2011 International Conference on Power and Energy Systems最新文献_第6页

Network congestion management by fuzzy inference using virtual flows 基于虚拟流的模糊推理网络拥塞管理

2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156647

Surendra S. D Thukaram

引用次数: 2

Day ahead load forecasting models for holidays in Indian context 印度假期日前负荷预测模型

2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156652

R. S. Fernandes, Y. Bichpuriya, M. Rao, S. Soman

{"title":"Day ahead load forecasting models for holidays in Indian context","authors":"R. S. Fernandes, Y. Bichpuriya, M. Rao, S. Soman","doi":"10.1109/ICPES.2011.6156652","DOIUrl":"https://doi.org/10.1109/ICPES.2011.6156652","url":null,"abstract":"Accurate Short Term Load Forecasting (STLF) is critical for efficient functioning of electricity distribution company. High forecast error may result in non-optimal system operations and financial risk in short term power markets. Load profiles on holidays are very different from that on normal days. In India, holidays can be categorized as Sunday, Public holidays (e.g., Independence day, Republic day etc.) and Festival days (e.g., Diwali, Eid, Christmas etc.). Apart from these holidays, there are a few regional holidays e.g., Ganesh Chaturthi and Maharashtra day in the state of Maharashtra. Sunday is a repeated holiday having weekly frequency while other holidays come once in a year. Also, some of these holidays follows lunar calender and some follows Gregorian calender. Each holiday, excluding Sunday and Public holidays, has different characteristics in terms of activities, lighting load and the number of peoples celebrating the holiday. In such a scenario, predicting the accurate load profile for the holidays is a difficult task. This paper proposes two different models for Sunday and other holidays. Sunday model is used for forecasting load profile on Sundays and Holiday model is used for all other public holidays and festival days. The proposed models have been tested on load data of an urban distribution utilities and the results are illustrated.","PeriodicalId":158903,"journal":{"name":"2011 International Conference on Power and Energy Systems","volume":"71 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":"129473141","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

Performance assessment of an impedance based islanding detection method in a distribution network with multiple PV inverters 多光伏逆变器配电网中基于阻抗的孤岛检测方法的性能评估

2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156661

S. A. S. Hesari, M. Hamzeh, Hadi Toobak

引用次数: 11

Mitigation of harmonics in grid integrated wind farms 电网综合风电场谐波的缓解

2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156681

K. Munji, R. Bhimasingu

引用次数: 5

A novel out-of-step detection algorithm using angle of power signal 一种新的基于功率信号角度的失步检测算法

2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156631

R. Dubey, S. Samantaray, B. Babu, S. N. Kumar

引用次数: 11

Optimization of hybrid PV/wind power system for remote telecom station 远程通信站光伏/风力混合发电系统优化

2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156618

Subodh Paudel, J. Shrestha, Fernando Buarque de Lima-Neto, Jorge A. F. Ferreira, Muna Adhikari

{"title":"Optimization of hybrid PV/wind power system for remote telecom station","authors":"Subodh Paudel, J. Shrestha, Fernando Buarque de Lima-Neto, Jorge A. F. Ferreira, Muna Adhikari","doi":"10.1109/ICPES.2011.6156618","DOIUrl":"https://doi.org/10.1109/ICPES.2011.6156618","url":null,"abstract":"The rapid depletion of fossil fuel resources and environmental concerns has given awareness on generation of renewable energy resources. Among the various renewable resources, hybrid solar and wind energy seems to be promising solutions to provide reliable power supply with improved system efficiency and reduced storage requirements for stand-alone applications. This paper presents a feasibility assessment and optimum size of photovoltaic (PV) array, wind turbine and battery bank for a standalone hybrid Solar/Wind Power system (HSWPS) at remote telecom station of Nepal at Latitude (27°23′50″) and Longitude (86°44′23″) consisting a telecommunication load of Very Small Aperture Terminal (VSAT), Repeater station and Code Division Multiple Access Base Transceiver Station (CDMA 2C10 BTS). In any RES based system, the feasibility assessment is considered as the first step analysis. In this work, feasibility analysis is carried through hybrid optimization model for electric renewables (HOMER) and mathematical models were implemented in the MATLAB environment to perform the optimal configuration for a given load and a desired loss of power supply probability (LPSP) from a set of systems components with the lowest value of cost function defined in terms of reliability and levelized unit electricity cost (LUCE). The simulation results for the existing and the proposed models are compared. The simulation results shows that existing architecture consisting of 6.12 kW KC85T photovoltaic modules, 1kW H3.1 wind turbine and 1600 Ah GFM-800 battery bank have a 36.6% of unmet load during a year. On the other hand, the proposed system includes 1kW ∗2 H3.1 Wind turbine, 8.05 kW TSM-175DA01 photovoltaic modules and 1125 Ah T-105 battery bank with system reliability of 99.99% with a significant cost reduction as well as reliable energy production.","PeriodicalId":158903,"journal":{"name":"2011 International Conference on Power and Energy Systems","volume":"12 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":"126830909","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: 64

Performance evaluation of AGC of SHP with multi-area power system 多区域电力系统SHP AGC性能评价

2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156666

Lea J. Puthumana, J. Jaleel

{"title":"Performance evaluation of AGC of SHP with multi-area power system","authors":"Lea J. Puthumana, J. Jaleel","doi":"10.1109/ICPES.2011.6156666","DOIUrl":"https://doi.org/10.1109/ICPES.2011.6156666","url":null,"abstract":"In this paper a detailed study of small hydro power plant, a novel technique to reduce the size of the dump load, auomatic generation control, its simulation and case study of Mankulam small hydro plant etc. is done. Two pipe and Three pipe strategy with proportional-integral controller and on/off controller is proposed here. By using Matlab / SIMULINK, frequency deviation response and dump load response, with step input and chirp input are plotted with different load conditions. The water flowing through the penstock is rerouted in smaller pipes, two or three fitted with motor operated valves. The opening or closing of the valves is achieved by on/off controls. The on/off control linearly raises or lowers the generation. A generalized transfer function model for the system is developed with an on/off control logic. Finally, the transient performance of the system is compared for the two-pipe case (50% dump load) and the three-pipe case (30% dump load). Therefore, the proposed scheme is very effective in automatic generation control of the small-hydro system in addition to reduction in the size of the dump load by 50% and/or 30%, and also, the cost of the controllers including valves is considerably less than the dump load cost, in addition to saving water.","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":"114466873","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: 2

Linear programming approach for state estimation incorporating phasor measurements 包含相量测量的状态估计的线性规划方法

2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156657

V. S. Kumar, D. Thukaram

引用次数: 0

On electric fields in belted cables and 3-phase gas insulated cables 论带式电缆和三相气体绝缘电缆中的电场

2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156690

G. S. Punekar, Tesfaye Nafo, N. Kishore

{"title":"On electric fields in belted cables and 3-phase gas insulated cables","authors":"G. S. Punekar, Tesfaye Nafo, N. Kishore","doi":"10.1109/ICPES.2011.6156690","DOIUrl":"https://doi.org/10.1109/ICPES.2011.6156690","url":null,"abstract":"The electric field distribution in Belted Cables and 3-phase gas insulated cables (GIC) enclosed in a common ground enclosure is analyzed and presented in this paper. The electric fields in this type of GIC are analogous to those of 3-phase belted cables. Unlike 3-phase screened cables, the stress distribution in belted cables is not radial. With time varying voltages (power frequency voltage variations; quasi-static voltages) the stress distribution in the cable insulation changes, not being radial. The electric stress distribution is expected to show systematic, revolving effect. This revolving effect is important as the location of maximum stresses keep on shifting. Also, as a secondary effect, the revolving e-field results into electric-field-winds which can add to the particle movements in the gas insulated cables. The literature acknowledges that particle movements in the gas insulated system can have deleterious effect on the over all system insulation strength; which partly get impetus from e-field-winds. The stresses in such a cable are analyzed using open source software Finite Element Method Magnetics (FEMM). The results presented show that the field distribution over a cycle (of 50 Hz) at discrete time intervals are thought to be having a great educational value, giving a feel of electric field variation in (i) belted cables and (ii) GIC with common enclosure. The computed results of electric stress and potential distribution using FEMM are compared with available results based on CSM models to validate the present results where ever possible.","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":"130943743","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

Variable speed stand-alone wind energy conversion system using synchronous generator 变速单机风能转换系统采用同步发电机

2011 International Conference on Power and Energy Systems Pub Date : 2011-12-01 DOI: 10.1109/ICPES.2011.6156617

S. Sharma, Bhim Singh

引用次数: 6