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All Journal Jurnal SPEKTRUM Majalah Ilmiah Teknologi Elektro Tematik : Jurnal Teknologi Informasi Komunikasi Majalah Ilmiah Teknologi Elektro

Anak Agung Gede Maharta Pemayun

Program Studi Teknik Elektro, Fakultas Teknik, Universitas Udayana

Author-ID : 2932553

Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering

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ANALISIS EFESIENSI TRAFO DAYA TERHADAP PENGOPERASIAN BEBERAPA JENIS HARMONIC FILTER A.A Gede Maharta Pemayun; I Nym Budiastra; I W Rinas
Jurnal SPEKTRUM Vol 7 No 4 (2020): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Nonlinear load is one of the causes of harmonics in utility systems. To reduce harmonicdistortion that appears, usually in utility systems, Harmonic Filters are operated such as:passive filters, active filters, series hybrid filters and hybrid shunt filters. Harmonic distortion thatoccurs will increase losses in the utility system. Losses that appear will affect the efficiency ofthe Power transformer being operated. From the analysis results, the order of the best to worstfilter efficiency is hybride filter (? = 97.26%), active filter (? = 96.72%) and passive filter (? =95.73%).

Simulasi Pengaruh Pengoperasian Filter Aktif Shunt Terhadap Kenaikan Efisiensi Transformator di RSUD Kabupaten Klungkung A A Gede Agung Brama Dinanta; I Wayan Rinas; Anak Gede Maharta Pemayun
Jurnal SPEKTRUM Vol 6 No 2 (2019): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

The high level of harmonics found in the use of electrical energy can cause the system's power quality to get worse. the voltage and currentqwaveforms ofra distorted system giveerise to aneincrease inplosses that affect the efficiency0of the transformer. In this studyqa currenteTHD analysis will be carried out in Klungkung District Hospital. The simulation results will be compared with the IEEE 519-2014 standard in theconditions existing and the conditions at the operationeof the shunteactiveyfilter,analysis is alsoecarried out losses before and after the harmonics are affected. The results of theanalysis of Losses the existing conditions are losses of Phase R2.310 kW, Phase S of 2.363 kW, Phase T of 2.285 kW. The operating simulation of activefilters shunt obtained losses for phase R 2,141 Kw, Phases S 2,158 kW, Phase T 2,142 kW, so that the losses totalat the time of the existing amounted to 6,958 kW and after installation of active filters losses were total6,441 kW. The level of efficiency transformer in hospitals whenKlungkung existing amounted to 96.18% and after being fittedactive filter shuntefficiency of 96.46%.

Rekonfigurasi Saluran Distribusi 20 kV Untuk Mengurangi Rugi-Rugi Daya dan Jatuh Tegangan Pada Penyulang Abang I Putu Arya Suardika; I Gede Dyana Arjana; Anak Agung Gede Maharta Pemayun
Jurnal SPEKTRUM Vol 5 No 2 (2018): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

The feeder of Abang is one of forty-one feeders in State Electrical Company (PT PLN) of east Bali Area. This feeder uses a configuration of radial type that serves consumers in the area of Padangkerta, Bias, Batannyuh, Kikian, Ababi, Datah, Kubu, Nusu, Tianyar and Ban. It has a line transect that is 212,8 kms in leght with a total of distribution subtatations of 167 transformers and its peaks load reaches 5669 kW. This conditions results in drop voltage of 16,255% and and power losses of 10,12%. Feeder reconfiguration is accomplished by two ways: the cutting of the network that is diverted to Subagan feeder and the planning of Kubu feeder. Reconfiguration by using a method of cutting the network shows a voltage correction of Abang feeder with the initial drop voltage of 16,255% to 3.05% and the initial power losses of 10,12% to 3,49%. The improvement of voltage and power losses occurring in this feeder is not followed by Subagan feeder, which experienced an initial rise in the percentage of drops voltage of 6,78% to 27,615% and its initial power losses of 3,89% to 13,28%. While reconfiguration with Kubu's feeder planning is able to repair the drop voltage of Abang feeder to 2.94% and its power losses to 3,41%. Meanwhile, Kubu’s feeder in accordance with the results of running the program ETAP that the value of drop voltage is 2,95% and power losses is 2,73%.

STUDI KOORDINASI SISTEM PERALATAN PROTEKSI PADA PENYULANG PIDADA UNTUK MENDAPATKAN SETTING PENGAMAN YANG SELEKTIF Kadek Adiyaksa Pramana; I.B Gede Manuaba; A.A Gede Maharta Pemayun
Jurnal SPEKTRUM Vol 8 No 4 (2021): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

An electric power distribution system must be able to provide electricity to customers. So thatthe company as a provider is required to provide the best for its customers by increasing thereliability of the distribution system. The more customers who use electricity, the greater the possiblefault current, therefore it is necessary to calculate the protection in order to minimize the occurrenceof short circuit disturbances. The protection used on the Pidada feeder is Overcurrent Relay (OCR)and Ground Fault Relay (GFR), this protection relay is used to coordinate current settings inaccordance with applicable standards and can overcome short-circuit fault currents. In this research,a study of the coordination of the Pidada feeder's OCR and GFR settings was conducted using theDigSILENT PowerFactory 15.1.7 application. Calculations were carried out using the zone divisionmethod on the feeder. based on the results of the study, it was found that the Pidada feeder was 0.2s, the Bulu Indah recloser was 0.1 s and the Padang Udayana recloser was 0.02 s. Then on and theground fault relay (GFR) obtained results on the Pidada feeder 0.2 s, Bulu Indah recloser 0.1 s andPadang Udayana recloser 0.08 using standard inverse characteristics. The results of this study arein accordance with the applicable standards, where the standard used is IEC 60255 with a dradingtime of 0.3-0.5 seconds.

ANALISIS PENGGUNAAN DDC PADA SISTEM HVAC UNTUK MENINGKATKAN PENGHEMATAN KONSUMSI ENERGI DI HOTEL LANGHAM DISTRICT 8 SCBD JAKARTA Wibisana Hadi Chandra; I.B Alit Swamardika; A.A Gede Maharta Pemayun
Jurnal SPEKTRUM Vol 7 No 3 (2020): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Heating System, Ventilanting and Air Conditioning (HVAC) or air conditioning systemsbecome one of the needs in high rise buildings in order to increase comfort in the room,differences in the level of comfort of each individual makes the HVAC system changes in loadpatterns that can result in wasteful use of electrical energy. This study aims to determine thesavings in the use of electrical energy with the use of DDC in the HVAC system at the Langhamhotel. DDC can regulate HVAC system supporting devices such as cooling towers, condenserwater pumps, chilled water pumps and chillers that aim to reduce the performance of the chillersso that energy savings are obtained. By using 2 work operation methods, the results of thecalculation of energy use obtained at the side of the chiller Langham hotel, with manualoperation without the use of DDC obtained a total consumption cost of IDR 3,409,290 andautomatic work operations using DDC obtained a total consumption cost of IDR 2,601,990 sothat it is obtained saving percentage of 24%.

STUDI KOORDINASI KERJA RELE DIFERENSIAL DAN RELE RESTRICTED EARTH FAULT SETELAH UPRATING PADA TRANSFORMATOR II DI GI KAPAL I Made Dwi Cahyadi Jaya; I Gede Dyana Arjana; A.A Gede Maharta Pemayun
Jurnal SPEKTRUM Vol 5 No 1 (2018): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

The differential relay on the power transformer II in the Kapal Substation has a sensitivity setting of 30% to the nominal current of winding. Fault current that occurs below setting is not detected because the fault current has not reached the set limit. To overcome the fault current it is equipped with REF relay that has sensitivity below 30%. The analysis was performed by calculation method according to the relay setting manual. The results of sensitivity setting of REF relay is 382.75 A or fault point at 22.09% of the transformer winding, while the differential relay is 519.6 A or fault point at 30% of the transformer winding. The calculation result shows that the first to work is the REF relay than the differential relay. So the fault on the transformer winding is overcome by the REF relay.

STUDI KUALITAS PELAYANAN TERHADAP KEPUASAN PELANGGAN LISTRIK PRABAYAR PT. PLN (PERSERO) DISTRIBUSI AREA BALI SELATAN Nyoman Oka Arwata; I Wayan Rinas; A.A Gede Maharta Pemayun
Jurnal SPEKTRUM Vol 1 No 1 (2014): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

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Dari hasil studi pengolahan data mengenai kepuasan pelanggan listrik prabayar PT. PLN (Persero) Distribusi Area Bali Selatan, dinyatakan bahwa pelanggan yang telah menggunakan layanan listrik prabayar sudah merasa puas dengan pelayanan yang diberikan oleh PLN. Berdasarkan olah data statistik dengan software SPSS semua item pertanyaan yang digunakan pada kuesioner dinyatakan valid dan reliabel. Hasil pengukuran tegangan listrik yang dilakukan di rumah pelanggan didapatkan bahwa 100% tegangan yang diukur adalah tegangan normal dengan nilai 220 Volt. Berdasarkan urutan peringkat pada tingkat yang dirasakan yaitu item yang memiliki nilai rata-rata tertinggi adalah kontinuitas listrik (4,6%) dan item yang memiliki nilai rata-rata terendah adalah kecepatan pelayanan permohonan PB (Pasang Baru) / PD (Perubahan Daya) / PS (Penyambungan Sementara) (3,53%). Sedangkan urutan peringkat pada tingkat yang diharapkan yaitu item yang memiliki nilai rata-rata tertinggi adalah kontinuitas listrik (5%) dan item yang memiliki nilai rata-rata terendah adalah kejelasan dan kemudahan prosedur PB (Pasang Baru) / PD (Perubahan Daya) / PS (Penyambungan Sementara) (4,77%).

ANALISIS PEMELIHARAAN SALURAN DISTRIBUSI 20 KV DALAM KEADAAN BERTEGANGAN DI RAYON KUTA I N Tidi Wahyunitya S; A A Gede Maharta Pemayun; Antonius Ibi Weking
Jurnal SPEKTRUM Vol 4 No 1 (2017): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Pemadaman yang dilakukan untuk pekerjaan pemeliharaan, menyebabkan kerugian bagi konsumen dan PLN. Kerugian yang dialami adalah diskontinuitas pelayanan penyaluran energi listrik dan kWH yang diproduksi oleh PLN tidak dapat tersalurkan, maka dari itu perlu dilakukan pemeliharaan dalam keadaan bertegangan (PDKB). Sebelum melakukan pekerjaan bertegangan, perlu dilakukan studi kelayakan investasi peralatan bertegangan dari aspek ekonomis. Metode yang digunakan pada penelitian ini yaitu Net Present Value (NPV), Internal Rate Of Return (IRR) dan Net Benefit Cost Ratio (NET B/C), sehingga dapat diketahui besar nilai tingkat keuntungan melalui pemeliharaan bertegangan. Pemeliharaan dalam keadaan bertegangan (PDKB) di PT PLN (Persero) Rayon Kuta dapat menyelamatkan rupiah kWh sebesar Rp.8.941.763.694/ tahun. Sistem Average Interruption Duration Index (SAIDI) yang ditekan adalah 991,812243 menit/ pelanggan, untuk System Average Interruption Frequency Index (SAIFI) adalah 14.60000046 kali/ pelanggan, Net Present Value bernilai positif sebesar Rp.27.347.312.169, Internal Rate Of Return diperoleh sebesar 18,111%, sedangkan Net Benefit Cost Ratio diperoleh 6,462 lebih besar dari 1. Dengan demikian pekerjaan pe-meliharaan bertegangan secara teknis dan ekonomis sangat layak untuk dilaksanakan.

STUDI KUALITAS PELAYANAN LISTRIK TERHADAP KEPUASAN PELANGGAN PT PLN (PERSERO) RAYON TABANAN I Putu Supardiasa; AA Gede Maharta Pemayun; I Wayan Rinas
Jurnal SPEKTRUM Vol 4 No 2 (2017): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

The level of satisfaction with the service provided by PLN becomes the main priority that must be obtained by the customers. The purpose of this research is to know the quality of electricity service to customer satisfaction PT PLN (Persero) Rayon Tabanan. In this research using 100 respondents by using non random sampling method in sample selection. There are two methods used in the research is the method of statistical data and methods of observation. Statistical data is the result of respondents' assessment on importance performance analysis, validity test and Cartesian diagram. Observation is a direct observation in the study. The results of this study indicate that electricity customers Rayon Tabanan feel satisfied with the quality of electricity service PT PLN (Persero) Rayon Tabanan because the assessment of respondents on electrical continuity in the level that is felt in accordance with the expected customers with SPSS calculation of 4.59% and for the value the lowest of 3.49% is the speed of PB / PD / PS application.

STUDI ANALISIS UFR (UNDER FREQUENCY RELAY) PADA GARDU INDUK PESANGGARAN Bhrama Sakti K.P.; A.A. Gede Maharta Pemayun; I Gede Dyana Arjana
Jurnal SPEKTRUM Vol 6 No 2 (2019): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

The disruption of the electric power system due to overcurrent causes a trip to the 3rd generator of pesanggaran power plant . This causes a decrease in frequency due to the system losing its supply. Frequency interference can be detected automatically with UFR (Under Frequency Relay). The working principle of UFR is to compare the value of the system frequency and the value of the frequency setting. The comparison will determine how much load is released to balance the generator supply. This study analyzes UFR performance at Pesanggaran Substation by simulating a case of the generator being released so as to produce a decreased system frequency state. The method used is by comparing the ETAP simulation results and calculation results. The results of the comparison obtained the system recovery time when the conditions (gen1 tripped), (gen1 and gen2 tripped), and (gen1, gen2, and gen3 tripped), each is 1.171s; 4,531s; and 4,514s.

Co-Authors A A Gede Agung Brama Dinanta Antonius Ibi Weking Arya Surya Darma bagus widyananda yoga Bhrama Sakti K.P. I Dewa Made Laksana Putra I Gede Dyana Arjana I Kadek Dwi Yatna Prayoga I Made Alim Subawa I Made Dwi Cahyadi Jaya I Made Suartika I N Tidi Wahyunitya S I Nengah Sweden I Nyoman Budiastra I Nyoman Setiawan I Putu Arya Suardika I Putu Supardiasa I W Rinas I Wayan Arta Wijaya I Wayan Rinas I.B Gede Manuaba Ida Bagus A. Swamardika Ida Bagus Gede Manuaba Kadek Adiyaksa Pramana Kadek Suar Wibawa Made Benny Nurcahyadi Ni Luh Gede Midya Frangginie Nyoman Oka Arwata Putu Satria Abdi Wicaksana Sylvi Oktavia Ginting Wibisana Hadi Chandra

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