2011 International Conference on Power and Energy Systems最新文献

Optimized voltage and reactive power adjustment in power grids using the least-squares-method: Optimization of highly utilized power grids with stochastic renewable energy-sources 用最小二乘法优化电网电压和无功调节:随机可再生能源高利用电网的优化

2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156648

T. Leveringhaus, L. Hofmann

{"title":"Optimized voltage and reactive power adjustment in power grids using the least-squares-method: Optimization of highly utilized power grids with stochastic renewable energy-sources","authors":"T. Leveringhaus, L. Hofmann","doi":"10.1109/ICPES.2011.6156648","DOIUrl":"https://doi.org/10.1109/ICPES.2011.6156648","url":null,"abstract":"By adjusting the nodal voltage the reactive power is affected likewise and vice versa. In power system planning and power system management, power-flow-calculation is used to estimate the state of a power system. In the majority of cases only active power generation and consumption is known. To estimate the state of a power system, the voltage at the so called PV-nodes (nodes with variable reactive power injection but determined voltage) is determined with the nominal voltage. This approach is widely used but suboptimal: In highly utilized areas of the grid the determined voltage is too low, because the limitations of voltage become underruned at nodes with high consumption. In low utilized areas of the grid the determined voltage is too high, because limitations of voltage become overruned due to Ferrantis effect. This paper describes and evaluates an approach with the Gauss-Newton algorithm (least-squares-method) to minimize the deviation Δu = uK − unN/√3 of every node and to minimize the deviation Δcos(ϕ) = cos(ϕ) −1 of every node with active power generation. The approach is physically based and uses the Jacobian matrices of the power-flow-calculation. Mainly in highly utilized states of the grid a minimized Δu is necessary to assure the voltage stability. The simulation results reveal a great benefit and a high potential for both optimal voltage adjustment and reactive power adjustment to minimize Δcos(ϕ). To integrate stochastic renewable energy sources into power grids, intelligent power system planning and power system management tools are needed to assure reliable states of operation.","PeriodicalId":158903,"journal":{"name":"2011 International Conference on Power and Energy Systems","volume":"47 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":"115116097","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

Integral square error minimization technique for linear multi input and multi output systems 线性多输入多输出系统的积分平方误差最小化技术

2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156665

Indranil Saaki, P. C. Babu, C. K. Rao, D. Prasad

引用次数: 10

Investigation of neem ethyl ester for electrification 电气化用印楝乙酯的研究

2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156615

G. Gowri, M. Kannan, A. Murugesan

引用次数: 2

Deployment of System Protection Schemes for enhancing reliability of power system: Operational experience of wide area SPS in Northern Regional Power System in India 提高电力系统可靠性的系统保护方案的部署:印度北部地区电力系统广域SPS的运行经验

2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156645

V. Agrawal, R. Porwal, R. Kumar, Pandey Vivek, T. Muthukumar

引用次数: 17

Predictive dynamic arc model of the pre-flashover leakage current on polymeric insulators 聚合物绝缘子闪络前漏电流的预测动态电弧模型

2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156638

C. Muniraj, S. Chandrasekar

引用次数: 1

An ANN based network reconfiguration approach for voltage stability improvement of distribution network 基于人工神经网络的配电网电压稳定性改进网络重构方法

2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156643

P. Kayal, S. Chanda, C. K. Chanda

{"title":"An ANN based network reconfiguration approach for voltage stability improvement of distribution network","authors":"P. Kayal, S. Chanda, C. K. Chanda","doi":"10.1109/ICPES.2011.6156643","DOIUrl":"https://doi.org/10.1109/ICPES.2011.6156643","url":null,"abstract":"Recent trend in power sector is to automate distribution system to improve their reliability, efficiency and service quality. To facilitate automation of distribution system, an Artificial Neural Network (ANN) based novel methodology for enhancement of voltage stability by network reconfiguration is presented in this paper. Network reconfiguration is a process which alters the feeder topological structure by changing the open/close status of the sectionalizing (normally closed) and ties switches (normally open) in the system. A new voltage stability index is developed for voltage stability assessment of whole distribution network. In this work, a two stage search of switching option i.e. local search and global search is implemented to achieve desired network configuration. A multilayer ANN model with Error Back Propagation Learning (EBPL) algorithm is simulated for global search to obtained optimal set of candidate switching. The proposed scheme is tested on an 11 kV practical radial distribution system consisting of 52 buses. The experimental results are promising and encouraging. After reconfiguration, better voltage stable condition of the system is attained. Other objectives which are also satisfied are minimization of active and reactive power losses and improvement of voltage profile of most of the buses.","PeriodicalId":158903,"journal":{"name":"2011 International Conference on Power and Energy Systems","volume":"41 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":"129204735","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

Id-Iq control strategy for mitigation of current harmonics with PI and fuzzy controllers 基于PI和模糊控制器的电流谐波控制策略

2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156668

Suresh Mikkili, A. Panda

{"title":"Id-Iq control strategy for mitigation of current harmonics with PI and fuzzy controllers","authors":"Suresh Mikkili, A. Panda","doi":"10.1109/ICPES.2011.6156668","DOIUrl":"https://doi.org/10.1109/ICPES.2011.6156668","url":null,"abstract":"The prevalent difficulty with harmonics is voltage & current waveform distortion. The Electronic equipment like, computers, battery chargers, electronic ballasts, variable frequency drives, and switching mode power supplies generate perilous harmonics. Issue of Harmonics are of a greater concern to engineers and building designers because they do more than distort voltage waveforms, they can overheat the building wiring, cause nuisance tripping, overheat transformer units, and cause random end-user equipment failures. Thus power quality has become more and more serious with each passing day. As a result active power filter (APF) gains much more attention due to excellent harmonic compensation. But still the performance of the active filter seems to be in contradictions with different control techniques. The main objective of this paper is to analyse shunt active filter with fuzzy and pi controllers. To carry out the analysis, we consider active and reactive current method (id-iq). Extensive simulations were carried out; simulations were performed with balance, unbalanced and non sinusoidal conditions. Simulation results validate the dynamic behaviour of fuzzy logic controller over pi controller.","PeriodicalId":158903,"journal":{"name":"2011 International Conference on Power and Energy Systems","volume":"47 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":"132221877","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: 15

On critical mode of bifurcation point and loadability in shunt compensated multi-bus power system 并联补偿多母线电力系统分岔点及负荷的临界模式研究

2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156653

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

引用次数: 1

Optimal location and sizing of STATCOM for voltage security enhancement using PSO-TVAC 利用PSO-TVAC增强电压安全性的STATCOM的最佳位置和尺寸

2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156646

S. Varshney, L. Srivastava, M. Pandit

引用次数: 18

Performance analysis of Series Active Filter under non sinusoidal supply and non linear loading 串联有源滤波器在非正弦电源和非线性负载下的性能分析

2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156678

K. Venkatraman, M. P. Selvan, S. Moorthi

引用次数: 1