2019 International Conference on Smart Energy Systems and Technologies (SEST)最新文献_第2页

Advanced Autonomous Voltage-Control Method using Sensor Data in a Distribution Power System 配电系统中基于传感器数据的先进自主电压控制方法

2019 International Conference on Smart Energy Systems and Technologies (SEST) Pub Date : 2019-09-01 DOI: 10.1109/SEST.2019.8849001

Naoyuki Takahashi

{"title":"Advanced Autonomous Voltage-Control Method using Sensor Data in a Distribution Power System","authors":"Naoyuki Takahashi","doi":"10.1109/SEST.2019.8849001","DOIUrl":"https://doi.org/10.1109/SEST.2019.8849001","url":null,"abstract":"PVs have been rapidly incorporated within power distribution systems after the operation of Feed In Tariff (FIT). Step Voltage Regulator (SVR) with Line Drop Compensator method has been installed to the power distribution system to control rising voltages due to the reverse flow from PVs. LDC controls the distribution voltage based on the estimated voltage obtained via sensor measurements in real-time. However, using LDC, it is difficult to maintain the distribution voltage within a specified range because the estimation error expands with increasing PV installed capacity. In Japan, a type of automatic switch with voltage and current sensors (IT-switch) has been installed to detect an accident point in the power distribution system. IT-switching can monitor line voltage and current in each phase, and measured data are transferred to data servers. This paper proposes an advanced, autonomous voltage-control method to improve the estimation accuracy and voltage control performance of SVR, using the reference database to address the voltage deviation problem. The proposed method estimates a voltage width of the control target voltage in real-time as a reference voltage by using the measured (online) data and database (offline) data. To determine the validity of the proposed method, we conducted numerical simulations and compared the voltage control performance and the influence of SVR life span using a model power distribution system. The results indicates that the proposed method improved the voltage control performance and SVR life span by improving the estimation accuracy through the integration of real-time measured data and the reference database.","PeriodicalId":158839,"journal":{"name":"2019 International Conference on Smart Energy Systems and Technologies (SEST)","volume":"7 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":"126939565","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

Development of a Proposed Single-Phase Series Active Power Filter without External Power Sources 无外部电源的单相串联有源电力滤波器的研制

2019 International Conference on Smart Energy Systems and Technologies (SEST) Pub Date : 2019-09-01 DOI: 10.1109/SEST.2019.8849010

João L. Torre, Luis A. M. Barros, J. Afonso, J. G. Pinto

{"title":"Development of a Proposed Single-Phase Series Active Power Filter without External Power Sources","authors":"João L. Torre, Luis A. M. Barros, J. Afonso, J. G. Pinto","doi":"10.1109/SEST.2019.8849010","DOIUrl":"https://doi.org/10.1109/SEST.2019.8849010","url":null,"abstract":"The quality of electric power is receiving more and more attention from part of consumers, Distribution System Operators (DSO), Transmission System Operators (TSO) and other competent entities related to the electrical power system. Once the electrical Power Quality (PQ) problems have direct implications for business productivity, causing high economic losses, it is mandatory to develop solutions that mitigate these problems. Active Power Filters (APFs) are power electronic equipment capable of compensating PQ problems that have the ability to dynamically adjust their modes of operation in response to changes in load or in the power system. Among these solutions, the Series Active Power Filter (SeAPF) is specially conceived to deal with problems related to the power system voltage amplitude and waveform. Despite the ability to compensate voltage sags, voltage swells, voltage harmonics, and voltage imbalances in three-phase systems, the SeAPF has not achieved much success neither has not been widely adopted. The lack of interest in this equipment can be largely justified by its high cost and also because of some limitations presented by the SeAPF conventional topology. In this paper is presented a novel topology, as well as the control algorithms of a single-phase SeAPF that is connected directly to the power grid without the use of coupling transformers and that does not require the use of external power sources. The topology and control algorithms of the SeAPF proposed in this paper were firstly evaluated by means of simulation results obtained with PSIM software and, once validated, a laboratory prototype was developed, being presented experimental results that support the correct operation of the proposed system.","PeriodicalId":158839,"journal":{"name":"2019 International Conference on Smart Energy Systems and Technologies (SEST)","volume":"82 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":"116044761","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: 9

LoRa Communication as a Solution for Real-Time Monitoring of IoT Devices at UNICAMP LoRa通信作为UNICAMP物联网设备实时监控的解决方案

2019 International Conference on Smart Energy Systems and Technologies (SEST) Pub Date : 2019-09-01 DOI: 10.1109/SEST.2019.8849100

Luis F. Ugarte, Maique C. Garcia, Enrico O. Rocheti, Eduardo Lacusta, Leandro Pereira, M. D. de Almeida

{"title":"LoRa Communication as a Solution for Real-Time Monitoring of IoT Devices at UNICAMP","authors":"Luis F. Ugarte, Maique C. Garcia, Enrico O. Rocheti, Eduardo Lacusta, Leandro Pereira, M. D. de Almeida","doi":"10.1109/SEST.2019.8849100","DOIUrl":"https://doi.org/10.1109/SEST.2019.8849100","url":null,"abstract":"The advent of the Internet of Things (IoT) has been speeding up the development of information technologies, especially, in traditional knowledge areas. However, one of the main challenges of the IoT is the real-time communication, especially in long-range scenarios. A continuous communication guarantees the precision and reliability of the sampled data, and in turn, the analyses made from them. As IoT applications require different communication patterns, in this paper, the Long-Range (LoRa) communication is assessed as a solution for real-time monitoring of IoT devices at State University of Campinas (UNICAMP). LoRa can provide low power, long range, and high reliability. Datasheets indicate that LoRa can present a range of 15 km, but without specifying the environmental conditions, devices parameters, bandwidth, spreading factor, coding rate, transmission frequency and so on. In this work, several tests were performed in the UNICAMP campus considering different distances, modulation settings, and data packet sizes. Results highlight how LoRa communication enables the use of IoT devices within the campus with real-time communications, guaranteeing proper reliability.","PeriodicalId":158839,"journal":{"name":"2019 International Conference on Smart Energy Systems and Technologies (SEST)","volume":"326 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":"114378057","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: 13

Maximum Loadability of Meshed Networks: A Sequential Convex Optimization Approach 网格网络的最大可加载性:一种顺序凸优化方法

2019 International Conference on Smart Energy Systems and Technologies (SEST) Pub Date : 2019-09-01 DOI: 10.1109/SEST.2019.8848997

Danman Wu, Libin Yang, Wei Wei, Laijun Chen, M. Lotfi, J. Catalão

{"title":"Maximum Loadability of Meshed Networks: A Sequential Convex Optimization Approach","authors":"Danman Wu, Libin Yang, Wei Wei, Laijun Chen, M. Lotfi, J. Catalão","doi":"10.1109/SEST.2019.8848997","DOIUrl":"https://doi.org/10.1109/SEST.2019.8848997","url":null,"abstract":"In power system static security analysis, it often requires to calculate continuous power flow from a certain load condition to a bifurcation point along a given direction, which is referred to as the maximum loadability problem. This paper proposes a convex optimization method for maximum loadability problem over meshed power grids based on the semidefinite relaxation approach. Because the objective is to maximize the load increasing distance, convex relaxation model is generally inexact, unlike the situation in cost-minimum optimal power flow problem. Inspired by the rank penalty method, this paper proposes an iterative procedure to retrieve the maximum loadability. The convex quadratic term representing the penalty on the rank of matrix variable is updated in each iteration based on the latest solution. In order to expedite convergence, generator reactive power is also included in the objective function, which has been reported in literature. Numeric tests on some small-scale systems validate its effectiveness. Any sparsity-exploration and acceleration techniques for semidefinite programming can improve the efficiency of the proposed approach.","PeriodicalId":158839,"journal":{"name":"2019 International Conference on Smart Energy Systems and Technologies (SEST)","volume":"7 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":"122195164","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

Embedded Edge Computing for Real-time Smart Meter Data Analytics 嵌入式边缘计算用于实时智能电表数据分析

2019 International Conference on Smart Energy Systems and Technologies (SEST) Pub Date : 2019-09-01 DOI: 10.1109/SEST.2019.8849012

T. Sirojan, S. Lu, B. Phung, E. Ambikairajah

{"title":"Embedded Edge Computing for Real-time Smart Meter Data Analytics","authors":"T. Sirojan, S. Lu, B. Phung, E. Ambikairajah","doi":"10.1109/SEST.2019.8849012","DOIUrl":"https://doi.org/10.1109/SEST.2019.8849012","url":null,"abstract":"As part of smart grid upgrades, traditional electricity meters are being replaced with smart meters that can improve accuracy, efficiency, and visibility in electrical energy consumption patterns and measurements. However, in most of the deployments, smart meters are only used to digitally measure the energy usage of consumer premises and transmit those data to the utility providers. Despite this, smart meter data can be leveraged into numerous potential applications such as demand side management and energy savings via consumer load identification and abnormality detection. Anyhow, these features are not enabled in most deployments due to high sampling rate requirements, lack of affordable communication bandwidth and resource constraints in analyzing a huge amount of data. This paper demonstrates the suitability of the embedded edge computing paradigm which not only enriches the functionalities but also overcome the limitations of smart meters. It achieves significant improvements in accuracy, latency and bandwidth requirement on smart grid applications via pushing the data analytics into the smart meters. Furthermore, this paper exposes the impact of sampling frequency and digitization resolution in the smart meter data analytics. The experiments are conducted using National Instruments (NI) embedded hardware and the results are reported.","PeriodicalId":158839,"journal":{"name":"2019 International Conference on Smart Energy Systems and Technologies (SEST)","volume":"1 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":"129683678","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: 31

Impedance modelling for European style Distribution Feeder 欧式配电馈线的阻抗建模

2019 International Conference on Smart Energy Systems and Technologies (SEST) Pub Date : 2019-09-01 DOI: 10.1109/SEST.2019.8849015

Arpan Koirala, R. D’hulst, D. Van Hertem

引用次数: 11

Economic Viability of Smart Charging EVs in the Dutch Ancillary Service Markets 智能充电电动汽车在荷兰辅助服务市场的经济可行性

2019 International Conference on Smart Energy Systems and Technologies (SEST) Pub Date : 2019-09-01 DOI: 10.1109/SEST.2019.8849122

S. Doumen, N. Paterakis

引用次数: 5

Prediction of Power Outages in Distribution Network with Grey Theory 基于灰色理论的配电网停电预测

2019 International Conference on Smart Energy Systems and Technologies (SEST) Pub Date : 2019-09-01 DOI: 10.1109/SEST.2019.8849044

Yang Zhang, A. Mazza, P. Colella, E. Bompard, E. Roggero, G. Galofaro

引用次数: 2

Energy Consumption by Cloud-based Vehicle Functions 基于云计算的车辆功能能耗

2019 International Conference on Smart Energy Systems and Technologies (SEST) Pub Date : 2019-09-01 DOI: 10.1109/SEST.2019.8849133

F. Milani, Lena Gollowitz, M. Foell, C. Beidl

引用次数: 1

Adaptive Protection of Distribution Systems with DERs Considering Consumer and Generation Profiles 考虑用户和发电剖面的分布式配电系统自适应保护

2019 International Conference on Smart Energy Systems and Technologies (SEST) Pub Date : 2019-09-01 DOI: 10.1109/SEST.2019.8849144

C. Wahyudi, N. Hariyanto, R. Ganjavi

{"title":"Adaptive Protection of Distribution Systems with DERs Considering Consumer and Generation Profiles","authors":"C. Wahyudi, N. Hariyanto, R. Ganjavi","doi":"10.1109/SEST.2019.8849144","DOIUrl":"https://doi.org/10.1109/SEST.2019.8849144","url":null,"abstract":"Distributed Energy Resources (DER) penetration has a significant impact on the distribution protection system. Current flow during short-circuit and load flow depend on DERs' operating state, generated power, and short-circuits contribution as well as consumer loads. The more DER integration leads to more challenge to maintaining DER, feeder, and substation protections sensitive, selective, with fast response, and optimum reliability. The IEEE 34 Node Test Feeder used and extended by addition of photovoltaic, wind, and energy storage DERs. Consumer loads and DER's generation were extended from static values to typical load and generation profiles, which examined daily, weekly, and seasonal patterns. Protection device settings were calculated selectively in the absence of DERs. Using the method of Protection Security Assessment (PSA), automatically evaluate the correct operation of protection devices in case of different fault scenarios. Three-phase and single-phase metallic faults are applied to validate protection system security. The PSA reassessed DER contribution and influence on protection selectivity. Adaptive rules should fix identified miss-coordinations by modifying protection settings or feeder automation logic. This paper applied adaptive rules to improve protection settings. The PSA method and adaptive rules assumed for implementation in an Advanced Distribution Management System (ADMS).","PeriodicalId":158839,"journal":{"name":"2019 International Conference on Smart Energy Systems and Technologies (SEST)","volume":"63 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":"131231553","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: 6