Variable Load Calculations

8/13/2019 Variable Load Calculations

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Variable Load Calculations

wattage of appliances: http://energy.gov/energysaver/articles/estimating-appliance-and-home-electronic-energy-use

CLASS A HOUSES (35)

Appliances No. of

Unit

Wattage Total

Wattage

No. of Hours

Used

Electric

Consumption

Laptop 3 50 150 5 750

Computer 1 120 120 4 480

Refrigerator 1 725 725 24 17,400

LED/LCD TV 3 120 360 3 1,080

Rice Cooker 2 1,000 2,000 2 4,000

Oven Toaster 1 1,225 1,225 0.5 612.50

Clothes Iron 1 1,800 1800 2 3,600

Air Conditioner 3 1,100 3,300 7 23,100

Electric Stove 1 2,500 2,500 3 7,500

Radio (Stereo) 3 400 1,200 1 1,200

Washing Machine 1 500 500 2 1,000

Wireless Phone 5 15 75 4 300

Fan 5 250 1,250 3 3,750

Vacuum Cleaner 1 1,440 1,440 2 2,880

Water Pump 1 1,100 1,100 1 1,100

Fluorescent Light 15 40 600 14 8,400

Dim light 5 20 100 3 300

TOTAL: 77,452.50

CLASS B HOUSES (40)

Appliances No. of

Unit

Wattage Total

Wattage

No. of Hours

Used

Electric

Consumption

Laptop 2 50 100 6 600

Computer 1 120 120 6 720

Refrigerator 1 725 725 24 17,400

LED/LCD TV 2 120 240 3 720

Rice Cooker 2 1,000 2,000 2 4,000

Fan 5 250 1,250 11 13,750

Clothes Iron 1 1,800 1800 2 3,600

Radio (Stereo) 3 400 1,200 3 3,600

Washing Machine 1 500 500 3 1,500



Dim light 10 20 200 20 4,000

TOTAL: 57,550


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CLASS C HOUSES (98)

Appliances No. ofUnit

Wattage TotalWattage

No. of HoursUsed

ElectricConsumption

Radio (Stereo) 3 400 1,200 1 1,200

Refrigerator 1 725 725 24 17,400

LED/LCD TV 2 120 240 3 720

Fan 5 250 1,250 3 3,750


Dim light 2 20 40 3 120

TOTAL: 28,230

CHURCH (10)

Appliances No. of

Unit

Wattage Total

Wattage

No. of Hours

Used

Electric

Consumption

Laptop 3 50 150 3 450

Computer 3 120 360 5 1,800

Fan 20 250 5,000 2 10,000

LED/LCD TV 3 120 360 1 360

Radio (Stereo) 3 400 1,200 2 2.400


Organ 1 350 350 2 700

Landline 3 15 45 1 45

Air conditioner 5 1,000 5,000 4 20,000

Water Pump 1 1,100 2,880 3 8,640

Vacuum Cleaner 2 1,440 2,880 3 8,640

Fluorescent Light 40 40 1,600 2 3,200

Dim light 5 20 100 2 200

TOTAL: 48,940


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OFFICE (25)

Appliances No. of

Unit

Wattage Total

Wattage

No. of Hours

Used

Electric

Consumption

Pump 1 725 725 4 2,900

Computer 15 120 1,800 9 16,200Fan 10 250 2,500 8 20,000

Vacuum Cleaner 2 1,440 2,880 2 5,760

Air conditioner 4 1000 4,000 8 32,000

Water Dispenser 5 500 2,500 9 22,500



TOTAL: 110,460

STORE (15)

Appliances No. of

Unit

Wattage Total

Wattage

No. of Hours

Used

Electric

Consumption

Fan 3 250 750 8 6,000

Computer 2 120 240 8 1,920

Radio (Stereo) 1 400 400 4 1,600

Water Dispenser 1 500 500 8 4,000Air conditioner 1 1000 1,000 8 8,000



TOTAL: 23,365


4/15

WET and DRY MARKET (6)

Appliances No. of

Unit

Wattage Total

Wattage

No. of Hours

Used

Electric

Consumption

Fan 10 250 2,500 8 20,000Radio (Stereo) 5 400 2,000 3 6,000

Digital Weight Scale 10 0.25 2.50 8 20

Meat Grinder 5 350 1,750 3 5,250

Refrigerator 8 725 5,800 8 46,400


TOTAL: 82,470

SCHOOL (15)

Appliances No. of

Unit

Wattage Total

Wattage

No. of Hours

Used

Electric

Consumption

Fan 30 250 7,500 8 60,000

Radio (Stereo) 2 400 800 2 1,600

Air conditioner 3 1,000 3,000 4 12,000

Water Dispenser 3 500 1,500 8 12,000

LED/LCD TV 3 120 360 3 1,080

Pump 1 725 725 1 725

Computer 10 120 1,200 5 6,000


TOTAL: 106,205


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VARIATION:

Variation of Household 1:

TIME VARIATION CLASS A CLASS B TOTAL12MN-2AM 1 0.39 0.33 0.72

2AM-4AM 1 0.39 0.33 0.72

4AM-6AM 2 0.77 0.66 1.43

6AM-8AM 6 2.32 1.97 4.29

8AM-10AM 3 1.16 0.99 2.15

10AM-12NN 6 2.32 1.97 4.29

12NN-2PM 6 2.32 1.97 4.29

2PM-4PM 4 1.55 1.31 2.86

4PM-6PM 5 1.94 1.64 3.58

6PM-8PM 7 2.71 2.30 5.01

8PM-10PM 5 1.94 1.64 3.58

10PM-12MN 2 0.77 0.66 1.43

Variation of Household 2 and Office

TIME VARIATION CLASS C VARIATION OFFICE

12MN-2AM 1 0.40 1 0.39

2AM-4AM 1 0.40 1 0.39

4AM-6AM 2 0.79 2 0.796AM-8AM 6 2.37 3 1.18

8AM-10AM 3 1.19 4 1.58

10AM-12NN 6 2.37 5 1.97

12NN-2PM 6 2.37 7 2.76

2PM-4PM 4 1.58 5 1.97

4PM-6PM 5 1.98 6 2.37

6PM-8PM 7 2.77 6 2.37

8PM-10PM 5 1.98 5 1.97

10PM-12MN 2 0.79 2 0.79


6/15

Variation of Church and Store:

TIME VARIATION CHURCH VARIATION STORE

12MN-2AM 1 0.07 1 0.05

2AM-4AM 1 0.07 1 0.05

4AM-6AM 5 0.35 2 0.10

6AM-8AM 5 0.35 3 0.15

8AM-10AM 4 0.28 4 0.20

10AM-12NN 4 0.28 5 0.25

12NN-2PM 4 0.28 5 0.25

2PM-4PM 3 0.21 6 0.30

4PM-6PM 6 0.42 5 0.25

6PM-8PM 7 0.49 7 0.35

8PM-10PM 2 0.14 4 0.20

10PM-12MN 2 0.14 2 0.10

Variation of Wet and dry Market and School

TIME VARIATION WET and DRY

MARKET

VARIATION SCHOOL

12MN-2AM 1 0.07 1 0.23

2AM-4AM 2 0.14 1 0.23

4AM-6AM 3 0.21 2 0.45

6AM-8AM 3 0.21 3 0.688AM-10AM 4 0.28 3 0.68

10AM-12NN 5 0.35 4 0.91

12NN-2PM 2 0.14 7 1.59

2PM-4PM 2 0.14 6 1.36

4PM-6PM 6 0.42 5 1.14

6PM-8PM 7 0.49 5 1.14

8PM-10PM 2 0.14 2 0.45

10PM-12MN 1 0.07 1 0.23


7/15

Time table of Substation 1:

SUBSTATION 1

TIME TABLE HOUSEHOLD

1

CHURCH WET and DRY

MARKET

STORE

12MN 0.7157 0.0700 0.0700 0.0500

1AM 0.7157 0.0700 0.1050 0.0500

2AM 0.7157 0.0700 0.1400 0.0500

3AM 1.0736 0.2100 0.1750 0.0750

4AM 1.4314 0.3500 0.2100 0.1000

5AM 2.8629 0.3500 0.2100 0.1250

6AM 4.2943 0.3500 0.2100 0.15007AM 3.2207 0.3150 0.2450 0.1750

8AM 2.1471 0.2800 0.2800 0.2000

9AM 3.2207 0.2800 0.3150 0.2250

10AM 4.2943 0.2800 0.3500 0.2500

11PM 4.2943 0.2800 0.2450 0.2500

12NN 4.2943 0.2800 0.1400 0.2500

1PM 3.5786 0.2450 0.1400 0.2750

2PM 2.8629 0.2100 0.1400 0.3000

3PM 3.2207 0.3150 0.2800 0.2750

4PM 3.5786 0.4200 0.4200 0.2500

5M 4.2943 0.4550 0.4550 0.30006PM 5.0100 0.4900 0.4900 0.3500

7PM 4.2943 0.3150 0.3150 0.2750

8PM 3.5786 0.1400 0.1400 0.2000

9PM 2.5050 0.1400 0.1050 0.1500

10PM 1.4314 0.1400 0.0700 0.1000

11PM 1.0736 0.1050 0.0700 0.0750

12MN 0.7157 0.0700 0.0700 0.0500


8/15

Time table of Substation 2:

SUBSTATION 2

TIME TABLE HOUSEHOLD

2

OFFICE SCHOOL

12MN 0.3957 0.3943 0.2271

1AM 0.3957 0.3943 0.2271

2AM 0.3957 0.3943 0.2271

3AM 0.5936 0.5914 0.3407

4AM 0.7914 0.7886 0.4543

5AM 1.5829 0.9857 0.5679

6AM 2.3743 1.1829 0.68147AM 1.7807 1.3800 0.6814

8AM 1.1871 1.5771 0.6814

9AM 1.7807 1.7743 0.7950

10AM 2.3743 1.9714 0.9086

11PM 2.3743 2.3657 1.2493

12NN 2.3743 2.7600 1.5900

1PM 1.9786 2.3657 1.4764

2PM 1.5829 1.9714 1.3629

3PM 1.7807 2.1686 1.2493

4PM 1.9786 2.3657 1.1357

5M 2.3743 2.3657 1.13576PM 2.7700 2.3657 1.1357

7PM 2.3743 2.1686 0.7950

8PM 1.9786 1.9714 0.4543

9PM 1.3850 1.3800 0.3407

10PM 0.7914 0.7886 0.2271

11PM 0.5936 0.5914 0.2271

12MN 0.3957 0.3943 0.2271


9/15

Time Table Summary

TIME TABLE SUBSTATION 1 SUBSTATION 2 COMBINED

12MN 0.9057 1.0171 1,922.86

1AM 0.9407 1.0171 1,957.86

2AM 0.9757 1.0171 1,992.86

3AM 1.5336 1.5257 3,059.29

4AM 2.0914 2.0343 4,125.71

5AM 3.5479 3.1364 6,684.29

6AM 5.0043 4.2386 9,242.86

7AM 3.9557 3.8421 7,797.86

8AM 2.9071 3.4457 6,352.86

9AM 4.0407 4.3500 8,390.71

10AM 5.1743 5.2543 10,428.57

11PM 5.0693 5.9893 11,058.57

12NN 4.9643 6.7243 11,688.57

1PM 4.2386 5.8207 10,059.29

2PM 3.5129 4.9171 8,430.00

3PM 4.0907 5.1986 9,289.29

4PM 4.6686 5.4800 10,148.57

5M 5.5043 5.8757 11,380.00

6PM 6.3400 6.2714 12,611.43

7PM 5.1993 5.3379 10,537.14

8PM 4.0586 4.4043 8,462.86

9PM 2.9000 3.1057 6,005.71

10PM 1.7414 1.8071 3,548.57

11PM 1.3236 1.4121 2,735.71

12MN 0.9057 1.0171 1,922.86


10/15

DAILY LOAD CURVE

SUBSTATION 1

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

12MN

1AM

2AM

3AM

4AM

5AM

6AM

7AM

8AM

9AM

10AM

11AM

12NN

1PM

2PM

3PM

4PM

5PM

6PM

7PM

8PM

9PM

10PM

11PM

12MN

LO

AD(MW)

TIME (hr)


11/15

SUBSTATION 2

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

12MN

1AM

2AM

3AM

4AM

5AM

6AM

7AM

8AM

9AM

10AM

11AM

12NN

1PM

2PM

3PM

4PM

5PM

6PM

7PM

8PM

9PM

10PM

11PM

12MN

LOAD(MW)

TIME (hr)


12/15

COMBINED

01,0002,0003,0004,0005,0006,0007,0008,0009,000

10,00011,00012,00013,000

14,00015,000

12M

N

1A

M

2A

M

3A

M

4A

M

5A

M

6A

M

7A

M

8A

M

9A

M

10A

M

11A

M

12NN

1P

M

2P

M

3P

M

4P

M

5P

M

6P

M

7P

M

8P

M

9P

M

10P

M

11P

M

12M

N

LOAD(kW)

TIME (hr)


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Variable Load Calculations

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