2011 International Conference on Power and Energy Systems最新文献_第7页

On comparing the performance of Genetic Algorithm optimized PI and fractional order PI controller for power quality enhancement 比较遗传算法优化PI控制器与分数阶PI控制器在提高电能质量方面的性能

2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156674

S. Srivastava, Astha Manaktala, Kamayani Sadhwani, M. Gupta

引用次数: 4

Effects of harmonics in distribution systems on temperature rise and life of XLPE power cables 配电系统谐波对交联聚乙烯电缆温升和寿命的影响

2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156680

K. Patil, W. Gandhare

{"title":"Effects of harmonics in distribution systems on temperature rise and life of XLPE power cables","authors":"K. Patil, W. Gandhare","doi":"10.1109/ICPES.2011.6156680","DOIUrl":"https://doi.org/10.1109/ICPES.2011.6156680","url":null,"abstract":"In the recent years due to the increased use of nonlinear loads, harmonic pollution level in distribution systems has been increased beyond the tolerable limits. This has caused many problems for distribution system components, such as additional losses and hence additional heating. Also, now, due to number of technical, environmental and social issues, the use of power cables; especially cross linked polyethylene (XLPE) power cables, is increasing at very rapid rate. Thus, power system harmonics problem and the use of XLPE power cables in distribution systems are growing simultaneously. Harmonics present in the distribution systems causes additional temperature rise and hence loss of useful life of XLPE power cables. The aim of this paper is to evaluate the effects of harmonics in distribution systems on the temperature rise and useful life of XLPE power cables. A mathematical model of XLPE power cable is developed for evaluation of effects of harmonics on temperature rise and Arrhenius equation is used to evaluate the effects of harmonics on useful life of XLPE power cables. MATLAB program is developed to implement mathematical model and to solve Arrhenius equation for real life XLPE power cables having aluminium and copper conductors. The results are presented and conclusions are drawn.","PeriodicalId":158903,"journal":{"name":"2011 International Conference on Power and Energy Systems","volume":"31 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":"116919821","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: 25

An intelligent control of solid oxide fuel cell voltage 一种智能控制固体氧化物燃料电池电压的方法

2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156613

K. C. Bhuyan, K. Mahapatra

引用次数: 9

Small signal stability analysis of grid connected Photo Voltaic distributed generator system 并网光伏分布式发电系统的小信号稳定性分析

2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156620

S. Ravichandran, S. Dasan, R. Devi

{"title":"Small signal stability analysis of grid connected Photo Voltaic distributed generator system","authors":"S. Ravichandran, S. Dasan, R. Devi","doi":"10.1109/ICPES.2011.6156620","DOIUrl":"https://doi.org/10.1109/ICPES.2011.6156620","url":null,"abstract":"Distributed Generation is a small source of electric power conversion from non-conventional energy sources such as Photo Voltaic system (PV), wind, Fuel cell etc. Small signal stability analysis is very much essential to study the inter-area and intra area oscillations which normally exist in a power system. But, it leads to unstable operation when small disturbances are applied. Normally, mechanical part of a synchronous system is intrinsically prone to weakly damped oscillations and the damping of these oscillations must come from other sources, such as damper windings and the machine's controllers. Because power system oscillations have frequencies in the order of a few Hz and of rather small amplitude, hardly any damping is provided by the damper windings, leaving the controllers and the rest of the power system as the main contributors to the damping of the rotor speed oscillations. So in this paper, Power system stabilizer (PSS) is used for providing damping torque. This paper examines the effect of PV sources on small signal stability conditions of conventional power system with Synchronous Generators (SG) along with PSS. Eigen value analysis is conducted after developing a Differential-Algebraic model (DAE) in power balance form and tested on a modified 3 synchronous machine − 9 bus system [10] with PV converters.","PeriodicalId":158903,"journal":{"name":"2011 International Conference on Power and Energy Systems","volume":"3 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":"116491058","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: 7

Performance improvement of power systems using Hybrid Power Flow Controller 混合潮流控制器对电力系统性能的改善

2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156628

Noel Richard Merritt, D. Chatterjee

引用次数: 15

GPS synchronized current differential protection of mutually coupled line 互耦线路GPS同步电流差动保护

2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156629

Snehal Unde, S. Dambhare

引用次数: 6

Apparent impedance seen at generator terminal for faults on HV side of Delta-Star generator transformer Delta-Star发电机变压器高压侧故障时发电机终端的视阻抗

2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156632

A. Sai, Sachin Srivastava, S. Ganesan, Suresh Maturu

引用次数: 0

Transmission cost allocation with and with out losses in restructured power system 电力系统改制后有无损耗的输电成本分配

2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156606

P. S. Varma, V. Sankar

引用次数: 3

Use of support vector machine for wind speed prediction 使用支持向量机进行风速预测

2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156611

Patil SangitaB, S. Deshmukh

{"title":"Use of support vector machine for wind speed prediction","authors":"Patil SangitaB, S. Deshmukh","doi":"10.1109/ICPES.2011.6156611","DOIUrl":"https://doi.org/10.1109/ICPES.2011.6156611","url":null,"abstract":"The penetration of wind energy has been encouraged significantly throughout the world. The wind power is a clean, inexhaustible, and almost a free source of energy. But the integration of wind parks with the power grid has resulted in many challenges for the unity in terms of commitment and control of power plants. As wind speed and wind direction fluctuate frequently, the accurate long-term and short-term forecasting of wind speed is important for ascertaining the wind power generation availability. To deal with wind speed forecasting, many methods have been developed such as physical method, which use lots of physical considerations to reach the best forecasting precision and other is the statistical method, which specializes in finding the relationship of the measured power data. Wind speed can be predicted by using time series analysis, artificial neural network, Kalman Filter method, linear prediction method, spatial correlation models and wavelet, also by using the support vector machines. In this paper, the SVM is used for day ahead prediction of wind speed using historical data of wind speed at site. It is observed that the Mean Absolute Percentage Error (MAPE) is around 7% and correlation coefficient is close to 1. This justifies the ability of SVM for wind speed prediction task.","PeriodicalId":158903,"journal":{"name":"2011 International Conference on Power and Energy Systems","volume":"53 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120988611","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: 22

Some aspects of power system stabilizer performance in subsynchronous resonance study 电力系统稳定器性能在次同步谐振研究中的几个方面

2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156655

M. K. Shashidhara, K. Shubhanga

引用次数: 4