Page 85 - Sonbeel Utsab 2024

Turbine efficiency= 89%
Transformer efficiency = 99% Generator efficiency=98%
The overall Hydropower efficiency in Sonbeel [10] would be

η overall = η Turbine * η Generator * η Transformer
(η is the product of all of the component efficiencies)
=0.89*0.98*0.99=9.86=86%

Head
Head is a very important parameter for a Hydro Power calculation Head is the
change in water levels between the hydro intake and the hydro discharge point.
Higher the head, greater is the water pressure across the hydro turbine resulting in
more power, generated. Fig 4 shows the plot between head Vs time in month in
sonbeel [11]. Table1 shows the Power calculated with 5 year mean monthly averages values of
outlet flow rate, head in Sonbeel

Fig:4.Plot between Head Vs Month in Sonbeel

Table1:Power calculated with 5 year mean monthly averages values of outlet flow rate,
head in Sonbeel

Month Outletflowrate(l/s)(1m3=1000l/s) Head Efficiency(%) Power(K.W)
January 12310 18 86 1869.38
February 10630 18. 86 1614.26
March 12380 18.3 86 1911.35
April 16800 19 86 2692.96
May 35130 20.1 86 5957.19
June 90280 22 86 16756.44
July 172950 22 86 32100.42
August 185710 22.5 86 35252.12

September 131420 22.2 86 24613.98

October 60110 21 86 10649.60
November 27250 20 86 4597.95
December 18180 20 86 3067.55

77