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EEN525-1EES: Advanced Power System

Name: (Surname, Given Name M.I.)

u en um er:

Scholarship:

12/9/2013EEN525-1EES Dams

Martires 1

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EEN525: Advanced PowerSystem

University of the East CaloocanCollege of Engineering

Electrical Engineering Department

Engr. Damer L. Martires, REE


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Computation of Grade

PG = 30% Quiz + 60% Prelim Exam +10% Class Standing

Class Standing = Assignments, Seat works, Recitation

TMG = 30% Quiz + 60% Midterm Exam + 10% Class Standing

MG = (2*TMG + PG)/3

TFG = 25% Quiz + 50% Final Exam + 5% Attendance + 20% Class

Standing

FG = (2*TFG + MG)/3


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GENERATION

TRANSMISSION

OVERHEAD DRISTRIBUTION

DELIVERY

SUBSTATIONSUB-TRANSMISSION

DISTRIB. SUBST

O.H SOURCE

CONNECTION

O.H CONNECTIONU.G SOURCE CONNECTION12/9/2013 EEN525-1EES Dams Martires 4

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Generation Plant

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Transmission Lines


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Delivery Point Substation12/9/2013 EEN525-1EES Dams Martires 7

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THE SUB-TRANSMISSION LINE


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SECONDARY WIRE


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OVERHEAD (OH)

DISTRIBUTION LINE

12/9/2013

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DESIGN PROBLEM

To design the electrical power distribution system of a certain town

of your own choice with the following conditions:

I. Design the secondary distribution system.

A. Show on the distribution map of the following:

1. Location of the prospective customers.2. The location of the distribution poles so that all the prospective

customers will be served.

3. The service wires from the poles to the customers house.

4. The route of the secondary lines serving each group customers.

5. The location of multiple street lights.


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DESIGN PROBLEMB. Determine the capacity and the location of the distribution

transformer required to serve the different groups of customers

including the street lights within the area. In the design, indicate the

location and the rating of the transformers.

. e erm ne e w res o e a equa e curren carry ng capac y.

1. Conductors should have adequate current carrying capacity.

2. Voltage drop shall be between 3% and 5% of the secondary

distribution system voltage. Its voltage drop should be adequate up

to the load of each branch of the secondary lines.


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DESIGN PROBLEMII. Design the primary distribution system.

A. Determine the area of the primary distribution wires to be used.

1. Size should be determined not only for adequate current

carrying capacity but also for the voltage drop. The voltage drop

from the power plant to the primary distribution line should not

.

2. Apply the AC drop factor method for the specified section of the

primary line similar to the secondary line voltage drop

calculation.

B. Show on the distribution map of the route of the primary

distribution system indicating the sizes of the primary wires used

and whether primary line are single phase or three phase.


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DESIGN PROBLEMC. On a separate sheet, draw the schematic one line diagram of the

primary distribution system from the power house to all distribution

transformer showing:

1. Number, sizes and length of wires.

2. Indicating in which phase each distribution transformer is

connected. Prepare load schedule of the system.

3. Show the isolating disconnect switches wherever they areconnected.

III. Design the transformer vault of the industrial customer requiring an

indoor type substation and whose service is to be metered in thesecondary side of the transformer bank, consisting of three single

phase transformer.


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DESIGN PROBLEM

A. Determine the size or rating of the following equipment which may

be required.

1. Primary power cable and power conduits, if the underground

service entrance is used.

2. Primary distribution line type lighting arrester.

3. Primary porcelain fuse cut outs or fuse disconnected switch.

4. Potential and current transformer for metering.5. Single phase, 60 Hz distribution transformer.

6. Single line bar, etc.


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DESIGN PROBLEMB. Draw the electrical layouts and schematic diagram of the transformer

vault showing all electrical equipment properly labeled.

1. The distribution of the transformer vault shall conform with all the

requirements of the PEC.

2. The electrical layout shall be a working drawing showing at least,

three views, a plan and two sections.


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DESIGN PROBLEM

IV. Design the outdoor substation of an industrial customer whose

service is to be metered of the primary side of the transformer bank.

At the other place in the town locate on their industrial customer

whose power requirements are as follows:

230 volts Lighting Load 100 kW

Demand Factor for Lighting 80%

230 volts, three phase load 650 kWDemand Factor for Motor 70%

Diversity Factor for Motor 125%

Average Power Factor 85%

The customer will be given primary service to this outdoor type

industrial substation. The service will be metered on the primary side of

the transformer bank consisting of the three single phase transformer.


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DESIGN PROBLEM

A. Determine the sizes or a rating of the following electrical equipment

which may be needed.

1. Primary distribution type lighting arrester.

2. Primary wires.

3. Primary porcelain fuse cut-outs or fuse disconnecting switches.

4. Potential and current transformer for metering.

5. Single phase transformer.6. Secondary loads to the transformer.

B. Draw the structure and connection diagram of substation showing

the equipment and materials needed.


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DESIGN PROBLEMV. Determine the number and capacity of the generating equipment

required.

A. Determine and draw the load graphs of the different classes of loads

to be served.

B. Draw the load graph of the whole system. The load graph shall be

the basis for determining the number and sizes of the generating

units. Designate one standby unit for emergency operation.

C. Specify the standard specification of the generator, exciter and

diesel prime mover.


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DESIGN PROBLEMD. Determine the different factors to be used for generators capacity

calculation of the plant as:

1. Demand Factor2. Diversity Factor

3. Load Factor

.

5. Plant Factor

E. Provide load schedule of balance loading based on the KVA of each

block.

1. kW is the maximum power load demand of each block.

2. kVA is the standard rating of a 3-phase transformer of each

block.


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DESIGN PROBLEMVI. Design the switchboard for the electrical system.

A. Draw the schematic single line diagram from the generator to the

feeder or feeders.

B. Draw the schematic three-line diagram.

C. Draw the front view of the switchboard showing the necessary

meters, instruments, controls, and transfer switches and other

necessary equipment.

D. Show the power layout showing the generating unit and other

important equipment in plant operations.


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SURVEY OF LOAD

1. Residential

* Lighting Load and Small Appliance Load (LLSAL)

* General Power Service (GPS)

.

b. Type B

c. Type C

d. Type D

e. Type E


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SURVEY OF LOAD


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SURVEY OF LOAD

2. Commercial


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SURVEY OF LOAD

3. Industrial


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Design of Secondary Distribution

System

Design Constraints

Minimum of 20 blocks

Minimum of 20 poles per block

Maximum of 3 poles with no load/PER BLOCK

Difference in kVA-Span < 1.0


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System


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System


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System


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System


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System


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System


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System


Een 525n Pt3

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