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Tumlingtar – Sitalpati 220 kV Transmission Line, 220 kV Substation at Sitalpati and 220 kV Bay Extension at Tumlingtar

  • ONGOING
  • Construction Supervision

NEA is constructing Tumlingtar – Sitalpati 220 kV transmission line and associated substations. The main components of the transmission line include: i) 220 kV double circuit transmission line from Tumlingtar to Sitalpati with twin Moose ACSR conductor, (ii) 220 kV (GIS)/132/33/11 kV AIS Substation at Sitalpati, and iii) Two nos. of 220 kV AIS bay extension at Tumlingtar. The objective of the project is to evacuate power generated by IPPs in Arun basin by 2025-30.

A separate 220 kV transmission system comprising 220 kV double circuit transmission line from Tumlingtar (220/132/33kV Substation) to Inaruwa (400/220/132/33 kV Substation) is already in place. The proposed Tumlingtar-SItalpati 220 kV transmission system would be integrated with aforesaid Koshi Corridor 220kV transmission system at 220/132/33 kV Tumlingtar Substation.

The location of Sitalpati substation has been selected so that power from hydro power projects could be evacuated through proposed 220 kV system. The power which would be available for evacuation at the proposed substation by 2025 is about 600MW.

Government of Nepal has funded for this project through Nepal Electricity Authority intends to utilize this fund for payments under the contract for the construction of Tumlingtar – Sitalpati 220 kV transmission line and associated substation.

Under this work, the construction of a new 220 kV double circuit transmission line from Tumlingtar to Sitalpati of Sankhuwasabha district, 220 kV (GIS)/132/33/11 kV AIS substation Sitalpati and 3 nos. of 220 kV line bays at Tumlingtar substation have been included. The line shall be designed and constructed for 220 kV voltage level with double circuit stringing. The substation at Sitalpati shall be planned as a 400/220/132/33/11 kV substation but the construction at present shall be limited to 220/132/33/11 kV voltage level and it shall be upgraded to 400 kV voltage level in future by keeping space provision in the layout for necessary 400 kV bays. The proposed transmission line and substation shall help in evacuating power from the candidate hydropower projects in the Koshi Zone of Nepal that are likely to come up by 2030.

Status Ongoing

Tags: Construction Supervision

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