2019 International Conference on Smart Energy Systems and Technologies (SEST)最新文献_第3页

Voltage Regulation in Low-Voltage Distribution Grids with Reactive Power Control by Power Conditioning Subsystem Coordination 基于功率调节子系统协调的低压配电网无功控制电压调节

2019 International Conference on Smart Energy Systems and Technologies (SEST) Pub Date : 2019-09-01 DOI: 10.1109/SEST.2019.8849034

K. Fukushima, T. Nayuki, H. Hatta, Hiromu Kobayashi

引用次数: 0

Modular Architecture with Power Optimizers for Photovoltaic Systems 光伏系统的模块化结构与功率优化器

2019 International Conference on Smart Energy Systems and Technologies (SEST) Pub Date : 2019-09-01 DOI: 10.1109/SEST.2019.8849056

João Lucas de Souza Silva, H. S. Moreira, D. B. de Mesquita, M. M. Cavalcante, M. G. Villalva

{"title":"Modular Architecture with Power Optimizers for Photovoltaic Systems","authors":"João Lucas de Souza Silva, H. S. Moreira, D. B. de Mesquita, M. M. Cavalcante, M. G. Villalva","doi":"10.1109/SEST.2019.8849056","DOIUrl":"https://doi.org/10.1109/SEST.2019.8849056","url":null,"abstract":"Solutions that increase efficiency in renewable energy are important for environmental sustainability. In this way, dealing with photovoltaic generation a new architecture constituted by power optimizer for photovoltaic systems emerges. Power optimizer is a DC/DC converter, allocated to each one or two photovoltaic modules, that tries to reduce losses in photovoltaic systems, increasing the photovoltaic power generation. Thus, this paper presents the architecture used in a photovoltaic system with power optimizer and a performance simulation for application in a residence and a photovoltaic plant. Thus, it is possible to measure the gain provided by power optimizer in simulated systems. As a result, the application of the photovoltaic system in residence provided better performance than the application in the photovoltaic plant, due to the greater frequency of shading in the photovoltaic modules. Therefore, power optimizer for photovoltaic systems is a solution that can be considered, mainly with the reduction of the cost of power electronics in the future.","PeriodicalId":158839,"journal":{"name":"2019 International Conference on Smart Energy Systems and Technologies (SEST)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132683693","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: 5

Microgrid Frequency & Voltage Adjustment Applying Virtual Synchronous Generator 应用虚拟同步发电机进行微电网频率电压调整

2019 International Conference on Smart Energy Systems and Technologies (SEST) Pub Date : 2019-09-01 DOI: 10.1109/SEST.2019.8849032

Bahram Pournazarian, E. Pouresmaeil, Meysam Saeedian, M. Lehtonen, Ricky Chan, S. Taheri

{"title":"Microgrid Frequency & Voltage Adjustment Applying Virtual Synchronous Generator","authors":"Bahram Pournazarian, E. Pouresmaeil, Meysam Saeedian, M. Lehtonen, Ricky Chan, S. Taheri","doi":"10.1109/SEST.2019.8849032","DOIUrl":"https://doi.org/10.1109/SEST.2019.8849032","url":null,"abstract":"The distributed generations (DG) are linked to microgrids (MGs) by power converters regularly and the MG will be in mutual interconnection with conventional power systems. The more the participation level of the converter-based DGs in the MG, the more the stability issues are seen in the MG. Unlike conventional synchronous generators (SGs) which have considerable inertia, the converter-based DG units lack this intrinsic inertia; therefore, they potentially make the MG prone to stability issues. The idea to emulate the behavior of SGs in the control loop of interfaced converters to maintain the MGs stability is a newly-growing idea. This paper tends to propose an improved voltage and frequency control strategy for island MGs consisting several converter-based DGs. The proposed control structure uses an advanced Virtual Synchronous Generator (VSG) model and aimed at implementing the primary frequency and voltage control of MGs. The designed model considers both resistive and inductive parameters of lines in MGs. Since the suggested control structure is a local one, doesn't require communication links between DG units. The simulation results verify the potency of the recommended control structure to preserve the frequency and voltage stability of an island MG even in severe events.","PeriodicalId":158839,"journal":{"name":"2019 International Conference on Smart Energy Systems and Technologies (SEST)","volume":"116 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117233011","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: 7

Analysis of Smart Technical Measures Impacts on DER and EV Hosting Capacity Increase in LV and MV Grids in the Czech Republic in Terms of European Project InterFlex 智能技术措施对捷克低压和中压电网DER和EV承载容量增加的影响分析(基于欧洲项目InterFlex

2019 International Conference on Smart Energy Systems and Technologies (SEST) Pub Date : 2019-09-01 DOI: 10.1109/SEST.2019.8849135

Stanislav Hes, J. Kula, J. Svec

引用次数: 2

Assessing the Impacts of Demand-Side Flexibility on the Performance of the Europe-Wide Integrated Day-Ahead Electricity Market 评估需求侧灵活性对欧洲一体化日前电力市场性能的影响

2019 International Conference on Smart Energy Systems and Technologies (SEST) Pub Date : 2019-09-01 DOI: 10.1109/SEST.2019.8849137

Shaghayegh Zalzar, E. Bompard

{"title":"Assessing the Impacts of Demand-Side Flexibility on the Performance of the Europe-Wide Integrated Day-Ahead Electricity Market","authors":"Shaghayegh Zalzar, E. Bompard","doi":"10.1109/SEST.2019.8849137","DOIUrl":"https://doi.org/10.1109/SEST.2019.8849137","url":null,"abstract":"The ever-increasing integration of variable renewable energy sources in the European power systems has brought new challenges to the system operation. The uncontrollability and uncertainty of power production by these resources increases the need for flexibility in power systems to balance supply and demand continuously, while eliminating the curtailment of renewable energy in hours with excess renewable generation. Market integration acts as a solution to increase operational flexibility and facilitate the integration of variable renewable energy sources into the European power system. However, the limited power transfer capacity of the interconnections narrows the potential of market integration to provide adequate flexibility. The required flexibility can also be provided by active participation of demand-side resources in the electricity markets through demand response programs. Therefore, the European Union has already required the member states to remove the barriers of active participation of demand side resources such as demand response programs, alongside supply in wholesale and retail markets. In this regard, this study investigates the impact of different levels of demand-side flexibility in European countries on the market performance of a Europe-wide day-ahead electricity market with reference to five European test cases: Portugal, Sweden, Belgium, the Netherlands, and Denmark. A Europe-wide market scenario for 2030 is generated which models 34 European countries with stochastic scenarios for wind/solar generation and the electricity demand. Day-ahead market performance under different levels of demand-side flexibility is compared in terms of average market prices, generators' profit and cost to loads during 2030.","PeriodicalId":158839,"journal":{"name":"2019 International Conference on Smart Energy Systems and Technologies (SEST)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122361446","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: 7

Comparative Study of Sky Diffuse Irradiance Models Applied to Photovoltaic Systems 天空漫射辐照度模型在光伏系统中的应用比较研究

2019 International Conference on Smart Energy Systems and Technologies (SEST) Pub Date : 2019-09-01 DOI: 10.1109/SEST.2019.8849031

Michelle Kitayama da Silva, K. B. de Melo, T. Costa, Dante Inga Narvez, Daniel de Bastos Mesquita, M. G. Villalva

{"title":"Comparative Study of Sky Diffuse Irradiance Models Applied to Photovoltaic Systems","authors":"Michelle Kitayama da Silva, K. B. de Melo, T. Costa, Dante Inga Narvez, Daniel de Bastos Mesquita, M. G. Villalva","doi":"10.1109/SEST.2019.8849031","DOIUrl":"https://doi.org/10.1109/SEST.2019.8849031","url":null,"abstract":"The increasing energy demand and the search for greener energy resources are expanding interests on photovoltaic systems. These systems need an accurate climatic and irradiation data in order to precisely estimate the energy yield of PV systems. However, most of the available irradiance data, are only for the horizontal plane. The precise estimation of the total irradiance incident on the surface of photovoltaic modules is one of the most important steps in the performance analysis of PV systems. In order to estimate the irradiance on a tilted surface from the irradiance data on the horizontal plane, there are many models available in the literature, they can be classified in isotropic and anisotropic models. This study aims to access the performance of an isotropic and three anisotropic models, which are used by PV system simulation softwares, and the impact of each of them on the estimated energy generation. The results are compared with measured energy data collected at Politec®, Araçariguama in Brazil. Results showed that positioning the module at the correct tilted angle and facing north can optimise the global irradiance incident on the module's surface. Hay & Davies model presented the lowest Mean Bias Error and Root Mean Squared Error while also showing a correlation coefficient close to 1.","PeriodicalId":158839,"journal":{"name":"2019 International Conference on Smart Energy Systems and Technologies (SEST)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130416670","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

Performance analysis of upgraded university building of FERIT Osijek microgrid achieving nearly zero energy standard based on real measurement data 基于实测数据的FERIT Osijek微电网升级后大学建筑接近零能耗标准的性能分析

2019 International Conference on Smart Energy Systems and Technologies (SEST) Pub Date : 2019-09-01 DOI: 10.1109/SEST.2019.8849138

Heidi Marguš, Matej Žnidarec, D. Šljivac, M. Stojkov

{"title":"Performance analysis of upgraded university building of FERIT Osijek microgrid achieving nearly zero energy standard based on real measurement data","authors":"Heidi Marguš, Matej Žnidarec, D. Šljivac, M. Stojkov","doi":"10.1109/SEST.2019.8849138","DOIUrl":"https://doi.org/10.1109/SEST.2019.8849138","url":null,"abstract":"Nearly zero energy buildings (nZEB) are buildings with high energy performance and nearly zero or very small amount of required energy. Energy production of an nZEB is based on only renewable energy sources (RES), on-site or nearby. Nearly zero energy standard represent the solution for better energy efficiency, conservation and saving. In this work, proposal of upgrade of the existing production system with goal of achieving the nearly zero energy standard of the Faculty of Electrical Engineering, Computer Science and Information Technology (FERIT) building in Osijek, Croatia is given. Measurement database developed in Laboratory for Renewable Energy Sources consists of measurements of meteorological data recorded at the micro-location of FERIT building, electrical output of the 10 kWp photovoltaic (PV) system and total electricity consumption of the FERIT Osijek building. Simulations for four different structures of microgrid (MG) are conducted and performance analysis based on results is obtained. Main goal of the proposed MG is to achieve nearly zero energy standard based on cost-benefit analysis of different proposed cases. In the final part of paper, comparison of results with conclusions are presented.","PeriodicalId":158839,"journal":{"name":"2019 International Conference on Smart Energy Systems and Technologies (SEST)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126762197","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

Comparison of Swarm Optimization Methods for MPPT in Partially Shaded Photovoltaic Systems 部分遮阳光伏系统最大功率点群优化方法比较

2019 International Conference on Smart Energy Systems and Technologies (SEST) Pub Date : 2019-09-01 DOI: 10.1109/SEST.2019.8849145

H. S. Moreira, João Lucas de S. Silva, Guilherme C. S. Prym, E. Y. Sakô, M. V. G. dos Reis, M. G. Villalva

引用次数: 4

Development of Control System for New Medium Voltage Power Flow Control Device 新型中压潮流控制装置控制系统的研制

2019 International Conference on Smart Energy Systems and Technologies (SEST) Pub Date : 2019-09-01 DOI: 10.1109/SEST.2019.8849115

E. Sosnina, A. Chivenkov, V. Sevastyanov, A. Shalukho, I. Lipuzhin

{"title":"Development of Control System for New Medium Voltage Power Flow Control Device","authors":"E. Sosnina, A. Chivenkov, V. Sevastyanov, A. Shalukho, I. Lipuzhin","doi":"10.1109/SEST.2019.8849115","DOIUrl":"https://doi.org/10.1109/SEST.2019.8849115","url":null,"abstract":"The power flow control device (PFCD) has been developed to control the medium voltage (MV) networks. The advantage of the proposed MV PFCD is the ability to control the power flow in the transmission line without taking into account the parameters of the line and the network operation mode. The main elements of the MV PFCD are two power converters: an active rectifier and an autonomous inverter. The principle of power regulation of the MV PFCD is a vector voltage drop regulation across the additional reactive element introduced into the power line. The article is devoted to the development and research of a vector control system of the MV PFCD. Taking into account the peculiarities of the MV PFCD functioning, the structure of the control system of MV PFCD power converters has been proposed to be a closed-loop with negative feedback loops. The MATLAB model of 0.4 kV power network with the MV PFCD has been developed to test the proposed MV PFCD control system. The external characteristics of MV PFCD converters confirm that control system is able to provide an accurate execution of control commands. The response of the MV PFCD control system during the load rejection and load rise has been investigated. It has been established that the developed control system fully implements MV PFCD declared functions.","PeriodicalId":158839,"journal":{"name":"2019 International Conference on Smart Energy Systems and Technologies (SEST)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125209430","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

Adaptive Converter for Light Rail Traction Systems 轻轨牵引系统的自适应变换器

2019 International Conference on Smart Energy Systems and Technologies (SEST) Pub Date : 2019-09-01 DOI: 10.1109/SEST.2019.8849040

Paulo Mendonça, D. Sousa

{"title":"Adaptive Converter for Light Rail Traction Systems","authors":"Paulo Mendonça, D. Sousa","doi":"10.1109/SEST.2019.8849040","DOIUrl":"https://doi.org/10.1109/SEST.2019.8849040","url":null,"abstract":"During the last couple of decades the Tram systems have been reappearing and reused in many cities all over the world. The new advent of tram lines cannot be separated from the electric mobility policies and the new technological developments. Among other features, trams that can ride on light rail infrastructures, as well as, heavy rail infrastructures have been adopted in many European cities. A core challenge when developing this type of solutions is to make compatible infrastructures running at different frequencies and voltage levels, as for instance, to develop trams able to operate at standard voltages (in line with EN50163/IEC60850), as for instance, 750 VDC in an urban area or 15 kV 162/3Hz in rail lines. Considering standard voltage levels for heavy and light rail operation, the main purpose of this paper is to describe an adaptive converter based on modular stages. This converter also includes intermediate energy storage (batteries and ultracapacitors) and is designed considering a system with 6 traction motors. To analyze the behavior and viability of the proposed converter, a simulation model of the entire system is developed based on models in line with the dynamics of such electrical systems. The results obtained show that is possible to operate a tram under different feeding conditions based on a modular solution.","PeriodicalId":158839,"journal":{"name":"2019 International Conference on Smart Energy Systems and Technologies (SEST)","volume":"4057 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127555205","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