Analisa Pemilihan Model Tumpuan Pembangkit Listrik Tenaga Hidrokinetik pada Saluran Kanal PLTU

Bobby Asukmajaya R; Suhariyanto; Kartika Purwitasari; Agustin Dita Lestari; Winda Harsanti

Authors

Bobby Asukmajaya R Politeknik Negeri Malang Author
Suhariyanto Politeknik Negeri Malang Author
Kartika Purwitasari Politeknik Negeri Malang Author
Agustin Dita Lestari Politeknik Negeri Malang Author
Winda Harsanti Politeknik Negeri Malang Author

Keywords:

PLTHK, Turbin, Tumpuan, Beton Bertulang

Abstract

The small hydroelectric power plant (PLTHk) at UP Paiton has been operational since 2021, significantly reducing imported kWh consumption. This innovative technology utilises the potential of alternative green energy from outlet canals that were previously unused. However, the turbine support system requires structural development to enhance safety and durability, particularly in view of the threat of corrosion in coastal environments. This study analyses four alternative support structure designs that use economical, corrosion-resistant reinforced concrete materials. The design alternatives are: (1) a reinforced concrete girder bridge spanning the canal; (2) a reinforced concrete girder bridge with supports in the middle of the canal; (3) a U-shaped support model with three segments crossing the channel; and (4) a U-shaped support model extending along the side of the canal. The evaluation was based on technical and economic feasibility and ease of maintenance. The results of the technical and economic feasibility analyses identified the fourth model, the U-shaped support placed on the side of the canal, as the best alternative. This design offers advantages in terms of economics, long-term durability and ease of access for maintenance. The U-shaped support model on the canal side is the optimal solution for PLTHk development at UP Paiton, improving operational safety, extending the service life and facilitating more efficient maintenance activities.

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