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2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077)最新文献

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Regulation of synchronous generators by means of hydrostatic transmissions 用静压传动装置调节同步发电机
2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077) Pub Date : 2000-01-23 DOI: 10.1109/PESW.2000.850182
J. Cidrás, C. Carrillo
{"title":"Regulation of synchronous generators by means of hydrostatic transmissions","authors":"J. Cidrás, C. Carrillo","doi":"10.1109/PESW.2000.850182","DOIUrl":"https://doi.org/10.1109/PESW.2000.850182","url":null,"abstract":"Summary form only given as follows. In many applications within the engineering world, an isolated generator is needed (e.g. in ships). Diesel units (diesel engine and synchronous generator) are the most common solution However, the diesel engine can be eliminated if the energy from another source (e.g. the prime mover in a ship) is used to move the generator. This is the care for the shaft coupled generator, where the coupling between the mover and the generator is made via a hydrostatic transmission so that the mover can have different speeds and the generator is able to keep a constant frequency. The main problem of this system is the design of a speed governor that makes possible the desired behaviour. In this paper a simulation model is presented in order to analyse the behaviour of this kind of systems and to help in the speed governor design. The model is achieved with a parameter identification process also depicted in the paper. A comparison between simulation results and measurements is made to show the model validity.","PeriodicalId":286352,"journal":{"name":"2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129627711","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: 8
Primal-dual interior point linear programming optimal power flow for real-time congestion management 实时拥塞管理的原对偶内点线性规划最优潮流
2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077) Pub Date : 2000-01-23 DOI: 10.1109/PESW.2000.847591
X. Wang, Y. Song, Q. Lu
{"title":"Primal-dual interior point linear programming optimal power flow for real-time congestion management","authors":"X. Wang, Y. Song, Q. Lu","doi":"10.1109/PESW.2000.847591","DOIUrl":"https://doi.org/10.1109/PESW.2000.847591","url":null,"abstract":"A new framework of real-time congestion management under a deregulation environment is discussed in this paper, in which not only resources in balancing market but also some short-term bilateral contracts can be dispatched if necessary. The real-time reactive power and voltage support is also included in this framework. The linearized model of a modified decoupled optimal power flow is proposed to implement such a framework. A primal-dual interior point linear programming method with second-order predictor-corrector techniques is applied to solve this optimization problem efficiently. A 5-bus test system and three IEEE standard test systems are used to illustrate the efficiency of the proposed method. Nodal prices for the real-time congestion management, as by-products of primal-dual linear programming, are also analyzed to show how they can be used to settle the dispatching cost.","PeriodicalId":286352,"journal":{"name":"2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129140413","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: 17
Stochastic evaluation of turbine-generator shaft fatigue due to system faults and faulty synchronization 系统故障和同步故障引起的汽轮发电机轴疲劳随机评价
2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077) Pub Date : 2000-01-23 DOI: 10.1109/PESW.2000.849952
S. Aboreshaid, S. Al-Dhalaan
{"title":"Stochastic evaluation of turbine-generator shaft fatigue due to system faults and faulty synchronization","authors":"S. Aboreshaid, S. Al-Dhalaan","doi":"10.1109/PESW.2000.849952","DOIUrl":"https://doi.org/10.1109/PESW.2000.849952","url":null,"abstract":"In spite of the fact that the nature of the interaction between transmission network disturbances and the turbine-generator shaft system is subject to a relatively large uncertainty, the analysis of turbine-generator shaft torques has been usually performed using a deterministic framework. This paper presents a more realistic probabilistic approach in studying this phenomenon. In this approach, an analytical technique is used to evaluate the maximum turbine-generator shaft torsional torques considering the uncertainties associated with system faults and faulty synchronization. Since the probabilistic nature of the basic initiating factors of events such as the error angle, the generator speed, the fault type, the fault location and line reclosing scheme are independent and mutually exclusive, the conditional probability theorem can be utilized to assess the turbine-generator shaft fatigue. A calculation method is shown for the expected life expenditure ratio and the expected shaft lifetime taking into consideration these factors and using the shaft strength characteristics.","PeriodicalId":286352,"journal":{"name":"2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129227348","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: 4
The use of time-varying AR models for the characterization of voltage disturbances 使用时变AR模型来表征电压扰动
2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077) Pub Date : 2000-01-23 DOI: 10.1109/PESW.2000.847353
I. Gu, M. Bollen, E. Styvaktakis
{"title":"The use of time-varying AR models for the characterization of voltage disturbances","authors":"I. Gu, M. Bollen, E. Styvaktakis","doi":"10.1109/PESW.2000.847353","DOIUrl":"https://doi.org/10.1109/PESW.2000.847353","url":null,"abstract":"A signal-processing tool, autoregressive (AR) modeling, has been introduced to analyze disturbance measurement data from events, like voltage dips, capacitor switching and transformer energization. We show that time-varying AR models may be utilized for detecting sudden transitions of the signal by examining the models' residuals. We also show a potential way of detecting and describing signal transients, using the time-evolved AR model spectra. To examine the disturbances over the entire spectral range, a multiresolution disturbance analysis scheme is presented.","PeriodicalId":286352,"journal":{"name":"2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123937127","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
Effective transmission line fault detection during power swing with wavelet transform 利用小波变换有效地检测电力振荡过程中的输电线路故障
2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077) Pub Date : 2000-01-23 DOI: 10.1109/PESW.2000.847652
Xiangning Lin, Pei Liu, Shijie Cheng
{"title":"Effective transmission line fault detection during power swing with wavelet transform","authors":"Xiangning Lin, Pei Liu, Shijie Cheng","doi":"10.1109/PESW.2000.847652","DOIUrl":"https://doi.org/10.1109/PESW.2000.847652","url":null,"abstract":"A new scheme for fault identification during power swings is proposed in this paper. The new scheme is based on the orthonormal wavelet transform algorithm. The main advantage of the proposed scheme is that fault occurring in the transmission line can be correctly identified during different kinds of power swings. Details of applying the proposed scheme in the distance protection are discussed in the paper. The effectiveness of the proposed scheme was verified with the data sampled from an EMTP based simulator. Furthermore. As only limited number of real value calculation is needed for the proposed scheme. It is easily realized in real-time applications.","PeriodicalId":286352,"journal":{"name":"2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077)","volume":"150 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123217184","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
EHV cable systems-a balanced view 超高压电缆系统-一个平衡的观点
2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077) Pub Date : 2000-01-23 DOI: 10.1109/PESW.2000.850133
B. Gregory
{"title":"EHV cable systems-a balanced view","authors":"B. Gregory","doi":"10.1109/PESW.2000.850133","DOIUrl":"https://doi.org/10.1109/PESW.2000.850133","url":null,"abstract":"As new dielectric systems are developed there is an increasing choice of underground power cable type for EHV applications. This paper considers the three types of single core cable now available for high power applications at system voltages of 400 kV and above: (1) fluid filled paper insulated cable; (2) fluid filled polypropylene paper laminate insulated cable; and (3) solid polymeric insulated cable. Consideration is given to key aspects of EHV cable design and the choice of manufacturing plant required to achieve the necessary insulation quality. These aspects include features common to each type of cable, such as the need for large conductors, high insulation design stresses and metallic sheaths. A performance comparison is made between the three cable types based upon their current ratings.","PeriodicalId":286352,"journal":{"name":"2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114068743","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
Genetic optimization of a self organizing fuzzy-neural network for load forecasting 负荷预测的自组织模糊神经网络遗传优化
2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077) Pub Date : 2000-01-23 DOI: 10.1109/PESW.2000.850076
P. Dash, S. Mishra, S. Dash, A. Liew
{"title":"Genetic optimization of a self organizing fuzzy-neural network for load forecasting","authors":"P. Dash, S. Mishra, S. Dash, A. Liew","doi":"10.1109/PESW.2000.850076","DOIUrl":"https://doi.org/10.1109/PESW.2000.850076","url":null,"abstract":"In this paper a self-organizing fuzzy-neural network with a new learning mechanism and rule optimization using genetic algorithm (GA) is proposed for load forecasting. The number of rules in the inferencing layer is optimized using a genetic algorithm and an appropriate fitness function. We devise a learning algorithm for updating the connecting weights as well as the structure of the membership functions of the network. The proposed algorithm exploits the notion of error back propagation. The network weights are initialized with random weights instead of any preselected ones. The performance of the network is validated by extensive simulation results using practical data ranging over a period of two years. The optimized fuzzy neural network provides an accurate prediction of electrical load in a time frame varying from 24 to 168 hours ahead. The algorithm is adaptive and performs much better than the existing ANN techniques used for load forecasting.","PeriodicalId":286352,"journal":{"name":"2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077)","volume":"141 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116278708","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
Convertible static compensator project-hardware overview 可转换静态补偿器项目-硬件概述
2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077) Pub Date : 2000-01-23 DOI: 10.1109/PESW.2000.847206
S. Zelingher, B. Fardanesh, B. Shperling, S. Dave, L. Kovalsky, C. Schauder, A. Edris
{"title":"Convertible static compensator project-hardware overview","authors":"S. Zelingher, B. Fardanesh, B. Shperling, S. Dave, L. Kovalsky, C. Schauder, A. Edris","doi":"10.1109/PESW.2000.847206","DOIUrl":"https://doi.org/10.1109/PESW.2000.847206","url":null,"abstract":"The development and implementation of a /spl plusmn/200 MVA convertible static compensator (CSC), the latest generation of flexible AC transmission system (FACTS) technology, will help relieve transmission line congestion in Central New York State. The CSC, a power-electronics control device based on voltage source inverter technology, is part of a transmission system reinforcement project employing a combination of FACTS and conventional technologies. The CSC is being installed at NYPA's Marcy 345 kV substation near Utica, New York. In addition, three 135 MVAr shunt capacitor banks will be installed at 345 kV substations across New York State. When fully implemented, this will provide a long-term solution to the power transfer limitations in Central New York by raising the limit of upstate-to-downstate power transfers by 240 megawatts, improving voltage and power-flow control, and maximizing the use of existing transmission assets. Enhancements to the reliability and resiliency of the network will be achieved at a critical time of electric power industry deregulation. NYPA is working together with EPRI, Siemens and a group of 21 utilities on the CSC development and implementation.","PeriodicalId":286352,"journal":{"name":"2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121783036","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: 26
Propagation characteristics of sag and harmonics in medium voltage distribution systems 中压配电系统中凹陷和谐波的传播特性
2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077) Pub Date : 2000-01-23 DOI: 10.1109/PESW.2000.847289
J. Xu, R. Annamraju, V. Rajagopalan
{"title":"Propagation characteristics of sag and harmonics in medium voltage distribution systems","authors":"J. Xu, R. Annamraju, V. Rajagopalan","doi":"10.1109/PESW.2000.847289","DOIUrl":"https://doi.org/10.1109/PESW.2000.847289","url":null,"abstract":"The propagation characteristics of power quality disturbances, such as sag and harmonics, are examined in this paper. The scope of the study is limited to large disturbances at the industrial and utility substation level, where disturbances propagate typically from one industrial customer to another through the utility networks. Based on studies on a typical distribution system, a few generalized conclusions were drawn. Even though these conclusions are case-specific, in the opinion of the authors, depending upon the closeness of the actual system to the reference system selected, these conclusions can be validated and extrapolated with relative ease using the judgement of the user.","PeriodicalId":286352,"journal":{"name":"2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114875090","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: 8
The sensitivity analysis on torsional stresses and life expenditure of turbine-generator shaft 汽轮发电机轴扭应力与寿命消耗敏感性分析
2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077) Pub Date : 2000-01-23 DOI: 10.1109/PESW.2000.849954
Qun Zhou, Yi Zhang, Jiayu Huang
{"title":"The sensitivity analysis on torsional stresses and life expenditure of turbine-generator shaft","authors":"Qun Zhou, Yi Zhang, Jiayu Huang","doi":"10.1109/PESW.2000.849954","DOIUrl":"https://doi.org/10.1109/PESW.2000.849954","url":null,"abstract":"This paper explores sensitivities of torsional stresses to design parameters of turbine-generator shafts. The sensitivity guideline is as a new concept to reduce the high torsional torque to which the turbine-generator shafts might be subjected during high speed switching of network faults. In this context, investigations have been conducted on a large turbine-generator model and its life expenditure is calculated.","PeriodicalId":286352,"journal":{"name":"2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077)","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124343192","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
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