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All Journal Buletin Udayana Mengabdi Jurnal SPEKTRUM PROSIDING CSGTEIS 2013 Journal of Electrical, Electronics and Informatics International Journal of Engineering and Emerging Technology Jurnal Impresi Indonesia Jurnal SPEKTRUM Journal of Electrical, Electronics and Informatics

I Made Mataram

Department Of Electrical And Computer Engineering, Udayana University

Author-ID : 2932671

Religion Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Mechanical Engineering Social Sciences

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PENGGUNAAN KAPASITOR BANK UNTUK MEMPERBAIKI FAKTOR DAYA DAN MENGURANGI RUGI-RUGI DAYA MENGGUNAKAN FUZZY LOGIC CONTROLLER DI QUEST HOTEL KUTA BADUNG Wiadnya Wiantara, I Dewa Gede; Mataram, I Made; Manuaba, Ida Bagus Gd.
Jurnal SPEKTRUM Vol 7 No 1 (2020): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SPEKTRUM.2020.v07.i01.p15

Quest Hotel Kuta is a place of business engaged in lodging services. To support operational needs, the hotel uses electrical equipment, most of which are inductive. The use of high inductive loads can produce high reactive power, depending on the power factor because the active power obtained from the installed power will be less. Based on the measurement results at Quest Hotel Kuta the measured power factor is 0.70, while PLN charges the excess cost of kVARH to the customer if the average power factor is less than 0.85. To be able to improve the low power factor can be done by using a capacitor bank, the capacitor uses the reactive power required at the inductive load. Changing the power factor in consumers can change. To equalize the power change factor, the capacitor bank is assembled to work multiple steps / multi steps. Multi-step capacitor banks consist of several capacitors with the same or different capacities. Based on the results of measurements before using the fuzzy logic method, the obtained power factor is 0.70 to 0.74 while the capacitors are installed from 12.5 kVAR to 25 kVAR. After using the fuzzy logic controller method the power factor obtained is 0.80 to 0.87 and capacitors using the 13.1 kVAR to 22.4 kVAR method. Whereas the power losses before using the fuzzy logic controller method are 26220.5 watts. After using the fuzzy logic controller method, the power losses incurred were 23214.45 watts.

Analisis Pembangkit Listrik Sistem Hybrid Grid Connected Di Villa Peruna Saba, Gianyar – Bali Gordon Arifin Sinaga; I Made Mataram; Tjok Gede Indra Partha
Jurnal SPEKTRUM Vol 6 No 2 (2019): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Renewable energy is energy that comes from natural processes that will not be exhausted and sustainable if managed properly. In its use, to maintain the continuity of the availability of electrical energy maximally, it is necessary to combine several types of power plants that are connected to the grid or better known as hybrid grid connected power systems. This research took place at Villa Peruna Saba, Gianyar - Bali which uses a hybrid grid connected power system that combines photovoltaics and generators connected to the grid utilty in supplying electricity loads. The analysis is carried out on the characteristics of the average load, the contribution of each electric power source and the workings of the hybrid grid connected hybrid power plant system. From the analysis, it is known that the contribution of power derived from solar power plants is 561.27 kW or 22.41% in April 2018 and 510.72 kW or 20.71% in May 2018.

PEMERATAAN BEBAN PADA GARDU KD 056 PENYULANG TABANAN PT PLN (PERSERO) DISTRIBUSI BALI AREA BALI SELATAN I Putu Agus Semara Putra; I Ketut Wijaya; I Made Mataram
Jurnal SPEKTRUM Vol 5 No 1 (2018): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Load balancing is a routine done by PLN to manage a distribution substation. It is done on Peak Load Time (WBP) only. Initial load measurements and load data on a distribution transformer need to be done for balancing as input of simulation software. The load imbalance in a power distribution system is due to an imbalance in single phase loads in the R, S and T phases in low voltage networks due to the imbalance of the load the current in the neutral transformer arises. The current flowing in the neutral of the transformer causes losses, i.e. losses due to neutral currents in the neutral conductor of transformers and losses due to neutral currents flowing to the ground. In this research load equalization in substation KD 056 was done by making a simulation on the ETAP program by measuring the value of the voltage on the KD 056 substation. The result of load balancing in KD 056 substation with the simulation ETAP program i.e. the voltage drop obtained from the percentage of KD 056 substation after being balanced by voltage drop on phase R which decreased from 7.30% to 1.36% from the 219VA source voltage. Once the KD 056 substation is balanced, it can lower the voltage drop and power losses, thus the system voltage meets the standards of PLN.

PENGGUNAAN KAPASITOR BANK UNTUK MEMPERBAIKI FAKTOR DAYA DAN MENGURANGI RUGI-RUGI DAYA MENGGUNAKAN FUZZY LOGIC CONTROLLER DI QUEST HOTEL KUTA BADUNG I Dewa Gede Wiadnya Wiantara; I Made Mataram; Ida Bagus Gd. Manuaba
Jurnal SPEKTRUM Vol 7 No 1 (2020): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Quest Hotel Kuta is a place of business engaged in lodging services. To support operationalneeds, the hotel uses electrical equipment, most of which are inductive. The use of high inductiveloads can produce high reactive power, depending on the power factor because the active powerobtained from the installed power will be less. Based on the measurement results at Quest Hotel Kutathe measured power factor is 0.70, while PLN charges the excess cost of kVARH to the customer ifthe average power factor is less than 0.85. To be able to improve the low power factor can be done byusing a capacitor bank, the capacitor uses the reactive power required at the inductive load. Changingthe power factor in consumers can change. To equalize the power change factor, the capacitor bank isassembled to work multiple steps / multi steps. Multi-step capacitor banks consist of several capacitorswith the same or different capacities. Based on the results of measurements before using the fuzzylogic method, the obtained power factor is 0.70 to 0.74 while the capacitors are installed from 12.5kVAR to 25 kVAR. After using the fuzzy logic controller method the power factor obtained is 0.80 to0.87 and capacitors using the 13.1 kVAR to 22.4 kVAR method. Whereas the power losses beforeusing the fuzzy logic controller method are 26220.5 watts. After using the fuzzy logic controllermethod, the power losses incurred were 23214.45 watts.

KETERSEDIAAN TENAGA LISTRIK SISTEM TRANSMISI 500 KV BALI PADA TAHUN 2030 Pasek Gede Guna Prabawa; I Ketut Wijaya; I Made Mataram
Jurnal SPEKTRUM Vol 3 No 2 (2016): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (807.753 KB)

Ketersediaan tenaga listrik sistem transmisi Bali perlu dianalisis untuk mengetahui Bali masih dapat memenuhi beban puncak dari Tahun 2015 sampai Tahun 2030. Keandalan sistem transmisi Bali dianalisis menggunakan alat bantu Electric Transient and Analysis Program(ETAP) power station untuk menentukan nilai System Average Intteruption Frequency Index(SAIFI) dan System Average Interruption Duration Index(SAIDI). Permalan beban puncak sistem transmisi Bali dilakukan mulai pada Tahun 2015 sampai dengan Tahun 2030. Ketersediaan tenaga listrik dianalisis menggunakan neraca daya dengan kondisi N-1 atau kondisi dimana pembangkitan terbesar keluar dari sistem. Analisis keandalan sistem transmisi Bali diperoleh, nilai SAIFI sebesar 1.4264 kali/tahun dan nilai SAIDI sebesar 0.7124 jam/tahun. Analisis ketersediaan tenaga listrik sistem transmisi Bali Tahun 2030 diperoleh, Bali masih aman dengan suplai tenaga listrik sebesar 3959 MW dan cadangan sebesar 1727.7 MW.

STUDI ANALISIS PERBANDINGAN METODE STARTING DIRECT ON LINE (DOL) DAN VARIABEL SPEED DRIVE (VSD) PADA MOTOR FAN UNTUK COOLING TOWER DI PT. RAPP (RIAU ANDALAN PULP PAPER) Martogi Ivan Putra Naibaho; I Ketut Wijaya; I Made Mataram
Jurnal SPEKTRUM Vol 8 No 1 (2021): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

The large starting current in the starting process has the potential to damage theinduction motor. In minimizing the risk of damage, proper starting methods are needed. TheDirect On Line (DOL) method is a starting method commonly used in induction motors becauseof its economical installation and high work efficiency. The starting method which also has goodwork efficiency is the Variable Speed Drive (VSD). There needs to be a comparative analysisbetween the two methods to find out how the performance of the two methods is.Research results, the ongoing performance of the two starting methods on the fanmotor for cooling towers shows that the performance of the VSD method is superior to that ofthe DOL method. Starting performance on an induction motor can be seen from the efficiencyand economic value of the DOL and VSD methods. This performance is of course taking intoaccount the current, rotation speed and the resulting output power.

PERANCANGAN FILTER PASIF UNTUK MEREDAM HARMONISA YANG DI BANGKITKAN OLEH BEBAN LAMPU HEMAT ENERGI (LHE) I Kadek Oka Darma Putra; I Ketut Wijaya; I Made Mataram
Jurnal SPEKTRUM Vol 6 No 3 (2019): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

The load in the form of energy saving lamps has a harmonic loss generated. The harmonic effect generated is caused by the use of non-linear power electronic components, resulting in a current that is made into a distorted sinusiodal wave which results in the formation of waves at multiple multiples of the fundamental frequency. Based on the negative impact caused by the energy saving light, the filter was designed to reduce the THDi percentage generated by the energy saving light, by installing a low pass RC filter on the energy saving light.

DESIGN POWER SYSTEM STABILIZER MENGGUNAKAN FUZZY LOGIC Ivo Salvador Soares Miranda; I Made Mataram; I Nyoman Setiawan
Jurnal SPEKTRUM Vol 1 No 1 (2014): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1664.095 KB)

Stabiltas merupakan kemampuan sistem untuk menjaga kondisi operasi seimbang dan kembali kekondisi operasi normal ketika terjadi gangguan. Penerapan power system stabilizer pada sistem tenaga mampu memberikan sinyal respon yang cepat atas berbagai kondisi gangguan dan mengupayakan tidak meluasnya jangkauan gangguan. Dalam mendesign power system stabilizer menggunakan robust fuzzy logic, menggunakan satu sinyal input yaitu kecepatan deviasi rotor. Hasil simulasinya dibandingkan dengan metode fuzzy logic dan kovensional. Studi simulasi menunjukan, design power system stabilizer menggunakan robust fuzzy logic memiliki nilai sinyal peak time dan settling time relatif kecil dibandingkan dengan metode fuzzy logic dan konvensional.

PERBANDINGAN KOMBINASI FUNGSI PELATIHAN JARINGAN SYARAF TIRUAN BACKPROPAGATION PADA PERAMALAN BEBAN Gede Teguh Pradnyana Yoga; Gede Dyana Arjana; I Made Mataram
Jurnal SPEKTRUM Vol 7 No 1 (2020): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Electricity system planning is very important for electricity providers (PLN). One of them is electricity load forecasting. Backpropagation artificial neural network is one of the best methods used in electricity load forecasting because it can give high accuracy values. In application, backpropagation neural networks often provide poor convergence speed values during the training process. Therefore, it is necessary to do various combinations of training functions to accelerate the convergence of network training. In this study, a backpropagation neural network model was developed with a combination of gradient descent training functions (traingdm, traingda, traingdx). The architecture of this network model uses 24 inputs, 1 hidden layer consisting of 16 neurons and 1 output. This model uses peak load data from Pemecutan Kelod Substation and the number of kWh sold in the South Bali area as an input variable. The results show that the best model of the neural network is using the traingdx training function. In this model, the MSE training is 1.03x10-8 and with a training convergence speed is 4 seconds and MAPE testing is 6.24% with a network accuracy is 93.75%.

ANALISIS BEBAN TAKSEIMBANG TERHADAP RUGI-RUGI DAYA DAN EFISIENSI TRANSFORMATOR KL0005 JARINGAN DISTRIBUSI SEKUNDER PADA PENYULANG KLUNGKUNG I Putu Gede Kartika; I Ketut Wijaya; I Made Mataram
Jurnal SPEKTRUM Vol 5 No 2 (2018): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Load imbalance will always occur in low voltage network systems (JTR), this is due to the uneven use of one phase load on customers coming from household elektrical appliances. The uneven use of loads will cause power losses in the network and drop in voltage. Load equalization on the network is one way to reduce power losses and voltage drop. This research was conducted by analyzing power losses and unbalanced load voltage drop and balanced load on the KL0005 transformer secondary distribution network on the Klungkung Feeder. Based on the result of the analysis, the power losses in the unbalanced load state obtained a result of 3.029 kW and the voltage drop in phase R was 6,1%, phase S was 3,5% and phase T was 0%, while the result of the power loss analysis balanced load obtained 2,9 kW and voltage drop in phase R is 2,6%, phasa S is 1,3% and phase T is 3% with difference in balanced load efficiency and unbalance load of 0,1%.

Co-Authors A. A. G. M. Pemayun A. Dharma A.A Ngurah Amrita A.A.D.P. Dewi Adi Prasetyo, Wibisono Agung, I Gusti Agung Putu Raka Agus Dharma Agus Dharma Fadil Arialdi Febryanto Simorangkir, Walter Willy Metyu G.M.A. Sasmita Gede Teguh Pradnyana Yoga Gilbert Mario Sembiring Goenardi, Rafael Bryan Gordon Arifin Sinaga Gusti Made Ngurah Christy Aryanata I Dewa Gede Wiadnya Wiantara I Gede Dyana Arjana I Kadek Oka Darma Putra I Ketut Wijaya I Made Satriawan I Made Teguh Winasatria I Made Widiarsana I Nengah Suweden I Nyoman Gunantara I Nyoman Setiawan I Putu Agus Semara Putra I Putu Ardana I Putu Ari Putra Wijaya I Putu Gede Kartika I Wayan Sukerayasa I Wayan Wijana I. K. Wijaya I.K.G. Harsana Ida Bagus Gd. Manuaba Ida Bagus Gde Manuaba Ida Bagus Gede Manuaba Ivo Salvador Soares Miranda Juan Evan Soaduon Tampubolon Juniar Doan Wihardono Karim Mewal, Karel A Made Dwi Noviantara Manuaba, Ida Bagus Gd. Martogi Ivan Putra Naibaho Ngakan Ketut Acwin Dwijendra Pande Ketut Sudiarta Pasek Gede Guna Prabawa Putu Arya Mertasana Putu Ayu Rhamani Suryadhi Rukmi Sari Hartati Sianturi, Roni Tjok Gede Indra Partha Wahyudin Wahyudin Wiadnya Wiantara, I Dewa Gede Yanu Prapto Sudarmojo

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