Pub Date : 2019-06-18DOI: 10.24843/JEEI.2019.V03.I01.P04
Pebri Yeni Samosir, N. Pramaita, I. G. A. K. D. D. Hartawan, N. Wirastuti
Multiple Input Multiple Output (MIMO) technology is a technique that can be used to overcome multipath fading. The multipath fading is caused by signals coming from several paths that experience different attenuations, delays and phases. In a multipath condition, an impulse that sent by the transmitter, will be received by the recipient not as an impulse but as a pulse with a spread width that called delay spread. Delay spread can cause intersymbol interference (ISI) and bit translation errors from the information received. To determine the effect of delay spread on the MIMO system, then MIMO system performance research was performed on flat fading and frequency selective fading channels using the Space Time Block Code (STBC) coding technique. This research was conducted using MatLab 2018a software. The simulation results show that the MIMO STBC system performance on flat fading channels is better than the MIMO STBC system performance on the frequency selective fading channel. This result is analyzed based on the value of BER vs. Eb/No and eye diagram.
{"title":"Performance Analysis of MIMO STBC System in Flat Fading and Frequency Selective Fading Channels","authors":"Pebri Yeni Samosir, N. Pramaita, I. G. A. K. D. D. Hartawan, N. Wirastuti","doi":"10.24843/JEEI.2019.V03.I01.P04","DOIUrl":"https://doi.org/10.24843/JEEI.2019.V03.I01.P04","url":null,"abstract":"Multiple Input Multiple Output (MIMO) technology is a technique that can be used to overcome multipath fading. The multipath fading is caused by signals coming from several paths that experience different attenuations, delays and phases. In a multipath condition, an impulse that sent by the transmitter, will be received by the recipient not as an impulse but as a pulse with a spread width that called delay spread. Delay spread can cause intersymbol interference (ISI) and bit translation errors from the information received. To determine the effect of delay spread on the MIMO system, then MIMO system performance research was performed on flat fading and frequency selective fading channels using the Space Time Block Code (STBC) coding technique. This research was conducted using MatLab 2018a software. The simulation results show that the MIMO STBC system performance on flat fading channels is better than the MIMO STBC system performance on the frequency selective fading channel. This result is analyzed based on the value of BER vs. Eb/No and eye diagram.","PeriodicalId":52825,"journal":{"name":"Journal of Electrical Electronics and Informatics","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85601274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-18DOI: 10.24843/JEEI.2018.V02.I02.P05
C. Partha, I. N. Budiastra, A. Amrita, I. M. Suartika
Aviation technology and space is one of the leading technology for developed countries, especially in the form of rocket technology and payload. Countries that are capable of mastering these technologies will be respected by countries all over the world. Indonesia as the island nation and the State's large and extensive maritime already should have independence in the mastery of the technology of the rocket and payload. Therefore, continuous efforts are required to achieve independence, including through enhancing aviation technology and space technology, particularly at early stages the rocket and payload. Remote Sensing Systems At the rocket's Payload was Test remote monitoring system image capture and the attitude of the launch payload through the computer screen (display) continuously (real-time) data obtained from sensors that are mounted on the rocket's payload. 3D point (x, y, z) must be expressed as a graph visualization perspective drawings of rockets with the appropriate direction. The radar conducted computer GS (Ground Segment) or Ground Control Station (GCS). The result of the attitude of the Rocket Test launch Payloads have been able to do the communication data transmission of images and data for 3D (x, y, and z) in real-time to the Ground segment. Wireless communication uses radio telemetry frequency 433 MHz, power of 100 mW, the distance range obtained in this study a maximum of 1000 meter in conditions in the air and without obstruction.
航空航天技术是发达国家的领先技术之一，特别是在火箭技术和有效载荷方面。有能力掌握这些技术的国家将受到世界各国的尊重。印度尼西亚作为岛国和幅员辽阔的海洋国家，在掌握火箭技术和有效载荷方面已经应该具有独立性。因此，需要不断努力实现独立，包括通过加强航空技术和空间技术，特别是在火箭和有效载荷的早期阶段。遥感系统在火箭的有效载荷上进行测试，远程监控系统通过计算机屏幕(显示)连续(实时)从安装在火箭有效载荷上的传感器获得的图像捕获和发射有效载荷的姿态。三维点(x, y, z)必须表示为具有适当方向的火箭的图形可视化透视图。雷达指挥计算机GS(地面段)或地面控制站(GCS)。火箭测试发射有效载荷的姿态结果已经能够进行图像和3D (x, y和z)数据的实时通信数据传输到地面段。无线通信采用无线电遥测频率433 MHz，功率100 mW，在空中无障碍物的条件下，本研究获得的距离范围最大可达1000米。
{"title":"Remote Sensing Systems At The Rocket's Payload Test","authors":"C. Partha, I. N. Budiastra, A. Amrita, I. M. Suartika","doi":"10.24843/JEEI.2018.V02.I02.P05","DOIUrl":"https://doi.org/10.24843/JEEI.2018.V02.I02.P05","url":null,"abstract":"Aviation technology and space is one of the leading technology for developed countries, especially in the form of rocket technology and payload. Countries that are capable of mastering these technologies will be respected by countries all over the world. Indonesia as the island nation and the State's large and extensive maritime already should have independence in the mastery of the technology of the rocket and payload. Therefore, continuous efforts are required to achieve independence, including through enhancing aviation technology and space technology, particularly at early stages the rocket and payload. Remote Sensing Systems At the rocket's Payload was Test remote monitoring system image capture and the attitude of the launch payload through the computer screen (display) continuously (real-time) data obtained from sensors that are mounted on the rocket's payload. 3D point (x, y, z) must be expressed as a graph visualization perspective drawings of rockets with the appropriate direction. The radar conducted computer GS (Ground Segment) or Ground Control Station (GCS). The result of the attitude of the Rocket Test launch Payloads have been able to do the communication data transmission of images and data for 3D (x, y, and z) in real-time to the Ground segment. Wireless communication uses radio telemetry frequency 433 MHz, power of 100 mW, the distance range obtained in this study a maximum of 1000 meter in conditions in the air and without obstruction. ","PeriodicalId":52825,"journal":{"name":"Journal of Electrical Electronics and Informatics","volume":"38 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85171446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-18DOI: 10.24843/JEEI.2018.V02.I02.P02
I. M. Suartika, R. S. Hartati, Ida B. G. Manuaba
Increased THD (Total Harmonics Distortion) in the utility, caused by the increasing operation of non-linear loads. High THD current (THDi) will affect the increase of power losses in the power system. In this study, THD analysis of the simulation results was performed according to IEEE 519-2014 standard on existing condition, shunt active filter operating condition and shunt active filter operating conditions with PID (proportional integral derivative) control, also analyzed losses before and after harmonic impact. The result of losses analysis on existing condition: losses phases R 3.38%, phase S 2.29%, phase T 3.33%. Total losses on existing condition 9.01%. Operation with active shunt filter is obtained losses for phase R 1.60%, phase S 2.46%, phase T 1.67%, so the total losses become 5.73%. While using the active filter with PID control for losses phase R 1.02%, phases S 0.89%, phases T 0.99%, so the total losses fell to 2.18%
{"title":"Damping Harmonic Distortion Using Active Filter with PID Control at Udayana University Faculty of Engineering Bukit Jimbaran","authors":"I. M. Suartika, R. S. Hartati, Ida B. G. Manuaba","doi":"10.24843/JEEI.2018.V02.I02.P02","DOIUrl":"https://doi.org/10.24843/JEEI.2018.V02.I02.P02","url":null,"abstract":"Increased THD (Total Harmonics Distortion) in the utility, caused by the increasing operation of non-linear loads. High THD current (THDi) will affect the increase of power losses in the power system. In this study, THD analysis of the simulation results was performed according to IEEE 519-2014 standard on existing condition, shunt active filter operating condition and shunt active filter operating conditions with PID (proportional integral derivative) control, also analyzed losses before and after harmonic impact. The result of losses analysis on existing condition: losses phases R 3.38%, phase S 2.29%, phase T 3.33%. Total losses on existing condition 9.01%. Operation with active shunt filter is obtained losses for phase R 1.60%, phase S 2.46%, phase T 1.67%, so the total losses become 5.73%. While using the active filter with PID control for losses phase R 1.02%, phases S 0.89%, phases T 0.99%, so the total losses fell to 2.18%","PeriodicalId":52825,"journal":{"name":"Journal of Electrical Electronics and Informatics","volume":"69 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88302659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-08-31DOI: 10.24843/jeei.2018.v02.i02.p06
N. Wirastuti, I. M. A. Suyadnya, D. C. Khrisne
This paper study the performance of Orthogonal Frequency Division Multiplexing (OFDM) system over AWGN and Rayleigh fading channels. OFDM performs multi-carrier transmission where all the subcarriers are orthogonal to each other. The channel coding was applied to improve the OFDM system performance. Reed Solomon (RS) codes was chosen that an efficient channel coding algorithm and has intense error correction ability. Adding the benefits of multicarrier OFDM system and Reed Solomon codes to achieve the expected system performance. The coded OFDM system was modeled over and simulated using Matlab. The bit error rate (BER) and energy bit (Eb) per noise power density (No) was performed during system simulations. QPSK modulation was used to modulate the random bits. From the simulation results It can be seen that BER vs. EB/No parameter for Coded OFDM system lower than uncoded OFDM. This was because RS codes succeed to correcting the error generated along data transmission.
研究了正交频分复用(OFDM)系统在AWGN和瑞利衰落信道下的性能。OFDM执行多载波传输，其中所有子载波彼此正交。采用信道编码提高了OFDM系统的性能。RS码是一种有效的信道编码算法，具有很强的纠错能力。加入了多载波OFDM系统和里德索罗门码的优点，以达到预期的系统性能。利用Matlab对编码OFDM系统进行了建模和仿真。在系统仿真过程中计算了误码率(BER)和每噪声功率密度(No)的能量比特(Eb)。采用QPSK调制对随机位进行调制。从仿真结果可以看出，编码OFDM系统的BER vs. EB/No参数低于未编码OFDM系统。这是因为RS码成功地纠正了数据传输过程中产生的错误。
{"title":"Performance Assessment of OFDM System using Reed-Solomon Codes over Fading Channels","authors":"N. Wirastuti, I. M. A. Suyadnya, D. C. Khrisne","doi":"10.24843/jeei.2018.v02.i02.p06","DOIUrl":"https://doi.org/10.24843/jeei.2018.v02.i02.p06","url":null,"abstract":"This paper study the performance of Orthogonal Frequency Division Multiplexing (OFDM) system over AWGN and Rayleigh fading channels. OFDM performs multi-carrier transmission where all the subcarriers are orthogonal to each other. The channel coding was applied to improve the OFDM system performance. Reed Solomon (RS) codes was chosen that an efficient channel coding algorithm and has intense error correction ability. Adding the benefits of multicarrier OFDM system and Reed Solomon codes to achieve the expected system performance. The coded OFDM system was modeled over and simulated using Matlab. The bit error rate (BER) and energy bit (Eb) per noise power density (No) was performed during system simulations. QPSK modulation was used to modulate the random bits. From the simulation results It can be seen that BER vs. EB/No parameter for Coded OFDM system lower than uncoded OFDM. This was because RS codes succeed to correcting the error generated along data transmission.","PeriodicalId":52825,"journal":{"name":"Journal of Electrical Electronics and Informatics","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89814108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-08-31DOI: 10.24843/jeei.2018.v02.i02.p03
I. Pratama, Kadek Ayu Wirdiani
Tourism event data data in Gianyar regency must be managed well, so that it can giving knowledge to all event organizers about tourist interest of all tourism objects around Gianyar Regency. The knowledge also helping them for strategy determination and decision making. Each event organizer can manage their own tourism event data into the system and all of data can be processed to be information and report for the tourist, to make tourism service in Gianyar Regency better. This paper show the design, implementation, and testing of Tourism Event Management System using Gianyar Smart Tourism based on Cloud for all event organizers in Gianyar Regency, developed using Design Science Research Methodology (DSRM) and tested using User Accepted Testing (UAT). It also act as Knowledge Management about tourism event data and tourist demand. Conclusion, all tourism event can be managed well and all event organizers can manage their tourism event data easier.
{"title":"Tourism Event Management System Using Gianyar Smart Tourism Based On Cloud","authors":"I. Pratama, Kadek Ayu Wirdiani","doi":"10.24843/jeei.2018.v02.i02.p03","DOIUrl":"https://doi.org/10.24843/jeei.2018.v02.i02.p03","url":null,"abstract":"Tourism event data data in Gianyar regency must be managed well, so that it can giving knowledge to all event organizers about tourist interest of all tourism objects around Gianyar Regency. The knowledge also helping them for strategy determination and decision making. Each event organizer can manage their own tourism event data into the system and all of data can be processed to be information and report for the tourist, to make tourism service in Gianyar Regency better. This paper show the design, implementation, and testing of Tourism Event Management System using Gianyar Smart Tourism based on Cloud for all event organizers in Gianyar Regency, developed using Design Science Research Methodology (DSRM) and tested using User Accepted Testing (UAT). It also act as Knowledge Management about tourism event data and tourist demand. Conclusion, all tourism event can be managed well and all event organizers can manage their tourism event data easier.","PeriodicalId":52825,"journal":{"name":"Journal of Electrical Electronics and Informatics","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80967275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-08-31DOI: 10.24843/JEEI.2018.V02.I02.P01
A. Amrita, W. G. Ariastina, Ida B. G. Manuaba
Power transformer is very important in electric power system due to its function to raise or lower the voltage according to its designation. On the power side, the power transformer serves to raise voltage to be transmitted to the transmission line. On the transmission side, the power transformer serves to distribute the voltage between the main substations or down to the distribution voltage. On the distribution side, the stresses are channeled to large customers or lowered to serve small and medium customers. As the power transformer is so importance, it is necessary to protect against disturbance, as well as routine and periodic maintenance, so that the power transformer can operate in accordance with the planned time. Some factors that affect the duration of the power transformer is the ambient temperature, transformer oil temperature, and the pattern of load. Load that exceeds the maximum efficiency of the transformer which is 80% of its capacity will cause an increase in transformer oil temperature. Transformer oil, other than as a cooling medium also serves as an insulator. Increasing the temperature of transformer oil will affect its ability as an isolator that is to isolate the parts that are held in the transformer, such as iron core and the coils. If this is prolonged and not handled properly, it will lead to failure / breakdown of insulation resulting in short circuit between parts so that the power transformer will be damaged. PLN data indicates that the power transformer is still burdened exceeding maximum efficiency especially operating in the work area of PLN South Bali Area. The results of this study, on distribution transformers with different loads, in DS 137, DS 263 and DS 363, show that DS 363 transformer with loading above 80% has the shortest residual life time compared to DS 263 and DS 137 which loading less than 80%.
{"title":"Study of Transformer Lifetime Due to Loading Process on 20 KV Distribution Line","authors":"A. Amrita, W. G. Ariastina, Ida B. G. Manuaba","doi":"10.24843/JEEI.2018.V02.I02.P01","DOIUrl":"https://doi.org/10.24843/JEEI.2018.V02.I02.P01","url":null,"abstract":"Power transformer is very important in electric power system due to its function to raise or lower the voltage according to its designation. On the power side, the power transformer serves to raise voltage to be transmitted to the transmission line. On the transmission side, the power transformer serves to distribute the voltage between the main substations or down to the distribution voltage. On the distribution side, the stresses are channeled to large customers or lowered to serve small and medium customers. As the power transformer is so importance, it is necessary to protect against disturbance, as well as routine and periodic maintenance, so that the power transformer can operate in accordance with the planned time. Some factors that affect the duration of the power transformer is the ambient temperature, transformer oil temperature, and the pattern of load. Load that exceeds the maximum efficiency of the transformer which is 80% of its capacity will cause an increase in transformer oil temperature. Transformer oil, other than as a cooling medium also serves as an insulator. Increasing the temperature of transformer oil will affect its ability as an isolator that is to isolate the parts that are held in the transformer, such as iron core and the coils. If this is prolonged and not handled properly, it will lead to failure / breakdown of insulation resulting in short circuit between parts so that the power transformer will be damaged. PLN data indicates that the power transformer is still burdened exceeding maximum efficiency especially operating in the work area of PLN South Bali Area. The results of this study, on distribution transformers with different loads, in DS 137, DS 263 and DS 363, show that DS 363 transformer with loading above 80% has the shortest residual life time compared to DS 263 and DS 137 which loading less than 80%.","PeriodicalId":52825,"journal":{"name":"Journal of Electrical Electronics and Informatics","volume":"42 1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90901012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-08-31DOI: 10.24843/jeei.2018.v02.i02.p04
I. Rinas, I. M. Suartika, A. A. M. Pemayun
Non-linear loads are the source of harmonic current for electric utilities. The high level of harmonics greatly affects the increase of losses of electrical power (losses). The quality of electric power is determined by the parameters of power losses that occur in the transformer due to harmonic distortion. In this research will be analyzed THD from result of measurement and simulation in accordance with IEEE 519-2014 standard, power loss analysis on transformer before and after. Harmonics, the impact is increased due to unbalanced linear currents.
{"title":"Analysis of the Increase of Transformer Power Losses due to the Operation of Unbalanced Nonlinier Loads","authors":"I. Rinas, I. M. Suartika, A. A. M. Pemayun","doi":"10.24843/jeei.2018.v02.i02.p04","DOIUrl":"https://doi.org/10.24843/jeei.2018.v02.i02.p04","url":null,"abstract":"Non-linear loads are the source of harmonic current for electric utilities. The high level of harmonics greatly affects the increase of losses of electrical power (losses). The quality of electric power is determined by the parameters of power losses that occur in the transformer due to harmonic distortion. In this research will be analyzed THD from result of measurement and simulation in accordance with IEEE 519-2014 standard, power loss analysis on transformer before and after. Harmonics, the impact is increased due to unbalanced linear currents.","PeriodicalId":52825,"journal":{"name":"Journal of Electrical Electronics and Informatics","volume":"62 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89320561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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