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file:///tmp/habibi/worker-13/251_23143460655266208_Power and Energy _ Nepali Month.xls 1
Dariyal Nadi
HYDROLOGICAL CALCULATION
Job Job No
Subject WECS Calculated
Date 30-Apr-19 Checked
Location #REF! Average altitude 2150 m
Catchment Area #REF! Monsoon Wetness index #REF!
Area Below 5000m #REF! Area Below 3000m #REF!
Extreme Hydrology
Flood flows Low Flows
Return Period, T yrs Return Period Day
2 #REF!
2
1 #REF!
5 #REF! 7 #REF!
10 #REF! 30 #REF!
20 #REF! Monthly #REF!
50 #REF!
10
1 #REF!
100 #REF! 7 #REF!
200 #REF! 30 #REF!
500 #REF! Monthly #REF!
1000 #REF!
20
1 #REF!
5000 #REF! 7 #REF!
10000 #REF! 30 #REF!
Monthly #REF!
Long term Hydrology
Mean Monthly Flows
Month
January #REF!
February #REF!
March #REF!
April #REF!
May #REF!
June #REF!
July #REF!
August #REF!
September #REF!
October #REF!
November #REF!
December #REF!
Annual flow #REF!
Maximum flow occurred #REF!
Minimum flow #REF!
Flow Duration curve
Probability percentage,%
0 #REF!
5 #REF!
20 #REF!
40 #REF!
50 #REF!
60 #REF!
65 #REF!
80 #REF!
95 #REF!
100 #REF!
km2
km2km2
Flood flows, Q m3/s Low flows, Q m3/s
Flow, Q m3/s
Flow, Q m3/s
0 10 20 30 40 50 60 70 80 90 100
0.00
10.00
20.00
30.00
40.00
50.00
60.00
70.00
80.00
90.00
Flow Duration Curve
Probability Exceedence, %
Flow, m3/s
1 2 3 4 5 6 7 8 9 10 11 12
0.00
2.00
4.00
6.00
8.00
10.00
12.00
Monthly Flow
Month
Flow, m3/s
file:///tmp/habibi/worker-13/251_23143460655266208_Power and Energy _ Nepali Month.xls 2
Dariyal Nadi
HYDROLOGICAL CALCULATION
Job Job No
Subject Comparision of new and old WECS Calculated
Date 30-Apr-19 Checked
Flood flows
Return Period, T yrs Modified Hydest Hydest
2 #REF! #REF!
5 #REF! #REF!
10 #REF! #REF!
20 #REF! #REF!
50 #REF! #REF!
100 #REF! #REF!
200 #REF! #REF!
500 #REF! #REF!
1000 #REF! #REF!
5000 #REF! #REF!
Low Flows
Return Period, T yrs Day Modified Hydest Hydest
2
1 #REF! #REF!
7 #REF! #REF!
30 #REF! #REF!
Monthly #REF! #REF!
10
1 #REF! #REF!
7 #REF! #REF!
30 #REF! #REF!
Monthly #REF! #REF!
20
1 #REF! #REF!
7 #REF! #REF!
30 #REF! #REF!
Monthly #REF! #REF!
Mean Monthly Flows
Month Modified Hydest Hydest Average
January #REF! #REF! #REF!
February #REF! #REF! #REF!
March #REF! #REF! #REF!
April #REF! #REF! #REF!
May #REF! #REF! #REF!
June #REF! #REF! #REF!
July #REF! #REF! #REF!
August #REF! #REF! #REF!
September #REF! #REF! #REF!
October #REF! #REF! #REF!
November #REF! #REF! #REF!
December #REF! #REF! #REF!
Annual flow #REF! #REF! #REF!
Flow Duration curve
Probability percentage,% Modified Hydest Hydest Average
0 #REF! #REF! #REF!
5 #REF! #REF! #REF!
20 #REF! #REF! #REF!
40 #REF! #REF! #REF!
50 #REF! #REF! #REF!
60 #REF! #REF! #REF!
65 #REF! #REF! #REF!
80 #REF! #REF! #REF!
95 #REF! #REF! #REF!
Flood flows, Q m3/s
Low flows, Q m3/s
Mean monthly flows, Q m3/s
Flow, Q m3/s
file:///tmp/habibi/worker-13/251_23143460655266208_Power and Energy _ Nepali Month.xls 3
100 #REF! #REF! #REF!
1 0 24.11
2 10 18.88
3 20 14.87
4 30 9.52
5 40 6.52
6 45 5.33
7 50 5.02
8 55 4.78
9 60 3.88
10 65 3.46
11 70 3.24
12 80 2.69
13 90 2.42
14 100 2.37
0 10 20 30 40 50 60 70 80 90 100
0.00
5.00
10.00
15.00
20.00
25.00
30.00
FLOW DURATION CURVE for CAR Method
Percentage of exceedence(%)
Flow Q m3/s
0 10 20 30 40 50 60 70 80 90 100
0.00
5.00
10.00
15.00
20.00
25.00
30.00
FLOW DURATION CURVE for CAR Method
Percentage of exceedence(%)
Flow Q m3/s
1 0 48.48
2 10 36.34
3 20 24.98
4 30 19.88
5 40 10.92
6 45 10.00
7 50 9.45
8 55 8.78
9 60 7.37
10 65 6.50
11 70 5.96
12 80 5.90
13 90 4.46
14 100 1.80
0 10 20 30 40 50 60 70 80 90 100
0.00
10.00
20.00
30.00
40.00
50.00
60.00
FLOW DURATION CURVE for CAR Method
Percentage of exceedence(%)
Flow Q m3/s
0 10 20 30 40 50 60 70 80 90 100
0.00
10.00
20.00
30.00
40.00
50.00
60.00
FLOW DURATION CURVE for CAR Method
Percentage of exceedence(%)
Flow Q m3/s
1 0 #REF!
2 10 #REF!
3 20 #REF!
4 30 #REF!
5 40 #REF!
6 45 #REF!
7 50 #REF!
8 55 #REF!
9 60 #REF!
10 65 #REF!
11 70 #REF!
12 80 #REF!
13 90 #REF!
14 100 #REF!
0 10 20 30 40 50 60 70 80 90 100
0.00
2.00
4.00
6.00
8.00
10.00
12.00
FLOW DURATION CURVE for CAR Method
Percentage of exceedence(%)
Flow Q m3/s
0 10 20 30 40 50 60 70 80 90 100
0.00
2.00
4.00
6.00
8.00
10.00
12.00
FLOW DURATION CURVE for CAR Method
Percentage of exceedence(%)
Flow Q m3/s
Budhi Gandaki Nadi Hydropower Project
Month Mean monthly flow Nepali Month as per NEA
January 17.47 Baishakh (Apr/May) 38.55
February 14.91 Jestha (May/June) 77.47
March 17.27 Ashad (June/July) 164.00
April 28.07 Shrawan (July/Aug) 210.33
May 50.15 Bhadra (Aug/Sept) 188.09
June 110.65 Ashwin (Sept/Oct) 113.69
July 203.40 Kartik (Oct/Nov) 54.25
August 216.82 Mangsir (Nov/Dec) 29.58
September 155.96 Poush (Dec/Jan) 20.25
October 74.61 Magh (Jan/Feb) 15.97
November 38.55 Falgun (Feb/Mar) 16.32
December 23.96 Chaitra (Mar/Apr) 21.63
Average Flow 79.32 Average 79.18
Maximum Flow 216.82
Minimum Flow 14.91
(m3/s)
Budhi Gandaki Nadi HPP
POWER AND ENERGY CALCULATION
Design flow (m3/s)-Q44 :52.72 Station number:
Gross head (m) :200 Location:
Efficiency :88.78% River:
Dry season outage including transformer loss :5%
Wet season outage including transformer loss :5%
Generator efficiency
Low flow (m3/s) :16.0 Turbine efficiency
D/S release (m3/s) :10 % of monthly flow
Month Mean monthly flow Headloss Generation capacity
days m (kW) (kWh)
Baishakh (Apr/May) 38.55 34.70 34.70 31 8 58,023
Jestha (May/June) 77.47 69.73 52.72 31 10 87,239
Ashad (June/July) 164.00 147.60 52.72 32 10 87,239
Shrawan (July/Aug) 210.33 189.30 52.72 31 10 87,239
Bhadra (Aug/Sept) 188.09 169.28 52.72 31 10 87,239
Ashwin (Sept/Oct) 113.69 102.32 52.72 31 10 87,239
Kartik (Oct/Nov) 54.25 48.83 48.83 30 8 81,650
Mangsir (Nov/Dec) 29.58 26.62 26.62 29 6 44,983
Poush (Dec/Jan) 20.25 18.23 18.23 30 4 31,118 21,284,671
Magh (Jan/Feb) 15.97 14.37 14.37 29 4 24,537 16,223,637
Falgun (Feb/Mar) 16.32 14.69 14.69 30 4 25,071 17,148,441
Chaitra (Mar/Apr) 21.63 19.47 19.47 30 4 33,234 22,731,927
Average Flow 79.18 77,388,676
Maximum Flow 210.33 Installed Capacity (MW) 87
Minimum Flow 15.97 Dry Energy (GWh) 77.39
Wet Energy (GWh) 436.90
Total (kWh) 514284177.06
Total (GWh) 514.28
Plant factor 67%
Catchment Area (Km2):
Available
flow
Generation
flow
Operating
days
Dry season
energy
(m3/s) (m3/s) (m3/s)
Budhi Gandaki Nadi HPP
POWER AND ENERGY CALCULATION
445
Arughat
Budhi Gandaki
2123.61
97%
92%
(kWh)
41,010,357
61,660,876
63,649,937
61,660,876
61,660,876
61,660,876
55,848,828
29,742,875
436,895,501
15.05%
436.90
77.39
Wet season
energy
Avg energy
HL %
% of total HL (total HL=4%)
4% 43,168.80 30.00% 0
5% 64,906.19 100.00% 0
5% 66,999.93 100.00% 0
5% 64,906.19 100.00% 0
5% 64,906.19 100.00% 0
5% 64,906.19 100.00% 0
4% 58,788.24 72.00% 0
3% 31,308.29 35.00% 0
2% 22,404.92 25.00% 0
2% 17,077.51 21.00% 0
2% 18,050.99 20.00% 0
2% 23,928.34 21.00% 0
541,352
514,284.18
0.1505
NRs. MNRs.
8.4 3669.9222082
4.8 371.46564518
4041.3878534
y = 0.0471x2 - 6E-05x + 1.2049
Interpolation
x1 x2 y1 y2 xy
1 7.69 15.38 #REF! #REF! 0#REF!
2 7.69 15.38 #REF! #REF! 10 #REF!
3 15.38 23.08 #REF! #REF! 20 #REF!
4 23.08 30.77 #REF! #REF! 30 #REF!
5 38.46 46.15 #REF! #REF! 40 #REF!
6 38.46 46.15 #REF! #REF! 45 #REF!
7 46.15 53.85 #REF! #REF! 50 #REF!
8 53.85 61.54 #REF! #REF! 55 #REF!
9 53.85 61.54 #REF! #REF! 60 #REF!
10 61.54 69.23 #REF! #REF! 65 #REF!
11 69.23 76.92 #REF! #REF! 70 #REF!
12 76.92 84.62 #REF! #REF! 80 #REF!
Budhi Gandaki NadI HPP
POWER AND ENERGY CALCULATION
Design flow (m3/s)-Q44 :52.72 Station number:
Gross head (m) :200 HL 10.00 Location:
Efficiency :88.78% River:
Dry season outage including transformer loss :5%
Wet season outage including transformer loss :5%
Generator efficiency
Low flow (m3/s) :16.0 Turbine efficiency
D/S release (m3/s) :10 % of monthly flow
Month Mean monthly flow Headloss Generation capacity
days m (kW) (kWh)
Baishakh (Apr/May) 38.55 34.70 34.70 31 8.00 58,023 41,010,357
Jestha (May/June) 77.47 69.73 52.72 31 10.00 87,239 30,830,438
Ashad (June/July) 164.00 147.60 52.72 32 10.00 87,239
Shrawan (July/Aug) 210.33 189.30 52.72 31 10.00 87,239
Bhadra (Aug/Sept) 188.09 169.28 52.72 31 10.00 87,239
Ashwin (Sept/Oct) 113.69 102.32 52.72 31 10.00 87,239
Kartik (Oct/Nov) 54.25 48.83 48.83 30 8.00 81,650
Mangsir (Nov/Dec) 29.58 26.62 26.62 29 6.00 44,983 14,871,437
Poush (Dec/Jan) 20.25 18.23 18.23 30 4.00 31,118 21,284,671
Magh (Jan/Feb) 15.97 14.37 14.37 29 4.00 24,537 16,223,637
Falgun (Feb/Mar) 16.32 14.69 14.69 30 4.00 25,071 17,148,441
Chaitra (Mar/Apr) 21.63 19.47 19.47 30 4.00 33,234 22,731,927
Average Flow 79.18 164,100,908
Maximum Flow 210.33 Installed Capacity (MW) 87
Minimum Flow 15.97 Dry Energy (GWh) 164.10
Wet Energy (GWh) 350.18
Total (kWh) 514284177.06
Total (GWh) 514.28
Plant factor 67%
Catchment Area (Km2):
Available
flow
Generation
flow
Operating
days
Dry season
energy
(m3/s) (m3/s) (m3/s)
Budhi Gandaki NadI HPP
POWER AND ENERGY CALCULATION
445
Arughat
Budhi Gandaki
2123.61
97%
92.00%
(kWh)
30,830,438
63,649,937
61,660,876
61,660,876
61,660,876
55,848,828
14,871,437
350,183,269
31.91%
Wet season
energy
Avg energy
HL %
% of total HL (total HL=4%)
4% 43,168.80 30.00% 3
5% 64,906.19 60.00% 6
5% 66,999.93 100.00% 10
5% 64,906.19 100.00% 10
5% 64,906.19 100.00% 10
5% 64,906.19 100.00% 10
4% 58,788.24 72.00% 7.2
3% 31,308.29 35.00% 3.5
2% 22,404.92 25.00% 2.5
2% 17,077.51 21.00% 2.1
2% 18,050.99 20.00% 2
2% 23,928.34 21.00% 2.1
541,352
514,284.18
y = 0.0471x2 - 6E-05x + 1.2049
Interpolation
x1 x2 y1 y2 xy
1 7.69 15.38 #REF! #REF! 0#REF!
2 7.69 15.38 #REF! #REF! 10 #REF!
3 15.38 23.08 #REF! #REF! 20 #REF!
4 23.08 30.77 #REF! #REF! 30 #REF!
5 38.46 46.15 #REF! #REF! 40 #REF!
6 38.46 46.15 #REF! #REF! 45 #REF!
7 46.15 53.85 #REF! #REF! 50 #REF!
8 53.85 61.54 #REF! #REF! 55 #REF!
9 53.85 61.54 #REF! #REF! 60 #REF!
10 61.54 69.23 #REF! #REF! 65 #REF!