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DC-PLC Modem design for PV module monitoring 用于光伏组件监控的DC-PLC调制解调器设计
Journal of International Council on Electrical Engineering Pub Date : 2016-08-10 DOI: 10.1080/22348972.2016.1217817
Seong-Duc Ma, Min-Su Park, Jae-Eon Kim
{"title":"DC-PLC Modem design for PV module monitoring","authors":"Seong-Duc Ma, Min-Su Park, Jae-Eon Kim","doi":"10.1080/22348972.2016.1217817","DOIUrl":"https://doi.org/10.1080/22348972.2016.1217817","url":null,"abstract":"AbstractNowadays, power line communication (PLC) is a very efficient technique in cost aspect because it is communication system using power line without extra communication cables. In case of DC-PLC, it send a communication signal of the high frequency band to the monitoring system through the DC power line and is widely used for DC grid or the distributed generation system using DC source. Especially, the management system which evaluates the performance and efficiency of PV module by measuring PV power through monitoring system based on the DC-PLC has been increased. In this paper, apply the DC-PLC method for low cost PV module monitoring system and constitutes a measuring device and communication modem on a MCU. For the communication performance, we use the digital filter and apply the multi-carrier communication. The proposed DC-PLC Modem is verified through simulation and experiment.","PeriodicalId":150994,"journal":{"name":"Journal of International Council on Electrical Engineering","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134038556","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}
引用次数: 3
Reconfiguration for load balancing of feeder in distribution system including distributed generation 包括分布式发电在内的配电系统中馈线负荷平衡的重构
Journal of International Council on Electrical Engineering Pub Date : 2016-08-05 DOI: 10.1080/22348972.2016.1217815
Hyeongig Kim, Y. Yoon
{"title":"Reconfiguration for load balancing of feeder in distribution system including distributed generation","authors":"Hyeongig Kim, Y. Yoon","doi":"10.1080/22348972.2016.1217815","DOIUrl":"https://doi.org/10.1080/22348972.2016.1217815","url":null,"abstract":"AbstractThere are several types of load in distribution system. The load value that represents the varying load with time is needed to be estimated for reconfiguration because the system is reconfigured in non-real time. Specially, as the power system develops as the smart grid, the amount of distributed generations is increased. Since the variability of distributed generations’ output is higher compared to normal generations, it is important that which representative value is used for variable output when an algorithm performs. In addition, the reversed current caused by distributed generation should be considered. In this paper, we propose a method to choose representative value considering distribution generation and variable load and also a constraint considering the reversed current. By this method, we study the distribution system reconfiguration for reliable and efficient operating.","PeriodicalId":150994,"journal":{"name":"Journal of International Council on Electrical Engineering","volume":"360 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133200924","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}
引用次数: 3
A basic study on novel islanding detection method for photovoltaic inverters by positive feedback of harmonic voltage 基于谐波电压正反馈的新型光伏逆变器孤岛检测方法的基础研究
Journal of International Council on Electrical Engineering Pub Date : 2016-07-12 DOI: 10.1080/22348972.2016.1202397
Y. Yoshida, Hirokazu Suzuki
{"title":"A basic study on novel islanding detection method for photovoltaic inverters by positive feedback of harmonic voltage","authors":"Y. Yoshida, Hirokazu Suzuki","doi":"10.1080/22348972.2016.1202397","DOIUrl":"https://doi.org/10.1080/22348972.2016.1202397","url":null,"abstract":"AbstractWe have proposed an islanding detection method using the harmonic current as an active signal. In particular, in order to inject the active signal efficiently, we have proposed a method to synchronize the harmonic voltage caused by the active signal of DG with the harmonic voltage caused by the harmonic current of the load. To verify the validity of the proposed methods, we performed the simulation by PSCAD/EMTDC and the calculation by circuit theory. We clarified that the synchronous injection can be greatly reduced the islanding detection time.","PeriodicalId":150994,"journal":{"name":"Journal of International Council on Electrical Engineering","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124480032","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}
引用次数: 2
Stepwise inertial control of a wind turbine generator to minimize a second frequency dip 风力发电机的逐步惯性控制，以减少第二次频率下降
Journal of International Council on Electrical Engineering Pub Date : 2016-07-05 DOI: 10.1080/22348972.2016.1202396
Dejian Yang, J. Lee, Y. Kang
{"title":"Stepwise inertial control of a wind turbine generator to minimize a second frequency dip","authors":"Dejian Yang, J. Lee, Y. Kang","doi":"10.1080/22348972.2016.1202396","DOIUrl":"https://doi.org/10.1080/22348972.2016.1202396","url":null,"abstract":"AbstractWind turbine generators (WTGs) in power systems with high wind penetration levels are encouraged or forced to participate in frequency control. A stepwise inertial control (SIC) scheme instantly increases WTG output to arrest the frequency drop for a preset period upon detecting a disturbance. After arresting the frequency drop, the output is rapidly reduced to recover the rotor speed. The reduction could cause a power deficit to the power system, which in turn results in a second frequency dip (SFD). This paper proposes an SIC scheme that can improve the frequency nadir (FN) and maximum rate of change of frequency (ROCOF) while minimizing an SFD. To achieve this, a reference function is separately defined prior to and after the FN. To improve the FN and maximum ROCOF, the output is instantly increased by adding a constant, which is proportional to the rotor speed, and maintaining it until the FN is reached. To minimize an SFD, the output is slowly reduced with the rotor speed. This reduction ensu...","PeriodicalId":150994,"journal":{"name":"Journal of International Council on Electrical Engineering","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122371632","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}
引用次数: 3
Improvement of frequency stability by using battery to compensate rate shortage of LFC reserve 利用电池补偿LFC备用电量不足，提高频率稳定性
Journal of International Council on Electrical Engineering Pub Date : 2016-07-04 DOI: 10.1080/22348972.2016.1202398
D. Orihara, H. Saitoh
{"title":"Improvement of frequency stability by using battery to compensate rate shortage of LFC reserve","authors":"D. Orihara, H. Saitoh","doi":"10.1080/22348972.2016.1202398","DOIUrl":"https://doi.org/10.1080/22348972.2016.1202398","url":null,"abstract":"AbstractBy introducing large amount of renewable energy sources and electricity deregulation, procuring sufficient reserve power for Load Frequency Control (LFC) becomes difficult for system operator. In this paper, at first, impact of ramp rate shortage on frequency stability is shown by simulation study. Next, a novel battery utilization method is proposed to compensate the rate shortage. In the method, a battery is driven by the component of LFC signal which cannot be responded by existing LFC units. Through comparison study with conventional battery control method, it is clarified that the proposed method can efficiently improve LFC performance under the large amount of renewable energy sources interconnection.","PeriodicalId":150994,"journal":{"name":"Journal of International Council on Electrical Engineering","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133745441","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}
引用次数: 3
Evaluation of coordinated energy management system for grid and home in distribution system with PVs 带pv配电系统中电网与家庭协调能源管理系统的评价
Journal of International Council on Electrical Engineering Pub Date : 2016-06-20 DOI: 10.1080/22348972.2016.1173786
S. Yoshizawa, Akira Yoshida, Shunsuke Kawano, Y. Fujimoto, Y. Amano, Y. Hayashi
{"title":"Evaluation of coordinated energy management system for grid and home in distribution system with PVs","authors":"S. Yoshizawa, Akira Yoshida, Shunsuke Kawano, Y. Fujimoto, Y. Amano, Y. Hayashi","doi":"10.1080/22348972.2016.1173786","DOIUrl":"https://doi.org/10.1080/22348972.2016.1173786","url":null,"abstract":"AbstractThis paper presents a coordinated energy management system (EMS) based on time-of-use pricing. The proposed EMS consists of prediction, operational planning, and control stages. To minimize amounts of curtailed PV output, operational costs, and voltage violations, line-drop compensation parameters are determined based on an input-output relationship database in the grid EMS. In the home EMS, an energy equipment operational plan is developed with a stochastic optimization problem (SP) to accommodate unavoidable uncertainties. Numerical simulations based on an actual distribution system model are performed, confirming the improved performance of the proposed method compared with the conventional method.","PeriodicalId":150994,"journal":{"name":"Journal of International Council on Electrical Engineering","volume":"152 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122130661","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}
引用次数: 4
Transition and verification of ground fault protection method in Hokuriku Shinkansen line 北陆新干线接地故障保护方法的过渡与验证
Journal of International Council on Electrical Engineering Pub Date : 2016-06-07 DOI: 10.1080/22348972.2016.1181822
M. Koyanagi, Toshiaki Takino, H. Hayashiya, S. Matsuoka, A. Kumada, K. Hidaka
{"title":"Transition and verification of ground fault protection method in Hokuriku Shinkansen line","authors":"M. Koyanagi, Toshiaki Takino, H. Hayashiya, S. Matsuoka, A. Kumada, K. Hidaka","doi":"10.1080/22348972.2016.1181822","DOIUrl":"https://doi.org/10.1080/22348972.2016.1181822","url":null,"abstract":"AbstractThe electrical discharge gaps called S type horn are applied to the ground fault detection and protection in AC traction power supply system for high speed railway called Shinkansen. In this method, the earth resistance of the steel pipe pillar is an important factor for the ground fault protection by the electrical discharge. In this study, the analyses of the transient characteristics of grounding fault are carried out by using EMTP, and the ground resistance value required to trigger discharge at S type horn was calculated. Moreover, the protection effect of a discharge gap called GP the substation equipment that is a discharge gap which is inserted between rails and substation mesh is evaluated.","PeriodicalId":150994,"journal":{"name":"Journal of International Council on Electrical Engineering","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133587718","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}
引用次数: 2
Transient voltage control of a DFIG-based wind power plant for suppressing overvoltage using a reactive current reduction loop 基于dfig的风电场暂态电压控制的无功减流回路抑制过电压
Journal of International Council on Electrical Engineering Pub Date : 2016-06-07 DOI: 10.1080/22348972.2016.1189809
Geon-Min Park, Jinho Kim, Y. Kang
{"title":"Transient voltage control of a DFIG-based wind power plant for suppressing overvoltage using a reactive current reduction loop","authors":"Geon-Min Park, Jinho Kim, Y. Kang","doi":"10.1080/22348972.2016.1189809","DOIUrl":"https://doi.org/10.1080/22348972.2016.1189809","url":null,"abstract":"This paper proposes a transient voltage control scheme of a doubly fed induction generator (DFIG)-based wind power plant (WPP) using a reactive current reduction loop to suppress the overvoltage at...","PeriodicalId":150994,"journal":{"name":"Journal of International Council on Electrical Engineering","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115268499","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}
引用次数: 2
Improvement of small-signal stability of power system by controlling doubly fed induction generators of a large-capacity wind farm 控制大容量风电场双馈感应发电机改善电力系统小信号稳定性
Journal of International Council on Electrical Engineering Pub Date : 2016-05-13 DOI: 10.1080/22348972.2016.1181701
Tomohiro Adachi, A. Yokoyama
{"title":"Improvement of small-signal stability of power system by controlling doubly fed induction generators of a large-capacity wind farm","authors":"Tomohiro Adachi, A. Yokoyama","doi":"10.1080/22348972.2016.1181701","DOIUrl":"https://doi.org/10.1080/22348972.2016.1181701","url":null,"abstract":"AbstractMany wind turbine generations have been installed into power systems around the world, where in recent years doubly fed induction generator (DFIG) attracts a lot of attentions because of its efficiency and controllability. However, the DFIG is connected to the power system through inverters and originally does not have an ability to release the kinetic energy of the rotor or resorb the surplus power of the power system as the kinetic energy. Therefore, it has not been made clear how the DFIGs have an influence on small-signal stability in power systems. In this paper, we propose a control scheme of the DFIG and analyse its effect on the small-signal stability of the power system by eigenvalue calculations and time-domain simulations.","PeriodicalId":150994,"journal":{"name":"Journal of International Council on Electrical Engineering","volume":"2019 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131506536","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}
引用次数: 4
High efficiency and long life of a three-phase power conditioner via interleave control 采用交错控制的三相电力调节器，效率高，寿命长
Journal of International Council on Electrical Engineering Pub Date : 2016-05-13 DOI: 10.1080/22348972.2016.1173782
K. Amei, T. Takayama, T. Ohji, M. Sakui
{"title":"High efficiency and long life of a three-phase power conditioner via interleave control","authors":"K. Amei, T. Takayama, T. Ohji, M. Sakui","doi":"10.1080/22348972.2016.1173782","DOIUrl":"https://doi.org/10.1080/22348972.2016.1173782","url":null,"abstract":"AbstractThis study describes the high efficiency and long life of three-phase power conditioners of a photovoltaic (PV) system. The current PV system, which is widely spread, has two problems. The first problem is the lifetime of a power conditioner, whereas the other problem is the drop in the efficiency of the conversion because of the characteristics of the solar cell. For those problems, the solar panel and boost chopper circuit were divided into a plurality to configure a power conditioner, and an electrolytic capacitor-less driver with interleave control was realized. The drop in the current generated by the solar cell was suppressed, and an improvement in power generation efficiency was expected. The configuration and principle of a proposed circuit were explained, and results of simulation and experiment were reported.","PeriodicalId":150994,"journal":{"name":"Journal of International Council on Electrical Engineering","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133996947","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}
引用次数: 0
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