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All Journal International Journal of Electrical and Computer Engineering IAES International Journal of Robotics and Automation (IJRA) International Journal of Reconfigurable and Embedded Systems (IJRES) International Journal of Applied Power Engineering (IJAPE) International Journal of Advances in Applied Sciences Proceedings of Annual International Conference Syiah Kuala University - Life Sciences & Engineering Chapter TELKOMNIKA (Telecommunication Computing Electronics and Control) Sinergi Jurnal Informatika dan Teknik Elektro Terapan CESS (Journal of Computer Engineering, System and Science) JURNAL NASIONAL TEKNIK ELEKTRO JOURNAL OF ELECTRICAL AND SYSTEM CONTROL ENGINEERING Jurnal SOLMA RELE: Rekayasa Elektrikal dan Energi Jurnal Teknik Elektro Jurdimas (Jurnal Pengabdian Kepada Masyarakat) Royal TESLA: Jurnal Teknik Elektro Jurnal Elektro dan Telkomunikasi Vocatech : Vocational Education and Technology Journal Jurnal Vokasi MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering International Journal of Advances in Data and Information Systems Bulletin of Computer Science and Electrical Engineering (BCSEE) Accounting and Business Journal INVENTORY : Industrial Vocational E-Journal On Agroindustry International Journal of Engineering, Science and Information Technology Multidiciplinary Output Research for Actual and International Issue (Morfai Journal) Andalasian International Journal of Applied Science, Engineering, and Technology Mejuajua Jurnal Janitra Informatika dan Sistem Informasi Journal of Renewable Energy, Electrical, and Computer Engineering Andalas Journal of Electrical and Electronic Engineering Technology Sisfo: Jurnal Ilmiah Sistem Informasi Jurnal Energi Elektrik Multiverse: Open Multidisciplinary Journal Jurnal Fokus Elektroda (Energi Listrik, Telekomunikasi, Komputer, Elektronika dan Kendali) International Conference on Health Science, Green Economics, Educational Review and Technology (IHERT) Jurnal Litek : Jurnal Listrik Telekomunikasi Elektronika Jurnal Rekayasa elektrika Buletin Pengabdian Journal Of Artificial Intelligence And Software Engineering Jurnal Ilmu Komputer dan Sistem Informasi Jurnal Malikussaleh Mengabdi Jurnal Solusi Masyarakat Dikara Applied Engineering, Innovation, and Technology
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SIMULASI ANALISIS ALIRAN DAYA SUB SISTEM ACEH 150 KV MENGGUNAKAN SOFTWARE POWERWORLD SIMULATOR Hasibuan, Arnawan; Badrina, Badrina; Hasibuan, Ashari Zaini
JESCE (JOURNAL OF ELECTRICAL AND SYSTEM CONTROL ENGINEERING) Vol 3, No 1 (2019): Journal Of Electrical And System Control Engineering Agustus
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (929.647 KB) | DOI: 10.31289/jesce.v3i1.2812

Abstract

Analisis aliran daya merupakan studi yang mengungkapkan kinerja dan aliran daya (aktif dan reaktif) untuk keadaan tertentu ketika sistem bekerja. Analisis aliran daya memberikan informasi mengenai beban saluran transmisi, rugi-rugi daya, dan tegangan di setiap lokasi untuk evaluasi kinerja sistem tenaga listrik. Pada paper ini, dilakukan analisis aliran daya pada sistem kelistrikan bagian transmisi Aceh 150 kV menggunakan software Powerworld Simulator Vol.20. Untuk daya aktif dengan nilai paling tinggi yaitu pada bus Nagan Raya dengan nilai 152 MW, bus yang memiliki nilai daya aktif yang rendah yaitu pada bus Lhokseumawe sebesar 23 MW. Daya reaktif dengan nilai paling besar dipeorleh pada bus Lhokseumawe yaitu sebesar 65 MVAR, sedangkan nilai daya reaktif yang rendah yaitu pada bus Sigli sebesar -38 MVAR. Untuk tegangan pada bus Pangkalan Brandan, Lhokseumawe, PT Arun, Nagan Raya, Banda Aceh memiliki nilai tengan yang tinggi sebesar 138 KV, sedangkan yang paling rendah pada bus Tualang Cut memiliki tegangan yaitu 127,66 KV, rugi rugi daya pada transmisi 150 di Aceh dengan nilai terbesar yaitu pada saluran Bus Nagan Raya-Sigli dengan nilai sebesar 11 MW
PENENTUAN KAPASITAS KAPASITOR SHUNT DALAM PERBAIKAN COS Φ PADA GEDUNG WORKSHOP TEKNIK MESIN UNIMED DENGAN BEBAN YANG BERVARIASI Hasibuan, Arnawan; Ezwarsyah, Ezwarsyah; Nasution, Ilham Kurnia
JESCE (JOURNAL OF ELECTRICAL AND SYSTEM CONTROL ENGINEERING) Vol 3, No 2 (2020): Journal Of Electrical And System Control Engineering Februari
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (280.407 KB) | DOI: 10.31289/jesce.v3i2.3271

Abstract

Kualitas daya dalam sistem tenaga listrik merupakan hal yang penting untuk menjaga stabilitas sistem tenaga listrik pada jaringan. Peningkatan beban yang bersifat induktif dapat mengakibatkan pada penurunan faktor daya, peningkatan rugi-rugi jaringan, biaya yang besar dan lain-lain. Faktor daya yang buruk mengakibatkan konsumsi daya reaktif yang sangat besar. Untuk meningkatkan kualitas daya salah satunya adalah dengan memasang kapasitor shun pada sistem. Penentuan kapasitas kapasitor yang dipasang menggunakan hitung manual. Besar kapasitas kapasitor yang dipasang pada saat phasa R (135,93 ?F), S (104,19 ?F), dan T (242,19?F). Penambahan kapasitor shunt nilai kualitas daya yang diperbaiki dari rata-rata sebelum daya semu 8,78 kVA dan daya reaktif 9,87 kVAR setelah diperbaiki menjadi daya semu 3,63529 kVA dan daya reaktif 1,72908 kVAR. Kapasitor yang dipasang berjenis polar tipe kapasitor elektrolit dikarenakan memiliki nilai kapasitansi antara 1 uF ? 1 F dengan toleransi ± 50% dan tegangan kerja maksimum 400 volt terpolarisasi, memiliki kesetabilan yang cukup.
Economic Dispatch Analysis Using Equal Incremental Cost Method with Linear Regression Approach Hasibuan, Arnawan; Kurniawan, Robi; Isa, Muzamir; Mursalin, Mursalin
Journal of Renewable Energy, Electrical, and Computer Engineering Vol 1, No 1 (2021): March 2021
Publisher : Institute for Research and Community Service, Universitas Malikussaleh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/jreece.v1i1.3617

Abstract

The use of fuel is one thing that needs special attention, because most of the operating costs of a plant are fuel costs. One of the efforts to minimize the cost of generating fuel is called Economic dispatch. In this study, an Equal Incremental Cost method with a Linear Regression approach will be presented to obtain a minimum generation cost. The case taken is the Pangkalan Susu PLTU which operates two generating units. Based on the results of calculations using the Equal Incremental Cost method with the Linear Regression approach, the cost is -0.033% or an average of -13,111 $/hour.
Arduino Mega Based System Design for Sequence and Phase Difference Detection of Three-Phase Systems Nrartha, I Made Ari; Saputra, Ahmad Sandi Yayan; Supriono, Supriono; Hasibuan, Arnawan; Sayuti, M; Al-Ani, Waleed Khalid Ahmed
Journal of Renewable Energy, Electrical, and Computer Engineering Vol 2, No 1 (2022): March 2022
Publisher : Institute for Research and Community Service, Universitas Malikussaleh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/jreece.v2i1.6889

Abstract

In a three-phase system, the difference in the angle between the phases and the phase sequence of the system is very important to ensure the system functions normally and does not cause damage to the three-phase equipment connected to the system. Trigonometric formulas in multiphase systems are used to obtain the angle difference between the phases and the sequence of phases in the system. The trigonometric formula was tested in a simulation using MATLAB software, then applied to an Arduino Mega-based system. In the simulation, the data are two voltages vs. time with a certain phase angle difference, then using the trigonometric formula in the MATLAB program, the data is recovered from the phase angle difference and the direction of rotation of the two voltages. Based on the valid MATLAB simulation test results, the program algorithm is embedded in an Arduino Mega-based system equipped with 2 voltage sensors and a 2.4-inch TFT LCD. The Arduino Mega-based system has succeeded in detecting and visualizing in the form of a graph the angle difference between the phases and the direction of rotation of the three-phase system.
The Effect of Distributed Generator Injection with Different Numbers of Units on Power Quality in the Electric Power System Kurniawan, Robi; Nasution, Ardiansyah; Hasibuan, Arnawan; Isa, Muzamir; Gard, Muskan; Bhunte, Shrikant Vasantrao
Journal of Renewable Energy, Electrical, and Computer Engineering Vol 1, No 2 (2021): September 2021
Publisher : Institute for Research and Community Service, Universitas Malikussaleh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/jreece.v1i2.5236

Abstract

Distributed Generation (DG) is a small capacity generator located in the electricity distribution system and is usually placed on buses that are connected directly to the load. Placement of distributed generation is one of the technical efforts to reduce voltage drop and power losses in the system. In addition, load flow analysis is a study to plan and determine the amount of power in an electric power system. The results of power losses after adding distributed generation were the best in the fifth experiment on bus 149, where the system experienced a total loss of active power (P) previously of 720,822 kW, to 682,939 kW and total loss of reactive power (Q) previously of 530.02 kVar, to 405.835 kVar. From the results of the calculation of the power flow using ETAP software (Electrical Transient Analyzer Program). So, it can be concluded that the electrical network system can be said to be good. The results obtained are the more DG (wind turbine generator) that is input into the bus it will reduce the voltage drop that occurs. After simulating the overall voltage drop, it still meets the standards according to the results of the Text Report on ETAP.
Mitigation of high voltage induction effect on ICCP system of gas pipelines: a field case study Rohana Ismail; Arnawan Hasibuan; Muzamir Isa; Faizar Abdurrahman; Nurul Islami
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 17, No 6: December 2019
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v17i6.12493

Abstract

An analysis of the high voltage induction effect on the impressed current cathodic protection (ICCP) system on pipelines parallel toward high voltage power lines was employed in this research. Mitigation of high voltage effect throught human and environment is necessary to implemented. Direct current induction was used to increase the electrical potential of the gas pipeline, from Klumpang to sicanang area, Indonesia. During the mitigation process, the highest induction value was obtained 0.00574 KV which is previously was 0.01732 KV, and occurred at the limit of the allowable secure touch tension value of 0.015 KV. The data that acquire from the measurement of test point of ICCP underneath the transmission line revealed a comparison data between field measurements occurred of mitigation process. The direct current induction method is found to be safe for ICCP system and environment.
SIMULASI ANALISIS ALIRAN DAYA SUB SISTEM ACEH 150 KV MENGGUNAKAN SOFTWARE POWERWORLD SIMULATOR Arnawan Hasibuan; Badrina Badrina; Ashari Zaini Hasibuan
JOURNAL OF ELECTRICAL AND SYSTEM CONTROL ENGINEERING Vol 3, No 1 (2019): Journal Of Electrical And System Control Engineering Agustus
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jesce.v3i1.2812

Abstract

Analisis aliran daya merupakan studi yang mengungkapkan kinerja dan aliran daya (aktif dan reaktif) untuk keadaan tertentu ketika sistem bekerja. Analisis aliran daya memberikan informasi mengenai beban saluran transmisi, rugi-rugi daya, dan tegangan di setiap lokasi untuk evaluasi kinerja sistem tenaga listrik. Pada paper ini, dilakukan analisis aliran daya pada sistem kelistrikan bagian transmisi Aceh 150 kV menggunakan software Powerworld Simulator Vol.20. Untuk daya aktif dengan nilai paling tinggi yaitu pada bus Nagan Raya dengan nilai 152 MW, bus yang memiliki nilai daya aktif yang rendah yaitu pada bus Lhokseumawe sebesar 23 MW. Daya reaktif dengan nilai paling besar dipeorleh pada bus Lhokseumawe yaitu sebesar 65 MVAR, sedangkan nilai daya reaktif yang rendah yaitu pada bus Sigli sebesar -38 MVAR. Untuk tegangan pada bus Pangkalan Brandan, Lhokseumawe, PT Arun, Nagan Raya, Banda Aceh memiliki nilai tengan yang tinggi sebesar 138 KV, sedangkan yang paling rendah pada bus Tualang Cut memiliki tegangan yaitu 127,66 KV, rugi rugi daya pada transmisi 150 di Aceh dengan nilai terbesar yaitu pada saluran Bus Nagan Raya-Sigli dengan nilai sebesar 11 MW
PENENTUAN KAPASITAS KAPASITOR SHUNT DALAM PERBAIKAN COS Φ PADA GEDUNG WORKSHOP TEKNIK MESIN UNIMED DENGAN BEBAN YANG BERVARIASI Arnawan Hasibuan; Ezwarsyah Ezwarsyah; Ilham Kurnia Nasution
JOURNAL OF ELECTRICAL AND SYSTEM CONTROL ENGINEERING Vol 3, No 2 (2020): Journal Of Electrical And System Control Engineering Februari
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jesce.v3i2.3271

Abstract

Kualitas daya dalam sistem tenaga listrik merupakan hal yang penting untuk menjaga stabilitas sistem tenaga listrik pada jaringan. Peningkatan beban yang bersifat induktif dapat mengakibatkan pada penurunan faktor daya, peningkatan rugi-rugi jaringan, biaya yang besar dan lain-lain. Faktor daya yang buruk mengakibatkan konsumsi daya reaktif yang sangat besar. Untuk meningkatkan kualitas daya salah satunya adalah dengan memasang kapasitor shun pada sistem. Penentuan kapasitas kapasitor yang dipasang menggunakan hitung manual. Besar kapasitas kapasitor yang dipasang pada saat phasa R (135,93 μF), S (104,19 μF), dan T (242,19μF). Penambahan kapasitor shunt nilai kualitas daya yang diperbaiki dari rata-rata sebelum daya semu 8,78 kVA dan daya reaktif 9,87 kVAR setelah diperbaiki menjadi daya semu 3,63529 kVA dan daya reaktif 1,72908 kVAR. Kapasitor yang dipasang berjenis polar tipe kapasitor elektrolit dikarenakan memiliki nilai kapasitansi antara 1 uF – 1 F dengan toleransi ± 50% dan tegangan kerja maksimum 400 volt terpolarisasi, memiliki kesetabilan yang cukup.
PENGGUNAAN LED PADA LAMPU PENERANGAN JALAN UMUM UNTUK MENINGKATKAN EFISIENSI DAN PENGHEMATAN ENERGI LISTRIK Arnawan Hasibuan; Widyana Verawaty Siregar; Ikhsan Fahri
JOURNAL OF ELECTRICAL AND SYSTEM CONTROL ENGINEERING Vol 4, No 1 (2020): Journal Of Electrical And System Control Engineering Agustus
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jesce.v4i1.3978

Abstract

Perkembangan teknologi saat ini telah mengarahkan pemakaian lampu untuk PJU yang lebih efisien dan hemat energi. Teknologi tersebut adalah melalui penggunaan lampu LED (Light Emitting Diode) beserta luminernya. Teknologi LED merupakan salah satu teknologi yang berkembang secara cepat dengan potensi penghematan energi yang signifikan. Dalam kondisi tertentu, lampu PJU yang menggunakan teknologi LED dapat mengurangi penggunaan energi hingga 60% [5]. Keuntungan lain yang diperoleh dari efisiensi energi pada sistem PJU adalah untuk mendukung target pengurangan emisi gas rumah kaca (GRK). Dengan menggunakan faktor emisi rata-rata jaringan nasional sebesar 0,762 kg CO2e/kWh, diestimasikan sedikitnya sistem PJU Indonesia mengeluarkan emisi GRK sebesar 2,4 juta ton CO2 setiap tahunnya. 
Simulasi Pengoperasian Motor Pompa Air Berbasis Programmable Logic Control Elvy Sahnur Nasution; Muhammad Fitra Zambak; Suhendra Suhendra; Arnawan Hasibuan
INVENTORY: Industrial Vocational E-Journal On Agroindustry Vol 1, No 2 (2020): Published in December 2020
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/inventory.v1i2.28

Abstract

Maintain the availability of clean water in a multy-storey building make the water pump motor oprate continuously which can cause motor damage quickly, because there is no replacement system change of operation of the clean water pump motor conventional outomatic control. PLC (Programmable Logic Control) type Schneider Smart Relay Zelio Logic can be an opration to overcome clean water pump motor operation system to replace convensional automated system in to PLCbased automated systems. Simulation of the operational of a clean water pump motor in a multi-storey build use PLC software type Schneider Zelio Soft2 type SR2B121BD operate 3 clean water pump motors alternately between the source pump motor and the transfer pump motor, measurement of operating time transfer pump motor 1 with transfer pump motor 2 and the design of the alaram system trip to avoid damage to the motor using alarm rirens. Operating of PLC-based outomatic water pump motor very helpful oprator to operate the clean water pump motorized, where the operation of a clean water pump motor can be changed trought software as needed.
Co-Authors . Syafrudin Abdul Rahim, Siti Rafidah Abdul Rozak Abta, Armen Adi Setiawan Adi Setiawan Adriansyah, Fery Afrizal, Ari Agung Budi Muljono Ahmad Maulana Kamal Ahmada Qodri Ahmed Al-Ani, Waleed Khalid Ainal Mardhiah Aini, Nyak Qurratu Ajuirai, Ajuirai Akbar, Farhan Al Farizi, Reza Al-Ani, Waleed Khalid Ahmed Amalia, Syifa Amrina Rosyada Andian, Andian Andik Bintoro Andiko, Benny Anggi Chairani Apriansyah, Rian Ardan, M. Ardy Ardian Ardian Ari Afrizal Ari Nrartha Arianto, Sofyan AS, Nasruddin Ashari Zaini Hasibuan Asran Asran Asran Asran, Asran Asri Asri Azka R, Rifqy Azman, Azman AZMI, AZMI Azzanna, Maghriza Badriana, Badriana Baidhawi Baidhawi Baidhawi, B Bhunte, Shrikant Vasantrao Catra Indra Cahyadi Cindenia Puspasari Dedi Fariadi Desky, Muhammad Aulia Desti Sucipto, Fentisari Dewi Maya Sari Dewi Sartika Tambunan Dheo Pratama Dupli, Dupli Dwiputra, Muhammad Farhan Dy Ilham Elvy Sahnur Nasution Erwin Syahputra, Erwin Ezwarsyah Ezwarsyah Fachroji, Rizqan Fadhilati, Nyak Intan Fahmi, Bunga Luthfia Fahrian Roid Faisal Faisal Faizar Abdurrahman Fajar Syahbakti Lukman Fajar Syahbakti Lukman Fajar Syahbakti Lukman Farizi, Reza Al Ferona, Naiza Fidyatun Nisa Firwan Dani Fitra, M Gard, Muskan Gulschen Kerimzade Habib Muharry Yusdartono Hafidzuddin, Muhammad Hamdani Hamida Azzahro, Hasna Hasibuan, Ashari Zaini Hasibuan, Fairuz Raihanah Hasibuan, Muhammad Rafif Fadhlurrahman Hasibuan, Muhammad Rafif Fadlurrahman Hendri Cahyadi Hendrival, H Herman Fithra Hidayatullah, Ferdy Hilmi Hilmi Hilmi Husni Mubarak Hutagalung, Rizki Shobirin I Made Ari Nrartha I Made Ginarsa Ichsan Ichsan Idaryani Idaryani Ikhsan Fahri Ilham Kurnia Nasution Indra Nisja Indra Praditya Ira Devi Sara Irfansyah, Dedi Isa, Muzamir Ismail, Baharuddin Ismi Raihan Jintaka, Dhandis Rito Kamal, Ahmad Maulana Kartika Kartika Kartika Kartika Kartika Kerimzade G.S Kerimzade, Gulschen Khaidar, Al Kurniawan, Dicky Kuswoyo, Muhammad Riko Lapara, Muhammad Ilham Lukman, Fajar Syahbakti M Mursalin M Sayuti M. Rifai M. Sayuti Maghfirah, Riezka Maharani, Citra Putri Mahendra, Aldi Aryanugraha Maizuar, M Mariyudi Mariyudi Mariyudi, M Marzuki Maulana, Mirza Meidina Putri, Mifta Meutia, Rizka Dwi Misbahul Jannah Misbahul Jannah Misriana Misriana Misriana, Misriana Mohd Irwan Yusoff Mohd Irwan Yusoff Muchlis Abdul Muthalib Muhammad Daud Muhammad Daud muhammad ilham manishe Muhammad Syakirman Muhammad Yusril Zulfikar Muhammad, M Muhammad, Muhammad MULYADI Munawaroh, Nur Laela Munirul Ula Mursalin . Mursalin, M Mutammimul Ula Muthmainnah Muthmainnah Muzair Isa Muzamir Isa Muzamir Isa Muzamir Isa Muzamir Isa Nababan, Sabar Nanda Sitti Nurfebruary Naqi, M. Fathan Nasruddin AS Nasution, Ardiansyah Nasution, Elvy Sahnur Nasution, Ilham Kurnia Nate, Tajuk Tangke Novianty, Vivi Nratha, I Made Ari Nugroho, Septian Ilham Nura Usrina Nurdin Nurdin Nurdin, M. Daud Nurfadila, Nadia Nursan Junita, Nursan Nurul Islami, Nurul Nuryawan, Nuryawan Panji Aji Riha Wijayanto Pelawi, Zulfadli Prastia, Ramadhan Priagusno, Heri Puspasari, Cindeni Qausar, Muhammad Qurratu Aini, Nyak Rafif, Muhammad Rahmad Rahmad Rahmat Andria Raihan Putri Raihan, Ismi Ratri Candrasari, Ratri Razif, Razif Renno Kamal Putra Rizky Almunadiansyah Rizky Putra Fhonna Rizqan Fachroji Robi Kurniawan Robi Kurniawan Rofandy, Muhammad Yudha Rohana Ismail ROHANA ROHANA Roid, Fahrian Rony, Zahara Tussoleha Rosdiana Rosdiana Rosdiana Rosdiana Rusadi, Athirah Safina, Putri Anjali Sahal Mahfudz Saifannur Saifannur Salahuddin Salahuddin Salahuddin Salahuddin Sanatra, Dedi Sapto Nisworo Sapto Nisworo Saputra, Ahmad Sandi Yayan Sartika Yanti Sastra Wijaya, Reza Satriawan, Ivan Sayuti, M Sayuti, Muhammad Selamat Meliala Sembiring, Rizky Ramadhana Sendi Pria Ardana Setiawan, Rio Shobirin H, Rizki Silvia Silvia Siregar, Aria Maigawa Siregar, Widyana Verawaty Siregar, Wiedyana Verawaty Siti Rafidah Abdul Rahim Suhendra Suhendra Suhendra Suhendra Sukarwoto, Sukarwoto Sultan Sultan Supriono Supriono Surya Hardi, Surya Suryati Suryati Syafii . Syarifah Muthia Putri Syatriawan, Alfin Taneza, Erlan Tangke nate, Tajuk Taufiq Verawaty Siregar, Widyana Waldi, M. Fitra Waldi, Muhammad Fitra Widyana Verawaty Siregar Widyana Verawaty Siregar Yoga Tri Nugraha Yundari, Yundari Zahiri, Muhtadi Zainuddin Ginting Zainuddin, Abdullah Zambak, Muhammad Fitra Zara Yunizar Zulnazri, Z