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2019 54th International Universities Power Engineering Conference (UPEC)最新文献

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Development of Scaled Simulator for Designing Power Storage System 用于电力存储系统设计的比例模拟器的研制
2019 54th International Universities Power Engineering Conference (UPEC) Pub Date : 2019-09-01 DOI: 10.1109/UPEC.2019.8893635
R. Gondo, M. Ishii, Takahiro Shoda, Tomoyuki Suzuki, M. Bezha, N. Nagaoka
{"title":"Development of Scaled Simulator for Designing Power Storage System","authors":"R. Gondo, M. Ishii, Takahiro Shoda, Tomoyuki Suzuki, M. Bezha, N. Nagaoka","doi":"10.1109/UPEC.2019.8893635","DOIUrl":"https://doi.org/10.1109/UPEC.2019.8893635","url":null,"abstract":"Some of the authors have developed a battery charger and discharger with an arbitrary current waveform, and the results have been presented at UPEC 2017. In this paper, the system has improved, and a scaled simulator for designing the power storage system is developed using the feature of the arbitrary current charging/discharging. The system enables to simulate a storage system for any power plant with a load such as a wind power generation, and a photovoltaic power generation. In addition, the system can model a battery charger with a pulse current method for prolonging the battery life for the electric vehicle. The characteristics of the storage system can be investigated using a real battery such as lithium ion, nickel hydride and lead acid batteries for comparative experiments. The system simulates the storage systems taking into consideration the battery chemical reaction that is difficult to include in conventional numerical simulations. In addition, the battery characteristics are easily tested by the proposed simulator. As a result, the practical simulation of future power-storage systems is realized. The low-cost and small-sized simulator can be used for designing not only power storage systems but also into consumer apparatuses.","PeriodicalId":6670,"journal":{"name":"2019 54th International Universities Power Engineering Conference (UPEC)","volume":"30 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84282560","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
Ancillary services provision by aggregators and impact on distribution network operation 集成商提供的辅助服务及对配电网运作的影响
2019 54th International Universities Power Engineering Conference (UPEC) Pub Date : 2019-09-01 DOI: 10.1109/UPEC.2019.8893612
M. Agostini, F. Bignucolo, M. Coppo, R. Turri, J. M. Schwidtal
{"title":"Ancillary services provision by aggregators and impact on distribution network operation","authors":"M. Agostini, F. Bignucolo, M. Coppo, R. Turri, J. M. Schwidtal","doi":"10.1109/UPEC.2019.8893612","DOIUrl":"https://doi.org/10.1109/UPEC.2019.8893612","url":null,"abstract":"The growth of distributed energy resources (DER) connected at distribution network level and the current legislation concerning the participation of DER to the energy and ancillary services markets, are a huge opportunity to get flexibility services from these resources but at the same time a great challenge from the technical point of view. According to the latest indications from EU Directives, demand response and generation flexibility are encouraged in order to meet network balancing needs, but a new actor is required: the aggregator. This new participant has the duty to aggregate consumption and generation in order to offer flexibility products in the ancillary services market, while ensuring the technical feasibility and assuring revenues for its clients and itself. This work focuses on the structure and the business model of aggregators and discusses the technical implication that such role has on the distribution network.","PeriodicalId":6670,"journal":{"name":"2019 54th International Universities Power Engineering Conference (UPEC)","volume":"73 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81532393","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
The Investigation on Electrical Characteristic of Saline Solution 生理盐水溶液的电特性研究
2019 54th International Universities Power Engineering Conference (UPEC) Pub Date : 2019-09-01 DOI: 10.1109/UPEC.2019.8893629
P. Chaisiri, P. Yutthagowith
{"title":"The Investigation on Electrical Characteristic of Saline Solution","authors":"P. Chaisiri, P. Yutthagowith","doi":"10.1109/UPEC.2019.8893629","DOIUrl":"https://doi.org/10.1109/UPEC.2019.8893629","url":null,"abstract":"This paper presents the investigation of electrical characteristic of saline solution in the term of electrical resistivity and relative permittivity in the frequency range from 100 Hz to 100 MHz. The electrical resistivity and relative permittivity are calculated from resistance and capacitance of saline solution. The experimental results provide the technical data of the insulating liquid which is very useful for liquid insulator design applied for a part of high volt component.","PeriodicalId":6670,"journal":{"name":"2019 54th International Universities Power Engineering Conference (UPEC)","volume":"97 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86101987","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: 1
Identification of Required Converter Models for a Simplified Short Circuit Current Calculation of DC Distribution Grids 简化直流配电网短路电流计算所需变换器模型的确定
2019 54th International Universities Power Engineering Conference (UPEC) Pub Date : 2019-09-01 DOI: 10.1109/UPEC.2019.8893512
Raphael Bleilevens, A. Moser
{"title":"Identification of Required Converter Models for a Simplified Short Circuit Current Calculation of DC Distribution Grids","authors":"Raphael Bleilevens, A. Moser","doi":"10.1109/UPEC.2019.8893512","DOIUrl":"https://doi.org/10.1109/UPEC.2019.8893512","url":null,"abstract":"DC distribution grids are subject of current research. One important aspect is a simplified short circuit current calculation for designing and selecting grid equipment. For a simplified short circuit current calculation method as less as possible models are desired. Therefore, this paper investigates the behavior of different converter topologies in case of a DC short circuit by conducting transient simulations. Based on the investigations the minimal acceptable number of required models for approximating the short circuit current contribution of converters is identified. As a result the minimal acceptable number of standard models of converters for a simplified short circuit current calculation is five. With these five standard models the short circuit current contribution of all converter topologies can be approximated accurately.","PeriodicalId":6670,"journal":{"name":"2019 54th International Universities Power Engineering Conference (UPEC)","volume":"22 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81978053","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: 1
Integrating Energy Storage Systems and Transmission Expansion Planning in Renewable Energy Sources Power Systems 集成储能系统与可再生能源电力系统的传输扩展规划
2019 54th International Universities Power Engineering Conference (UPEC) Pub Date : 2019-09-01 DOI: 10.1109/UPEC.2019.8893486
C. Sima, M. Popescu, C. Popescu, G. Lăzăroiu
{"title":"Integrating Energy Storage Systems and Transmission Expansion Planning in Renewable Energy Sources Power Systems","authors":"C. Sima, M. Popescu, C. Popescu, G. Lăzăroiu","doi":"10.1109/UPEC.2019.8893486","DOIUrl":"https://doi.org/10.1109/UPEC.2019.8893486","url":null,"abstract":"Energy storage systems (ESS) are more and more used in power systems where renewable energy sources (RES) are integrated. ESS can participate in frequency control and also represents a flexible solution to supply the demands in power systems. The mathematical model presented in this paper minimizes the investment costs, load shedding costs and generation costs, concomitant with integrating ESS and building new transmission lines if the capacity of the existing ones is not sufficient.","PeriodicalId":6670,"journal":{"name":"2019 54th International Universities Power Engineering Conference (UPEC)","volume":"26 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72572356","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: 11
Calculation and Modeling of Compensating the Power Lost Due to Transmission Resistance of Overhead DC Network for Electric Transport 电力运输架空直流网络传输电阻损失补偿的计算与建模
2019 54th International Universities Power Engineering Conference (UPEC) Pub Date : 2019-09-01 DOI: 10.1109/UPEC.2019.8893497
Ģ. Staņa, V. Brazis
{"title":"Calculation and Modeling of Compensating the Power Lost Due to Transmission Resistance of Overhead DC Network for Electric Transport","authors":"Ģ. Staņa, V. Brazis","doi":"10.1109/UPEC.2019.8893497","DOIUrl":"https://doi.org/10.1109/UPEC.2019.8893497","url":null,"abstract":"This paper discusses possibilities how to simulate transmission losses of electric public transport connected to overhead DC network. The first variant is the application of resistor subsystem; the second is to change the voltage of the substation imitating voltage source according to additional calculation of transmission voltage drop, thus simulating the voltage drop of trolleybus filter capacitor; the third is to calculate transmission losses mathematically. In frames of the latter variant, there is described a method how to calculate transmission losses by using transmission resistance value calculated in during simulation and the value of the measured current that corresponds to an ideal case without transmission losses. The correctness of the described variants was confirmed by the results of the virtual simulations with the results nearly overlapping.","PeriodicalId":6670,"journal":{"name":"2019 54th International Universities Power Engineering Conference (UPEC)","volume":"16 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79174604","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
Flicker’s sources identification using a case-based reasoning prototype 使用基于案例的推理原型的闪烁源识别
2019 54th International Universities Power Engineering Conference (UPEC) Pub Date : 2019-09-01 DOI: 10.1109/UPEC.2019.8893585
A. Miron, A. Cziker, Hadrian C. Bogariu
{"title":"Flicker’s sources identification using a case-based reasoning prototype","authors":"A. Miron, A. Cziker, Hadrian C. Bogariu","doi":"10.1109/UPEC.2019.8893585","DOIUrl":"https://doi.org/10.1109/UPEC.2019.8893585","url":null,"abstract":"Flicker is an issue of power quality that affects both the utility companies and consumers. To mitigate and eliminate flicker, the first stage is to identify the source. This paper presents an application of artificial intelligence techniques, namely a knowledge-based system, dedicated for detecting the flicker source. The application is a prototype that was built using case-based reasoning. The main elements of the prototype are the cases that were obtained from in-situ measurements at a power substation over an observation period of a year. The prototype was tested using data from a different power substation. The results show that the prototype detects properly the sources, confirming the utility of artificial intelligence in this field ofpower quality.","PeriodicalId":6670,"journal":{"name":"2019 54th International Universities Power Engineering Conference (UPEC)","volume":"65 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80609508","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: 1
A Genetic Algorithm Driven Linear Programming for Battery Optimal Scheduling in nearly Zero Energy Buildings 近零能耗建筑电池优化调度的遗传算法驱动线性规划
2019 54th International Universities Power Engineering Conference (UPEC) Pub Date : 2019-09-01 DOI: 10.1109/UPEC.2019.8893514
G. Georgiou, P. Nikolaidis, L. Lazari, P. Christodoulides
{"title":"A Genetic Algorithm Driven Linear Programming for Battery Optimal Scheduling in nearly Zero Energy Buildings","authors":"G. Georgiou, P. Nikolaidis, L. Lazari, P. Christodoulides","doi":"10.1109/UPEC.2019.8893514","DOIUrl":"https://doi.org/10.1109/UPEC.2019.8893514","url":null,"abstract":"EU has seen an increasing demand for both nearly zero energy buildings (nZEBs) and building integrated Photovoltaic (BIPV) systems in the last decade. This stems from the energy-driven regulations relating to building efficiency improvements, requiring more realistic and smarter techniques to strengthen their employment and overall performance. Apart from the passive energy-efficiency measures of nZEBs (such as thermal insulation, energy saving appliances, etc.), more advanced and sophisticated energy management mechanisms have to take place in order to accommodate and support their crucial contribution to sustainable development. This paper presents the daily optimum dispatch of a battery, in a building with PV, using Linear Programming (LP) driven by Genetic Algorithm (GA), aiming the minimization of the building’s net energy. The obtained results show that there is a high potential of using such approaches for maintaining the net grid energy levels of a building as minimum as possible.","PeriodicalId":6670,"journal":{"name":"2019 54th International Universities Power Engineering Conference (UPEC)","volume":"195 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75915204","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
Theoretical analysis of voltage instability conditions in distribution networks 配电网电压不稳定条件的理论分析
2019 54th International Universities Power Engineering Conference (UPEC) Pub Date : 2019-09-01 DOI: 10.1109/UPEC.2019.8893520
I. Tristiu, Andreea Ianţoc, D. Poștovei, C. Bulac, Mădălina Arhip
{"title":"Theoretical analysis of voltage instability conditions in distribution networks","authors":"I. Tristiu, Andreea Ianţoc, D. Poștovei, C. Bulac, Mădălina Arhip","doi":"10.1109/UPEC.2019.8893520","DOIUrl":"https://doi.org/10.1109/UPEC.2019.8893520","url":null,"abstract":"Distribution power networks represent an essential sector of electric power systems, due to the role, volume and spread of its components. The electric line ratio of lengthwise parameters specific to transmission system is different than the one specific to distribution system. For this reason, some hypothesis cannot be considered on voltage stability analysis. The aim of this article is to do a theoretical analysis concerning voltage instability condition of distribution network. For a radial electrical network with a single load, the domain of stable operating regime is deduced analytically and the instability limits for different cases are analyzed.","PeriodicalId":6670,"journal":{"name":"2019 54th International Universities Power Engineering Conference (UPEC)","volume":"9 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80211759","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
Comparative Performance of Fault ride through Controller in Modular Multilevel Converter based HVDC Transmission 基于模块化多电平变换器的直流输电故障穿越控制器的性能比较
2019 54th International Universities Power Engineering Conference (UPEC) Pub Date : 2019-09-01 DOI: 10.1109/UPEC.2019.8893539
O. Olowookere, Y. Habtay, S. Woodhead, S. Skarvelis-Kazakos
{"title":"Comparative Performance of Fault ride through Controller in Modular Multilevel Converter based HVDC Transmission","authors":"O. Olowookere, Y. Habtay, S. Woodhead, S. Skarvelis-Kazakos","doi":"10.1109/UPEC.2019.8893539","DOIUrl":"https://doi.org/10.1109/UPEC.2019.8893539","url":null,"abstract":"This paper centres on the performance of PI and hysteresis controllers for AC fault ride through for an MMC VSC - HVDC transmission system. In the simulated MMC converter test system, a 600 MW VSC-HVDC transmission line connects two farms, formed from combined offshore wind turbines and wave converters, to the two onshore AC grids. The model in this study included two 300kV DC submarine cables with a cable length of 100km. In the reported simulation a three-phase to ground fault, a single line to ground fault, a double line to ground fault and a line-to-line fault were applied to the onshore AC network. The simulation results reveal reductions in DC voltage overshoot and transient energy with the PI-based controller (compared to the hysteresis controller) for 3- phase to ground, line to ground and line - to - line to ground faults respectively, with no difference for line-to-line faults.","PeriodicalId":6670,"journal":{"name":"2019 54th International Universities Power Engineering Conference (UPEC)","volume":"317 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77427304","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: 1
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