15EEL77 Rely and High Voltage Laboratory syllabus for EE

Part - A

1 Over Current Relay: (a)Inverse Definite Minimum Time(IDMT)Non-Directional Characteristics (b) Directional Features (c) IDMT Directional.

2 IDMT Characteristics of Over Voltage or Under Voltage Relay (Solid State or Electromechanical type).

3 Operation of Negative Sequence Relay.

Part - B

4  Operating Characteristics of Microprocessor Based (Numeric) Over –Current Relay.

5 Operating Characteristics of Microprocessor Based (Numeric) Distance Relay.

6 Operating Characteristics of Microprocessor Based (Numeric) Over/Under Voltage Relay.

Part - C

7 Generation Protection: Merz Price Scheme.

8 Feeder Protection against Faults.

9 Motor Protection against Faults.

Part - D

10 Spark Over Characteristics of Air subjected to High Voltage AC with Spark Voltage Corrected to Standard Temperature and Pressure for Uniform [as per IS1876: 2005]and Non-uniform [as per IS2071(Part 1) : 1993] Configurations: Sphere – Sphere, Point –Plane, Point – Point and Plane – Plane.

11Spark Over Characteristics of Air subjected to High voltage DC.

12 Measurement of HVAC and HVDC using Standard Spheres as per IS 1876 :2005

13 Measurement of Breakdown Strength of Transformer Oil as per IS 1876 :2005

14 Field Mapping using Electrolytic Tank for any one of the following Models: Cable/ Capacitor/ Transmission Line/ Sphere Gap.

15 (a) Generation of standard lightning impulse voltage and to determine efficiency and energy of impulse generator. (b) To determine 50% probability flashover voltage for air insulation subjected to impulse voltage.

Course outcomes:

At the end of the course the student will be able to:

• Experimentally verify the characteristics of over current, over voltage, under voltage and negative sequence relays both electromagnetic and static type.
• Experimentally verify the characteristics of microprocessor based over current, over voltage, under voltage relays and distance relay.
• Show knowledge of protecting generator, motor and feeders.
• Analyze the spark over characteristics for both uniform and non-uniform configurations using High AC and DC voltages. 
• Measure high AC and DC voltages and breakdown strength of transformer oil.
• Draw electric field and measure the capacitance of different electrode configuration models.
• Show knowledge of generating standard lightning impulse voltage to determine efficiency, energy of impulse generator and 50% probability flashover voltage for air insulation.

Graduate Attributes (As per NBA)

Engineering Knowledge, Problem Analysis, Individual and Team work, Communication.

Conduct of Practical Examination:

1. All laboratory experiments are to be included for practical examination.

2. Breakup of marks and the instructions printed on the cover page of answer script to be strictly adhered by the examiners.

3. Students can pick one experiment from the questions lot prepared by the examiners.

4. Change of experiment is allowed only once and 15% Marks allotted to the procedure part to be made zero.