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2017 Workshop on Communication Networks and Power Systems (WCNPS)最新文献

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Shift parameter sensitivity on the computation of unstable reduced order model via truncated balanced method 截断平衡法计算不稳定降阶模型时偏移参数的灵敏度
2017 Workshop on Communication Networks and Power Systems (WCNPS) Pub Date : 2017-11-01 DOI: 10.1109/WCNPS.2017.8252941
Y. G. I. Acle, F. Freitas
{"title":"Shift parameter sensitivity on the computation of unstable reduced order model via truncated balanced method","authors":"Y. G. I. Acle, F. Freitas","doi":"10.1109/WCNPS.2017.8252941","DOIUrl":"https://doi.org/10.1109/WCNPS.2017.8252941","url":null,"abstract":"This paper presents reduced order models (ROMs) of unstable systems. The effect of a shift parameter is studied to stabilize the system and then apply the truncated balanced realization (TBR) approach to compute the reduced ROM. The extended Krylov subspace (EKS) technique is applied in order to obtain the ROM. To evaluate the performance of the methodology, experiments in a 606-state system model were assessed. The study demonstrated that the conditioning of the state matrix through a shifting of the eigenvalues works on properly for determination of unstable system ROM.","PeriodicalId":293027,"journal":{"name":"2017 Workshop on Communication Networks and Power Systems (WCNPS)","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114772751","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
Parametric sensitivity analysis of power transformer differential protection 电力变压器差动保护的参数灵敏度分析
2017 Workshop on Communication Networks and Power Systems (WCNPS) Pub Date : 2017-11-01 DOI: 10.1109/WCNPS.2017.8252932
L. Peres, K. Silva
{"title":"Parametric sensitivity analysis of power transformer differential protection","authors":"L. Peres, K. Silva","doi":"10.1109/WCNPS.2017.8252932","DOIUrl":"https://doi.org/10.1109/WCNPS.2017.8252932","url":null,"abstract":"In this paper, a numerical algorithm which implements phase (87T), negative-sequence (87Q) and restricted earth fault (REF) differential protection functions is developed. The performance evaluation of power transformer protection functions was done through parametric sensitivity analysis (PSAs). The results show the performance of implemented protection functions facing to a wide variety of operating situations to which transformer is subjected (loading condition, source strength and energization condition).","PeriodicalId":293027,"journal":{"name":"2017 Workshop on Communication Networks and Power Systems (WCNPS)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114948582","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
A root-CMA algorithm for multi-user separation 多用户分离的根- cma算法
2017 Workshop on Communication Networks and Power Systems (WCNPS) Pub Date : 2017-11-01 DOI: 10.1109/WCNPS.2017.8252936
Stanislaw Gorlow, J. P. J. D. Da Costa, M. Haardt
{"title":"A root-CMA algorithm for multi-user separation","authors":"Stanislaw Gorlow, J. P. J. D. Da Costa, M. Haardt","doi":"10.1109/WCNPS.2017.8252936","DOIUrl":"https://doi.org/10.1109/WCNPS.2017.8252936","url":null,"abstract":"Constant modulus algorithms often offer candidate solutions for problems related to wireless communication systems that use antenna arrays and also for MIMO radar. The classical constant modulus adaptive array, however, fails at locking onto a single mode, and instead, it equalizes the full band spectrum. In this paper, we develop a novel approach for the separation of multiple users in a frequency-reuse radio system making use of the original constant modulus adaptive (CMA) algorithm. Based on the observation that the differential filter weights resemble a superposition of the array steering vectors, we cast the original task to a direction-of-arrival estimation problem. With rigorous theoretical analysis of the array response based on the discrete- space Fourier transform we elaborate a solution that solves the problem by finding the roots of a polynomial equation. We give an illustrative numerical example to demonstrate the validity of the approach under high SNR conditions.","PeriodicalId":293027,"journal":{"name":"2017 Workshop on Communication Networks and Power Systems (WCNPS)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127179612","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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