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All Journal Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Jurnal Riset Teknologi Pencegahan Pencemaran Industri
Suwitno Suwitno, Suwitno
Jenderal Soedirman University
Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Engineering Environmental Science

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 1 
Rancang Bangun Perbaikan Faktor Daya Otomatis Berbasis Smart Relay Pada Jaringan Tegangan Rendah Tiga Fasa Saputra, Ade Chandra; Suwitno, Suwitno; Hamzah, Amir
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Power factor is one of the problems in the electric power quality improvement. Power factor value that is too low can result in some electrical equipment can not operate properly. In many ways, low power factor need not cost cheap. To assist in the use of power factor correction capacitor banks to provide reactive power in the system. To improve the power factor is low, then the study will be compensated automatically by using smart relay as a switch to the capacitor bank. Cosphi great start on system is 0,26 lag with the addition of 2,08-33 µF capacitor to cosphi be 0.99 Lag.  Keywords: Capacitor Bank, Smart Relay, Power Facto
Rancang Bangun Transformator Untuk Penyearah 24-Pulsa Junaidi, Junaidi; Anto, Budhi; Suwitno, Suwitno
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Multipulse rectifiers are recently used in ac-dc converter to minimize line current distortion due to harmonics. Analysis of the input and output ac-dc converter has been done with the tendency that the number of pulse rectifier most will have a value THD (total harmonic distortion) line current is the smallest and has the greatest power factor. In this study the authors will design and transformers 3-phase make with primary in delta connection and secondary in zigzag connection to produce 12 phases voltage wave, each phase of phase 150. The next phase will output 12 is connected as the input of a 24-pulse rectifier, which consists of 4 units of 3-phase rectifier bridge connection that are arranged in series. Calculation of results rectifier current THD, indicates THD 24-pulse rectifier is lower than the 6-pulse rectifier, THD 24-pulse rectifier currents of 1.41% while the 6-pulse rectifier amounted to 3.61%.Keywords : Multiphase Transformer, Multipulse rectfier, total harmonic distortion of current
Perhitungan Rugi – Rugi Daya Saluran Distribusi Feeder Bangau Sakti Pada Gi Garuda Sakti PT. PLN (Persero) Taufiq, M; Suwitno, Suwitno
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 1 Januari s/d Juni 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Electrical power cannot be distributed properly to consumers due to the power losses that occur caused by technical and non-technical problems. The unbalance loads of distribution power system  channel can happen caused by  permanent conductive resistance. Good conductor should not have resistance value, but in reality every object has electrical  resistance value. This conductive resistanve can cause the power losses besides it the condition of distribution network such as the length of the network often increased also it contribution to cause the power losses. The distribution network is more prone to disruption because the distribution of electricity to consumers is carried out continuously. Therefore it is necessary for the calculation of the power losses generated by the conductor. The calculation is carried out on a 20 kV distribution channel with a point to point calculation method. Total primary current has generated phase R is 4104,848 W, phase S is 3880,827 W and phase T is 3585,039 W. Total power losses that has generated feeder Bangau Sakti is 11570,71 W. Total percentage power losses that generated feeder Bangau Sakti is 0,223%.   Keyword : Power Losses, Unbalance Load, Primary Distribution System
Analisis Aliran Daya 9 Bus Pada Saluran Transmisi 150 Kv Sub Sistem Riau Menggunakan Metode Gauss Seidel Sandi, Rio Aditya Febri; Suwitno, Suwitno
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Transmission lines are tools used to channel electricity from power plants to distributor stations to electricity users. Electricity systems continue to develop, ranging from using one machine to many machines (multi-machines). One analysis that can be done on interconnection systems when the state is steady (tunak or steady state) is the study of power flow. The study of power flow will ensure that the new power system can meet electricity needs economically, efficiently and safely. In this study the method used is gauss seidel method with the help of MATLAB software. From the research conducted, the plant data obtained power of 328.5 MW. While the power that arises between the channels between Koto Panjang to Kota Pinang the active power is 4977,388 KW and the reactive power is J7685,092 KW. So the total power lost from the Koto Panjang transmission line to Kota Pinang amounted to 9156,147 KW or equal to 9.1 MW. So the percentage of lost power that occurs in the channel is 2.78%. Keyword : transmission line, power flow, gauss seidel
Analisa Efisiensi Turbin Uap Berbahan Bakar Fiber Dan Cangkang Sawit Pada Boiler Di PT. Tri Bakti Sarimas Untuk Produksi-Memproduksi Energi Listrik Karamallah, Rizky; Suwitno, Suwitno
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

At this time the need for electrical energy continues to increase, power plants that use non-renewable natural resources are more dominantly used to meet the growing needs of electrical energy. Renewable energy is the solution to this problem. Biomass is a type of renewable energy sourced from living or dead biological materials that can be used as a fuel source in plants. Applications for the use of renewable energy sources in the form of biomass can be analyzed at PT Tri Bakti Sarimas. Where this company uses fiber and palm shell as fuel in boilers. By using fiber and palm shell as renewable fuel in boilers, so as to increase the efficiency value of the turbine. The study used the rankine cycle method to get efficiency values on turbines. From the results of thermal efficiency calculations used can be seen only 33.78% of the power provided into the boiler that can be converted into mechanical energy. At the efficiency value in steam power generation (PLTU) rank for pltu is 25%-50%. The efficiency of the turbine obtained is 33.78% while the efficiency of the generator is 62.5%. the required fibers as much as 7200 kg / hour and palm shells as much as 1800 kg / hour. The resulting turbine power is 2987.97 KW and the electricity generated is 983 KWh.Keyword : rankine cycle, turbine, fiber, palm shell
Optimization of Injection Pressure and Fuel Temperature in a Diesel Engine Using Biodiesel B40 Romy, Romy; Suwitno, Suwitno; Ginting, Yogie Rinaldi; Sembiring, Ferdinandus Extranta
Jurnal Riset Teknologi Pencegahan Pencemaran Industri Vol. 15 No. 1 (2024): May
Publisher : Balai Besar Standardisasi dan Pelayanan Jasa Pencegahan Pencemaran Industri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21771/jrtppi.2024.v15.no1.p1-9

Abstract

Biodiesel is an alternative fuel substitute for diesel engines produced from vegetable or animal oil through the transesterification reaction process between fatty acid, methanol, and catalyst. However, in its use in diesel engines, there is a decrease in engine performance. This is partly due to the higher viscosity value compared to diesel. Some ways to improve engine performance using biodiesel include adjusting injection pressure and increasing fuel inlet temperature. This study aimed to determine the effect of adding injection pressure and fuel inlet temperature on the performance of diesel engines using B40, such as power, thermal efficiency, sfc, and AFR. This study used a 1-cylinder diesel engine with constant rotation, using five variations of injection pressure 110-150 bar with a 10 bar interval, and five variations of fuel inlet temperature 30˚C-70˚C with a 10˚C intervals, and five loads from 5,000 kg/m2 to 25,000 kg/m2 with a 5000 kg/m2 interval. Testing and data processing were done using the Taguchi method. The results showed that the best diesel engine performance occurred at an injection pressure of 150 bar and a fuel temperature of 60˚C. The predicted performance value achieved under optimal conditions is a power of 2.9 kW at a load of 25000 kg/m2, thermal efficiency of 69.92% at a load of 25000 kg/m2, sfc of 3 x10-5 kg/kJ at a load of 25000 kg/m2, and AFR of 169.23 at a load of 5000 kg/m2. Temperature significantly affects engine performance power, sfc, thermal efficiency, and AFR compared to injection pressure.
Co-Authors Anak Agung Istri Sri Wiadnyani Budhi Anto Ginting, Yogie Rinaldi Junaidi Junaidi Karamallah, Rizky Laksono Trisnantoro Romy Romy Sandi, Rio Aditya Febri Sembiring, Ferdinandus Extranta Taufiq, M