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2018 Workshop on Communication Networks and Power Systems (WCNPS)最新文献

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Analysis of the Load Growth Direction Variation in the Dynamic Security Assessment 动态安全评估中负荷增长方向变化分析
2018 Workshop on Communication Networks and Power Systems (WCNPS) Pub Date : 2018-11-01 DOI: 10.1109/WCNPS.2018.8604462
M. E. Bento, R. Ramos
{"title":"Analysis of the Load Growth Direction Variation in the Dynamic Security Assessment","authors":"M. E. Bento, R. Ramos","doi":"10.1109/WCNPS.2018.8604462","DOIUrl":"https://doi.org/10.1109/WCNPS.2018.8604462","url":null,"abstract":"The Voltage Stability Margin (VSM) is a widely used index in the operation centers and requires a load/generation growth direction to be calculated. However, different directions can provide different VSMs and then the VSM may not be reliable. In dynamic security assessment is highly desirable to identify limit regions where the power system can operate safely and these regions can be defined based on the values of VSM. This paper presents an analysis to evaluate the impacts of load growth direction variation in the dynamic security assessment. A modeling of the system incorporating this direction variation based on areas is presented. A direct method is used to compute the stability margin of the power system for a given load direction. The analysis was performed in a reduced south-southeast Brazilian system composed of 107 buses.","PeriodicalId":148750,"journal":{"name":"2018 Workshop on Communication Networks and Power Systems (WCNPS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127417807","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
WCNPS 2018 Back Cover WCNPS 2018封底
2018 Workshop on Communication Networks and Power Systems (WCNPS) Pub Date : 2018-11-01 DOI: 10.1109/wcnps.2018.8604442
{"title":"WCNPS 2018 Back Cover","authors":"","doi":"10.1109/wcnps.2018.8604442","DOIUrl":"https://doi.org/10.1109/wcnps.2018.8604442","url":null,"abstract":"","PeriodicalId":148750,"journal":{"name":"2018 Workshop on Communication Networks and Power Systems (WCNPS)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132413558","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
An Embedded State Estimator for Reducing Data Volume and Processing in Smart Grids Monitoring 一种减少智能电网监测数据量和处理的嵌入式状态估计器
2018 Workshop on Communication Networks and Power Systems (WCNPS) Pub Date : 2018-11-01 DOI: 10.1109/WCNPS.2018.8604359
Rosvando M. Gonzaga, J. Massignan, Carlos Dias Maciel, J. London, R. M. A. de Almeida, Marcos H. M. Camillo
{"title":"An Embedded State Estimator for Reducing Data Volume and Processing in Smart Grids Monitoring","authors":"Rosvando M. Gonzaga, J. Massignan, Carlos Dias Maciel, J. London, R. M. A. de Almeida, Marcos H. M. Camillo","doi":"10.1109/WCNPS.2018.8604359","DOIUrl":"https://doi.org/10.1109/WCNPS.2018.8604359","url":null,"abstract":"This paper aims at demonstrating the advantages of performing smart grids monitoring in a decentralized way instead of the centralized strategies currently used in distribution system operation centers. Decentralized architectures based on an Embedded State Estimator (ESE) are proposed and compared to a centralized one. The comparisons were performed using the real large scale Distribution System (DS) of the city of Londrina, Paraná belonging to COPEL (a Brazilian utility). The obtained results demonstrated that using the ESE to manage information of SMs at LV networks reduces in a considerably way the amount of data transiting the communication network and the computational requirements to perform real-time monitoring of DSs.","PeriodicalId":148750,"journal":{"name":"2018 Workshop on Communication Networks and Power Systems (WCNPS)","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121131584","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
WCNPS 2018 Reviewers
2018 Workshop on Communication Networks and Power Systems (WCNPS) Pub Date : 2018-11-01 DOI: 10.1109/wcnps.2018.8604448
{"title":"WCNPS 2018 Reviewers","authors":"","doi":"10.1109/wcnps.2018.8604448","DOIUrl":"https://doi.org/10.1109/wcnps.2018.8604448","url":null,"abstract":"","PeriodicalId":148750,"journal":{"name":"2018 Workshop on Communication Networks and Power Systems (WCNPS)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124731151","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
Antenna Array based Framework for Detection and Localization of Correlated Signals 基于天线阵列的相关信号检测与定位框架
2018 Workshop on Communication Networks and Power Systems (WCNPS) Pub Date : 2018-11-01 DOI: 10.1109/WCNPS.2018.8604387
J. Maranhao, João Paulo C. L. da Costa
{"title":"Antenna Array based Framework for Detection and Localization of Correlated Signals","authors":"J. Maranhao, João Paulo C. L. da Costa","doi":"10.1109/WCNPS.2018.8604387","DOIUrl":"https://doi.org/10.1109/WCNPS.2018.8604387","url":null,"abstract":"The number of signal components received at a sensor array as well as their angle of arrival can be estimated by array signal processing techniques. However, in multipath environments, several versions of a signal transmitted from the same source are highly correlated and consequently eigenvalue-based direction of arrival (DoA) estimation approaches are no more valid. This paper proposes to extend a previous framework with multipath mitigation for detecting and locating signal emitters in two aspects: (i) by considering the case of detection and localization of multiple emitters, and (ii) by including a decorrelation technique of the multipath components emitted from the same source. Simulation results show that the proposed framework is much more efficient than the previous one, presenting lower average localization errors and average angle of arrival errors when correlated signals are present.","PeriodicalId":148750,"journal":{"name":"2018 Workshop on Communication Networks and Power Systems (WCNPS)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134293465","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
An Efficient Starting Point to Adaptive Holomorphic Embedding Power Flow Methods 自适应全纯嵌入潮流方法的有效切入点
2018 Workshop on Communication Networks and Power Systems (WCNPS) Pub Date : 2018-11-01 DOI: 10.1109/WCNPS.2018.8604381
A. C. Santos Junior, F. Freitas, L. Fernandes
{"title":"An Efficient Starting Point to Adaptive Holomorphic Embedding Power Flow Methods","authors":"A. C. Santos Junior, F. Freitas, L. Fernandes","doi":"10.1109/WCNPS.2018.8604381","DOIUrl":"https://doi.org/10.1109/WCNPS.2018.8604381","url":null,"abstract":"This paper proposes a new approach for accelerating the convergence runtime of a modified Holomorphic Embedding Load-Flow Method (HELM). In this adaptive HELM it is not used a flat start, nor an aleatory Initial Guess, but a previous starting solution provided by an iterative method based on Newton Krylov subspace. It is proposed, to improve this Adaptive HELM-based strategy, applying the use of the BiCGStab (Bi-Conjugate Gradient Stabilized) method, preconditioning, incomplete LU factorization, and reordering strategy. The goal is to optimize this previous starting solution to assist Adaptive HELM methods for getting the final solution in the fastest way. The results obtained are also compared with the traditional NR-method with flat start, an assisted NR-method, and the original HELM.","PeriodicalId":148750,"journal":{"name":"2018 Workshop on Communication Networks and Power Systems (WCNPS)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129806246","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
Performance of the Doubly-fed Induction Generator During a Voltage Sag 电压骤降时双馈感应发电机的性能
2018 Workshop on Communication Networks and Power Systems (WCNPS) Pub Date : 2018-11-01 DOI: 10.1109/WCNPS.2018.8604339
F. E. Taveiros, M. R. Marques, L. S. Barros, F. Costa
{"title":"Performance of the Doubly-fed Induction Generator During a Voltage Sag","authors":"F. E. Taveiros, M. R. Marques, L. S. Barros, F. Costa","doi":"10.1109/WCNPS.2018.8604339","DOIUrl":"https://doi.org/10.1109/WCNPS.2018.8604339","url":null,"abstract":"Due to the large increase in the installed capacity of the wind power systems, it is necessary that the wind power generation remains in operation in case of grid disturbances, since the disconnection may cause a deficit in the power generation and, thus, contribute to the destabilization of the system. For this reason, grid operators invariably require wind farms to resist to voltage sags for a specified period of time. This paper presents a theoretical and simulation analysis of the dynamic performance of the doubly-fed induction generator signals behavior in case of symmetrical or asymmetrical voltage sag in the point of common coupling and performs an analytical assessment about the back-electromotive force during normal and fault operation. It is demonstrated that voltage fluctuations and, in general, any electromagnetic disturbances can cause peaks of considerable magnitude in the generator currents and voltages, which feature heavily oscillatory behavior with grid-related frequencies. Realtime digital simulation results are presented in order to verify the generator variables, highlighting the intrinsic aspects in case of faults.","PeriodicalId":148750,"journal":{"name":"2018 Workshop on Communication Networks and Power Systems (WCNPS)","volume":"148 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123212592","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
Transient Response of the Grounding Grid of a Power Line Tower Subject to a Lightning Discharge 电力线塔接地网在雷击放电作用下的瞬态响应
2018 Workshop on Communication Networks and Power Systems (WCNPS) Pub Date : 2018-11-01 DOI: 10.1109/WCNPS.2018.8604330
A. Martins-Britto, S. Rondineau, F. Lopes
{"title":"Transient Response of the Grounding Grid of a Power Line Tower Subject to a Lightning Discharge","authors":"A. Martins-Britto, S. Rondineau, F. Lopes","doi":"10.1109/WCNPS.2018.8604330","DOIUrl":"https://doi.org/10.1109/WCNPS.2018.8604330","url":null,"abstract":"This paper discusses basic concepts of the lightning phenomena and lightning protection systems (LPS) commonly employed in power lines. It is proposed a FDTD implementation to compute the transient parameters of arbitrary geometries exposed to lightning strikes. The implementation is first validated by comparison to results reported in the literature. Afterwards, a lightning discharge on a complex system composed of power line conductors, shield wires, tower structure, grounding conductors (counterpoises), concrete foundations and steel-frames is modeled, for which the transient response is investigated.","PeriodicalId":148750,"journal":{"name":"2018 Workshop on Communication Networks and Power Systems (WCNPS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116277923","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
Real-Time Impedance Estimation in Grid-Connected Photovoltaic System Using the Discrete Fourier Transform 基于离散傅里叶变换的并网光伏系统实时阻抗估计
2018 Workshop on Communication Networks and Power Systems (WCNPS) Pub Date : 2018-11-01 DOI: 10.1109/WCNPS.2018.8604313
Sâmara de Cavalcante Paiva, Denis Keuton Alves, F. Costa, Ricardo Lúcio de Araújo Ribeiro, Thiago O. Alves Rocha
{"title":"Real-Time Impedance Estimation in Grid-Connected Photovoltaic System Using the Discrete Fourier Transform","authors":"Sâmara de Cavalcante Paiva, Denis Keuton Alves, F. Costa, Ricardo Lúcio de Araújo Ribeiro, Thiago O. Alves Rocha","doi":"10.1109/WCNPS.2018.8604313","DOIUrl":"https://doi.org/10.1109/WCNPS.2018.8604313","url":null,"abstract":"The insertion of distributed generation sources into the system, such as solar power, has been challenging the monitoring, control, and protection systems. In this context, one of the most important parameter for monitoring the power system is the grid impedance. The grid impedance estimation is helpful for control system in the grid-connected photovoltaic system, detection of the islanding conditions, and protection systems. In this paper, a discrete Fourier transform-based impedance estimation active method, available in the literature, was evaluated in an experimental platform of a three-phase photovoltaic system. The experimental tests were obtained through two actual case studies, including alteration of resistance and inductance of the grid impedance as well as by inserting linear and non-linear loads at the point of common coupling.","PeriodicalId":148750,"journal":{"name":"2018 Workshop on Communication Networks and Power Systems (WCNPS)","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121018721","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
WCNPS 2018 Preface
2018 Workshop on Communication Networks and Power Systems (WCNPS) Pub Date : 2018-11-01 DOI: 10.1109/wcnps.2018.8604375
{"title":"WCNPS 2018 Preface","authors":"","doi":"10.1109/wcnps.2018.8604375","DOIUrl":"https://doi.org/10.1109/wcnps.2018.8604375","url":null,"abstract":"","PeriodicalId":148750,"journal":{"name":"2018 Workshop on Communication Networks and Power Systems (WCNPS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133034797","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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