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Fault Diagnosis for Transmission Lines Systems Using ANFIS Techniques Azhari Zakri, Azriyenni
International Journal of Electrical, Energy and Power System Engineering Vol. 1 No. 1 (2018): International Journal of Electrical, Energy and Power System Engineering (IJEEP
Publisher : Electrical Engineering Department, Faculty of Engineering, Universitas Riau

This paper presents a fault diagnosis for long transmission lines using Adaptive Neuro-Fuzzy Inference System (ANFIS). The electric power transmission system is a link power generation and distribution. If a failure occurs as long the transmission line could be estimation caused of undesired fault power delivery to consumer come not go well. Therefore, it would need to provide an alternative solution to solve this problem. The objectives of this paper are classification and estimate of a fault into the transmission line by using application of ANFIS. The systems have been put forward and tested on simulated data transmission lines into different faults. The results test given to contribute to an alternate technique where it has good performance for fault diagnosis in the transmission lines.

Identifying Characteristic of Power Quality Problems on Solar Electric Power Generation Dani Ali, Nurhalim; Azhari Zakri, Azriyenni
International Journal of Electrical, Energy and Power System Engineering Vol. 1 No. 2 (2018): International Journal of Electrical, Energy and Power System Engineering (IJEEP
Publisher : Electrical Engineering Department, Faculty of Engineering, Universitas Riau

The influence of connected electrical load will cause significant problems on Solar Electric Power Generator (SEPG). The problems are extremely important to be identification in order to provide electrical energy optimally. The objective of this paper is tantamount to investigate the impact of household electrical load on SEPG with variation and continuous electrical load. The identification of power quality was made by marking several test point on each output of SEPG unit. The level quality of voltage and frequency system needed to be measured and observed its performance indicator level. Furthermore, it compared by existing standard. To variation electrical load test, the results showed that the frequency of the system changed from 52 Hz to 262 Hz. In other hands, the frequency rose about five times against normal frequency. The continuous load test, that frequency of system fluctuated around 52 Hz to 156 Hz that also showed abnormal operation of SEPG.

Feasibility Study of Hydro Power Plant (HPP) Lubuak Gadang Sangir South Solok Hidayat; Azhari Zakri, Azriyenni; Satria, Iman
International Journal of Electrical, Energy and Power System Engineering Vol. 4 No. 1 (2021): 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 | DOI: 10.31258/ijeepse.4.1.121-126

The feasibility study is one of the principal documents in building a hydropower plant consisting of technical, economic, and financial aspects. Contained technical studies on civil, mechanical, and electrical. This requires data on hydrologic, geology, land contours, river discharge, water catchment areas, and so on. Economic and financial studies include cost and financial parameters such as; BEP, IRR, NVP, BCR, and others. The installed capacity of a hydropower plant is given in optimization based on the Flow Duration Curve (FDC) and the Capacity Factor (CF) used the Newton Interpolation Method. The results showed that the installed power capacity was 11.99 MW. The water discharge was 31.603 m3/secs and the effective head was 37.5 meters. Annual income is around IDR 103.026 billion. Finally, HPP Lubuak Gadang is technically, economically, and financially feasible, so it is feasible to carry out the next process.

Penetration of DWT & ANFIS to Power Transmission Disturbances Ahmad, Sandy; Azhari Zakri, Azriyenni; Oktaviandri, Muchamad; Sunanda, Wahri; Suryadi, Aris
International Journal of Electrical, Energy and Power System Engineering Vol. 6 No. 1 (2023): The International Journal of Electrical, Energy and Power System Engineering (I
Publisher : Electrical Engineering Department, Faculty of Engineering, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ijeepse.6.1.105-110

This study proposes a hybrid method to classify and estimate the location of short circuit disturbance on power transmission lines. The hybrid method uses Discrete Wavelet Transform (DWT) and Adaptive Neuro-Fuzzy Inference System (ANFIS). The transmission system is implemented in a real system, in which the electric power transmission system on the KP bus to the GS bus is with a length of 64 Km. The DWT is used to process information from each phase voltage and current transient signal as well as the zero-sequence current for one cycle after the disturbance has started. The ANFIS classification is designed to detect disturbance on each phase and ground in determining the type of short circuit disturbance. ANFIS estimation is used to measure the location of disturbance that occur on the transmission line. The training and testing data are generated by simulating the types of short circuit disturbance using software with variations in disturbance location and fault resistance. The result is that the disturbance classification is with 100% accuracy and the estimated disturbance location is with the lowest error of 0.0006% and the highest error is 0.03%.

The Evaluation of Over Current Relay and Ground Fault Relay Settings on Power Transformers Fatwa Ulhuda, Fikri; Azhari Zakri, Azriyenni; Ali, Umair
International Journal of Electrical, Energy and Power System Engineering Vol. 7 No. 2 (2024): The International Journal of Electrical, Energy and Power System Engineering (I
Publisher : Electrical Engineering Department, Faculty of Engineering, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ijeepse.7.2.100-110

Power transformer is an important component of the substation and has an important role in the electric power distribution system. During operation the power transformer can’t be isolated from distribution system when abnormal conditions or faults occur. A fault in the power transformer will have huge impact on the power transformer itself. The substation has an installed capacity of 60 MVA of power transformers, and during operation there is a possibility of relay failure, which may interrupt the power distribution process to the load. To avoid this failure, it is necessary to analyse the settings of Over Current Relay (OCR) and Ground Fault Relay (GFR) on the 60 MVA transformers. The analysis was carried out by simulating short circuit faults of the electrical system in the ETAP software application, and then configure the setting of the relay by referring to the magnitude of the short circuit current value for phase to phase and phase to ground. The results of this analysis are used as a reference to determine the OCR and GFR relay values in the power transformer. The results obtained show that the recommended value for OCR setting on 150 kV power transformers is 0.92 second while for GFR is 0.96 second, and for the 20 KVA power transformers the OCR and GFR setting values are 0.40 and 0.20 seconds respectively. Comparison based on the results of the setup data and the analysis data has carried out, there is difference in the working time of the relay, with a difference of 5%, where the value of the analysis results is not much different from the conditions in the field.

Analysis of Power and Voltage Losses in Electric Submersible Pump Motor Installations Habib, Khusnul Habib Siregar; Azhari zakri, Azriyenni
International Journal of Electrical, Energy and Power System Engineering Vol. 7 No. 1 (2024): The International Journal of Electrical, Energy and Power System Engineering (I
Publisher : Electrical Engineering Department, Faculty of Engineering, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ijeepse.7.1.22-36

In area mining are quite extreme, where the level of safety from high temperatures and toxic gases which are explosive as well as well flow pressure is also high and can damage production equipment. Therefore, it is very necessary to install reliable electrical power, starting from analyzing the selection of cable types that used, voltage drop, power losses and transformer selection. The problems mentioned previously, this research carried out an analysis of improvements to voltage drops and power losses that occurred in the ESP motor installation system. The method used is to replace the type of cable used in three scenarios with three different types of cable. The installation system data obtained from this company was then processed using software which was then validated with theoretical calculation results. The result of voltage drops and power losses in ESP cables according to standards using scenario 3, replacing AWG 2/0 type with a voltage rating of 5 kV, diameter of 11.709 mm and has a KHA of up to 210 A. The voltage drop value after repairs are carried out based on theoretical calculation results has an average percentage index value of 4.5% and power losses of 4.6%. This shows that in the condition after repairs, both the results of simulation calculations and theoretical values have met the IEEE std 141-1993 standard which states that the value of voltage drop and power losses in industrial plan distribution systems must be below 5%.

Assessing the Viability of Converting Fuel-Based Pedicabs to Electric Pedicabs: A Case Study in Padang Hidayat; Azhari Zakri, Azriyenni; Satria, Iman; Duskiardi; Arzul; Ali, Umair
International Journal of Electrical, Energy and Power System Engineering Vol. 8 No. 1 (2025): The International Journal of Electrical, Energy and Power System Engineering (I
Publisher : Electrical Engineering Department, Faculty of Engineering, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ijeepse.8.1.1-14

This study evaluates the feasibility of converting oil-powered three-wheeled pedicabs to electric vehicles to support sustainable urban transportation. The research focuses on pedicabs in Padang, which are commonly adapted from motorcycles. The feasibility assessment includes technical, financial, and demand analysis to determine the viability of the conversion. A survey was conducted among pedicab users to assess operational costs, fuel consumption, maintenance expenses, awareness of green energy, and willingness to transition to electric-powered pedicabs. The technical design involved selecting conversion components, estimating costs, and analyzing post-conversion operational expenses. The proposed electric pedicab utilizes a 2 kW, 72 V BLDC motor, with an estimated conversion cost of IDR 10 million. The operational cost before conversion is IDR 150,000 per week. Financial analysis shows that while initial operating costs for electric pedicabs are higher, they become more economical after 103 weeks. The findings indicate that the conversion is technically and financially feasible, with 53.85% of surveyed pedicab users expressing willingness to switch to electric models. This study highlights the potential to reduce fossil fuel dependence and promote environmentally friendly transportation alternatives in urban areas.

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