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PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409)最新文献

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Evaluation of stability and electric power quality in power system by using phasor measurements 用相量测量法评价电力系统的稳定性和电能质量
PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409) Pub Date : 2000-12-04 DOI: 10.1109/ICPST.2000.898163
Y. Ota, H. Ukai, K. Nakamura, H. Fujita
{"title":"Evaluation of stability and electric power quality in power system by using phasor measurements","authors":"Y. Ota, H. Ukai, K. Nakamura, H. Fujita","doi":"10.1109/ICPST.2000.898163","DOIUrl":"https://doi.org/10.1109/ICPST.2000.898163","url":null,"abstract":"The authors have developed a high-speed and high precision PMU (phasor measurement unit) by using a DSP (digital signal processor) and the GPS (Global Positioning System). The developed PMU enables to calculate the voltage and current phasors and the other state variables in power network systems from the measured instantaneous voltage and current in real-time. These phasor measurements provide vital information for stability analysis, and enable to evaluate power quality. In this paper, the authors propose a step-out prediction method in the power system using the phasor measurements. In this method, the power system is divided to the coherent groups of generators and each group is aggregated to one equivalent generator model. The aggregated model reflects the state and the structure of the actual power system at the present time. Then the state variables of each aggregated generator is estimated, at the same time the future phase angle is predicted by solving swing equations. In particular, the procedure and the evaluation of the effectiveness are confirmed in detail by some experiments using the real-time simulator (PSA).","PeriodicalId":330989,"journal":{"name":"PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409)","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115972695","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
A LabVIEW based virtual instrument for power analyzers 基于LabVIEW的功率分析仪虚拟仪器
PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409) Pub Date : 2000-12-04 DOI: 10.1109/ICPST.2000.900052
J. Teng, Shun Y. Chan, Jin-Chang Lee, R. Lee
{"title":"A LabVIEW based virtual instrument for power analyzers","authors":"J. Teng, Shun Y. Chan, Jin-Chang Lee, R. Lee","doi":"10.1109/ICPST.2000.900052","DOIUrl":"https://doi.org/10.1109/ICPST.2000.900052","url":null,"abstract":"In this paper, a PC-based virtual instrument (VI) for a power analyzer is developed. Instead of theoretical research, a practical VI that can be integrated into an existing VI system is developed. The functions of power analyzer developed in this paper include the harmonic analyzer and instantaneous power measurement. The proposed VI is based on the LabVIEW (Laboratory Virtual Instrument Engineering Workbench) language under the workbench of the MS Windows 95/98 operating system. The capability of the proposed method can be expanded according to the requirements of users. Some sub-VIs for the power analyzer are developed in this paper and the idea of software integrated circuit (IC) can be achieved by using these sub-VIs. All sub-VIs developed in the paper are free for noncommercial use.","PeriodicalId":330989,"journal":{"name":"PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116640589","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: 44
High-voltage live tank circuit-breakers with composite insulators 带复合绝缘子的高压带电罐断路器
PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409) Pub Date : 2000-12-04 DOI: 10.1109/ICPST.2000.898143
A. Bosma, Å. Hammarsten, R. Thomas
{"title":"High-voltage live tank circuit-breakers with composite insulators","authors":"A. Bosma, Å. Hammarsten, R. Thomas","doi":"10.1109/ICPST.2000.898143","DOIUrl":"https://doi.org/10.1109/ICPST.2000.898143","url":null,"abstract":"The features of composite insulators using silicone rubber in high-voltage circuit-breakers are presented. The paper describes the design, testing and field experience with composite insulators over the past ten years. Composite insulators with silicone rubber sheds are well suited for use in high-voltage live tank circuit-breakers. Their performance is better than the traditionally known ceramic insulators, which have been verified by ample laboratory and field testing. Based on the considerations given above, composite insulators have the following features: increased safety; reduced handling damage risk; superior pollution performance; lower weight; excellent seismic performance; option for direct optic fibre incorporation.","PeriodicalId":330989,"journal":{"name":"PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114453001","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
Solving the economic dispatch problem with an integrated parallel genetic algorithm 用综合并行遗传算法求解经济调度问题
PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409) Pub Date : 2000-12-04 DOI: 10.1109/ICPST.2000.898150
C. C. Fung, S. Y. Chow, K. Wong
{"title":"Solving the economic dispatch problem with an integrated parallel genetic algorithm","authors":"C. C. Fung, S. Y. Chow, K. Wong","doi":"10.1109/ICPST.2000.898150","DOIUrl":"https://doi.org/10.1109/ICPST.2000.898150","url":null,"abstract":"The application of an integrated parallel genetic algorithm (GA) incorporating simulated annealing (SA) and tabu search (TS) techniques to the economic dispatch (ED) problem is reported in this paper. The integrated genetic algorithm is implemented in both parallel and cluster structures. The parallel computing platform is based on a network of interconnected personal computers (PC) using TCP/IP socket communication facilities. Results from a case study of determining the optimal loading of 13 generators using a network of ten Pentium II-350 computers are presented. The proposed approach has the potential to be applied to other power engineering problem such as unit commitment and maintenance scheduling.","PeriodicalId":330989,"journal":{"name":"PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116075733","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: 29
Impacts from large scale integration of wind energy farms into weak power systems 风力发电厂大规模整合到弱电力系统的影响
PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409) Pub Date : 2000-12-04 DOI: 10.1109/ICPST.2000.900030
J. Wiik, J.O. Gjefde, T. Gjengedal
{"title":"Impacts from large scale integration of wind energy farms into weak power systems","authors":"J. Wiik, J.O. Gjefde, T. Gjengedal","doi":"10.1109/ICPST.2000.900030","DOIUrl":"https://doi.org/10.1109/ICPST.2000.900030","url":null,"abstract":"In this paper dynamic aspects related to integration of wind farms into the power system are investigated. A case is considered where a hydro plant is located in the area of the wind farm. Interaction between the wind farm and the hydro power plant is given attention. Flicker contribution from the wind farm has been examined. The importance of considering the degree of synchronisation of power variations from individual windmills has been discussed. The exciter operation of the nearby hydro plant was found to have limited influence on the flicker results, thus representing the grid with a system impedance would be of sufficient accuracy for the investigation of flicker for this case. During transient situation it has been shown that disconnection of some windmills can be necessary to recover a stable operation of the power system. The results of the simulations are highly dependent on the type of models used, and they show that a representation of the turbine shaft is of high importance.","PeriodicalId":330989,"journal":{"name":"PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114609159","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: 32
Development of a test bed for high-speed power line communications 高速电力线通信试验台的研制
PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409) Pub Date : 2000-12-04 DOI: 10.1109/ICPST.2000.900099
C. Lim, P. L. So, E. Gunawan, S. Chen, T. Lie, Y. Guan
{"title":"Development of a test bed for high-speed power line communications","authors":"C. Lim, P. L. So, E. Gunawan, S. Chen, T. Lie, Y. Guan","doi":"10.1109/ICPST.2000.900099","DOIUrl":"https://doi.org/10.1109/ICPST.2000.900099","url":null,"abstract":"This paper presents the development of a power line test bed which provides a platform to simulate the 230 V power line environment in a controlled and reproducible manner. The target is to communicate data reliably over power lines at speeds of at least 1 Mbits/s with frequency ranging from 1 MHz to 10 MHz. This test bed is integrated with a power line communication channel, power line couplers, loads and impairment devices for worst case environment simulation. A method for coupling the high-frequency signal onto and from the power line is discussed. The design of digital filters for transceivers using advanced digital signal processing techniques is presented. The digital filters are used to amplify, condition and recover the high-frequency signals which have been attenuated and corrupted by noise at the channel.","PeriodicalId":330989,"journal":{"name":"PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114830860","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
State estimation for the interconnected power networks using branch outage sensitivity 基于分支停电灵敏度的互联电网状态估计
PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409) Pub Date : 2000-12-04 DOI: 10.1109/ICPST.2000.898209
Hongrae Kim
{"title":"State estimation for the interconnected power networks using branch outage sensitivity","authors":"Hongrae Kim","doi":"10.1109/ICPST.2000.898209","DOIUrl":"https://doi.org/10.1109/ICPST.2000.898209","url":null,"abstract":"This paper addresses the issues of the external system modeling and power system state estimation with the external model. A set of significant branches is identified in the external system based on their outage sensitivities on the tie-lines. Measurements on these branches are transferred to internal system and updated in real-time. The state estimator is run for different loading conditions by using the actual measurements for the internal system and selected significant external system measurements white keeping the rest of the external system measurements at their base case values. Simulation results are presented using the IEEE 118 bus system as an example.","PeriodicalId":330989,"journal":{"name":"PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409)","volume":"374 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126141300","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
A geometric approach for three-phase load balancing in distribution networks 配电网三相负荷均衡的几何方法
PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409) Pub Date : 2000-12-04 DOI: 10.1109/ICPST.2000.900072
M. Kashem, V. Ganapathy, G. Jasmon
{"title":"A geometric approach for three-phase load balancing in distribution networks","authors":"M. Kashem, V. Ganapathy, G. Jasmon","doi":"10.1109/ICPST.2000.900072","DOIUrl":"https://doi.org/10.1109/ICPST.2000.900072","url":null,"abstract":"In the proposed method, each loop in a network is represented as a circle, which is derived from the relationship between the change of load balancing due to the branch-exchange and the power-flows in the branches. If there is no change of load balancing in the system, then all the circles touch each other at the (0,0) coordinate. The circles with no load balancing are called zero load balancing change circles. The maximum load balancing loop in the network is identified by comparing the radii of all the modified zero load balancing change circles. The corresponding loop of the largest one gives the maximum improvement of load balancing in the network. Then the possible branch exchanges in the maximum load balancing loop are investigated by comparing the size of the circle for every branch-exchange. If the loads are balanced due to a branch exchange, the size of the circle diminishes and hence the smallest circle gives the maximum improvement in load balancing and the corresponding branch-exchange is considered to be the best candidate for maximum improvement in load balancing. To show the efficiency and performance of the proposed method for the solution of computationally complex and large dimensionality problems, a system with 69-bus and 7 laterals has been considered as the test system. Test results have shown that the proposed method can identify the most effective branch-exchange operations for load balancing with less computational effort and time. The number of load flow solutions has been reduced to a greater extent in the proposed method.","PeriodicalId":330989,"journal":{"name":"PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126018280","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: 10
Power interchange control of frequency converter using adjustable speed generator/motor taking into account multiple power flow conditions 考虑多种潮流条件的变频调速发电机/电机功率交换控制
PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409) Pub Date : 2000-12-04 DOI: 10.1109/ICPST.2000.897094
R. Kobayashi, A. Yokoyama, S. Ogawa, S. Verma
{"title":"Power interchange control of frequency converter using adjustable speed generator/motor taking into account multiple power flow conditions","authors":"R. Kobayashi, A. Yokoyama, S. Ogawa, S. Verma","doi":"10.1109/ICPST.2000.897094","DOIUrl":"https://doi.org/10.1109/ICPST.2000.897094","url":null,"abstract":"ASGM (adjustable speed generator/motor) can control active power and reactive power independently by the AC excitation. It can also change the rotor speed. Because of the above characteristics, ASGM can be applied to frequency converter, where two ASGMs are used. The rotor shaft of their ASGMs is common. Here, it is necessary to design a control system in order to adjust active power to the specified value quickly. The design for the active power control by using a multiple-state eigenvalue control algorithm is described in this paper, which considers the both states before and after power interchange. It is made clear from the digital dynamic simulation that the power interchange control proposed in this paper is effective.","PeriodicalId":330989,"journal":{"name":"PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127313441","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
A shunt active power filter with control method based on neural network 一种基于神经网络控制方法的并联有源电力滤波器
PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409) Pub Date : 2000-12-04 DOI: 10.1109/ICPST.2000.898215
Dawei Gao, Xiaorui Sun
{"title":"A shunt active power filter with control method based on neural network","authors":"Dawei Gao, Xiaorui Sun","doi":"10.1109/ICPST.2000.898215","DOIUrl":"https://doi.org/10.1109/ICPST.2000.898215","url":null,"abstract":"This paper presents a shunt active power filter with a control method based on neural networks. The objective of the active power filter is to eliminate harmonics, compensate power factor and correct unbalanced problems. The filter acts as a current source, which is connected in parallel with a nonlinear load and controlled to generate the required compensation currents. The control method of the active power filter is based on a neural network, extracting the fundamental sinusoid from the distorted load current waveform without harmfully phase shift due to adopting electronic bandpass filters, on the other hand, the circuit of this method is simple in structure, easy to adjust, adaptability to load currents, etc. The results of computer simulations and experiments are given, which can confirm the feasibility of the proposed active power filter.","PeriodicalId":330989,"journal":{"name":"PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126584197","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
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