Article Per Year (5 Year)
p-Index From 2019 - 2024
0.444
P-Index
This Author published in this journals
All Journal Journal of Renewable Energy, Electrical, and Computer Engineering
Hamdi Akmal Lubis, Hamdi Akmal
Unknown Affiliation
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Analysis of the Effect of Loading on the Transformers Usage Time Ritonga, Adi Syahputra; Muthalib, Muchlis Abdul; Daud, Muhammad; Lubis, Hamdi Akmal; Pokhrel, Biswas Babu; Phuyal, Sudip; Gohatre, Umakant B.
Journal of Renewable Energy, Electrical, and Computer Engineering Vol 1, No 2 (2021): September 2021
Publisher : Institute for Research and Community Service, Universitas Malikussaleh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/jreece.v1i2.5237

Abstract

The reliability and stability of the system in the operation of the electric power system is very important, in order to provide comfort in service to consumers. The transformer is a very important component in the electric power system, because it is used as a voltage adjuster for the load being served. This study discusses the effect of loading and temperature on the life shrinkage of 36/60 MVA power transformers in block 3 and block 4 carried out at PT. PJB UBJ O&M PLTMG Arun Lhokseumawe, Aceh. From the calculation results after 4 years the transformer operates, if the transformer is given a 100% load, the transformer will experience an age difference of 2.52 p.u/day so that it has a remaining life for of 10 years. As for the transformer that is given a load of 90%, the transformer will experience an age difference of 1.44 p.u/day so that it has a remaining life to perform operations for another 18 years. Then for a transformer that is given a load of 80%, the transformer will experience an age difference of 0.67 p.u/day so that it will have a remaining life to carry out the operation again for another 38 years. From the above calculation, the origin of the temperature obtained for the ONAN type of cooler in block 3 is 0.71 p.u/day and in block 4 it is 0.70 p.u/day. While the ONAF type of cooler in block 3 is 0.004 p.u/day and in block 4 it is 0.005 p.u/day. This is in accordance with the regulation SPLN50/1982 regarding transformer life shrinkage.
Information Technology Governance Audit Using COBIT 5 of DSS Domain (Deliver, Service, And Support) Framework at Malikussaleh University Lhokseumawe Safwandi, Safwandi; Muthmainnah, Muthmainnah; Jannah, Misbahul; Lubis, Hamdi Akmal
Journal of Renewable Energy, Electrical, and Computer Engineering Vol 2, No 1 (2022): March 2022
Publisher : Institute for Research and Community Service, Universitas Malikussaleh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/jreece.v2i1.6633

Abstract

Information technology is very important for companies or institutions to support the achievement of the company's strategic plans to achieve their goals, vision, and mission. Nowadays, an institution can improve the performance of information technology that goes hand in hand with the development of information technology to produce better technology by auditing information technology governance in the company. The purpose of this study is to analyze IT governance using the COBIT 5 framework in the DSS domain at Malikussaleh University Lhokseumawe. COBIT 5 provides a comprehensive framework that helps companies achieve their goals in corporate governance and IT governance. The framework helps companies create optimum value from IT by maintaining a balance between realizing benefits and optimizing risk and resource usage levels. By conducting an audit of information technology governance in the company, the company can find out whether the information technology that has been operating is in accordance with the business processes and company objectives and convey accurately based on the IT strategy. The results of the information technology governance audit based on COBIT 5 in the DSS Domain, on average are at 2.2 (Manage process) to 2.6 (Established Process).
Co-Authors Gohatre, Umakant B. Misbahul Jannah Muchlis Abdul Muthalib Muhammad Daud Muthmainnah Muthmainnah Phuyal, Sudip Pokhrel, Biswas Babu Ritonga, Adi Syahputra Safwandi Safwandi, Safwandi