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Automatic Capacitor Bank Planning Design using Microcontroller for Power Factor Optimization Ibrohim, Ibrohim; Haryudo, Subuh Isnur; Endryansyah, Endryansyah; Zen, Hafidz Nindhom
Jurnal Listrik, Instrumentasi, dan Elektronika Terapan Vol 7, No 1 (2026)
Publisher : Departemen Teknik Elektro dan Informatika Sekolah Vokasi UGM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/juliet.v7i1.110984

Abstract

Low power factor (cos φ) remains a prevalent issue in residential electrical installations, primarily due to inductive appliances such as air conditioners, refrigerators, and water pumps, which increase reactive power and reduce overall system efficiency. This condition leads to voltage drops, increased current flow, and higher I²R losses, affecting electricity expenditure and long-term equipment reliability. To address this problem, this study proposes an automatic power factor correction system based on reactive power compensation, where capacitors function as local suppliers of reactive power to stabilize voltage and reduce grid loading. The system utilizes an Arduino Nano microcontroller integrated with a PZEM-004T sensor for real-time monitoring of voltage, current, and power factor. Based on the measured parameters, capacitor switching is performed using relay-based control to enable adaptive compensation according to load variations. Experimental testing was conducted under real household operating conditions for a total duration of four months, including pre- and post-intervention measurements. The results showed a substantial improvement in power factor, increasing from 0.79–0.82 to 0.91–0.99 after capacitor bank installation. Current consumption also decreased—for example, from 4.23 A to 3.50 A in Week 1 and from 9.61 A to 8.10 A in Week 5, indicating reduced power losses and improved voltage stability. Furthermore, energy usage declined from 737 kWh to 605 kWh over two months, resulting in an energy saving of 17.9%. In conclusion, the proposed system demonstrates that low-cost automated power factor correction can effectively enhance residential energy efficiency and offer measurable economic benefits for household consumers.
Co-Authors A. Abas A. D. Corebima A. Duran Corebima Abdul Ghofur Abdul Ghofur Abdul Gofur Abdul Gofur Abdul Gofur Abdul Razak, Sarah Adisti Ratnapuri Afiat M, Dyah Afis Baghiz Syafruddin Agung Prijo Budijono Agus Muliadi Ahmad Kamal Sudrajat Akhiruddin Akhiruddin Ali Djamhuri Ali Mustofa Aloysius Duran Corebima Aloysius Duran Corebima Aloysius Duran Corebima ALOYSIUS DURAN COREBIMA Aloysius Duran Corebima Alwan Mahsul Amania Amin Ambarita, Dinar Anandayu Dwi Arini Anandita Eka Setiadi Andi Basuki Andriani, Nining Arfian Suryasuciramdhan Ari Gunawan Arif Hidayat Arika Masruroh Arman Abu Bakar Arrashid, Rakhmad Arrashid, Rakhmad Agus Asto, I Gusti Putu Astutik Astutik Aulia Rahmi, Beta Sari Auliana, Sigit Ayom Sribekti Balqis Balqis Basri, Herlina Betty Lukiati Bowo Sugiharto BOWO SUGIHARTO Cahyanti, Indra Casnika, Casnika Cecep Abdul Hakim Chandra Adi Prabowo Chokchai Yuenyong Chokchai Yuenyong Chotimah, Husnul Dahlia - Dahlia Dahlia Dahlia Dahlia Damopolii, Insar Danang Sulistyo Dedy Hariyadi Dian Dian Dian Ratri Wulandari Didimus Tanah Boleng Diki Muhamad Chaidir Dini Annisha Dita Purwinda Anggrella Dwi Anggorowati Rahayu Dwi Anggorowati Rahayu Dwi Listyorini Dwida Maghfiroh Dwida Maghfiroh Dyah Afiat Mardikaningtyas Eka Kurniati Elistika Oktaviyani Elvani, Astri Endah Sulistyowati Endang Rahmi Nur Laili Endang Suarsini Endryansyah . . Eni Susanti Ervina Mega Silvia Estiningsih, Yuli Facthur Rochman Fadhlan Muchlas Abrori Fadhli Almu’iini Ahda Fardhani, Indra Farid Baskoro Faridah, Listia Adhayul Fatchur Fatchur Rochman Fatchur Rohman Fatchur Rohman Finga Fitri Amanda Finga Fitri Amanda Finga Fitri Amanda Finga Fitri Amanda* Firdaus, Laras Fitriani, Rita Francisco, Rendi Francisco, Rendi FUADAH, KHOLISHOTUL Gautam Kumar Jha Gibtiyyah, Riska Mariyatul Hadi Suwono Hajar, Maya Umi Hamdani . Hamdani Hamdani Hanif Hanif Harisatyma, Nur Khofifa Ayu HASAN SUBEKTI Hawa Tuarita Hayuana, Wachidah Hendra Susanto Herawati Susilo Herry Susanto Herry Susanto HESTARI, SELVIRA Hidayah, Hikmah Hidayat Pujisiswanto Hidayat Pujisiswanto Hidayati Maghfiroh Hikamah, Siti Roudlotul Hunaepi Hunaepi Husamah Husamah I Wayan Sumberartha I. Istiqomah Ifa Muhimmatin Iis Nurasiah Ika Nurani Dewi Indrias Ma’rufinia Ine Aprianti Ismanudin, Ismanudin Iswahyuni Wati Iwan Iwan Iwan, Iwan JAMAL, FIKRI JEFRI, ULFI Jodion Siburian Khaerul Wahidin Kharisma, Yudhi Khusnah, Laila Khusnul Khotimah Komarudin, Mochamad Fahru Kundariati, Maisuna Laila Badriyatul Habibah Laras Firdaus Laras Firdaus Laras Firdaus Laras Firdaus Laras Firdaus Lia Yuliati Lubis, R. E. M. Danil MADE PRAMONO Maisuna Kundariati Maisuna Kundariati Makbul Muksar Marhamah Marhamah Marlina*, Reni Marten Masoka Martiana, Cinthiana Masiah Masiah Masiah Masiah Masiah Masiah Masiah, Masiah Maulidin Alwi Meiby Zulfikar Mimien Henie Irawati Mimien Henie Irawaty Moh. Hafid, Moh. Mohamad Amin Mohammad Taufiq Mohammad Taufiq Mona Selvia Sibuea Muh. Syahriridani MUHAMMAD ALI Muhammad Amin Muhammad Khalil, Muhammad Muhammad Roihan Amir Muhammad Saefi Mulya Nugraha, Agung Muntholib Murni Sapta Sari Mursyidah Mursyidah Murti, Warda Muslihasari, Adzimatnur Mustikasari, Vita Ria N, Fikhi M. N. Nurmi N. Nurwidodo Naafi Aisya Nasrudin, Achmad Natalia Rosa Keliat Nia Kurniawan Niar Nurmauli Niar Nurmauli, Niar Niwangtika, Widyarnes Niwangtika, Widyarnes Novida Pratiwi Nur Laili, Lutfi Eka Nur Suhaiba Sinusi Nurastuti, Galuh Yuli Nurdiana, Fatatus R. Nurwidodo Nurwidodo P. Prasetiyo Permata, Nuniek Prabanintyas, Sitoresmi Purwanti, Wiedia Carullina Putri, Amalia Shaleha Qohar, Abd. Rabiatul Adawiyah Rahmania Pamungkas, Rahmania Ratna Putri Kusuma Wardhani Rayh Sitta Nurmala Retnita Ernayani Lubis Retno, Heni Resmita Rezeqi, Salwa Rezki Fitria Hartini Ria Novita Ayu Komalasari Rifka Fachrunnisa Rika Kartika Rina Wahyuningsih Riski Fitriyani Riza Farahdika Filmi Rohman, Facthur Rukhmana, Trisna S. Mahanal S. Saparuddin Sa'diyah, Wasiatus Saepudin Saepudin Safwatun Nida Samsun Hadi Sarah Abdul Razak Sasea, Louis Ivana Septiana Wulandari Shocheb, Achmad Shoimatun Febriyani Silfia Ilma Sinusi, Nur Suhaiba Siti Maisaroh SITI MARYAM Sitoresmi Prabaningtyas Sofia Ery Rahayu Solly Aryza Sri Endah Indrawati Sri Endah Indriwati Sri Nopita Primawati Sri Rahayu SRI RAHAYU Sri Rahayu Lestari Subekt, Hasan Subuh Isnur Haryudo Sueb Suhadi Suhadi Sujatmiati, Eka Sulisetijono Sulisetijono Supriyono Koes Handayanto Surachman , Surachman Surachman Surachman Suria Putra, Dias Suminta Susriyati Mahanal Sutiman B. Sumitro Sutiman Bambang Sumitro Sutopo Sutopo Suwistika, Rima Syafruddin Syafruddin Syahriridani, Muh. Syajaroh, Imroatul Murodatusy Tama, Fikria Nurhady Tarwiyani Tarwiyani Tarwiyani Tarwiyani, Tarwiyani Teguh Setiawan Imam Santoso Tri Maniarta Sari Tubagus Ahmad Darojat Umi Faridah Umi Nurjanah Unit Three Kartini Utami Sri Hastuti Utaria Mutasam Varicha Ulva Vica Dian Aprelia Resti Vilda Rima Aulia Zahroh VITA FIBRIYANI, VITA Vivi Aida Fitria Wachidah Hayuana Wachidatul Linda Yuhanna Wahyu Dwi Kurniawan Wasiatus Sa’diyah Wati, Iswahyuni Widi Aribowo Widyarnes Niwangtika Wiedia Carullina Purwanti Wiedia Carullina Purwanti Winda Anista Witia Ardipeni Wulandari, Dian Ratri Yakobus Bustami Yeni Hariningsih Yuenyong, Chokchai Yulianti, Erni Yunita Trietika Sakti Zebua, Nofamataro Zen, Hafidz Nindhom Zia Aulia Zaidin Putra Zia Aulia Zaidin Putra