Simaremare, Arionmaro Asi
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Kajian Alternatif Metode Kerja Perbaikan Trashrack (Saringan) Intake Malalo Unit PLTA Singkarak Kurniawan, Elfin; Simaremare, Arionmaro Asi; Prahastono, Iswan; Nainggolan, Akiman
ROTASI Vol 23, No 4 (2021): VOLUME 23, NOMOR 4, OKTOBER 2021
Publisher : Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/rotasi.23.4.18-27

Abstract

The Singkarak Hydroelectric Power Plant with a capacity of 175MW is the backbone of the Central Sumatra Subsystem (SumBagTeng) in the Sumatran electricity interconnection system so that the reliability of the Singkarak hydropower operation must be maintained. However, after more than 12 years of operation the Singkarak Hydroelectric Power Plant suffered damage to the trash rack of the Malalo Intake caused by the September 30, 2009 earthquake that hit Padang-Pariaman where the filter segments and the filter girder beam fell to the bottom of the intake. This results in waste originating from Singkarak lake being free to enter the head race tunnel and then to the generator engine generator which can interfere with the operation of the Singkarak hydropower plant so it is necessary to repair the Malalo trashrack intake.This study aims to evaluate several alternative work methods for repairing the trash-rack intake of Malalo PLTA Singkarak to minimize disruption to the operation of PLTA Singkarak during repairs. Three alternative improvement methods were evaluated using the Zero-One technique and weighting. From the results of the evaluation, it was found that the underwater construction work method is the best alternative to repair among other methods. Furthermore, the details of the implementation plan for the underwater construction work method are presented as a reference for the implementation of the repair PLTA Singkarak trash rack.
Strategies for Increasing the Use of Rooftop PV in Indonesia Haryadi, Fajar Nurrohman; Simaremare, Arionmaro Asi; Hakam, Dzikri Firmansyah; Aditya, Indra Ardhanayudha; Haryani, Indri
Journal of Developing Economies Vol. 7 No. 1 (2022)
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jde.v7i1.35679

Abstract

The current high energy consumption can cause scarcity as Indonesia's population growth has increased quite significantly. Alternative energy is needed to anticipate energy problems in the future. Solar energy is one of the options given the most significant potential for energy produced in Indonesia. This research aims to see the strategies that PLN can do to increase the use of Rooftop PV in Indonesia based on the results of the analysis that has been done. The approach to this research is a qualitative approach with the SWOT and FGD methods. Also, the data used are primary data from survey results on Rooftop PV users in Indonesia. The SWOT analysis results show that PLN is in quadrant I, which means it has an extreme market position. PT PLN has the potential to increase the use of Rooftop PV in Indonesia. Two strategic points can be carried out by PLN, namely, carrying out vertical integration and diversifying conglomerates. Also, the researcher has proposed several alternative strategies, namely the upstream (manufacturing) development plan, the downstream (consumer) development plan, and the internal development plan.