Claim Missing Document
Check
Articles

Analysis of Power Generation and Distribution of Hybrid Energy for Electricity Loads in Batakan Village Ramadhani, Ahmad Zaki; Facta, Mochammad; Handoko, Susatyo
Jurnal ELTIKOM : Jurnal Teknik Elektro, Teknologi Informasi dan Komputer Vol. 7 No. 1 (2023)
Publisher : P3M Politeknik Negeri Banjarmasin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31961/eltikom.v7i1.767

Abstract

The need for electrical energy continues to increase over time. However, in Indonesia power plants are still dominated by fossil fuel power plants, and there are still many areas without access to electricity. The use of renewable energy is needed to replace fossil fuels considering that fossil fuels can run out one day. The coastal area of Batakan Village in Tanah Laut Regency, South Kalimantan Province, was chosen as the focus location for conducting hybrid power plant simulations because this village is located in a coastal area where wind and solar energy sources are abundant. Batakan Village is approximately 40 km from Pelaihari City. Medium-voltage network transmission system (JTM) is supplied from Pelaihari City, and it is almost certain that this village experiences large power losses over long distance. This power loss will be detrimental if an effort is not made to reduce it. The purpose of this research is first to determine the optimal hybrid power plant configuration design to reduce power loss in the electricity system in Batakan Village. Second, it will analyze the power loss of the hybrid power plant system in Batakan Village, and finally, this research is going to analyze the investment feasibility of the hybrid power plant system in Batakan Village. In this study, the design of renewable energy plants, such as solar power plants (PLTS) with a total capacity of 406.1 kW and wind power plants (PLTB) with a total capacity of 125 kW, and the electricity network (grid system) are used together in a hybrid power generation system. The ETAP software was used to analyze the power losses of the hybrid power generation system, while the HOMER software was used to determine the net present value (NPV) and cost of energy (COE) of the hybrid power generation system. The results show that the configuration of the solar, wind, and grid systems is the most optimal. It is obtained from the results of ETAP simulations that have been carried out during average load and peak load conditions that by including the Solar Power Plant and Wind Power Plant power losses in the electricity system in Batakan Village can be reduced from the previous one using the system configuration only connected to the PLN power grid (grid system only). The total power losses incurred was 269.1 kW of active power and 1613.5 kvar of reactive power at average load reduced to 266.9 kW of active power and 1568.9 kvar of reactive power. At peak load the total power losses were 423.4 kW of active power and 2573.0 kvar of reactive power and they deceased to 41.,5 kW of active power and 2510.5 kvar of reactive power. In terms of investment, the COE value decreased by IDR 111, and the NPC decreased by IDR 6,600,000,000 at the average load. At the peak load COE decreased by IDR 88, while NPC by IDR 7,000,000,000. The return of investment (ROI) value is 13.2%, which indicates that the investment is still in the profitable stage.
PERANCANGAN PERALATAN PEMBANDING PENGUKURAN PARAMETER PASIF RESISTANSI DAN REAKTANSI DARI MATERIAL MENARA TRANSMISI 150 KV Ardiansyah, Regas; I., M. Lutfi; S., Sefanda Dwi; Facta, M.; ., Sudjadi; Z., Ajub Ajulian
Transient: Jurnal Ilmiah Teknik Elektro TRANSIENT, VOL. 13, NO.1, MARET 2024
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/transient.v13i1.1-10

Abstract

Impedansi menara transmisi menjadi parameter yang harus dipertimbangkan sebelum pembangunan jaringan transmisi. Terbatasnya alat ukur menjadi kendala melakukan pengukuran langsung terhadap menara transmisi secara utuh. Dengan merancang rangkaian ekivalen menara yang akan diukur, pengukuran dapat dilakukan dengan mengukur resistansi dan reaktansi sampel material menara terlebih dahulu. Peralatan pembanding pengukuran parameter pasif resistansi dan reaktansi merupakan suatu sistem yang disusun dari beberapa komponen dan alat ukur yang dirangkai. Rangkaian ini terdiri dari rangkaian pengaman inrush, autotransformator variabel, dan beberapa komponen penyusun lain. Dengan menginjeksi suatu material menara transmisi 150 kV akan menjadi langkah awal dalam mengetahui resistansi dan induktansi. Material yang diinjeksi akan dihubungkan dengan osiloskop menggunakan probe tegangan dan probe arus untuk kemudian diamati perbedaan waktu antara gelombang tegangan dan gelombang arus, dihitung sudut fasenya, dan dihitung resistansi serta induktansinya. Dengan adanya mekanisme peralatan ini akan menjadi pembanding bagi alat ukur LCR meter. Dengan rancangan yang lebih mudah dirakit dan mudah dijumpai di lapangan, ini akan menjadi alternatif apabila LCR meter tidak tersedia.
Analisis Perancangan dan Pemasangan PLTS Kapasitas 1,1 MWp pada Pabrik Farmasi di Kota Semarang NUGRAHA, RIZKY ADI; FACTA, MOCHAMMAD; SYAKUR, ABDUL
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 12, No 2: Published April 2024
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v12i2.378

Abstract

ABSTRAKBiaya utilitas adalah salah satu komponen terbesar dalam biaya produksi sebuah pabrik farmasi. Dari total biaya utilitas, 63% berasal dari pemakaian energi listrik. Jika energi listrik tersebut dapat diperoleh dari Energi Baru Terbarukan (EBT) hingga 10.65%, maka akan berdampak positif bagi biaya produksi. EBT yang dapat dipakai adalah Pembangkit Listrik Tenaga Surya (PLTS) dengan memanfaatkan atap gedung produksi. Selain penghematan perlu diperhatikan dampak interkoneksi PLTS terhadap arah aliran daya, kestabilan sistem kelistrikan saat gangguan, dan potensi terhadap sambaran petir ke instalasi PLTS. Optimalisasi desain PLTS dengan Helioscope menunjukkan kapasitas PLTS yang dapat dipasang hingga 1,1 MWp. Hasil analisis aliran daya dengan ETAP menunjukkan bahwa daya reaktif yang mengalir balik ke jaringan PLN sangat kecil. Sistem kelistrikan dengan injeksi daya dari PLTS ini dapat stabil setelah mengalami gangguan. Berdasarkan metode sudut perlindungan maka untuk 9 bangunan yang dipasang PLTS tersebut diperlukan proteksi petir level IV.Kata kunci: energi surya, kestabilan sistem tenaga, aliran daya, perlindungan sambaran petir ABSTRACTUtility costs are one of the largest components in the production expenses of a pharmaceutical plant. Among utility costs, 63% of total cost takes from electricity consumption. If this electricity can be supplied from Renewable Energy (RE) up to 10.65%, it will have a positive impact on production costs. The viable RE source is PhotoVoltaic Solar Power (PV) by utilizing the building's production area rooftop. The others impact must be given to the PV system's effects on power flow direction, electrical system stability during disturbances, and susceptibility to lightning strikes on the PV installation. Optimation result of the PV system design using Helioscope indicates a capacity of up to 1,1 MWp. Power flow analysis using ETAP results demonstrate minimal reactive power flowing back to the grid. The electrical system with power injection from the PV system regains stability after disturbance. Based on the angle protection method, a lightning protection level IV is required for the 9 buildings with PV systems.Keywords: Solar energy, power system stability, power flow, lightning strike protection.
Energy saving of variable frequency drive in dust collector fan motors in the smelting process at the steel industry Turinno, Sarwo; Facta, Mochammad; Cahyadi, Cahyadi
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 16, No 2: June 2025
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v16.i2.pp1399-1408

Abstract

The dust removal system is a crucial component in the steel industry, designed to eliminate dust and gas generated during the smelting process. Its primary purpose is to prevent personnel in the surrounding area from inhaling harmful dust particles. A dust collector system is used to carry out this process before being removed from the chimney to the outside air. In the operation of the dust collector, there is still limited attention given to optimizing its operation to meet the needs of its load, where the dust collector still operates at maximum capacity continuously when the dust load decreases due to the smelting process, in an idle state. Setting the rotational speed of the fan motor to produce an airflow rate as required using a variable frequency drive (VFD). The Motor speed was varied in low and high conditions at 322 rpm and 879 rpm. The research results showed that the average airflow rate for the speed of 322 rpm was 150,326 m³/h, and it has 384.193 m³/h at the speed of 879 rpm. The energy savings obtained from the application of VFD to control the airflow rate value are 1,253,544 kWh/year, and the cost savings obtained are IDR 1,249,457,447 per year.
A review of the state of art and prospects in energy storage systems for energy harvesting applications Sutikno, Tole; Arsadiando, Watra; Tan, Chee Wei; Facta, Mochammad
International Journal of Advances in Applied Sciences Vol 13, No 2: June 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijaas.v13.i2.pp447-458

Abstract

Due to the increasing trend in worldwide energy consumption, many new energy technology systems have emerged in the past decades. The implementation of energy storage system (ESS) technology in energy harvesting systems is significant to achieve flexibility and reliability in fulfilling the load demands. In this paper, several types of energy storage technologies available in the market are discussed to view their benefits and drawbacks. The main aim of this review is to provide a platform for readers especially those who seek to know more about ESS at a glance, to decide which ESS technology is best suited for any specific applications. This review would serve as a base for the initial state to make the right decision by referring to the criterias and characteristics of energy resources to get the optimal ESS technology. A comprehensive comparison among the various types of ESS technologies is outlined and elaborated to provide a better and clearer picture to the readers. Last but not least, the relevant recommendations and alternative choices for services related to the harvesting of solar PV energy are described too. It is hoped that the findings of this review article may be helpful to all readers interested in ESS technology.
Penelitian Penyimpangan Alat Ukur Energi Listrik untuk Beban Rumah Tangga Andi, Heri; Facta, Mochammad
TRANSISTOR Elektro dan Informatika Vol 5, No 2 (2023)
Publisher : Universitas Islam Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/ei.5.2.%p

Abstract

Alat ukur energi listrik seperti kWh meter merupakan alat  untuk mengukur energi listrik yang sering digunakan oleh konsumen. Alat ukur ini mengukur transaksi energi listrik berdasar daya aktif dalam satuan Watt persatuan waktu. Alat ukur ini didesain untuk memiliki kinerja yang baik apabila memenuhi kriteria gelombang arus dan tegangan berupa sinusoidal murni agar tidak ada satupun pihak yang dirugikan akibat adanya kesalahan dalam  proses pengukuran. Namun saat ini pelanggan rumah tangga yang cukup dominan di Indonesia umumnya memakai beban non linear bercampur dengan beban linier sehingga hal ini dapat menimbulkan masalah yang dapat mempengaruhi hasil pengukuran energi  listrik sebenarnya. Tujuan dari tulisan ini adalah mengemukakan hasil penelitian ini untuk melihat dampak harmonisa terhadap kesalahan pengukuran energi listrik pada kWhmeter Analog. Beban non linier yang terdapat di rumah – rumah dengan daya listrik 450 VA dan 900VA menimbulkan harmonisa. Harmonisa ini berdasarkan penelitian yang dilakukan dalam makalah ini, ternyata  dapat mengakibatkan perubahan perubahan komposisi daya. Komponen harmonisa menghasilkan daya reaktif harmonisa ke sistem, sehingga daya reaktif total pada sistem akan meningkat. Hasil penelitian menunjukkan semakin besar nilai THD arus maka semakin besar pula persentase kesalahan kWh meter analog jika dibandingkan dengan peralatan Power Quality Analyzer (PQA)
Siklus Harmonisa di Pelanggan Rumah Tangga untuk Beban Hibrida Facta, Mochammad; Abrianto, Bagus Hari
TRANSISTOR Elektro dan Informatika Vol 5, No 2 (2023)
Publisher : Universitas Islam Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/ei.5.2.64-69

Abstract

Peralatan listrik yang digunakan pada rumah tangga saat ini semakin bervariasi seperti komputer, power supply, Air Conditioner (AC), lampu LED, dan lampu LHE. Banyaknya peralatan listrik atau beban bersifat non linier menyebabkan kualitas daya listrik menurun. Parameter kualitas daya listrik terdiri dari keseimbangan arus dan tegangan, harmonik (THD arus dan THD tegangan), faktor daya, dan profil tegangan. Munculnya harmonisa dalam suatu instalasi rumah tangga juga dipengaruhi dengan siklus penggunaan peralatan listrik yang dalam kondisi saat ini merupakan beban campuran atau hibrida. Beban hibrida yang dimaksud merupakan campuran dari beban non linier dan beban linier. Dalam makalah ini dikemukakan hasil penelitian yang menunjukkan bagaimana komposisi daya yang ditarik oleh beban rumah tangga dalam suatu siklus yang umumnya terjadi secara keseharian khususnya untuk beban rumah tangga berdaya 450 VA dan 900 VA
Portable solar photovoltaic systems for post-disaster emergency power supply: a comprehensive review Sutikno, Tole; Aji, Wahyu Sapto; Facta, Mochammad; Purnama, Hendril Satrian; Wahono, Tri
International Journal of Applied Power Engineering (IJAPE) Vol 14, No 4: December 2025
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijape.v14.i4.pp1071-1084

Abstract

Natural disasters frequently disrupt electrical infrastructure, creating critical challenges for emergency response, healthcare delivery, and community recovery. Portable solar photovoltaic (PV) systems have emerged as a sustainable and rapidly deployable solution for off‑grid energy provision in disaster‑affected regions. This review provides a comprehensive synthesis of portable PV technologies for post‑disaster applications, encompassing system architectures, component selection, deployment configurations, and operational performance. Particular emphasis is placed on DC‑first designs, modular scalability, energy storage integration, and IoT‑enabled monitoring, which collectively enhance efficiency, reliability, and usability under harsh environmental conditions. The analysis highlights persistent challenges related to energy efficiency, storage resilience, system standardization, and user accessibility, while underscoring the importance of integration into broader emergency energy ecosystems. Research gaps are identified in areas such as efficiency optimization, human‑centered design, and scalability, providing guidance for the development of next‑generation portable PV systems. By consolidating technical and operational insights, this review establishes a foundation for advancing portable PV systems as robust emergency energy solutions, bridging the gap between immediate relief and long‑term resilience in disaster‑prone regions.
Energy resilience in disaster-prone regions: the role of portable and modular solar power systems Sutikno, Tole; Facta, Mochammad; Aji, Wahyu Sapto; Handayani, Lina; Arsadiando, Watra; Purnama, Hendril Satrian
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 16, No 4: December 2025
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v16.i4.pp2879-2894

Abstract

Energy resilience is a critical requirement in disaster-prone regions, where electrical infrastructure is highly vulnerable to natural hazards and prolonged power outages. Portable and modular solar power systems have emerged as promising solutions for enhancing resilience by enabling decentralized, rapidly deployable, and grid-independent energy supply. This paper presents a comprehensive review of the role of portable and modular photovoltaic-based power systems in improving energy resilience from a power electronics perspective. The review synthesizes recent literature on resilience concepts, system architectures, and converter-based control strategies relevant to emergency energy applications. Particular emphasis is placed on DC-first and hybrid AC/DC architectures, modular converter topologies, battery management systems, and energy management strategies that support reliable and fault-tolerant operation under variable and uncertain conditions. Practical deployment and performance considerations, including scalability, robustness, monitoring, and usability in disaster environments, are also discussed. The findings indicate that well-designed portable and modular solar power systems can significantly reduce recovery time, improve operational continuity, and decrease reliance on centralized grids and fuel-based generators. This review identifies key technical challenges and research opportunities to guide future development of resilient power electronic-based energy systems for disaster response and recovery.
Rotor Angle Analysis on Power Proportion in Generator and Photovoltaic Hybrid Low Voltage System Fredi Prastiyo; Mochammad Facta; Susatyo Handoko
Jurnal Teknik Elektro Vol. 16 No. 1 (2024)
Publisher : LPPM Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jte.v16i1.3074

Abstract

Electrical energy is essential in modern society, and with the growing demand, all available energy resources are being utilized to meet this need. Insufficient planning and calculation in energy provision can affect the stability of electricity generated by power plants, especially in low-voltage microsystems directly connected to loads. This study investigates the behavior of synchronous microgenerators and photovoltaic systems, focusing on the rotor angle of the generator. Changes in the photovoltaic contribution can cause shifts in the generator's rotor angle, necessitating an analysis of these shifts. An experimental method was used to measure and analyze the power distribution by recording current and voltage in a micro synchronous generator and a grid-tie inverter under a 300-watt linear load. The results show that the generator’s rotor angle remains stable and the grid-tie inverter remains synchronized, with an average angle of 40.2° at a photovoltaic contribution of 32.26% and a synchronous microgenerator contribution of 67.74%. However, when the photovoltaic supply exceeds 37.00%, the rotor angle shifts further, leading to a loss of synchronization in the grid-tie inverter. Additionally, irradiance was found to have a linear effect on photovoltaic distribution. The findings of this study contribute to a better understanding of rotor angle behavior and grid synchronization, providing insights for the development of more reliable and efficient renewable energy systems that maintain electrical stability in low-voltage applications.
Co-Authors Abda Abda Abdul Syakur Abdurrahman, Fauzan Haidar Abrianto, Bagus Hari Adam Kusuma Wardana Adhi Warsito Adhitya Sukma Wijaya Aditya Mahendra Aggie Brenda Verdandez Agrial Sunahtul Putra Agung Warsito Agustinus Danu N, Agustinus Danu Airlangga Avryansyah Akbar, Airlangga Avryansyah Aivelia Mualifatul Risca Akhmad Fauzi Alga Bagas Setiawan Alief Makmuri Hartono Alvian Dwi Hendrawan Andi, Heri Andromeda, Trias Andy Frediansyah Anggiawan, Iqba Anggit Suko Pandu, Anggit Suko Anggun Purnomo Anindita Singgih Pambudi, Anindita Singgih Ardian Trilaksono, Ardian Ardiansyah, Regas Aris Triwiyatno Arsadiando, Watra Atmojo, Kusumo Tri Ayu Adinda Putri, Ayu Adinda Bambang Nugrahadi P, Bambang Nugrahadi Bambang Winardi Bhagaskara, Rhama Bimatara, Tofan Biyan Suhardianto, Biyan Buntat, Zolkafle Buntat, Zolkafle Byan Bagas Pradana cahyadi cahyadi Cahyadi, Lukman Wira Corina, Vinda Zahrotul Daniswara Ardy Putra, Daniswara Ardy Dedy Brian Ericson, Dedy Brian Demas Dwiyan Wahyanto, Demas Dwiyan Denis Denis Dionisius Vidi Nugraha Donny A.W. EDI SARWONO Eflita Yohana Eko Aptono Tri Yuwono Eko Setiawan Enda Wista Sinuraya Evi Setiawati Faisal Aji Syafriarso, Faisal Aji Fajar, Muhammad Rizky Fajar, Siddiq Al Fariz, Fiqih Anugerah Fauzan, Mochamad Irfani Fredi Prastiyo G.R. Arab Markadeh Galih Pinaryoga, Galih Gigih Mahartoto P Ginting, Denis Gultom, Berzelius Octa Natanael Guskha, Vitra Yudarma Haidar Ali Fathin Naufal Hendra Fadholi Adi Prabowo, Hendra Fadholi Hendril Satrian Purnama Hermawan Hermawan Hermawan Hermawan Ilmanda Hermawan, Hermawan Heru Pujiyatmoko Hia, Berkat Surya Putra Hikma Sisintito I Ketut Suada I., M. Lutfi Ibnu Salam, Ibnu Idreis Abdualgader Ilham Bayu Pratama Putra Ilham Prima Yudhanto Imam Syafi’i Irpan Logitra Purba Isnaeni Romadhon, Mohamad Iwan Setiawan Iwan Setiawan Jayabadi, Dennis Satria Wahyu Johanes Nugroho Adhi Prakosa Joko Susilo Juli Setiawan, Juli Juningtyastuti Juningtyastuti Karnoto . Karo, Tio Vanny Br Koesputra, Mohammad Fadhil Kusuma, Muhamad Panji Lina Handayani Lutfi Lastiko Wibowo M Anantha B P M. Azamul Faiz Dinul Haq, M. Azamul Faiz Dinul M. Hasbi Hazmi B., M. Hasbi Mahadi Prasetyawan Marco Arief Juarsah, Marco Arief Maria Oktavia Fitriyani, Maria Oktavia Masaji, Masaji Mashduuqi, Ali Milzam Andali Lababan, Milzam Andali Moh. Izzul Azmi Mohamad Irfan Anshari, Mohamad Irfan Mohamad Isnaeni Romadhon Muhamad Hami Pradipta Muhammad Arief Nugroho Muhammad Fauzan Suryawijaya Muhammad Iklil, Muhammad Muhammad Yudi Nugroho, Muhammad Yudi Muhammad Zainuri Munawar Agus R Munawar Agus Riyadi Muttaqin, Syaoqi Ngurah Ayu Ketut Umiati Ngurah Ayu Ketut Umiati Ni’am, Muhammad Aulan Nugraha Luis Heriawan, Nugraha Luis Nugroho, Bayu Seno Adi Nuryono Satya Widodo Pambudidoyo, Hilman Pamungkas, Deny Fajar Pandita Margayu, Pandita Parmonangan, Samuel Pirdion Pradana, Byan Bagas Pradipta, Adya Pramudya Nur Perdana Prasdiatmaja, Riswandha Prasetya, Agysta Rama Prastiyonoaji, Arifna Dwi Priambodo, Andhika Rizki Prihananto, Pratama Ludfia Dendi Purba, Mesrika Purnama, Hendril Satrian Purnama, Hendril Satrian Putra, Azan Rahmadian Rahmana, Arsyad Sila Ramadhani, Ahmad Zaki Ranisa Ranisa, Ranisa Razali Ngah Reza Heryanto S, Reza Heryanto Ridlwan Zein W N Rismanto Arif Nugroho Ritonga, Seno Yudho Panggayuh Riza Arif Pratama Rizal Fajar Abdurrahman Rizki Nurilyas Ahmad Rizky Adi Nugraha Rizky Patra Jay, Rizky Patra Romadhon, Mohamad Isnaeni S., Sefanda Dwi Safarul Azmi Sakti Pancar Emak Salam, Zainal Salam, Zainal Sandra Aditya Kurniawan Satrio Wibowo Setiyo Nugroho Sidiq Budi Perkasa Siwi, Yordan Raka Slamet . Sudantoko, Eri Sudjadi Sudjadi ., Sudjadi Sudjadi Sudjadi Sulistomo, Pinandito Suryo Sardi Atmojo, Suryo Sardi Susatyo Handoko Susatyo Handoko Suslamet Suslamet Suyanti, Tri Yuli Syauqie Candra Buana, Syauqie Candra Tamin, Achmad Faizal Tan, Chee Wei Taruna Miftah Isnain, Taruna Miftah Tatas Ardhy Prihanto, Tatas Ardhy Taufik Ardian Ramadhana, Taufik Ardian Taufik Chemistryadha Wijaya Tawakal, Panji Tedjo Sukmadi Teguh Prakoso Tejo Sukmadi Tharek A. Rahman Tole Sutikno Tri Hutomo Tri Wahono Tri Wahono Trias Andromeda Turinno, Sarwo Wahono, Tri Wahyu Arief Nugroho Wahyu Prasetya, Wahyu Wahyu Sapto Aji Wibisono, Ariangga Bagas Widiyanto, Romualdy Windarta, Jaka Yoga Fajar Setiaji Yuningtyastuti Yuningtyastuti Yusuf Dewantoro Herlambang Z., Ajub Ajulian Zainal Salam Zainal Salam Zainal Salam Zainal, Ahmad Rizky Zardi, Arief Rahman Zolkafle Buntat Zolkafle Buntat Zolkafle Buntat