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2001 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.01CH37194)最新文献

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A quick and practicable power flow tracing method on electric energy market. I. Theoretic fundament 一种快速实用的电力市场潮流跟踪方法。一、理论基础
2001 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.01CH37194) Pub Date : 2001-01-28 DOI: 10.1109/PESW.2001.917253
Fubin Liu, Y. Li, G. Tang
{"title":"A quick and practicable power flow tracing method on electric energy market. I. Theoretic fundament","authors":"Fubin Liu, Y. Li, G. Tang","doi":"10.1109/PESW.2001.917253","DOIUrl":"https://doi.org/10.1109/PESW.2001.917253","url":null,"abstract":"In a competitive market environment, to \"fairly allocate the total cost of transmission\", which is identical with the actual utilization of the network, is most important. Based on network theory and graph theorem, this paper theoretically proves and extends the proportional sharing principle. With it, the employment of transmission lines by different generators and loads can be confirmed theoretically, while energy consumers can be impartially, rationally charged, and quickly and truly ascertained according to the actual utilization of the network. Also based on this principle, many problems in the electricity energy market field can be settled.","PeriodicalId":253534,"journal":{"name":"2001 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.01CH37194)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123234474","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
The European network expansion east wards 欧洲网络向东扩张
2001 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.01CH37194) Pub Date : 2001-01-28 DOI: 10.1109/PESW.2001.916854
J. Kowal
{"title":"The European network expansion east wards","authors":"J. Kowal","doi":"10.1109/PESW.2001.916854","DOIUrl":"https://doi.org/10.1109/PESW.2001.916854","url":null,"abstract":"The Western Europe electricity network has for long been one of the largest synchronous systems. During the sixties it spread for Spain to the eastern borders of Germany, Austria, former Yugoslavia and Greece. At the same time an eastern system was operated, under the leadership of Russia: the Iron Curtain also applied to the electrical systems. Thus continental Europe was covered by three separate synchronous systems : the Western system, so-called the UCPTE system, the Scandinavian system called NORDEL and the Eastern system. Only a weak DC connection existed between NORDEL and UCTE. The disappearance of the Soviet Union resulted into the disintegration of the Eastern system and a process of extension of the Western system. We are still in this process and the present open question to be answered is whether we can expect one day a synchronous system encompassing Europe and Russia, on one hand, and circling the Mediterranean Sea from Turkey to Spain, on the other.","PeriodicalId":253534,"journal":{"name":"2001 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.01CH37194)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124856060","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: 0
Assessment of overload capacity of power transformers by on-line monitoring systems 基于在线监测系统的电力变压器过载能力评估
2001 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.01CH37194) Pub Date : 2001-01-28 DOI: 10.1109/PESW.2001.917057
S. Tenbohlen, T. Stirl, M. Stach
{"title":"Assessment of overload capacity of power transformers by on-line monitoring systems","authors":"S. Tenbohlen, T. Stirl, M. Stach","doi":"10.1109/PESW.2001.917057","DOIUrl":"https://doi.org/10.1109/PESW.2001.917057","url":null,"abstract":"Overloading of power transformers can become necessary in open electricity markets due to economic reasons or simply to ensure continuous energy supply. During an overload cycle accelerated ageing and damage have to be strictly avoided. In order to control overload cycles intelligent on-line monitoring systems are needed. In this contribution the on-line calculation of the overload capacity and the integration in a monitoring system are described. By measurement of environmental and loading conditions it delivers continuously information on the maximum continuous and short time overload considering the actual preload of the transformer according to IEC 60354. The presentation of practical experiences shows the considerable possibilities regarding optimization of transformer operation during normal cyclic loading and emergency cases. Also a load dependent control of the cooling unit by the monitoring system allows an increase in the overload capacity and optimization of the hot-spot temperature.","PeriodicalId":253534,"journal":{"name":"2001 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.01CH37194)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126311330","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: 35
Influence of the time constant of DC component on interrupting duty of GCB 直流分量时间常数对GCB断流负荷的影响
2001 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.01CH37194) Pub Date : 2001-01-28 DOI: 10.1109/PESW.2001.917052
T. Satou, M. Nishio, K. Kawakita, S. Baba, K. Kamei, Y. Hirano, A. Kobayashi, T. Nakamoto, K. Hirasawa, Y. Yamane
{"title":"Influence of the time constant of DC component on interrupting duty of GCB","authors":"T. Satou, M. Nishio, K. Kawakita, S. Baba, K. Kamei, Y. Hirano, A. Kobayashi, T. Nakamoto, K. Hirasawa, Y. Yamane","doi":"10.1109/PESW.2001.917052","DOIUrl":"https://doi.org/10.1109/PESW.2001.917052","url":null,"abstract":"The time constant of the DC component of fault currents in Japanese power systems has gradually been increased due to the concentration of power sources and utilization of large capacity transmission lines. Large time constants of the DC component are proposed in the new draft of future IEC 60056 and the latest Japanese standard (JEC-2300-1998). From the point of view of reliability in the system, it is important to investigate the influence of the time constant of DC component on interrupting duty of GCB. The authors performed interrupting tests with asymmetrical current on 550 kV 63 kA GCB by the equivalent test method. The procedure of the equivalent test method is as follows: decision of the arcing time in single-phase short-circuit test considering maximum arc energy in three-phase terminal fault; waveform simulation of the interrupting current at the last major loop; and evaluation of dielectric recovery characteristics using 2-part method.","PeriodicalId":253534,"journal":{"name":"2001 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.01CH37194)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129339120","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: 1
Steady state performance of polyphase permanent magnet synchronous motor fed from single phase supply system 单相供电系统多相永磁同步电动机的稳态性能
2001 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.01CH37194) Pub Date : 2001-01-28 DOI: 10.1109/PESW.2001.917293
B. Chaudhari, B. G. Fernandes
{"title":"Steady state performance of polyphase permanent magnet synchronous motor fed from single phase supply system","authors":"B. Chaudhari, B. G. Fernandes","doi":"10.1109/PESW.2001.917293","DOIUrl":"https://doi.org/10.1109/PESW.2001.917293","url":null,"abstract":"The operation of a three phase induction motor from a single phase supply with a capacitor in circuit is well known. While detailed investigations on induction motor performance under such operating condition are reported in the literature, no such work is reported for a synchronous motor. This paper presents analytical and experimental evaluation of the performance of a three phase permanent magnet synchronous motor (PMSM) fed from a single phase supply. A capacitor is connected across two of the stator phases during starting and running. The symmetrical component concept is used for the analysis. Estimation of capacitor value to meet the desired objective such as minimum unbalance or maximum efficiency is carried out. Experimental load tests are conducted on the machine, which validate the simulation results.","PeriodicalId":253534,"journal":{"name":"2001 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.01CH37194)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129738675","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
A free-model based power system stabilization 基于自由模型的电力系统稳定
2001 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.01CH37194) Pub Date : 2001-01-28 DOI: 10.1109/PESW.2001.917244
K.Y. Lee, H. Ko, Ho-Chan Kim, Jin-Ho Lee, Young-Moon Park
{"title":"A free-model based power system stabilization","authors":"K.Y. Lee, H. Ko, Ho-Chan Kim, Jin-Ho Lee, Young-Moon Park","doi":"10.1109/PESW.2001.917244","DOIUrl":"https://doi.org/10.1109/PESW.2001.917244","url":null,"abstract":"The free-model concept is introduced as an alternative intelligent system technique to design a controller with input and output data only. The idea of free model comes from the Taylor series approximation, where an output can be estimated when such data as position, velocity, and acceleration are known. The parameters in the free model can be estimated using the input-output data and a controller can be designed based on the free model. The free model thus developed is shown to be controllable, observable, and robust. The accuracy of the free-model approximation can be improved by increasing the observation window and the order of the free model. The LQR method is applied to the free model to design power system stabilizers (PSS) for the two tested power systems, and compared with the conventional PSS.","PeriodicalId":253534,"journal":{"name":"2001 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.01CH37194)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130043814","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
Now that you have a combined-cycle plant in your backyard 现在你的后院有了一个联合循环装置
2001 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.01CH37194) Pub Date : 2001-01-28 DOI: 10.1109/PESW.2001.916930
R. Boyer
{"title":"Now that you have a combined-cycle plant in your backyard","authors":"R. Boyer","doi":"10.1109/PESW.2001.916930","DOIUrl":"https://doi.org/10.1109/PESW.2001.916930","url":null,"abstract":"The electric power business is changing, and part of this change is an increase in the number and size of combined-cycle power plants in operation. Because the response characteristics of combined-cycle plants are different from those of conventional steam boiler plants, models for these plants are needed. The purpose of this paper is to encourage the development of standard, consensus models for combined-cycle plants by illustrating instances where utility planners could use these models.","PeriodicalId":253534,"journal":{"name":"2001 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.01CH37194)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115962675","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
A new real-time negative and positive sequence components detecting method based on space vector 一种新的基于空间矢量的负、正序列分量实时检测方法
2001 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.01CH37194) Pub Date : 2001-01-28 DOI: 10.1109/PESW.2001.917048
Guibin Zhang, Zheng Xu
{"title":"A new real-time negative and positive sequence components detecting method based on space vector","authors":"Guibin Zhang, Zheng Xu","doi":"10.1109/PESW.2001.917048","DOIUrl":"https://doi.org/10.1109/PESW.2001.917048","url":null,"abstract":"Based on the concept of the space vector, a new method for real-time detection of the fundamental negative and positive sequence components as well as the harmonic components of power system signals is developed in this paper. In the method, the three-phase quantity is firstly converted into a space vector, whose real part and imaginary part are filtered by two filters respectively in order to eliminate the harmonics. After filtering, the space-vector is composed of two vectors actually. The counter-clockwise rotating one corresponds to the fundamental positive sequence component, and the clockwise rotating one corresponds to the fundamental negative sequence component. A method is developed in the paper to real-time decompose the two vectors. After decomposing, rotate the two vectors a proper angle according to the phase error caused by the filters at the fundamental frequency respectively the phase error can be eliminated. So the fundamental negative and positive sequence components can be real-time detected with high precision. At the same time, the harmonics can also be detected by the method. Simulation results have validated the proposed method.","PeriodicalId":253534,"journal":{"name":"2001 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.01CH37194)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115998201","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
Accurate modeling and simulation of transmission line transients using frequency dependent modal transformations 基于频率相关模态变换的输电线路瞬态精确建模与仿真
2001 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.01CH37194) Pub Date : 2001-01-28 DOI: 10.1109/PESW.2001.917314
A. Abur, O. Ozgun, F. Magnago
{"title":"Accurate modeling and simulation of transmission line transients using frequency dependent modal transformations","authors":"A. Abur, O. Ozgun, F. Magnago","doi":"10.1109/PESW.2001.917314","DOIUrl":"https://doi.org/10.1109/PESW.2001.917314","url":null,"abstract":"The frequency dependent line model (also known as the J. Marti model) which is currently used in most electromagnetic transient programs, is very efficient and accurate for most simulation cases. However, it makes an approximation in choosing the modal transformation matrix that is used to switch variables between the phase and modal domains at each simulation time step. This approximation may not hold true for certain tower configurations and/or conductor types where line parameters vary drastically with frequency. In this paper, a wavelet based alternative solution, which incorporates frequency dependence of transformation matrices into the simulation process is presented.","PeriodicalId":253534,"journal":{"name":"2001 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.01CH37194)","volume":"208 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122433171","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: 18
Simultaneous inter-area decoupling and local area damping by voltage source HVDC 电压源高压直流同步区间解耦和局部阻尼
2001 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.01CH37194) Pub Date : 2001-01-28 DOI: 10.1109/PESW.2001.917219
W. Lu, B. Ooi
{"title":"Simultaneous inter-area decoupling and local area damping by voltage source HVDC","authors":"W. Lu, B. Ooi","doi":"10.1109/PESW.2001.917219","DOIUrl":"https://doi.org/10.1109/PESW.2001.917219","url":null,"abstract":"The voltage-source converter (VSC) has 2 independent control degrees of freedom over P and Q (or P and V). Thus a high voltage DC (HVDC) transmission link based on VSCs (VSC HVDC) has 4 steady-state control freedoms. Of these, 2 are devoted to specifying and to coordinating the real power P through the DC link. This leaves one control freedom at each converter station to control the reactive power Q. Dynamically, the VSC-HVDC link has again 4 control freedoms based on the perturbation variables /spl Delta/P and /spl Delta/Q (or /spl Delta/P and /spl Delta/V). Through digital simulations, this paper shows that the two /spl Delta/Ps can de-couple the inter-area modes and each /spl Delta/V (or /spl Delta/Q) can simultaneously damp local modes within the area in which the converter station is situated. A mathematical proof for these capabilities is given in an appendix.","PeriodicalId":253534,"journal":{"name":"2001 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.01CH37194)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122523221","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: 20
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