Dr. D.Y. Patil School of Engineering and Technology – Report on VISIT TO Koyna DAM’s HYDRO-ELECTRIC POWER PLANT CLASS: B.E. CIVIL (DIV. B )(Civil Engineering Department)
Program Name: VISIT TO Koyna DAM’s HYDRO-ELECTRIC POWER PLANT CLASS: B.E. CIVIL (DIV. B )(Civil Engineering Department)
Program Date: 03/02/2017
Venue: Koyna Dam – Lake Tapping, Humbarli, Maharashtra.
The Koyna Hydroelectric Project is the largest completed hydroelectric power plant in India. It is a complex project with four dams including the largest dam on the Koyna River, Maharashtra hence the name Koyna Hydroelectric Project. The project site is in Satara district near Patan. The village Helwak near the dam was later known as Koynanagar.
The total capacity of the project is 1,960 MW. The project consists of four stages of power generation. All the generators are located in underground powerhouses excavated deep inside the mountains of the Western Ghats. A dam foot powerhouse also contributes to the electricity generation. Due to the project’s electricity generating potential the Koyna River is considered as the life line of Maharashtra.
The project takes advantage of the height of Western Ghats. Thus a very large hydraulic head is available over a very short distance.
The project is composed of four dams with the major contributors being the Koyna Dam and Kolkewadi Dam. The water from Shivasagar reservoir was formed by the Koyna Dam and is used in the 1st, 2nd and 4th stages. This water is drawn from head race tunnels situated below the reservoir. Then it travels through vertical pressure shafts to the underground powerhouses. The discharged water from these stages is collected and stored in Kolkewadi Dam situated near village of Alore. The water is drawn from the penstocks of Kolkewadi Dam to an underground power station in the 3rd stage and then discharged to the Arabian Sea.