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All Journal Setrum : Sistem Kendali-Tenaga-elektronika-telekomunikasi-komputer JURNAL NASIONAL TEKNIK ELEKTRO Indonesian Journal of Electrical Engineering and Computer Science Andalas Journal of Electrical and Electronic Engineering Technology Jurnal Andalas: Rekayasa dan Penerapan Teknologi Jurnal Rekayasa elektrika
Nasir, Muhammad
Universitas Andalas
Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Other

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A Distribution Line Protection Scheme for Network with Distributed Generation Adrianti, Adrianti; Asharry, Edwindiansyah; Nasir, Muhammad
JURNAL NASIONAL TEKNIK ELEKTRO Vol 10, No 2: July 2021
Publisher : Jurusan Teknik Elektro Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (393.444 KB) | DOI: 10.25077/jnte.v10n2.920.2021

Abstract

Installation of distributed generations (DGs) can cause performance degradation of distribution lines protection. Therefore, the objective of this paper is to propose a protection scheme that can be a solution for this protection line degradation.. The proposed scheme consist of quadrilateral distance relays at upper stream of the lines and directional overcurrent relays at downstream of the lines. The performance of the scheme was tested using Digsilent Powerfactory simulation. The simulation was carried out for four fault types, 0 - 50 Ohms fault resistance and four network conditions/scenarios. The test system consist of three current source i.e. Grid, DG1 and DG2. Variation on-off state of the three current sources is applied in order to check the ability of the scheme to perform correctly for multiple network condition and possibility installation of new DG in the future. The results show that the scheme perform correctly for all bolted fault regardless of fault types, fault location and network scenarios. For three phase and two phase to ground faults the scheme perform correctly for all simulated fault resistance. However, for single line to ground faults and phase to phase faults, the scheme has limitation on maximum fault resistance that can result in correct operation. In general, the proposed scheme able to protect the distribution lines better than the scheme of previous research, but it has a slightly higher chance to perform unwanted operation.Keywords : Distribution line protection, distributed generation, quadrilateral distance relay, directional overcurrent relay
Rekonfigurasi Jaringan Distribusi Listrik Universitas Andalas Untuk Memperbaiki Indeks Energy Not Supplied Asri, Shaumi Novila; Adrianti, Adrianti; Nasir, Muhammad
JURNAL NASIONAL TEKNIK ELEKTRO Vol 8, No 1: March 2019
Publisher : Jurusan Teknik Elektro Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (634.418 KB) | DOI: 10.25077/jnte.v8n1.623.2019

Abstract

This research aims to improve the reliability of electrical distribution networks of Universitas Andalas using network reconfiguration. Reliability calculation is carried out using series-parallel block diagram. The calculated reliability indexes are failure rates, annual down times and energy not supplied (ENS). The reconfiguration is focused for load points that have highest ENS. For these load points, reconfiguration was done by transferred their power supply to nearer distribution substation by installed new feeders. As a result, the distribution network changes it shape into loop configuration, although during operation it still has radial configuration. The reconfiguration has been success in reducing the ENS values of Universitas Andalas distribution network. The highest load point’s ENS i.e. 315,191 kWh/year has been reduced into 142,864 kWh/year. Keywords : Energy not supplied, reliability, reconfiguration, distribution networkAbstrakPenelitian ini bertujuan untuk memperbaiki keandalan jaringan distribusi listrik Universitas Andalas dengan rekonfigurasi jaringan. Perhitungan keandalan dilakukan menggunakan metode blok diagram seri-paralel. Parameter keandalan yang dihitung yaitu laju kegagalan, annual downtimes serta Energy Not Supplied (ENS). Rekonfigurasi dilakukan dengan fokus pada titik-titik beban yang memiliki indeks ENS yang terbesar. Titik-titik beban tersebut direkonfigurasi dengan memindahkan supply dayanya ke gardu yang lebih dekat dengan penambahan saluran baru. Akibatnya bentuk jaringan berubah menjadi konfigurasi loop, tetapi pada saat beroperasi jaringan tetap dalam konfigurasi radial. Dari rekonfigurasi yang diusulkan, nilai ENS sistem distribusi Universitas Andalas berhasil diturunkan dari nilai tertinggi 315,191 kWjam/tahun menjadi 142,864 kWjam/tahun. Sehingga lama dan frekuensi pemadaman listrik di titik-titik beban berhasil dikurangi yang pada akhirnya diharapkan dapat membantu meningkatkan produktivitas di Universitas AndalasKata Kunci : Energy not supplied, keandalan, rekonfigurasi, jaringan distribusi
Rekonfigurasi Jaringan Distribusi Listrik Universitas Andalas Untuk Memperbaiki Indeks Energy Not Supplied Shaumi Novila Asri; Adrianti Adrianti; Muhammad Nasir
JURNAL NASIONAL TEKNIK ELEKTRO Vol 8, No 1: March 2019
Publisher : Jurusan Teknik Elektro Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (634.418 KB) | DOI: 10.25077/jnte.v8n1.623.2019

Abstract

This research aims to improve the reliability of electrical distribution networks of Universitas Andalas using network reconfiguration. Reliability calculation is carried out using series-parallel block diagram. The calculated reliability indexes are failure rates, annual down times and energy not supplied (ENS). The reconfiguration is focused for load points that have highest ENS. For these load points, reconfiguration was done by transferred their power supply to nearer distribution substation by installed new feeders. As a result, the distribution network changes it shape into loop configuration, although during operation it still has radial configuration. The reconfiguration has been success in reducing the ENS values of Universitas Andalas distribution network. The highest load point’s ENS i.e. 315,191 kWh/year has been reduced into 142,864 kWh/year. Keywords : Energy not supplied, reliability, reconfiguration, distribution networkAbstrakPenelitian ini bertujuan untuk memperbaiki keandalan jaringan distribusi listrik Universitas Andalas dengan rekonfigurasi jaringan. Perhitungan keandalan dilakukan menggunakan metode blok diagram seri-paralel. Parameter keandalan yang dihitung yaitu laju kegagalan, annual downtimes serta Energy Not Supplied (ENS). Rekonfigurasi dilakukan dengan fokus pada titik-titik beban yang memiliki indeks ENS yang terbesar. Titik-titik beban tersebut direkonfigurasi dengan memindahkan supply dayanya ke gardu yang lebih dekat dengan penambahan saluran baru. Akibatnya bentuk jaringan berubah menjadi konfigurasi loop, tetapi pada saat beroperasi jaringan tetap dalam konfigurasi radial. Dari rekonfigurasi yang diusulkan, nilai ENS sistem distribusi Universitas Andalas berhasil diturunkan dari nilai tertinggi 315,191 kWjam/tahun menjadi 142,864 kWjam/tahun. Sehingga lama dan frekuensi pemadaman listrik di titik-titik beban berhasil dikurangi yang pada akhirnya diharapkan dapat membantu meningkatkan produktivitas di Universitas AndalasKata Kunci : Energy not supplied, keandalan, rekonfigurasi, jaringan distribusi
A Distribution Line Protection Scheme for Network with Distributed Generation Adrianti Adrianti; Edwindiansyah Asharry; Muhammad Nasir
JURNAL NASIONAL TEKNIK ELEKTRO Vol 10, No 2: July 2021
Publisher : Jurusan Teknik Elektro Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (393.444 KB) | DOI: 10.25077/jnte.v10n2.920.2021

Abstract

Installation of distributed generations (DGs) can cause performance degradation of distribution lines protection. Therefore, the objective of this paper is to propose a protection scheme that can be a solution for this protection line degradation.. The proposed scheme consist of quadrilateral distance relays at upper stream of the lines and directional overcurrent relays at downstream of the lines. The performance of the scheme was tested using Digsilent Powerfactory simulation. The simulation was carried out for four fault types, 0 - 50 Ohms fault resistance and four network conditions/scenarios. The test system consist of three current source i.e. Grid, DG1 and DG2. Variation on-off state of the three current sources is applied in order to check the ability of the scheme to perform correctly for multiple network condition and possibility installation of new DG in the future. The results show that the scheme perform correctly for all bolted fault regardless of fault types, fault location and network scenarios. For three phase and two phase to ground faults the scheme perform correctly for all simulated fault resistance. However, for single line to ground faults and phase to phase faults, the scheme has limitation on maximum fault resistance that can result in correct operation. In general, the proposed scheme able to protect the distribution lines better than the scheme of previous research, but it has a slightly higher chance to perform unwanted operation.Keywords : Distribution line protection, distributed generation, quadrilateral distance relay, directional overcurrent relay
The Effect of Wind Power Generation on Distance Relay Performance Adrianti Adrianti; Syndy Maiyunis Firdaus; Muhammad Nasir
Andalas Journal of Electrical and Electronic Engineering Technology Vol. 2 No. 1 (2022): May 2022
Publisher : Electrical Engineering Dept, Engineering Faculty, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (330.674 KB) | DOI: 10.25077/ajeeet.v2i1.17

Abstract

Wind Power Plants utilize induction generators to generate electrical power. This type of generator produces less short circuit current than synchronous generators; hence it may affect the operation of transmission line protection relays. This research aims to analyze the effect of a large-scale wind power plant connected to the transmission line on the performance of the distance relays. The study utilizes a simulation method using Digsilent Powerfactory on IEEE 5 bus test system. The performance of the distance relays is compared between the original system, and the system in one of its generators is replaced with a wind turbine generator. The simulations are carried out for 3-phase faults that consist of bolted short circuits, 1-ohm fault resistance and 10-ohm fault resistances. The results show that the relays performances in zone 1 are the same for all types of generations. For zones 2 and 3, depending on the relay's position, the reaches may increase or decrease when the generator is replaced by wind power. The increasing reach of the relays is due to the dropping of infeed effect felt by the relay after installation of wind power. While the decreasing reaches of some relays because they see less fault current from the wind generation. The other relays do not experience any changes. Fault resistances cause all relays to experience reduced reach.
Catu Daya Tenaga Surya Sebagai Cadangan Listrik Pondok Pasantren di Teluk Buo, Padang Syafii Syafii; Adrianti Adrianti; Muhammad Nasir; Syukri Yunus
Jurnal Andalas: Rekayasa dan Penerapan Teknologi Vol. 2 No. 1 (2022): Juni 2022
Publisher : Jurusan Teknik Elektro, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (440.499 KB) | DOI: 10.25077/jarpet.v2i1.22

Abstract

Kegiatan pengabdian penyediaan catu daya tenaga surya sebagai cadangan listrik Pondok Tahfidz Teluk Buo telah dilakukan. Catu daya ini dapat dimanfaatkan sebagai alternatif cadangan ketersediaan tenaga listrik saat terputusnya suplai tenaga listrik dari PLN. Catu daya listrik panel surya ini terdiri dari 2 unit panel surya 150 Wp, inverter 850 VA, dan 2 unit baterai @100 Ah. Baterai dapat diisi ulang dengan menggunakan daya listrik dari panel surya pada saat matahari bersinar (pagi sampai sore hari) untuk selanjutnya dapat digunakan pada saat terputusnya suplai tenaga listrik dari PLN. Catu daya tenaga surya memiiki keunggulan dibandingkan genset diesel krena tidak bising dan tidak membutuhkan bahan bakar minyak. Semoga ke depan proses pendidikan tahfidz qur’an dapat berjalan dengan baik meskipun listrik PLN padam. Kemajuan Pondok Tahfidz menjadi kemajuan warga di Teluk Buo.
Pemeliharaan dan Perbaikan Instalasi Listrik Pondok Tahfidz Darul Hijrah Wal Amanah Muhammad Nasir; Adrianti Adrianti; Syafii Syafii; Syukri Yunus
Jurnal Andalas: Rekayasa dan Penerapan Teknologi Vol. 2 No. 2 (2022): Desember 2022
Publisher : Jurusan Teknik Elektro, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jarpet.v2i2.35

Abstract

Ketersediaan catu daya cadangan saat terjadi pemadaman listrik PLN sangat dibutuhkan di Pondok Tahfidz Darul Hijrah Wal Amanah, Teluk Buo, Padang. Catu daya cadangan bertenaga surya yang sudah dimiliki perlu dilakukan pemeliharaan agar awet dan berfungsi maksimal. Demikian juga dengan instalasi listrik pada area pondok yang masih memiliki banyak kekurangan. Departemen Teknik Elektro Universitas Andalas telah melakukan kegiatan Pengabdian Masyarakat di Pondok Tahfidz tersebut dengan tujuan melakukan pemeliharan catu daya cadangan dan perbaikan pada instalasi listrik di area Pondok. Kegiatan pengabdian dimulai dengan perencanaan, survei dan pengecekan, perbaikan dan diakhiri dengan kegiatan pembimbingan/training pemeliharaan kepada pengelola Pondok. Hasil kegiatan pengabdian adalah catu daya cadangan dapat berfungsi dengan baik kembali dan instalasi listrik telah ditambahkan sehingga pemakaian listrik dapat lebih mudah dan juga efisien.
Voltage Stability Analysis of Power System with Photovoltaic Power Plant Adrianti Adrianti; Rada Tamara Putri; Muhammad Nasir
JURNAL NASIONAL TEKNIK ELEKTRO Vol 12, No 1: March 2023
Publisher : Jurusan Teknik Elektro Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jnte.v12n1.1055.2023

Abstract

Photovoltaic power plants usually do not provide reactive power output; hence the application of large photovoltaics in power systems will decrease the voltage stability level of the power system. Capacitor banks can provide reactive power to compensate the photovoltaic plants; therefore, capacitor banks can overcome the reactive power deficiency of photovoltaic plants. However, the effect of capacitor bank installation on the system’s voltage stability is unknown.  Therefore, the research aims to investigate whether installing a capacitors bank can restore the level of system voltage stability. The study employs the method of Voltage Stability Margin and transient stability simulation to the IEEE 9 bus system. The IEEE 9 bus system is modified where one generator of the system is replaced with a photovoltaic plant, and a capacitor bank is also installed. The study results show that the modified system voltage stability level is lower than the original system. When the capacity of the capacitor bank is increased to the maximum allowable value, the voltage stability level rises. However, it is still unable to be restored to its original value.
A 48-MW floating photovoltaic design and integration to a grid Adrianti Adrianti; Thoriq Kurnia Agung; Muhammad Nasir; Pinto Anugrah
Indonesian Journal of Electrical Engineering and Computer Science Vol 30, No 3: June 2023
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v30.i3.pp1331-1338

Abstract

Photovoltaic is one of the renewable power sources with the highest growth in recent decades. However, large photovoltaic capacities require enormous areas for installing the modules, which is frequently troublesome. This issue could be addressed by a floating photovoltaic system since it can be installed on the surface of unutilised lakes, and dams. This study aims to design a 48-MW floating photovoltaic at Lake Singkarak and determine a connected substation to the West Sumatra Grid. PVsystem and digsilent powerfactory were used in this study as the calculation and simulation tools. The study’s results discover that the 48-MW floating photovoltaic design consists of 96,000 photovoltaic modules of 500 Wp and 16 inverters of 3,000 kVA. Simulation results showed that Solok substation is the most optimum choice to connect the floating PV, as it provides better voltage profiles, fewer power losses and a shorter distance. The harmonic simulation also showed the THDv of 2.14% at 150 kV of Solok substation, which is still within acceptable limits.
Studi Pemanfaatan Relai Jarak Quadrilateral untuk Proteksi Saluran Distribusi dengan Pembangkit Tersebar Adrianti Adrianti; Muhammad Nasir; Muhammad Rivaldi
Jurnal Rekayasa Elektrika Vol 16, No 2 (2020)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (940.013 KB) | DOI: 10.17529/jre.v16i2.15734

Abstract

Installation of distributed generations (DGs) in distribution network bring benefits for power system operation. However, DGs change the distribution network topologies from radial with one source into multi-sources network, hence magnitude and direction of the current will also change. Consequently, the existing distribution line protection i.e. current based protection, experience performances deterioration. To overcome this problem, distance relays, which work based on calculated impedance is proposed. However, since mho distance relays fail to detect faults through resistance in previous research, quadrilateral characteristic of distance relay is chosen. Quadrilateral distance relays have separate setting for reach and resistance; hence it is expected it will accommodate fault resistance. Therefore, this research aims to identify the performance of quadrilateral distance relay in protecting distribution lines that having DG. The research method is computer simulation where quadrilateral distance relays performance is tested for various faults and system conditions in a test system. The software for the simulation is Digsilent Power factory. The results conclude that the quadrilateral distance relays experienced failures to detect faults in correct zone operation due to a weak source of DG. DG generates less fault current, as consequences, the relays see large impedances. 
Co-Authors Adrianti, Adrianti Asharry, Edwindiansyah Asri, Shaumi Novila Edwindiansyah Asharry Indora, Muhammad Fachreyza Kamil, Insannul Muhammad Rivaldi Pinto Anugrah Rada Tamara Putri Riko Nofendra Shaumi Novila Asri Syafdini, Riki Syafii . Syndy Maiyunis Firdaus Syukri Yunus Thoriq Kurnia Agung