From Monday, 76 megawatts of electricity generated from a unit of the complete 456 megawatt Upper Tamakoshi Hydropower Project under development with domestic investment will be connected to the national transmission line, following Prime Minister KP Sharma Oli’s inauguration.
The upper Tamakoshi project has been in the works for a long time. Finally, the tunnel water filling for the 456 MW Upper Tamakosi project, Nepal’s national priority project, was finished yesterday night.
The project consists of six 76 MW units. Prime Minister KP Sharma Oli will virtually launch the project on Monday at 4:00 p.m., according to Ganesh Neupane, a spokesman for the Upper Tamakoshi Hydropower Project.
After completing the power charge on the 47-kilometer transmission line from Khimti to Gongar on Sunday afternoon, project spokesperson Neupane stated that the project will begin distributing electricity generated from the first unit through the transmission line on Monday.
He added the electricity would be connected to a 220/132 KV substation in Ramechhap and supplied via Dhalkebar to the national grid.
The second unit will be operational a week after the first unit provides electricity, according to Neupane, and all of the units will create electricity by mid-September 2021.
Bigyan Shrestha, Chief Executive Officer of Upper Tamakoshi Hydro Power Ltd, announced last week that the tunnel water filling of the Upper Tamakoshi Hydroelectric Project was successfully completed last night after observation for 48 hours at its final level(i.e.1987 masl),” writes Bigyan Shrestha, Chief Executive Officer of Upper Tamakoshi Hydro Power Ltd on his Facebook wall.
“For the entire project, this is a MAJOR MILESTONE. We’re doing an electrical SOAK test on the first device today and will observe it for 24 hours before synchronizing it. Similarly, the 220 kV transmission line to Dhalkebar Substation is complete, and the final 220 kV line-in line-out arrangements at New Khimti Substation are expected to be finished this week. This will pave the path for the first unit (76 MW) to be synchronized with the integrated national power system (INPS), as well as additional load tests.
“We owe this accomplishment to the contractors Sino Hydro, Andritz Hydro, KEC International, and the consultant JV Norconsult-Lahmeyer. We are also grateful to all current and former board members, financiers, all relevant government officials, and all concerned stakeholders for their assistance in completing this national pride project,” adds CEO Shrestha.
On Sunday, the Upper Tamakoshi Hydroelectricity Project’s tunnel was successfully tested. On April 29, the project began filling the tunnel.
The 456 megawatt national pride project has been under construction in Lamabagar, Bigu Rural Municipality, Dolakha district, for the past decade. It is the world’s largest hydroelectric project financed entirely using domestic funds.
Water was initially pumped from the intake culvert and sedimentation pond to the main tunnel’s 8.4-kilometer length and 1,165-meter penstock pipe.
Dr. Ganesh Neupane, the project’s spokesperson, explained that the water was delivered to the tunnel and pipe in nine steps. “A little amount of water was supplied to the tunnel and then stopped for monitoring for 12 to 48 hours. “All of the structures and equipment are properly inspected,” he stated.
The tunnel was filled for 48 hours in the last step, with no leakage. After that, the first item is subjected to a 24-hour shock test before being inspected by a team of engineers.
Through a 220/132 kV substation in Ramechhap district, the Nepal Electricity Authority is linking electricity generated by the Upper Tamakoshi Project to the national transmission line. To transport the energy to the substation, wire is now being placed in four multi-circuit towers.
To install the lines, the NEA has shut down the Khimti-Lamo Sanghu transmission line since Sunday morning. The installation of cables will take three days, and the 76 MW of electricity generated by the project will be delivered through national transmission lines when all essential testing are performed.
Each of the project’s six turbine units has a capacity of 76 MW. After the first unit has been operational for a week, the second unit will start up. According to Dr. Neupane, all units will begin generating electricity by the middle of November this year.
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