2011 International Conference on Power and Energy Systems最新文献_第5页

Effects of Thyristor Controlled Series Capacitor (TCSC) on oscillations in tie-line power and area frequencies in an interconnected non-reheat thermal power system 晶闸管控制串联电容器(TCSC)对互联非再热火电系统中联络线功率和区域频率振荡的影响

2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156663

Nikhil Abraham, Arun P. Parameswaran, R. J. Abraham

引用次数: 2

Indirect voltage control in distribution system using cascade multilevel inverter based STATCOM 基于STATCOM的串级多电平逆变器在配电系统中的间接电压控制

2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156672

J. Kumar, B. Das, P. Agarwal

引用次数: 5

Correlation and comparison between bus participation factor and voltage sensitivity factor for simultaneous and individual bus load change in multi bus power system 多母线电力系统中母线参与系数与电压敏感系数的关联与比较

2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156664

S. D. Naik, M. Khedkar, S. Bhat

{"title":"Correlation and comparison between bus participation factor and voltage sensitivity factor for simultaneous and individual bus load change in multi bus power system","authors":"S. D. Naik, M. Khedkar, S. Bhat","doi":"10.1109/ICPES.2011.6156664","DOIUrl":"https://doi.org/10.1109/ICPES.2011.6156664","url":null,"abstract":"In heavily loaded systems, voltage stability limit is usually dominant and voltage instability is usually observed following large disturbance. This is typically the case in the deregulated environment as the transmission systems are operating under more stressed condition due to increased transaction level associated with open access. Sufficient attention to voltage stability in deregulated system is not paid as compared to angle stability. More attention is required to be paid to keep voltage profile and hold the voltage stability under control. There are various methods for voltage stability analysis in the literature. In this paper simple voltage stability analysis is carried out for a multi bus power system (IEEE 14 Bus System) using V-Q Sensitivity analysis and modal analysis. A software code is specially written which allows increasing the load on the selected buses simultaneously as well as individually. The changes in V-Q sensitivity and bus participation is studied with simultaneous load increase on the group of buses compared with individual bus load increase. Also the correlation between the voltage sensitivity factor and bus participation factor is established.","PeriodicalId":158903,"journal":{"name":"2011 International Conference on Power and Energy Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128902936","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

Identification of power quality disturbances using Artificial Neural Networks 用人工神经网络识别电能质量扰动

2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156676

M. K. Elango, A. Nirmal Kumar, K. Duraiswamy

{"title":"Identification of power quality disturbances using Artificial Neural Networks","authors":"M. K. Elango, A. Nirmal Kumar, K. Duraiswamy","doi":"10.1109/ICPES.2011.6156676","DOIUrl":"https://doi.org/10.1109/ICPES.2011.6156676","url":null,"abstract":"This work presents the investigations carried out on application of Hilbert Huang transform (HHT), back propagation algorithm (BPA), radial basis function(RBF) and locally weighted projection regression (LWPR) for power quality disturbance identification. Features are extracted from the electrical signals by using HHT. HHT method is a combination of empirical mode decomposition (EMD) and Hilbert transform (HT). The output of HT are instantaneous frequency (IF) and instantaneous amplitude (IA). The features obtained from the HHT are unique to each type of electrical fault. These features are normalized and given to the RBF, BPA and LWPR. The data required are collected from textile mills using three phase power quality analyzer at various time durations and places. The performance of the proposed method is compared with the existing feature extraction technique namely Hilbert Transform with Radial Basis Function (HTRBF). The accuracy of results are presented by calculation of percentage error for identification of power quality disturbances, training time duration and testing time duration of algorithms and they are compared with existing algorithm. Simulation results show the effectiveness of the proposed method for power quality disturbance identification.","PeriodicalId":158903,"journal":{"name":"2011 International Conference on Power and Energy Systems","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126047374","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

Coherence function method of detection of fault in a power transformer during impulse test 电力变压器冲击试验中故障的相干函数检测方法

2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156635

K. Reddy, M. Kumar, B. Singh, M. Suryakalavathi

引用次数: 6

Analysis of PI and PR controllers for distributed power generation system under unbalanced grid faults 电网不平衡故障下分布式发电系统PI和PR控制器分析

2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156688

Ashish Ranjan Dash, B. Babu, K. Mohanty, R. Dubey

引用次数: 30

Shaft input adaptive source current compensation based novel voltage and frequency control of autonomous induction generator 基于轴输入自适应源电流补偿的自主感应发电机新型压频控制

2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156626

J. K. Chatterjee, P. Chauhan, P. E. B. Murty, Santi M. Mandal

{"title":"Shaft input adaptive source current compensation based novel voltage and frequency control of autonomous induction generator","authors":"J. K. Chatterjee, P. Chauhan, P. E. B. Murty, Santi M. Mandal","doi":"10.1109/ICPES.2011.6156626","DOIUrl":"https://doi.org/10.1109/ICPES.2011.6156626","url":null,"abstract":"In this paper a novel scheme for regulation of amplitude and frequency of an autonomous self-excited induction generator (SEIG) terminal voltage under perturbations in shaft speed and connected load has been presented, which does not require voltage and frequency feedback. In this technique, compensation of active and reactive component of SEIG stator phase current using a generalized impedance controller (GIC) provides the regulation of SEIG output. The stator current compensation is different from standard hysteresis current compensation technique. The GIC is a voltage controlled PWM voltage source converter, offering controlled bidirectional flow of active and reactive power, while connected at the PCC via coupling reactance. For wide range of shaft input to the given generator, the relationship between the shaft input and reference amplitude of active and reactive component of SEIG stator phase current, at rated PCC voltage and frequency, is pre-established for proper GIC based compensation. A mathematical model of SEIG-GIC-load integrated system has been developed and simulated in MATLAB/Simulink to demonstrate capability of the generating system to provide voltage and frequency regulated supply, under variety of source and load perturbations.","PeriodicalId":158903,"journal":{"name":"2011 International Conference on Power and Energy Systems","volume":"457 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124260227","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

Identification of short duration power quality disturbances employing S-transform 利用s变换识别短时电能质量扰动

2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156671

C. Naik, P. Kundu

{"title":"Identification of short duration power quality disturbances employing S-transform","authors":"C. Naik, P. Kundu","doi":"10.1109/ICPES.2011.6156671","DOIUrl":"https://doi.org/10.1109/ICPES.2011.6156671","url":null,"abstract":"Digital signal processing techniques based power quality analysis has attracted the attention of number of researchers. There are different time frequency techniques like short time Fourier transform (STFT), Continuous Wavelet transform (CWT) and S-transform used for the analysis of power quality disturbances. S-transform is a modified version of CWT with a phase correction. It offers a distinct advantage over the time frequency analysis techniques like CWT and STFT, by giving phase correction and better frequency localization in noisy environment too. In this paper, the identification and classification capabilities of S-transform based analysis is discussed. Short duration disturbances like voltage sag, voltage swell, momentary interruption, harmonics, capacitive switching transient, impulsive transient, transformer energizing are simulated using MATLAB and analyzed using S-transform. A combination of voltage swell, harmonics and capacitive switching events occurring simultaneously is also simulated and analyzed. A parameter based on the average of S magnitudes is calculated and its variations with respect to time for different power quality disturbances are analyzed for identification.","PeriodicalId":158903,"journal":{"name":"2011 International Conference on Power and Energy Systems","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116332309","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

Development of a power system laboratory supported by real-time systems 实时系统支持下电力系统实验室的开发

2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156686

D. Surendra, K. Shubhanga

{"title":"Development of a power system laboratory supported by real-time systems","authors":"D. Surendra, K. Shubhanga","doi":"10.1109/ICPES.2011.6156686","DOIUrl":"https://doi.org/10.1109/ICPES.2011.6156686","url":null,"abstract":"In this paper, features of a power system laboratory supported by real-time systems are outlined. These real-time systems are built using an open-source RTAI-Linux which not only offers a general purpose operating system features, but also has the hard real-time capabilities. On such a platform a transient waveform recorder is developed to capture the transient behaviour of a synchronous machine under various operating conditions such as voltage buildup and sudden 3-phase symmetrical short-circuit. Using the recorded transient waveforms, a synchronous machine model development task is carried out as per the IEEE Std. 115–2009 specified procedures. Employing such a model a time-domain simulation programme is run to tune the model parameters of the machine by comparing the simulation results against the recorded waveforms. It is also found that the transient waveform recorder provides a useful tool to visualize the synchronization and loss-of-synchronism transients either with the mains supply or with another machine. As an additional application, an open-loop excitation controller for a synchronous machine is developed which involved the realization of many hardware circuits such as inverse-cosine firing-circuit module, single-phase thyristor bridge-rectifier circuits and a DAC interfacing card. Such a laboratory is found to augment the classroom teaching of a power system dynamics course.","PeriodicalId":158903,"journal":{"name":"2011 International Conference on Power and Energy Systems","volume":"185 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122569567","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: 12

Computation of electric field of 100kV FGM spacer for gas insulated bus duct applications 气体绝缘母线管道用100kV FGM隔层电场计算

2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156642

M. Naik, J. Amarnath, S. Kamakshiah, A. Varaprasadarao

引用次数: 2