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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS) Jurnal Edukasi Elektro JTEV (Jurnal Teknik Elektro dan Vokasional ELKHA : Jurnal Teknik Elektro Jurnal Momentum SITEKIN: Jurnal Sains, Teknologi dan Industri JURNAL NASIONAL TEKNIK ELEKTRO PROtek : Jurnal Ilmiah Teknik Elektro Journal of Energy, Mechanical, Material and Manufacturing Engineering Seminar Nasional Teknologi Informasi Komunikasi dan Industri Multitek Indonesia : Jurnal Ilmiah JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI Jurnal Ecotipe (Electronic, Control, Telecommunication, Information, and Power Engineering) Indonesian Journal of Electronics, Electromedical Engineering, and Medical Informatics SNTE Jurnal Teknik Elektro
Zulfatri Aini
Universitas Islam Negeri Sultan Syarif Kasim Riau
Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Public Health Social Sciences Other

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Analysis of the Effect of an Installation of a Single Tuned Passive Filter on Harmonics and Distribution Transformers Zulfatri Aini; Zainal Ahnur; David Setiawan; Ahmad Fudholi
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 9, No 3: September 2018
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (744.067 KB) | DOI: 10.11591/ijpeds.v9.i3.pp1285-1294

Abstract

Non-linear loads on power systems cause harmonics and losses in distribution transformers. Results of the measurements on the two distribution transformers showed several phase transformer test-driven development (TDD) values above the standard SPLN D5.004-1: 2012. The values were 5.58% in the phase transformer, T 1 and 5.48% and 6.10% in S and T phases of the second transformer, respectively. In the calculations, the transformer losses due to harmonic currents were 1.64 kW in the phase transformer T 1, and 1.64 kW and 1.82 kW in the S and T phases of transformer 2, respectively. Designing a single-tuned passive filter based on the characteristics of the current, voltage, power, and power factor in the phase transformer with a value above the TDD standard can reduce the harmonics and losses. A filter with different specifications in each filtered phase transformer was obtained. The filter reduced the TDD value on the phase transformer T 1 to 3.55% and to 3.88% and 3.43% on the on phase T and S phases of transformer 2.  Moreover, it reduced the losses to 0.73 kW on phase transformer T 1, and 1.02 kW and 0.92 kW on the S and T phases of transformer 2. 
Analisis Kestabilan Tegangan dengan Menggunakan Static Synchronous Compensator (Statcom) Zulfatri Aini
SITEKIN: Jurnal Sains, Teknologi dan Industri Vol 9, No 2 (2012): Juni 2012
Publisher : Fakultas Sains dan Teknologi Universitas Islam Negeri Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24014/sitekin.v9i2.586

Abstract

Pengoperasian jaringan transmisi daya listrik saat ini dituntut untuk bekerja secara cepat,akurat dan handal, agar kebutuhan permintaan beban terpenuhi. Salah satu usaha untuk memenuhi tuntutan tersebut, dengan mejaga kestabilan tegangan pada jaringan. Untuk itu perlu suatu teknologi baru yang bersifat fleksibel dan sensitifitas tinggi yaitu, FACTS (Flexible AC Transmission System), dimana FACTS ini memiliki beberapa jenis dengan fungsi yang berbeda-beda sesuai fungsinya. Pada penelitian ini, jenis yang digunakan adalah Static Synchronous Compensator (STATCOM)Static Synchronous Compensator (STATCOM), merupakan peralatan penyedia daya reaktif yang dapat mengurangi rugi-rugi daya aktif sehingga kestabilan tegangan pada jaringan transmisi listrik terjaga. STATCOM dapat mengatur arus induktif atau pun kapasitif pada sistem jaringan arus bolak balik. Pada  penelitian ini, studi aliran daya dengan metode Newton-Raphson, yang dieksekusi dengan perangkat lunak Matlab.                Penelitian ini memperoleh hasil penurunan rugi-rugi total daya aktif pada jaringan transmisi sebesar 1% persen, dengan Profil tegangan semua bus berada dalam batasan yang telah ditetapkan (stabil). 
Analisis Peramalan Beban Listrik Jangka Pendek Wilayah Sumbar Riau dengan Menggunakan Model Autoregressive (AR) Zulfatri Aini
SITEKIN: Jurnal Sains, Teknologi dan Industri Vol 9, No 1 (2011): Desember 2011
Publisher : Fakultas Sains dan Teknologi Universitas Islam Negeri Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24014/sitekin.v9i1.601

Abstract

Tersedianya tenaga listrik yang mudah dalam memenuhi kebutuhan masyarakat serta menjamin kualitas pelayanannya, merupakan syarat penting untuk meningkatkan taraf kehidupan masyarakat, maka salah satu usaha yang dapat dilakukan adalah diperlukan peramalan energi listrik yang akan terjadi di Wilayah Sumbar-Riau masa datang. Penelitian ini dilakukan untuk memperoleh peramalan kondisi beban listrik yang terjadi di Sumbar-Riau. Data yang digunakan adalah data saat beban puncak tahun 2010, dengan menggunakan metode Autoregressive (AR). Sehingga dengan menggunakan metode AR didapatkan model untuk peramalan beban tahun berikutnya. Hasil penelitian menunjukan bahwa peramalan untuk lima hari berikutnya pada tahun 2011, adanya penurunan beban listrik dari data aktual saat beban puncak.
Analisis Penjadwalan Unit-Unit Pembangkit Listrik Dengan Menggunakan Metode Unit Decommitment (PT.PLN Wilayah Riau) Zulfatri Aini
Jurnal Momentum ISSN 1693-752X Vol 13, No 2 (2012): Volume 13 No 2 Agustus 2012
Publisher : ITP Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4466.8 KB)

Abstract

Besarnya kebutuhan energi listrik oleh masyarakat di wilayah Riau sehingga PT. PLN Persero Sektor Pembangkitan sebagai perusahaan listrik nasional dituntut untuk selalu menjaga ketersediaan, kesinambungan, kuantitas dan kualitas energi listrik yang baik serta harga yang terjangkau. Untuk memenuhi kebutuhan masyarakat akan listrik tersebut, PT. PLN Persero Sektor Pembangkitan akan membuat rencana operasi sistem tenaga listrik jangka pendek yaitu penjadwalan operasi unit-unit pembangkit listrik dengan tujuan menekan biaya bahan bakar seminimal mungkin. Dimana dalam sistem pengoperasian tenaga listrik, biaya bahan bakar merupakan biaya yang paling besar yaitu 60% dari biaya operasi keseluruhan. Penjadwalan operasi unit-unit pembangkit merupakan penentuan kombinasi unit-unit pembangkit yang hidup dan mati untuk memenuhi kebutuhan beban sistem pada suatu periode tertentu. Metode Unit Decommitment digunakan untuk menyelesaikan masalah penjadwalan operasi unit-unit pembangkit listrik, dimana pada kondisi awal semua pembangkit dianggap beroperasi pada tiap jamnya sehingga sistem memiliki supply yang berlebih akibatnya hasil operasi sistem tidak ekonomis oleh sebab itu beberapa unit harus dipertimbangkan untuk dimatikan pada periode tertentu. Berdasarkan perhitungan dan hasil analisis penjadwalan operasi pada hari senin 12 Desember 2011 diperoleh penghematan total biaya operasi bila dibandingkan dengan penjadwalan pada PT. PLN (Persero) Sektor Pembangkitan Pekanbaru yaitu sebesar Rp. 1.112.722.573,3297 (32,8%). Dari hasil perhitungan diatas dapat disimpulkan bahwa penjadwalan operasi unit-unit pembangkit listrik dengan metode Unit Decommitment dapat memberikan penjadwalan yang efisien dan efektif dalam menekan biaya operasi pembangkit listrik.
Model Fuzzy Linear Regression Untuk Peramalan Produksi Kelapa Sawit Riswan Efendi; Zulfatri Aini; Rika Susanti
Seminar Nasional Teknologi Informasi Komunikasi dan Industri 2020: SNTIKI 12
Publisher : UIN Sultan Syarif Kasim Riau

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Abstract

Peramalan terhadap produksi kelapa sawit sudah sering dilakukan dengan berbagai pendekatan. Namun tidak mudah mencapai akurasi peramalan yang tinggi untuk data jumlah kecil dan jangka panjang. Penelitian ini bertujuan untuk menentukan model peramalan produksi kelapa sawit dengan metode Fuzzy Linear Regression (FLR). Metode tersebut dibentuk menggunakan triangular fuzzy number simetris berdasarkan standar deviasi data. Dalam penelitian ini, digunakan data jumlah produksi kelapa sawit sebagai variabel terikat (Y) dan faktor-faktor yang mempengaruhinya yaitu pemupukan (X1­), tenaga kerja (X2­) dan rata-rata curah hujan (X3). Hasil analisa menunjukkan bahwa model peramalan terbaik yaitu dengan pendekatan metode FLR menggunakan konstanta untuk jumlah produksi yaitu  dengan nilai MAPE 35.01%.
Model Peramalan Distribusi Listrik Menggunakan Fuzzy Linear Regression Riswan Efendi; Rika Susanti; Zulfatri Aini
Seminar Nasional Teknologi Informasi Komunikasi dan Industri 2020: SNTIKI 12
Publisher : UIN Sultan Syarif Kasim Riau

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Abstract

Semakin besarnya kebutuhan energi listrik terutama disektor rumah tangga mengakibatkan semakin bertambahnya distribusi listrik yang harus dipenuhi oleh PLN-Indonesia. Sementara model peramalan yang akurat sangat diperlukan untuk distribusi listrik tersebut. Tujuan penulisan artikel ini adalah untuk menentukan model peramalan distribusi listrik sektor rumah tangga menggunakan fuzzy linear regression. Pembentukan model diawali dengan transformasi data single point menjadi bentuk triangular fuzzy number simetris berdasarkan aturan Sturges. Data yang digunakan adalah distribusi listrik sektor rumah tangga sebagai variabel terikat . Sedangkan variabel bebas merupakan jumlah pelanggan PLN dan jumlah kapasitas terpasang menurut jenis pembangkit (dan ). Hasil analisa data menunjukkan bahwa, model peramalan terbaik FLR yaitu model menggunakan konstanta                                                                                     dengan nilai MAPE 0,99%. Akurasi model ini juga dipengaruhi oleh transformasi data berdasarkan interval Sturges yang cukup baik.
Reliability Improvement Using Sectionalizer with Section Technique Method liliana liliana; Zulfatri Aini; Hanif Naufal Qasthari
Seminar Nasional Teknologi Informasi Komunikasi dan Industri 2021: SNTIKI 13
Publisher : UIN Sultan Syarif Kasim Riau

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Abstract

Unreliability in the 20 kV distribution system at PT. PLN (Persero) Rayon Rumbai feeder Rusa is more caused by disturbances that occur. During 2020 this feeder was recorded to experience the highest disturbance of 83 times, causing the system to experience frequent blackouts. This study seeks to identify and improve the reliability of the system in the feeder. The reliability of the system can be calculated and analyzed in more detail with the Section Tehnique method. This method can identify reliability by breaking the system into several sections so that the reliability of each section can be known. The increase in reliability is done by adding a sectionalizer to a system that has low reliability, there are two scenarios that are carried out in placing this sectionalizer correctly to produce better reliability. The results of the calculation of the reliability of each section of the system using the Section Technique method have been obtained, the average value of each reliability index is SAIFI 11.231 (f/customer.yr), SAIDI 30.55 (hr/customer.yr), CAIDI 11.015 (hr/customer interruption). ). The results of this index calculation do not meet the standards of SPLN 68-2 1986 with SAIFI 3.2 (f/customer.yr) and SAIDI 21.9 (hr/customer.yr). The reliability improvement was carried out by implementing sectionilizer on the feeder and the reliability index was obtained with SAIFI values 9.8185 (f/customer.yr), SAIDI 27.5292 (hr/customer.yr) and CAIDI 11.223 (hr/customer interruption) with an increase in SAIFI percentage. by 10.4%, SAIDI 8.8% and CAIDI 0.37%. With the addition of a sectionilizer, it is very helpful in increasing reliability, although it still does not meet the expected standard values.Unreliability in the 20 kV distribution system at PT. PLN (Persero) Rayon Rumbai feeder Rusa is more caused by disturbances that occur. During 2020 this feeder was recorded to experience the highest disturbance of 83 times, causing the system to experience frequent blackouts. This study seeks to identify and improve the reliability of the system in the feeder. The reliability of the system can be calculated and analyzed in more detail with the Section Tehnique method. This method can identify reliability by breaking the system into several sections so that the reliability of each section can be known. The increase in reliability is done by adding a sectionalizer to a system that has low reliability, there are two scenarios that are carried out in placing this sectionalizer correctly to produce better reliability. The results of the calculation of the reliability of each section of the system using the Section Technique method have been obtained, the average value of each reliability index is SAIFI 11.231 (f/customer.yr), SAIDI 30.55 (hr/customer.yr), CAIDI 11.015 (hr/customer interruption). ). The results of this index calculation do not meet the standards of SPLN 68-2 1986 with SAIFI 3.2 (f/customer.yr) and SAIDI 21.9 (hr/customer.yr). The reliability improvement was carried out by implementing sectionilizer on the feeder and the reliability index was obtained with SAIFI values 9.8185 (f/customer.yr), SAIDI 27.5292 (hr/customer.yr) and CAIDI 11.223 (hr/customer interruption) with an increase in SAIFI percentage. by 10.4%, SAIDI 8.8% and CAIDI 0.37%. With the addition of a sectionilizer, it is very helpful in increasing reliability, although it still does not meet the expected standard values.
Analysis of Imbalance Loads and Losses Based on The Largest Loading by 3 Units of 3 Phase Distribution Transformer Zulfatri Aini; Esa Mutari; Liliana Liliana; Oriza Candra
JTEV (Jurnal Teknik Elektro dan Vokasional) Vol 7, No 1 (2021): JTEV (Jurnal Teknik Elektro dan Vokasional)
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (244.709 KB) | DOI: 10.24036/jtev.v7i1.111965

Abstract

The imbalance load of distribution transformers often occurs.This is due to the fact that the load time amongst consumers is not the same, so that there is a difference in the value for each R, S, and T phase. The value difference of the phase causes overload in several phases so as the current emerges in neutral transformers. The current flowing in the neutral transformers causes the losses. In this research, the identification of the overload and the calculation of the distribution transformer load with the IEC reference standard which is allowed for 80% and the calculation of the imbalance transformer load with the 5% standard, then the losses resulting from the presence of neutral currents were carried out. There are three transformers in the Hangtuah feeder that have a load exceeded the standard, namely the DRI 0157, DRI 0241, and DRI 0065 transformers. The calculations for the three transformers are taken from measurement data in the form of voltage and current values for each phase during the daytime and nighttime and are simulated using ETAP 12.6.0 software. The symmetrical component method was used to obtain the imbalance value of the transformer load based on the measurement results and the ETAP simulation. The result of this research is the imbalance load occured in the three transformers. DRI 0241 is the transformer that has the largest percentage of an imbalance load at night. At nighttime, based on the measurement results of the DRI 0241, the transformer load is 80% and 65% at daytime, while for the imbalance load at nighttime and daytime are 32.2% and 29.8%, respectively. The greater the loading of the transformer, the larger the imbalance loading of transformer becomes. The current in neutral transformer generated losses in the amount of 45 A and 2.4% at nighttime while for 33 A and 1.2% at daytime. The neutral current affects the values of losses that the higher it is, the bigger the losses appear in a transformer.
Analisis Pengaruh Ketebalan dan Jenis Inti Besi Rotor dan Stator terhadap Karaktersitik Generator Sinkron Magnet Permanen 18S16P Fluks Radial Raditya Saputra; Zulfatri Aini
SITEKIN: Jurnal Sains, Teknologi dan Industri Vol 18, No 2 (2021): Juni 2021
Publisher : Fakultas Sains dan Teknologi Universitas Islam Negeri Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24014/sitekin.v18i2.12860

Abstract

People's energy needs are always increasing and electricity supply in Indonesia is still dominated by non-renewable energy sources, namely fossil fuels. The use of fossil fuels will be exhausted if exploited continuously. To overcome this problem is to utilize renewable energy sources. Besides being able to reduce the use of fossil fuels, renewable energy can reduce environmental impact. One form of renewable energy source is wind. Wind is able to drive a turbine and generate electricity from a generator. Permanent Magnet Synchronous Generator is a generator that consists of two main components is Rotor and Stator. PMSG is modeled using software with the Finite Element Method (FEM) method. Of course, to get higher characteristics, the generator must have the right material and geometry. This research varied the thickness and types of iron cores in the rotor and stator to be able to produce an output power value of 1000 watts / 1 kW. This current value is used to get the value; voltage, torque, input power, output power and efficiency. The variation of the thickness of the rotor and stator iron core is at 37 mm, 52 mm and 80 mm and for the type of iron core the materials used are M1000-100A and Carpenter: Silicon Steel. Carpenter iron core type: Silicon Steel. The biggest current and voltage are produced by Carpenter's core type: Silicon Steel with 80 mm thickness with a value of 17.44 A and 52.31 V.
Analysis of the Effect of Magnetic Thickness and Rotating Speed on PMSG 24 Slot 16 Pole Characteristics Achiruddin Lubis; Zulfatri Aini
PROtek : Jurnal Ilmiah Teknik Elektro Vol 10, No 3 (2023): PROtek : Jurnal Ilmiah Teknik Elektro
Publisher : Program Studi Teknik Elektro Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/protk.v10i3.6059

Abstract

Wind energy is one of the alternative energies that can overcome global warming caused by fossil energy. Permanent Magnet Synchronous Generator (PMSG) has a higher efficiency compared to other types of generators. The previous permanent magnet synchronous generator model was only able to produce efficiency at a rotational speed of 500 rpm of 67.30% and at a rotational speed of 1500 rpm of 80.9%, so further research is needed to get a higher efficiency value. This study aims to analyze the effect of magnetic thickness and rotational speed on PMSG characteristics and obtain a higher efficiency value. Using variations in magnetic thickness of 7.5mm, 9 mm, and 10 mm and variations in rotational speed of 500 rpm, 1000 rpm,  and 1500 rpm using software based on Finite Element Methode, this study obtained the results of the largest current, voltage, input power, and output power at a magnetic thickness of 10mm with a rotational speed of 1500 rpm of 20.40 A, 204.06 V, 4979.60 W, and 4266.21 W, with the greatest efficiency being in the magnetic thickness of 9mm and 10 rpm of 89.20%
Co-Authors Achiruddin Lubis Ahmad Faizal Ahmad Fudholi Andika, Rizki Aprialdi, Rahmat Candra, Oriza David Setiawan Dian Mursyitah Diar, Abdurahman Dila Marta Putri Efryansah, Randra Agustio Eng, Ewe Win Esa Mutari Hanif Naufal Qasthari Harda Arya, Engla Liliana Liliana liliana liliana Liliana Liliana Lubis, Achiruddin Lubis, Arul Anwar Maharmi, Benriwati Muhammad Guido Randa Febiant Guido Nanda Putri Miefthawati Nanda Putri Miefthawati Putra, Nanda Okta Raditya Saputra Ramadhan, Muhammad Fiqri Rika Susanti Riswan Efendi Sepannur Bandri Sri Basriati Sudarmadi, Ardiansyah Suka Alaqsa, Tengku Reza Sumarta, Prima Sutoyo Sutoyo Tengku Reza Suka Alaqsa Tengku Reza Suka Alaqsa Tengku, Tengku Reza Suka Alaqsa Ullah, Aulia Zainal Ahnur