2017 International Electrical Engineering Congress (iEECON)最新文献

{"title":"A controller design of more electric aircraft power systems using an adaptive Tabu search algorithm","authors":"Apichai Suyapan, Kongpan Areerak, K. Areerak","doi":"10.1109/IEECON.2017.8075744","DOIUrl":"https://doi.org/10.1109/IEECON.2017.8075744","url":null,"abstract":"This paper presents the optimal controller design for more electric aircraft power systems using an adaptive tabu search. The simple block diagrams are used as the objective function to evaluate the quality of each solution. The simulation results show that the proposed technique can provide the best output performance compared with those of conventional method. Moreover, this technique is very useful for engineers to design the controller with good performances.","PeriodicalId":196081,"journal":{"name":"2017 International Electrical Engineering Congress (iEECON)","volume":"210 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133477588","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}

{"title":"Optimal design of fractional order digital differentiator using gravitational search algorithm","authors":"S. Mahata, Shruti Dhibar, R. Kar, D. Mandal, S. Saha","doi":"10.1109/IEECON.2017.8075864","DOIUrl":"https://doi.org/10.1109/IEECON.2017.8075864","url":null,"abstract":"Design of wideband and accurate Fractional Order Digital Differentiator (FODD) in terms of infinite impulse response (IIR) filter based on a metaheuristic optimization technique called Gravitational Search Algorithm (GSA) is presented in this work. In comparison with the FODDs based on four other metaheuristics, the GSA based design consistently demonstrates a superior solution quality and an improved convergence rate. The proposed FODD also significantly outperforms the designs based on various classical and non-classical approaches reported in the literature.","PeriodicalId":196081,"journal":{"name":"2017 International Electrical Engineering Congress (iEECON)","volume":"436 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113988785","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}

{"title":"Social-aware relay selection for device to device communications in cooperative cellular networks","authors":"Ushik Shrestha Khwakhali, Steven Gordon, Prapun Suksompong","doi":"10.1109/IEECON.2017.8075812","DOIUrl":"https://doi.org/10.1109/IEECON.2017.8075812","url":null,"abstract":"Social information of users can be integrated in device to device communications to enhance performance of a cooperative cellular networks. This paper presents a Social-aware Midpoint Relay Selection Scheme which improves average throughput of the network by selecting a relay which is socially connected to the source and located near to midpoint of source and destination. We show the average throughput of our scheme can improve upon Pan and Wang's Hybrid Relay Selection Scheme (by upto 11%) as well as direct transmission.","PeriodicalId":196081,"journal":{"name":"2017 International Electrical Engineering Congress (iEECON)","volume":"424 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115097072","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}

{"title":"Proving completeness of OpenGIS SQL spatial relationships and operations","authors":"Kulsawasd Jitkajornwanich, R. Elmasri","doi":"10.1109/IEECON.2017.8075815","DOIUrl":"https://doi.org/10.1109/IEECON.2017.8075815","url":null,"abstract":"OpenGIS SQL is a standard for incorporating GIS and spatial concepts into SQL. Two types of methods are part of OpenGIS SQL: (1) boolean methods for topological relationships among spatial objects, and (2) methods for specifying spatial operations. We prove that the complete set of 2-dimensional spatial relationships defined by Egenhofer can all be specified using OpenGIS SQL operations and relationships. Our proof shows how each spatial relationship can be specified using OpenGIS SQL and thus provides users with the means of determining how each spatial relationship can be written in SQL. This provides users with enhanced usability and flexibility by providing the specific OpenGIS conditions for every possible 2-dimensional spatial relationship.","PeriodicalId":196081,"journal":{"name":"2017 International Electrical Engineering Congress (iEECON)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116140410","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}

{"title":"Optimal placement model of TCSC in power system network considering the budget available","authors":"E. Malatji, Bhekisipho Twala, N. Mbuli","doi":"10.1109/IEECON.2017.8075732","DOIUrl":"https://doi.org/10.1109/IEECON.2017.8075732","url":null,"abstract":"This paper presents an optimal placement of TCSC which is a FACTS (Flexible Alternative Current transmission Systems) controller in order to increase the loadbility of the system. The optimization problem is solved using the genetic algorithm. In this study the availablity of the budget is taken in consideration. The result show that the increase in loadability can be restricted by the availability of budget and also that beyond a certain budget there will not be any further increase in loadability. Also beyond a certain number of TCSC there will be no further increase in system loadability.","PeriodicalId":196081,"journal":{"name":"2017 International Electrical Engineering Congress (iEECON)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115523536","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}

{"title":"Security of connecting SIP trunk via SBC on IMS network","authors":"Soraya Pantunn, S. Pattaramalai","doi":"10.1109/IEECON.2017.8075845","DOIUrl":"https://doi.org/10.1109/IEECON.2017.8075845","url":null,"abstract":"In this paper, we have studied and described the security of SIP Trunk on IMS network (IP Multimedia Subsystem) via SBC (Session Border Controller), introduced a model by installing SBC to connect between IMS Network and IP-PBX in concept of SIP Trunk and present new method to increase performance of SIP Trunk by specified concurrent call, setting the caller discrimination to filter subscriber number that are not specified in the system cannot call via SIP Trunk (To prevent Hijacked subscriber illegally) and limit minimum and maximum digit of subscriber in the system to protect the security from inside and outside attacker that can effected the performance of network. Furthermore, we have set the experiment with the live network by installing the system follow by system model consists of PBX server connected to IMS network (IP Multimedia Subsystem) via SBC (SBC is installed between IMS network and IP PBX, using wireshark to monitor and analyze signaling flow of each equipment. Finally, the result from experiment are show the system model can secure and protect system from inside and outside attacker including prevent Hijacked subscriber illegally and can be used to increase the performance of SIP Trunk security in live network efficiently.","PeriodicalId":196081,"journal":{"name":"2017 International Electrical Engineering Congress (iEECON)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123082842","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}

{"title":"A 1.1-V low power true single-phase clock 2/3 prescaler","authors":"S. Tooprakai, S. Wisetphanichkij, Apirak Tudsorn","doi":"10.1109/IEECON.2017.8075903","DOIUrl":"https://doi.org/10.1109/IEECON.2017.8075903","url":null,"abstract":"This paper is proposed a low-power CMOS 2/3 prescaler using true single-phase technique on 45 nm CMOS technology with 1.1 V. The true-single-phase clock divider is used to achieve low power. The prescaler is capable of operating from 1 to 16 GHz. When operating at 1 GHz, it saves more power consumption compared to that of a conventional circuit and low-power true single-phase clock CMOS 2/3 prescalers circuit operating in divide-by-2 mode and in divide-by-3 mode, respectively.","PeriodicalId":196081,"journal":{"name":"2017 International Electrical Engineering Congress (iEECON)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123121839","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}

{"title":"The variable forgetting factor-based local average model algorithm for prediction of financial time series","authors":"P. Intachai, P. Yuvapoositanon","doi":"10.1109/IEECON.2017.8075876","DOIUrl":"https://doi.org/10.1109/IEECON.2017.8075876","url":null,"abstract":"In this paper, we propose a variable forgetting factor-based local average model for estimation of future values of financial time series. The forgetting factor is applied to the existing local average model to govern the weights of past records for the estimation of the future records. By using the trend direction from the turning points of the financial time series, the value of the forgetting factor can be estimated. The results of performance comparison between the proposed variable forgetting factor-based local average model and the original local average model on the actual time series derived from the stocks listed in the Stock Exchange of Thailand are shown. The results suggest that the proposed method offers consistent less prediction errors than the existing method.","PeriodicalId":196081,"journal":{"name":"2017 International Electrical Engineering Congress (iEECON)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126258667","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}

{"title":"Partial discharge characteristics of mineral oil compared with natural ester","authors":"N. Pattanadech, S. Maneerot, K. Jariyanurat, P. Nimsanong","doi":"10.1109/IEECON.2017.8075763","DOIUrl":"https://doi.org/10.1109/IEECON.2017.8075763","url":null,"abstract":"In this paper, partial discharge inception voltage (PDIV) and partial discharge (PD) characteristics of mineral oil compared with natural ester were studies. Three typical PD types, corona discharge of the liquid insulations, surface discharge and internal discharge of the liquid impregnated pressboards were investigated. In case of corona discharge, both corona discharges from high voltage side and from low voltage side were simulated by using the needle-plane electrode configuration. The needle with the tip radius of 10μm, 20μm, 40μm respectively was used as high voltage electrode while the brass plane electrode with 45 mm diameter was used as the grounded electrode for simulation the corona discharge at high voltage side, and vice versa, for simulation corona discharge at low voltage side. The gap distance was fixed for 30 mm. Moreover, the mineral oil and natural ester were used to impregnate the pressboards which were 1.6 mm thick. Then, the impregnated pressboards were selected to experiment for surface discharge and internal discharge respectively. The surface discharge experiment was performed with the 40μm tip radius needle as high voltage electrode put on the ten pieces of 12 hour impregnated pressboards stuck together as a single insulation and the plane electrode with 45 mm diameter as grounded electrode. In case of the internal discharge, ten pieces of 6 hour impregnated pressboards were stuck together as a single insulation. A cylindrical void with 5 mm diameter and a height of 3.2 mm was simulated at the middle of the insulation. Then, the insulation was placed between the mentioned plane electrodes for the internal discharge experiment. PD test circuit was prepared following to IEC 60270. PDIV was examined by applying the step voltage to the high voltage electrode with the increase rate of 1 kV per step for the step duration of 1 minute until observing the PDIV. Then, PD activity was examined and recorded for 1 minute at 110% PDIV level. Form the test results, the natural ester and pressboards impregnated with natural ester provide higher PDIV than mineral oil and the mineral oil impregnated pressboards. Consequently, the PD amplitude at 1.1 PDIV of natural ester and natural ester impregnated pressboards are higher than that of mineral oil and mineral oil impregnated pressboards.","PeriodicalId":196081,"journal":{"name":"2017 International Electrical Engineering Congress (iEECON)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129759143","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}

{"title":"Modeling of rate of change of under frequency relay for microgrid protection","authors":"Naowarat Tephiruk, K. Hongesombut, Yuthasak Urathamakul, S. Poonvasin, Sanee Tangsatit","doi":"10.1109/IEECON.2017.8075775","DOIUrl":"https://doi.org/10.1109/IEECON.2017.8075775","url":null,"abstract":"This paper presents the permutation of rate of change of under frequency (ROCOUF) relay to avoid the frequency instability and voltage collapses in microgrid. When some of distributed generators (DGs) in a microgrid are disconnected from the main grid, the system may be imbalance between the power supply and the power demand, resulting in a rapid frequency decline that causes frequency instability in a microgrid. To solve this problem, this paper proposes the development of a modified conventional load shedding scheme using ROCOUF relay. The modeling and simulation of ROCOUF relay is applied and designed for inspection and identification of the severity of disturbance in a microgrid to improve the digital logic of ROCOUF relay so that preventing the frequency and voltage instability in microgrid. The simulation results in this paper are verified by using DIgSILENT PowerFactory software.","PeriodicalId":196081,"journal":{"name":"2017 International Electrical Engineering Congress (iEECON)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129475273","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}