Bảo Nhai 2 Hydropower Project (Bắc Hà District, Lào Cai Province) is a dam-integrated hydropower plant on the Chảy River, designed directly by VCE. The project was completed and began generating electricity in 2022. VCE studied the project and proposed its inclusion in the development plan to utilise the remaining head between Bảo Nhai 1 and Nậm Lúc hydropower plants.
The reservoir has a storage capacity of approximately 5.5 million m³, impounded by a concrete gravity dam approximately 27.5 m high. The spillway has 05 gated bays, each 14 m wide. The powerhouse contains 02 bulb turbine units (Capsule), with a total installed capacity of 14.5 MW and average annual generation of 49.97 million kWh. Rated head: Htt = 5.8 m; rated discharge through the generating units: Qmax = 285 m³/s. A 35 kV GIS substation at the plant connects to the Bảo Nhai 110 kV collector substation via a 3 km, 35 kV transmission line. From the Bảo Nhai 110 kV collector substation, Bảo Nhai 1 & 2 plants connect to the national grid over a distance of 4.7 km.
Contracting entity: Cty CP Xây dựng và Thương mại 299
Contract Nos.: 01/HĐKT-BN dated 12/5/2017 and 04/HĐKT-BN1 dated 25/4/2018
Scope of work: Preparation of planning amendment and supplementary documentation, feasibility study, technical design and shop drawings. Preparation of bidding documents for the electromechanical and hydromechanical equipment package. Design of the 35 kV transmission line and substation. Design of the 110 kV transmission line and collector substation.
