2009 International Conference on Power Systems最新文献_第5页

OPF based voltage stability assessment of a multi-bus power system using network equivalencing technique 基于OPF的多母线电力系统电压稳定性评估的网络等效技术

2009 International Conference on Power Systems Pub Date : 2009-12-01 DOI: 10.1109/ICPWS.2009.5442742

P. Nagendra, S. Dey, S. Paul

引用次数: 8

Computation of critical clearing time using an integrated approach 用综合方法计算临界清算时间

2009 International Conference on Power Systems Pub Date : 2009-12-01 DOI: 10.1109/ICPWS.2009.5442676

B. K. Saharoy, A. Pradhan, A. Sinha

引用次数: 4

A new control strategy for load compensation in power distribution system 一种新的配电系统负荷补偿控制策略

2009 International Conference on Power Systems Pub Date : 2009-12-01 DOI: 10.1109/ICPWS.2009.5442712

U. Koteswara Rao, M. Mishra

引用次数: 2

Neural Network Principal Component Analysis based power transformer differential protection 基于神经网络主成分分析的电力变压器差动保护

2009 International Conference on Power Systems Pub Date : 2009-12-01 DOI: 10.1109/ICPWS.2009.5442748

M. Tripathy

{"title":"Neural Network Principal Component Analysis based power transformer differential protection","authors":"M. Tripathy","doi":"10.1109/ICPWS.2009.5442748","DOIUrl":"https://doi.org/10.1109/ICPWS.2009.5442748","url":null,"abstract":"This paper describes a new approach for power transformer protection that ensures the security for external faults, magnetizing inrush and over-excitation conditions and provides dependability for internal faults. This approach based on the wave-shape recognition technique. An algorithm based on Neural Network Principal Component Analysis (NNPCA) with back propagation learning is proposed for digital differential protection of power transformer. The principal component analysis is used to preprocess the data from power system in order to eliminate redundant information and enhance hidden pattern of differential current to discriminate between internal faults from inrush and over-excitation conditions. This algorithm has been developed by considering optimal number of neurons in hidden layer and optimal number of neurons at output layer. The effect of hidden layer neurons on the classification accuracy is analyzed. The proposed algorithm makes use of ratio of voltage-to-frequency and amplitude of differential current for transformer operating condition detection. The algorithm is evaluated using simulation performed with PSCAD/EMTDC and MATLAB.","PeriodicalId":337759,"journal":{"name":"2009 International Conference on Power Systems","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129460438","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

Three single-phase voltage source converter based three-phase four wire DSTATCOM 基于三相四线DSTATCOM的三单相电压源变换器

2009 International Conference on Power Systems Pub Date : 2009-12-01 DOI: 10.1109/ICPWS.2009.5442701

Bhim Singh, P. Jayaprakash, D. Kothari

引用次数: 16

A study on ferroresonance with a varying initial conditions using a nonlinear model of transformer 用变压器非线性模型研究变初始条件下的铁磁共振

2009 International Conference on Power Systems Pub Date : 2009-12-01 DOI: 10.1109/ICPWS.2009.5442728

M. Roy, C. K. Roy

引用次数: 11

Performance analysis of converter based variable speed wind energy conversion system 基于变流器的变速风能转换系统性能分析

2009 International Conference on Power Systems Pub Date : 2009-12-01 DOI: 10.1109/ICPWS.2009.5442753

A. Sinha, P. Samuel, Devesh Kumar, Rajesh Gupta

{"title":"Performance analysis of converter based variable speed wind energy conversion system","authors":"A. Sinha, P. Samuel, Devesh Kumar, Rajesh Gupta","doi":"10.1109/ICPWS.2009.5442753","DOIUrl":"https://doi.org/10.1109/ICPWS.2009.5442753","url":null,"abstract":"In this paper performance study of converter based wind energy conversion system (WECS) has been obtained. The generator used in WECS for this study is a Permanent Magnet Alternator (PMA) coupled to a wind turbine. It is assumed that the wind speed varies widely at the chosen site of WECS. The wide fluctuation of the wind speed produces variable dc voltage across the ac/dc converter stage. A dc-dc buck converter stage has been proposed to be used in such a situation to robustly hold the output dc voltage to the desired constant value needed for the dc link of the PWM inverter. It is shown through the small-signal modeling of the buck converter that the system has sufficient stability margins to control the output voltage and provide insensitivity against variations in the input voltage due to wind speed variations. Both dc output voltage of the buck converter and ac output voltage of the inverter are controlled through a common control strategy. The proposed wind energy scheme has been simulated and analyzed in the MATLAB/SIMULINK platform for different wind speed variations. The experimental verification of the performance of the buck converter to be used for the WECS has been obtained on the laboratory model using a dc motor-synchronous generator set.","PeriodicalId":337759,"journal":{"name":"2009 International Conference on Power Systems","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122491342","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

Partial discharge measurement of transformer with ICT facilities 带ICT设备变压器局部放电测量

2009 International Conference on Power Systems Pub Date : 2009-12-01 DOI: 10.1109/ICPWS.2009.5442682

S. Karmakar, N. K. Roy, P. Kumbhakar

{"title":"Partial discharge measurement of transformer with ICT facilities","authors":"S. Karmakar, N. K. Roy, P. Kumbhakar","doi":"10.1109/ICPWS.2009.5442682","DOIUrl":"https://doi.org/10.1109/ICPWS.2009.5442682","url":null,"abstract":"Recent development in Information and Communication Technology (ICT) has drawn attention of scientists and engineers to develop ICT enabled laboratories. In this context development of an ICT enabled high voltage laboratory with facilities of remote operation is required because of its demand in the Engineering education as well as the assessment of insulation for continuous monitoring of the health of power equipment. The insulation of the power equipment is degraded due to the cumulative effect of the electrical, thermal, chemical and mechanical stress caused by the partial discharges (PD). Partial discharge detection and measurement constitute an important tool for quality assessment of insulation systems in high voltage (HV) power equipment. This paper reports on the development of ICT enabled remotely operated high voltage laboratory (ICTRHVL) for on-line measurement of partial discharges (PDs) of a model transformer. The remotely operated high voltage laboratory includes the partial discharge assessment facilities with ICT enabled technology will help the users to perform partial discharge tests and assessment on-line, in real time on real equipments, by sitting at their own place by local area network (LAN) as well as through the internet.","PeriodicalId":337759,"journal":{"name":"2009 International Conference on Power Systems","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126733352","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: 20

Robust extended complex Kalman Filter applied to distorted power system signals for frequency estimation 鲁棒扩展复卡尔曼滤波器用于电力系统失真信号的频率估计

2009 International Conference on Power Systems Pub Date : 2009-12-01 DOI: 10.1109/ICPWS.2009.5442752

R. Panigrahi, S. Rauta, P. C. Panda

引用次数: 5

Breakdown voltage modeling of Manila Paper in the presence of cavities under AC and DC conditions by Adaptive Fuzzy Logic Technique 基于自适应模糊逻辑技术的马尼拉纸在交直流条件下存在空腔的击穿电压建模

2009 International Conference on Power Systems Pub Date : 2009-12-01 DOI: 10.1109/ICPWS.2009.5442738

S. Mohanty, Saradindu Ghosh

引用次数: 5