Load research and load estimation in ele
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Load research and load estimation in ele
VTT PUBLICATIONS 289Load research and load estimation in electricity distributionAnssi SeppãlăVTT EnergyDissertation for the degree of Doctor of Techn Load research and load estimation in ele nology to be presented With due permission for public examination and debate in Auditorium SI at Helsinki University of Technology (Espoo. Finland) on the 29ĩh of November, 1996. at 12 o ’clock noon.■^TTTECHNICAL RESEARCH CENTRE OF FINLAND ESPOO 1996ISBN 951-38-4947-3 (soft back ed.)ISSN 1235-0621 ( Load research and load estimation in ele soft back ed.)ISBN 951-38-5200-8 (URL: http://www.mfAit.fi pdf')ISSN 1455-0849 (URL: http://www.inf.vtt.fi pdf')Copyright © Valtion teknillinen tutkimLoad research and load estimation in ele
uskeskus (VTT) 1996JULKAISIJA - ƯTGIVARE - PUBLISHERValtion teknillinen tutkimuskeskus (VTT), Vuorimiehentie 5. PL 2000. 02044 VTTpuh. vaihde (09) 456VTT PUBLICATIONS 289Load research and load estimation in electricity distributionAnssi SeppãlăVTT EnergyDissertation for the degree of Doctor of Techn Load research and load estimation in ele search Centre of Finland (VTT), Vuonniiehentie 5, P.O.Box 2000, FIN-02044 VTT. Finland phone internal. + 358 9 4561, fax + 358 9 456 4374VTT Energia. Energiajarjestehnat. Tekniikantie 4 c. PL 1606. 02044 VTT puh. vaihde (09) 4561, faksi (09) 456 6538VTT Energi. Energisystem. Teknikvãgen 4 c. PB 1606 Load research and load estimation in ele . 02044 VTT tel. vãxel (09) 4561. fax (09) 456 6538VTT Energy, Energy Systems. Tekniikantie 4 c, P.O.Box 1606, FIN-02044 VTT, Finland phone internal.Load research and load estimation in ele
+ 35$ 9 4561, fax - 358 9 456 6538Technical editing Leena UkskoskiVTT OFFSETPAINO. ESPOO 1996Seppălã, Anssi. Load research and load estimation in elecVTT PUBLICATIONS 289Load research and load estimation in electricity distributionAnssi SeppãlăVTT EnergyDissertation for the degree of Doctor of Techn Load research and load estimation in ele electric power generation, electric power distribution, electric loads, load research, load estimation, electricity, distribution systems, customers, measurement, models, variations, analyzingABSTRACTThe topics introduced in this thesis are: the Finnish load research project, a simple form customer Load research and load estimation in ele class load model, analysis of the origins of customer’s load distribution, a method for the estimation of the confidence interval of customer loads anLoad research and load estimation in ele
d Distribution Load Estimation (DLE) which utilises both the load models and measurements from distribution networks.These developments bring new knowVTT PUBLICATIONS 289Load research and load estimation in electricity distributionAnssi SeppãlăVTT EnergyDissertation for the degree of Doctor of Techn Load research and load estimation in ele tric utility applications. The economic benefit is to decrease investment costs by reducing the planning margin when the loads are more reliably estimated in electrc utilities. As the Finnish electricity production, transmission and distribution is moving towards the de-regulated electricity markets Load research and load estimation in ele , this study also contributes to the development for this new situation.The Finnish load research project started in 1983. The project was initially cLoad research and load estimation in ele
oordinated by the Association of Finnish Electric Utilities and 40 utilities joined the project. Now there are over 1000 customer hourly load recordinVTT PUBLICATIONS 289Load research and load estimation in electricity distributionAnssi SeppãlăVTT EnergyDissertation for the degree of Doctor of Techn Load research and load estimation in ele en used by the Finnish utilities for several years. There is now available models for 46 different customer classes. The only variable of the model is the customer's annual energy consumption. The model gives the customer’s average hourly load and standard deviation for a selected month, day and hou Load research and load estimation in ele r.The statistical distribution of customer loads is studied and a model for customer electric load variation is developed. The model results in a3lognLoad research and load estimation in ele
ormal distribution as an extreme case. The model is easy to simulate and produces distributions similar to those observed in load research data. AnalyVTT PUBLICATIONS 289Load research and load estimation in electricity distributionAnssi SeppãlăVTT EnergyDissertation for the degree of Doctor of Techn Load research and load estimation in ele del', a method for estimating confidence intervals (confidence limits) of customer hourly load is developed. The two methods selected for final analysis are based on normal and lognormal distribution estimated in a simplified manner. The simplified lognormal estimation method is a new method present Load research and load estimation in ele ed in this thesis. The estimation of several cumulated customer class loads is also analysed.Customer class load estimation which combines the informaLoad research and load estimation in ele
tion from load models and distribution network load measurements is developed. This method, called Distribution Load Estimation (DLE), utilises informVTT PUBLICATIONS 289Load research and load estimation in electricity distributionAnssi SeppãlăVTT EnergyDissertation for the degree of Doctor of Techn Load research and load estimation in ele important result of DLE is the estimate of the customer class' share to the distribution system's total load.VTT PUBLICATIONS 289Load research and load estimation in electricity distributionAnssi SeppãlăVTT EnergyDissertation for the degree of Doctor of TechnGọi ngay
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