates

Analysis of various cases of right and wrong relay operations

Why are There Different Types of System Earthing?

Need for earthing. Types – solid and resistor. Neutral earthing transformer.

1:00 pm Lunch


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2:00 pm Theory

Current & Voltage Transformers

Principle of operation. Metering and protection CTs and VTs. connections


3:45 pm Theory

Protecting Feeders

Overcurrent and pilot wire protection. Use of summation transformers and effect on relay

sensitivity. Effect of pilot wire faults. Pilot wire supervision.

5:00 pm End of Day 2

PROGRAMME – Day 3

8:00 am Theory

Need for Motor Protection

Motor control and protection. Differences between overload and overcurrent Thermal

overload relay - need for cold and hot characteristics. Short-circuit and unbalance protection.

Co-ordination between overload and short-circuit protections.


11:00 am Theory

Protecting Generators

Difference between synchronous and induction generators. Earthing of generators. Problem

of current decrement in the generator fault current. Use of voltage dependent overcurrent

protection. Need for negative phase sequence and field failure protection. .

1:00 pm Lunch

2:00 pm Theory

Transmission System ProtectionImproving reliability and security of protection schemes using AND or OR logic. Protection of

transmission lines. Use of current differential relays and optical fibres. Use of distance relays

- characteristics, zones and permissive tripping. Concept of directional earth fault protection.

Comparison between current differential and distance protection.


3:45 pm Theory

Making Sure Everything Works

Need for testing. Primary and secondary injection tests. Stability tests. Functional and

tripping tests.

5:00 pm End of Course

power system protection course

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