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Dwi Ajiatmo
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Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering

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Analisis Perencanaan Investasi Jaringan Tenaga Listrik Dwi Ajiatmo; Henny Dwijayani
Jurnal JEETech Vol. 1 No. 2 (2020): Nomor 2 November
Publisher : Universitas Darul Ulum

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (366.214 KB) | DOI: 10.48056/jeetech.v1i2.11

Abstract

Electricity is able to make a positive change and contribution to people's lives and well-being. This study aims to assess the feasibility of investment in the construction of low voltage electricity networks. The method used with project evaluation analysis is based on financial analysis. The criteria used to analyze activities carried out for 10 years use payback period (PP) analysis, net present value (NPV), internal rate of return (IRR), and profitability index (IP). The results showed that the analysis of investment planning can be carried out with the consequence of the results obtained in the form of not so large returns. PP results show the investment value with the payback period method will Return in the 9th year, while the positive NPV value is still above zero while the IRR value shows the value of 11% below the social discount rate as well as the IP value showing the value of 0.90. The feasibility of investment in terms of economic-financial analysis by looking at per criteria shows that investment is still feasible to be carried out with minimal profit levels.
Optimasi AVR Pada Pembangkit Listrik Mikro-hidro Menggunakan Metode Differential Evolution (DE) Rio Firmansyah; Budiman; Dwi Ajiatmo; Agus Raikhani
SinarFe7 Vol. 2 No. 1 (2019): Sinarfe7-2 2019
Publisher : FORTEI Regional VII Jawa Timur

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Abstract

Mikrohidro memiliki tiga komponen utama dalam pembangkitan yaitu air (sebagai sumber energi), turbin, dan generator. Air yang mengalir dengan kapasitas tertentu disalurkan dengan ketinggian tetentu menju rumah instalasi (rumah turbin). Pada rumah tersebut (power-house) instalasi air tersebut akan menumbuk turbin, dipastikan turbin akan menerima langsung energi dari air dan mengubahnya menjadi energi mekanik yang menyebabkan berputarnya poros turbin. Perubahan beban dapat menyebabkan seringnya fluktuasi pada frekuensi dan tegangan system. Perihal ini dapat menyebabkan kerusakan pada peralatan listrik. Karena itu digunakan Automatic Voltage Regulator (AVR) agar mengontrol tegangan dapat lebih stabil. Untuk mendapatkan parameter kontrol optimal pada sistem pembangkit listrik tenaga air mikro digunakan PID controller. Penelitian ini membandingkan metode tanpa control, metode kontrol PID-ZN, metode PID-DE, agar diperoleh metode kontrol yang paling baik. Dari perbandingan hasil simulasi didapatkan, bahwa respon terbaik pada system pembangkitan mikro-hidro diperoleh dari model control PID-DE kontroller dan respon terbaik pada sistem AVR pada model kontrol PID-DE kontroller. Hasil penelitian ini nantinya akan dicoba bengan metode lain, yang hasilnya mungkin akan lebih baik.
Desain Controller Pada Heating Furnace Berbasis Metode Firefly Algorithm (FA) Febrian Rizal Anas; Dwi Ajiatmo; Hidayatul Nurohmah; Ali, Machrus
Nucleus Journal Vol. 1 No. 2 (2022): November
Publisher : Universitas Darul Ulum

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32492/nucleus.v1i2.1202

Abstract

Furnace is an equipment used to heat or change shape. Process control has become increasingly important in industry, as a consequence of global competition, Year after year, furnaces have improved in both process and industrial equipment. The tuning process ensures that system performance meets operating objectives. Artificial Intelligent (AI)-based intelligent control has developed a lot to improve conventional controls to control voltage loads and is always under constant assessment of the variable. In this research task, it will be discussed about the control of the furnace temperature so that it remains constant with PID and by tuning the Firefly Algorithm (FA) with changes in the output voltage obtained which have better settling time, overshoot and undershoot.
Optimasi Kualitas Tenaga Listrik Di Area Banyuwangi Menggunakan Radio Gateway Over Internet Protocol Machrus Ali; Dwi Ajiatmo; Muhlasin
Jurnal JEETech Vol. 1 No. 2 (2020): Nomor 2 November
Publisher : Universitas Darul Ulum

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (917.208 KB) | DOI: 10.48056/jeetech.v1i2.3

Abstract

One of the communication problems at PLN is communication in areas that are not covered by radio frequencies. With the limitation related to radio frequency because the blankspot can have an impact on the speed of service, both in terms of recovering when disturbances occur, communication for coordination between officers, and maintenance work. Meanwhile, efforts to expand radio frequency coverage areas by building tower repeater links and BTS tower rentals require relatively large costs. Information technology that is developing now makes it easy for everyone to communicate through various media, one of which is an internet connection. Widespread development of infrastructure owned by telecommunications providers, the wider availability of internet connections in the blank spot area. To overcome the blank spot areas that have an impact on SAIDI and SAIFI, Radio Gateway Over Internet Protocol is used in the working area of ​​PT. PLN (Persero) Banyuwangi area that connects communication radios with mobile phones through the internet network. From the calculation using the average formula in the Microsoft Excel program the average value of SAIDI is better than before. Meanwhile, the average SAIFI score afterwards is also better than before. By using the T-Test test analysis it is known that the calculated t value is better, and for SAIFI it is known that the calculated SAIDI data is also better.
Co-Authors Agus Raikhani Budiman Febrian Rizal Anas Henny Dwijayani Hidayatul Nurohmah Machrus Ali Muhlasin Rio Firmansyah