Welcome Messagedoi: 10.1088/1757-899X/602/1/011001pmid: N/A
We are very pleased to welcome all of the participants to The 1st Conference on Innovation in Technology and Engineering Science (CITES) held on November 8th-10th, 2018 in Padang, West Sumatera, Indonesia. This meeting is organized by the Faculty of Engineering Universitas Andalas and supported by Universitas Andalas. We believe that this event will never come to happen without your participation and contribution.This meeting is to bring indonesian scientists, engineers, technical experts, and early-career scientists as well as theirs peers from all around the world to discuss current development and important issues on innovation of technology and engineering science. It is also designed as virtue to exchange knowledges and build strong networks among Indonesian researchers and their International peers.There are more than 120 scientific talks comprise of 6 plenary lectures. In addition to Indonesian communities, this meeting also attracts International scientists from 3 other countries, which are Malaysia, Singapore and Thailand. There is also collaboration research between Indonesian researchers and their partners worldwide. The International diversity and the broad spectrum of the participant origins and research fields play an important role of the success of this meeting.All presented papers that meet the requirements will be submitted to IOP Conference Series: Materials Science and Engineering, Indexed by Scopus Database after several review processes. While selected papers (the best papers) will be submitted to International Journal on Advanced Science, Engineering and Information Technology, Indexed by Scopus Database and Ranked Q2 in Scimago Journal Rank.Finally, we wish to express our sincere appreciation to all of the participants for their valuable contributions and also to the organizer for their excellent works. We also would like to acknowledge sponsors contribution. Hopefully, you will have a fruitful discussion with your colleagues and enjoy a pleasant stay in Padang.Prof. Dr. Eng. GunawarmanConference Chair
Peer review statementdoi: 10.1088/1757-899X/602/1/011002pmid: N/A
All papers published in this volume of IOP Conference Series: Materials Science and Engineering have been peer reviewed through processes administered by the proceedings Editors. Reviews were conducted by expert referees to the professional and scientific standards expected of a proceedings journal published by IOP Publishing.
Design and Implementation of Microstrip Patch Ultra-wide Band Antenna for Detection of UHF Partial DischargeNawawi, Z; Sidik, M A B; Jambak, M I; Ahmad, N; Ahmad, M H; Kumar, C L G P; Waldi, E P; Aulia,
doi: 10.1088/1757-899X/602/1/012001pmid: N/A
Partial discharge (PD) is an electrical release or spark that occurs between two conducting electrodes that are not bridging, and it can occur at any points in the insulation system. PDs emit electromagnetic field radiation in the frequency range of 300 MHz to 1.5 GHz. Thus, it is more appropriate to detect and monitor partial discharge using an ultra-wideband antenna which offers more accuracy than the narrowband antenna. This paper proposes the design and implementation of a microstrip patch antenna which has been designed to possess wider detection performance of ultra-high frequency (UHF) PD signal. The PD spectra of the designed UWB antenna and the commercial whip antenna was compared and analyzed. The result shows that the UWB antenna can effectively detect the UHF PD signals that occur between two electrodes. As results, it is implied that PD measurement by using designed UWB antenna is found to suitable to detect the PD signals for online monitoring of high voltage equipment.
Overcurrent relay coordination with grid-connected and islanding capability on distribution network with distributed generationAdrianti, ; Wahyuni, S; Nasir, M
doi: 10.1088/1757-899X/602/1/012002pmid: N/A
Islanding operation of distributed generation becomes a more appealing operation since large numbers of distributed generation have been installed worldwide. Islanding operation can improve the network reliability as the distributed generation continues providing electrical power for consumers when grid outages occur. However, the protection scheme for the islanding condition is one factor that hinders the realization. The setting of overcurrent relays on distribution network is calculated based on grid-connected condition hence the relay often fails to protect the network during islanding condition. Therefore, this paper proposes a method to establish overcurrent relay settings that coordinate correctly for both islanding and grid connected. The method tries to find a compromise between the setting for grid-connected and grid disconnected condition. The results of a case study show that method has successfully obtained a setting which provides correct coordination of the standard inverse overcurrent relay for both grid-connected an islanding condition.
Design of poka-yoke system based on fuzzy neural network for rotary-machinery monitoringMuharam, M; Latif, M
doi: 10.1088/1757-899X/602/1/012003pmid: N/A
Early detection of machine failure will improve the performance of the production process. The Poka-Yoke device was developed to monitor the machine. The vibration signal is captured by sensors and inputted in Poka-yoke device for processing. Poka-Yoke device has two components, Fuzzy-Neural Network identification and decision maker. The first component, the time-domain signal is transformed into the frequency domain, magnitude and frequency are treated as Fuzzy membership functions by using the statistical parameters as mechanical harmonic distortion and then are trained by Neural Network. The second component, the decision is in the form of machine condition statements such as normal, alarm, and shutdown. Simulation’s results show that the method can be applied to identify the machine condition in term of bearing faults. Moreover, the Poka-yoke system that developed can be used to monitor machine condition automatically.
Performance of impedance measurement algorithm applied in line with a compensation circuitRohadi, N
doi: 10.1088/1757-899X/602/1/012004pmid: N/A
This paper describes a performance of impedance measurement algorithms of SEL-421 distance relay protection when applied to protect series compensated line during fault conditions. The Performance is carried out by varying the value of uncertainty parameters to the accuracy of the impedance measurement algorithm of the relay for the simulated faults, which is measured from the located relay to the fault points. Experiments were carried out with a combination of DIgSILENT PowerFactory software to model and simulate electrical power protection systems with a system voltage of 400 kV and a line length of 300 km with compensation circuit placed in the middle of a protected transmission line. For a fault simulated 0.45 p. U in front of compensation circuit, the relay still works correctly. However, there will be an operation failure of the relay for the fault simulated at 0.8 p. U behind compensation circuit. Faults simulation and performances are performed automatically through the algorithm developed using the DIgSILENT Program Language (DPL). From the enclosed results, the developed method is applicable for testing the performance of the IEDs algorithm.
Parametric sensitivity analysis of SEL-421 distance relay algorithms used in compensated lineRohadi, N
doi: 10.1088/1757-899X/602/1/012005pmid: N/A
This paper presents the use of Global Sensitivity Analysis (GSA) methods to analyze the sensitivity level of the performance of the impedance measurement algorithm of SEL-421 distance relay protection when used to perform transmission line protection with compensation circuit. This GSA technique was developed to see the dominance effect of system uncertainty (or factors). Two techniques that might be used for sensitivity analysis using GSA are Quasi-Monte Carlo (QMC) and data sampling with Sobol technique. Experimental is done with DIgSILENT software to do modeling of the power system, simulation, and calculation of impedance and algorithm error. The testing is carried out automatically with the help of the developed algorithm using DPL (DIgSILENT Programming Language). SIMLAB software, in this case, (with Sobol technique) is applied to generate some non-linear factor data and analyze the output of variations in impedance measurement errors.
The real-time condition monitoring system of gapless arrester based on ZigBee protocol and third harmonic leakage current as indicator parametersNovizon, ; Ulfiah, S A; Malek, Z A; Syafii, ; Riska, N; Aulia, ; Darwison,
doi: 10.1088/1757-899X/602/1/012006pmid: N/A
Monitoring the condition of arrester in service have been presented in the past. Several methods of monitoring the condition of surge arrester were introduced by many researchers. Some and almost all the methods are based on measuring the leakage current. The goal of this study is to design a portable arrester condition monitoring system which is capable of performing arrester health analysis without the need for a voltage source reference — the design based on the previous research which introduces the new method to discriminant the resistive leakage current from total leakage current. The method for diagnosing arrester health is only with the leakage current waveform. The advantage of not needing the voltage reference is that the system can ultimately be used in the field where access a voltage reference about 150 kV is not practical. The design employs a ZigBee wireless protocol as well as a microprocessing based system utilizing an Arduino microcontroller. The ground side current from the arrester is fed through a resistor, which can then be used as a read voltage. The LabVIEW based graphical user interface was prepared to analyze an arrester’s data. The user connects the GUI to the Arduino via ZigBee, samples the waveform from an arrester and then additional data processing is executed. The main part of this processing involves the modified shifted current method on the sampled waveform. Upon conclusion, the user is left with only the resistive component of the arrester leakage current, which is displayed in both the time and frequency domains for analysis.
Power loss estimation of polymeric housing surge arrester using leakage current and temperature approachNovizon, ; Malek, Z A; Ahmad, M H; Waldi, E P; Aulia, ; Laksono, H D; Riska, N
doi: 10.1088/1757-899X/602/1/012008pmid: N/A
The good operation of metal oxide surge arresters depends on the increment of temperature. If the arresters cannot quickly disperse the absorbed energy into the ambient, arresters temperature may exceed its operating temperature limit. Consequently, thermal runaway occurs and results in power loss. In this paper, thermal characteristics and thermal stability based on power loss calculation were investigated. Applied voltages, leakage current, and temperature were the main parameters consideration. The power loss calculated by the electrical model is the input to the thermal model. The electro-thermal model is used to determine the two intersection points (stable operating point and the thermal instability point) of the power input and heat loss curves. The results show that irrespective of the different magnitude voltages applied to the arrester and different energy ratings for the elements, the power loss occurs at the certain applied voltage.