# Transmission and Distribution of Electrical Energy-2 Syllabus Diploma in Electrical Engineering, Regulation 2010, Short Suggestion, Exam Dates, Exam Routine, Question Out, Book list with code

To provide the student with an opportunity to acquire knowledge, skills and attitude in the area of transmission and distribution of electrical energy with special emphasis on :

• Performance calculation of medium and long transmission line.
• DC and AC distribution system.
• Diagnosing faults of transmission and distribution line and measures for repair.
• Underground cable.

SHORT DESCRIPTION

Medium and long transmission line; High Voltage DC transmission; DC distribution system; AC distribution system; Underground cables; Laying & jointing of underground cables; Insulation resistance and dielectric stress of UG cables; Capacitance in underground cables; Cable faults localization; Operation and maintenance of distribution line; Insulation resistance measurement; Grid system.

DETAIL DESCRIPTION

Theory:

MEDIUM AND LONG TRANSMISSION

• 1 Understand the effect of line constants of medium transmission line.
• 1 Describe the effect of line constants of medium transmission line.
• 2 Express the equation for sending end voltage and current by end-            condenser method, nominal T method and nominal π method for medium              transmission line.
• 3 Draw the phasor diagrams of end-condenser method, nominal T method              and nominal π method for medium transmission line.
• 4 Solve problems on end-condenser method, nominal T method and               nominal π method for medium transmission line.
• 2 Understand the effect of line constants of long transmission line.
• 1 Describe the effects of line constants of long transmission.
• 2 Analyze long transmission line (Rigorous method of solution).

2.3       Solve problems related to long transmission.

2.4       Prepare the list of Application of rigorous method in long transmission                          line.

DC TRANSMISSION SYSTEM

• 3 Understand the high voltage DC transmission.

3.1       Describe the high voltage DC transmission system.

3.2       State the limitations of AC transmission.

3.3       Discuss the economic comparison between AC and DC transmission              system.

3.4       List the advantages of HVDC.

3.5       List the disadvantages of HVDC.

3.7       List the fields of application of HVDC.

DC DISTRIBUTION SYSTEM

• 4 Understand the DC distribution system.

4.1       Describe the classification of distribution system.

4.2       Describe DC distribution.

4.3       List different types of distributors.

4.5       Describe DC distributor fed at one end.

4.6       Describe DC distributor fed at both ends.

4.8       Describe ring distributor.

4.9       Solve problems on different types of distribution system.

AC DISTRIBUTION SYSTEM

• 5 Understand the AC distribution system.

5.1       List different types of AC distribution system.

5.2       Express the equation for sending end voltage of AC distributors.

5.3       Solve problems on sending end voltage of AC distributor.

5.4       Explain the methods employed for the solution of network problem of interconnected system.

5.5       Solve problems on 3-ϕ, 4 wire, Y- connected unbalanced loads.

UNDERGROUND CABLES

• 6 Understand the construction, insulating materials and types of underground cables.

6.1       Define underground cables.

6.2       List the advantages of underground cables.

6.3       List different types of underground cables.

6.4       List the insulating materials used in underground cables.

6.5       Describe the construction of low, high and super high voltage single phase and three phase underground cables.

6.6       Explain the insulating materials for cables.

6.7       List the properties of insulating materials for cables.

6.8       Describe the measurement of insulation resistance of cable.

6.9       Identify different sizes of cable.

6.10     List the causes of failure of underground cable.

6.11     Describe aerial cables and submarine cables.

• 7 Understand the laying and jointing of underground cable

7.1       Explain different methods of underground cable laying.

7.2       Explain the method of terminating underground cables.

7.3       Describe the heat shrink type and cold shrink type of cables jointing.

7.4       Describe care and protection to be taken while doing jointing and terminating the cables.

• 8 Understand the insulation resistance and dielectric stress in a single core cable and three core cable
• 1 Describe the insulating resistance of single core cable.
• 2 Express the equation for insulation resistance of single core cable.
• 3 Solve problems on insulation resistance in single core cable.
• 4 Deduce the equation for dielectric stress in a single core cable.
• 5 Solve problems on dielectric stress in a single core cable.
• 6 Describe the insulation resistance of a three core cable.
• 7 Express the equation for insulation resistance of three core cable.
• 8 Solve problems on insulation resistance of three core cable.
• 9 Express the equation for dielectric stress in a three core cable.
• 10 Solve problems on dielectric stress in a three core cable.

• 9 Understand the concept of capacitance in underground cable.
• 1 Describe the capacitance of single core cable.
• 2 Express the equation for capacitance of single core cable.
• 3 Solve problems on capacitance of single core cables.
• 4 Describe the capacitance of a three core underground cable.
• 5 Express the equation for the capacitance of three core cable.
• 6 Solve problems on capacitance of three core cable.
• 7 Describe the grading of cables.
• 8 Deduce the equation of grading of cables.
• 9 Solve problems on grading of cables of a single core cable.
• 10 Understand the cable faults and their localization.
• 1 List different types of cable faults.
• 2 Explain the causes of cable faults.
• 3 Describe different methods of locating cable faults.
• 4 Express the equation for locating the faults by Blavier test.
• 5 Express the equation for locating faults by Murray Loop test and Varley Loop test.
• 6 Solve problems on locating faults of cable.

OPERATION AND MAINTENANCE OF DISTRIBUTION SYSTEM

• 11 Understand the operation of distribution line.
• 1 Sketch the circuit diagram of the distribution system.
• 2 Explain the operation of panel board of transmission system.
• 3 Describe load dispatch centre (LDC).
• 4 Explain the operation of a distribution system.

• 12 Understand the features of maintenance work of distribution line.
• 1 Identify the damage and faults in the distribution line during routine (weekly/monthly) inspection or at the time of emergency.
• 2 Describe the procedure of repairing the damage and faults in the line.
• 3 Find the causes for damage and faults occured.
• 4 Prepare the list of tools and materials for the repair work.
• 5 Discuss the function of personal protective equipment used for repair and maintenance of distribution line.

• 13 Understand the methods of measuring insulation resistance of the system when power is on.
• 1 Describe in brief the method of measuring the insulation resistance             of the system when the power in ON.
• 2 Express the deduction of the equation for measuring the insulation              resistance of the system when the power is ON.
• 3 Solve problems on measuring insulation resistance when power is             ON.
• 4 Discuss the safety procedures for measuring insulation resistance             of the line when power is ON.

GRID SYSTEM

• 14 Understand the grid system.
• 1 Describe grid system.
• 2 Explain in brief the necessity of grid system.
• 3 List different types of grid system.
• 4 Identify the advantages of grid system.
• 5 Outline the grid system of Bangladesh.
• 6 Outline the grid system of some advance countries.

Practical:

• 1 Perform the layout diagram of panel board.
• 1 Sketch the layout of panel board.
• 2 Identify different sections of the panel board.
• 3 Prepare a list of equipment and instruments of panel board with specification.
• 2 Measure the insulation resistance of cables by megger.
• 1 Select appropriate range of the instrument.
• 2 Perform the experiment to measure the insulation resistance of low tension cables.
• 3 Measure the insulation resistance of high tension cables by megger.
• 1 Select the appropriate instrument.
• 2 Perform the experiment to measure the insulation resistance of high tension cables.
• 4 Draw the cross sectional view of different types of underground cable.
• 1 Study the cross section of underground cable.
• 2 Draw the cross sectional views of different types of underground cables.
• 5 Locate ground fault by Murray loop test for underground cable.
• 1 Draw the circuit diagram of Murray loop test for ground fault.

• 2 Select appropriate instrument range.
• 3 Perform experiment to locate the ground fault.
• 6 Locate the underground cables short circuit fault by Murray loop test.
• 1 Draw the circuit diagram of Murray loop test for short circuit fault.
• 2 Select appropriate instrument.
• 3 Perform experiment to locate the short circuit fault.
• 7 Perform the experiment to measure the insulation resistance of the system when power in ON.
• 1 Draw the circuit diagram for the experiment.
• 2 Select the instrument and instrument range.
• 3 Perform experiment to measure the insulation resistance.
• 4 Calculate insulation resistance from the data.
• 8 Perform the experiment to locate the underground cable ground fault by Varley loop test.
• 1 Sketch the diagram of Varley loop test for ground fault.
• 2 Select appropriate instrument range.
• 3 Locate the ground fault by experiment.