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Pemodelan Resetting Reverse Power Relay Untuk Proteksi Generator Rozi, Fahrul; Zakri, Azriyenni Azhari
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 1 Januari s/d Juni 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

A generator is the main component in a power generation system. The generator needs a protection system to avoid internal or external faults. The protection relay on a 20 MW capacity generator in PLTG PT Riau Power was used in this case study. Furthermore, a Reverse Power Relay (RPR) model was designed and simulated using software Matlab/Simulink. In this simulation, setting the RPR results in several outputs, such as active power, voltage, current, and the delay time of the relay. The simulation results show that the reverse power obtained is -612 kW or 3% and the time delay of the relay is 0,2 second. Meanwhile, the standard of the maximum reverse power is -12.66 MW or 50% and the time delay is 30 second. Thus, there are some differences, i.e., the setting is 6% for the reverse power and 0,6% for the time delay. However, these differences show that setting the RPR still meet standard IEEE C37.102-2006. In this study, re-setting the RPR is proposed by speeding up the time delay between 50% and 95%.Keywords : generator, protection, reverse power relay, delay time
DESAIN DAN ANALISIS KUALITAS PENCAHAYAAN BERBASIS PERANGKAT LUNAK DIALUX EVO 8.1 Febriyursandi, Riski; Zakri, Azriyenni Azhari; Hamzah, Amir
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

This research develops and implements a method for calculating lighting systems for classrooms at Khairul Ummah Islamic Boarding School. The lumen method is one of the methods used to determine the number of luminaires needed to improve lighting quality according to the SNI 6197: 2011 standard. The number of luminaires obtained in this study was included in the simulation for DIALux evo 8.1 software. The results obtained from this study show that the lighting in the classrooms at MTs and MA Khairul Ummah Islamic Boarding School has not reached the recommended standard for classrooms, where the direct measurement results of the average lighting level of class IX-E is 10.79 lux, while in the class X IPA 3 is 11.66 lux. To improve this condition, class IX-E requires the number of luminaires of 15 points and class X IPA 3 requires a luminaire of 12 points. The difference in results obtained from mathematical calculations using the lumen method and the simulation results of DIALux software for class IX-E is 15.6% and in class X IPA 3 is 3.4%. The value of investment costs is necessary in order to make improvements to the lighting system in these two schools which are worth Rp. 2,700,000.00 to provide 27 Philips LED bulb 27 watt lamps.Keywords: Classroom, DIALux evo 8.1, Investmen Cost, Lighting, Lumen Method
SAG AND TENSION OF 275 KV TRANSMISSION LINE USING CATENARY Novriandi, Dicky; Zakri, Azriyenni Azhari; Ervianto, Edy
International Journal of Electrical, Energy and Power System Engineering Vol. 2 No. 3 (2019): International Journal of Electrical, Energy and Power System Engineering (IJEEP
Publisher : Electrical Engineering Department, Faculty of Engineering, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (387.466 KB) | DOI: 10.31258/ijeepse.2.3.15-20

Abstract

This research will develop a catenary method to determine the sag and tension analysis on the 275 kV transmission line conductors. The catenary method is dependent on the equation of the weight of the conductor, the maximum tensile stress of the conducting wire, the length of the span, and the maximum sag of the conductor. The method will be used in determining the value of sag and tension with the design of the model using software AutoCAD. The results of research for the same tower sag height of 6.86 m, with a tension of 4610.83 kg and a conductor length of 401.06 m, while sag for the tower is not the same height of 8.14 m, with a tension of 4612.84 kg, and changes in conductor length 401.06 m. The increase in current causes the sag value to increase, when the minimum current sag value is 6.9828 m, and the maximum current sag value increases to 8.44 m. While the tension will decrease along so that temperature is increased the current minimum pressure of 4531.27kg, and at the time of maximum tension of 3749.728kg. Sag and tension are also affected by ambient temperature when the minimum temperature is 20 ? sags are 6.8621 m and when the maximum temperature is 40 ? sag increases to 7.793492 m. Tension will decrease with each increase in temperature when the minimum temperature is 20 ? tension 4610.538 kg when the maximum temperature is 40 ? the tension is reduced to 4062.345 kg.
PHOTOVOLTAIC MODELING METHODS BASED ON MATLAB SIMULINK IMPLEMENTATION Zakri, Azriyenni Azhari; Nurhalim, Nurhalim; Simanulang, Dohardo P.H.; Tribowo, Ihwallibi
SINERGI Vol 22, No 1 (2018)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (314.331 KB) | DOI: 10.22441/sinergi.2018.1.001

Abstract

This paper presents photovoltaic system as a stand-alone electric power plant in the renewable energy development.  To maximize these stand-alone generators, it is necessary to design photovoltaic modeling to produce energy and maximum power.  The problems that exist in the design of PV systems are PV configuration, battery size, and the maximum power system. Therefore, this research will be proposed modeling Matlab/Simulink based PV system. The contribution of this research can provide various characteristics of the photovoltaic system with a capacity of 100 Wp.  This modeling is designed using Matlab/Simulink software.  The data generated from this simulation will provide a good reference for designing the stand-alone generators in the future.
PHOTOVOLTAIC MODELING METHODS BASED ON MATLAB SIMULINK IMPLEMENTATION Zakri, Azriyenni Azhari; Nurhalim, Nurhalim; Simanulang, Dohardo P.H.; Tribowo, Ihwallibi
SINERGI Vol 22, No 1 (2018)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2018.1.001

Abstract

This paper presents photovoltaic system as a stand-alone electric power plant in the renewable energy development.  To maximize these stand-alone generators, it is necessary to design photovoltaic modeling to produce energy and maximum power.  The problems that exist in the design of PV systems are PV configuration, battery size, and the maximum power system. Therefore, this research will be proposed modeling Matlab/Simulink based PV system. The contribution of this research can provide various characteristics of the photovoltaic system with a capacity of 100 Wp.  This modeling is designed using Matlab/Simulink software.  The data generated from this simulation will provide a good reference for designing the stand-alone generators in the future.
Pemodelan Relay Diferensial Pada Transformator Daya 25 MVA Menggunakan Anfis Firdaus, Hari; Zakri, Azriyenni Azhari
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 1 Januari s/d Juni 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Power transformer is an electrical device that is utilized to convert the electrical power from different voltage level. The fault occurs in the power transformer will inhibit the process of distributing electrical power to the consumer. Therefore, the protection system on power transformers is essential in power systems reliability. Power system can be reliable, if the protective devices work well when there is fault. Under fault conditions, protective devices have an important role in detecting any fault and separating the faulted parts of the system. This research will be conducted on 25 MVA of power transformer at gas power plant (case study: PT Riau Power). Matlab / Simulink was use for modelling differential relay. The simulation of short circuit have been created at three different locations, namely : internal, external 1, and external 2, respectively. The result of short circuit simulation using differential relay to input data used for the application of ANFIS method. Furthermore, these data were classified into three different input for ANFIS such as : internal with eksternal 1, internal with external 2, and internal, external 1 with external 2, respectively. The error result of ANFIS training for type of internal and external fault 1 is 0,00000086148, for types of internal and external fault 2 by 0,00000092462 and internal, external 1 and external 2 of 0,0000019162. The training results have obtained the smallest error value is the type fault of internal and external 1.Keywords : ANFIS, differential relay, power transformer, resetting
Pemodelan Fotovoltaik Berbasis Teknik Adaptive Neuro Fuzzy Inference System Tribowo, Ihwallibi; Zakri, Azriyenni Azhari
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 1 Januari s/d Juni 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Photovoltaic system is designed to meet the need of electricity or as an alternative energy. Using of photovoltaic panel system to generate electrical power has uncertainty of output power value, since it is not constant and strongly influenced by weather condition. This research discusses photovoltaic model to predict efficient and accurate output. This modelling system will applies method of Adaptive Neuro Fuzzy Inference System (ANFIS) to generate power, voltage, current, and temperature prediction. This model is divided into two systems run by ANFIS, ANFIS system 1 and system 2. From simulation result, obtained error value of open circuit voltage from battery 0.000104 %. This value is output value of ANFIS system 1. Furthermore, simulation of ANFIS system 2 produces error value of AC voltage around 0,058482%, This value is the output of inverter.Keyword : ANFIS, battery, modeling, prediction, photovoltaic
Klasifikasi Dan Estimasi Lokasi Gangguan Pada Saluran Transmisi Tenaga Listrik 150 Kv Menggunakan Metode Hibrid Ahmad, Sandy; Zakri, Azriyenni Azhari
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

This research proposes a hybrid method for classifying and estimating the location of short circuit faults in the electrical power transmission line. The hybrid method used Discrete Wavelet Transform (DWT) and Adaptive Neuro Fuzzy Inference System (ANFIS). The transmission system of bus Koto Panjang (KP) to bus Garuda Sakti (GS) in Riau province with a length of 64km were used in this research. DWT was utilized to process information from each phase voltage and current transient signals as well as the zero sequence current for one cycle after the fault begins. The ANFIS classification was designed to detect any fault in each phase and ground in determining the type of short circuit fault. ANFIS estimation was used to measure the fault location that occurs in the transmission line. The training and testing data were generated by simulating type of short circuit fault in Matlab/Simulink with variations in the fault location and fault resistance. The results obtained are classification of fault with an accuracy of 100% and the estimation of fault location with the lowest error is 0.000605% and the highest error is 0.029827%. Keywords: ANFIS, DWT, fault classification, fault estimation, short circuit.
Perancangan Otomasisasi Pengisian Baterai Dengan Surber Energi Surya Syahadad, Hanggun; Zakri, Azriyenni Azhari
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

A charger controller is required in the process of charging batteries that use solar energy through solar panels. The battery charging process can use more than one battery, in this study using two batteries. For this reason, it is necessary to design a battery charging automation device with a solar energy source to facilitate the battery charging process. The charging method is run alternately on two batteries that will be charged based on the preset low voltage sensor. The initial voltage value on the battery is used to calculate the battery's State of Charge (SOC) capacity. In this study, we will observe the filling process of two batteries of 12 Volt Lead Acid types, having a battery capacity of 3.5 Ah and 7.2 Ah with a source of 100 Wp solar panels. An Arduino microcontrollers is invoked as control systems for reading voltage and current sensors as detectors during battery charging. The test results obtained that the first battery is filled with 12.3 Volt for battery voltage at 69.4% SOC reading, then 12.82 Volt second battery with 84.9% SOC reader. The duration of the first battery charging is for 90 minutes with an average current value of 0.7 Ampere at 100% battery of SOC. The second battery starts charging after the battery is full when the relay has moved automatically to charge the second battery. The duration of second battery is charging for 60 minutes with an average current of 0.17 Ampere at 94% SOC. All measurement results, during the test are run directly recorded by the data logger and stored on the SD Card.Keywords: Arduino, Control Charge, Data Logger, Current Sensor, Voltage Sensor
PENERAPAN ANFIS UNTUK PERAMALAN GANGGUAN PADA TRANSFORMATOR DAYA Zakri, Azriyenni Azhari; Firdaus, Hari
Prosiding Seminar Nasional Pakar Prosiding Seminar Nasional Pakar 2019 Buku I
Publisher : Prosiding Seminar Nasional Pakar

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Abstract

Sistem daya listrik memiliki pembangkitan, sistem transmisi, sistem distribusi, sistem proteksi, dan beban. Sistem pembangkitan tenaga listrik merupakan elemen yang digunakan sebagai objek simulasi ketika terjadi gangguan pada transformator daya. Teknik cerdas yang akan digunakan adalah teknik hibrid yaitu gabungan Jaringan Syaraf Tiruan (JST) dan logika Fuzzy yang dikenal dengan ANFIS. Tujuan tulisan ini adalah mengusulkan suatu model gangguan menggunakan relai diferensial pada transformator daya untuk sistem perlindungan via Matlab/Simulink. Simulasi ini akan dianalisis performa relai diferensial untuk transformator daya yang dijalankan terhadap gangguan internal dan eksternal. Teknik ANFIS ini dapat berkontribusi dalam proses deteksi gangguan dengan cara aman dan andal. Pelatihan ANFIS diharapkan akan dapat memecahkan permasalahan identifikasi gangguan pada transformator daya berkapasitas 25 MVA.  Hasil yang diperoleh dari simulasi ini adalah dapat memberi rekomendasi  yang akurat dan efisien dari teknik yang telah dikembangkan menggunakan teknik ANFIS. Hasil keluaran yang diharapkan memberikan koreksi galat yang kecil dan mendekati nilai yang baik. Dan akhirnya, dengan penerapan teknik ANFIS ini dapat memberikan peramalan pada sistem transformator daya untuk meminimalisir gangguan pada transformator daya.