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2010 International Conference on Power System Technology最新文献

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Design and simulation of UPFC for enhancement of power quality in transmission lines 用于提高输电线路电能质量的UPFC设计与仿真
2010 International Conference on Power System Technology Pub Date : 2010-12-13 DOI: 10.1109/POWERCON.2010.5666588
J. Faiz, G. Shahgholian, M. Torabiyan
{"title":"Design and simulation of UPFC for enhancement of power quality in transmission lines","authors":"J. Faiz, G. Shahgholian, M. Torabiyan","doi":"10.1109/POWERCON.2010.5666588","DOIUrl":"https://doi.org/10.1109/POWERCON.2010.5666588","url":null,"abstract":"Growth of electrical energy consumptions and increasing non-linear loads in power systems force the electrical power utilities to provide a high quality electrical power. This is the reason that this issue is getting more and more importance in power systems. This paper examines all power quality paramete-rs based on the standard. In order to enhance the power quality, these parameters must be improved; to do so a compound compensator UPFC is designed and its performance is simulated for electrical power transmission lines. To verify the results of application of the above-mentioned method, they are compared with the corresponding results obtained by PSCAD/EMTDC software.","PeriodicalId":169553,"journal":{"name":"2010 International Conference on Power System Technology","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133184789","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: 27
Operational tests on thyristor valves for Ningdong-Shandong ±660kV UHVDC project 宁鲁±660kV特高压直流工程晶闸管阀运行试验
2010 International Conference on Power System Technology Pub Date : 2010-12-13 DOI: 10.1109/POWERCON.2010.5666020
G. Tang, K. Zha, J. Wen, C. Gao, X.G. Zhang, G. Wang, David Jackson, J.Z. Cao
{"title":"Operational tests on thyristor valves for Ningdong-Shandong ±660kV UHVDC project","authors":"G. Tang, K. Zha, J. Wen, C. Gao, X.G. Zhang, G. Wang, David Jackson, J.Z. Cao","doi":"10.1109/POWERCON.2010.5666020","DOIUrl":"https://doi.org/10.1109/POWERCON.2010.5666020","url":null,"abstract":"For purchasing more efficiency, more power transmission capacity, UHVDC projects are employed in the gird of China. Thyristor valves, as one of the key equipments, must pass the operational tests in order to make sure the valve design is proper. In coordinate with IEC60700-1 standards and based on thorough investigation and comparison of exiting operational test circuits, a new operational tests circuit is developed and applied in the Ningdong-Shandong ±660kV UHVDC project. In this paper, the topology and working principle of the test circuit are introduced. Then test parameters and results are presented, showing that development of thyristor valves for Ningdong-Shandong UHVDC project is successful.","PeriodicalId":169553,"journal":{"name":"2010 International Conference on Power System Technology","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133231930","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
Simulation study on Low Voltage Ride Through ability of DFIG wind turbines DFIG风力发电机低压穿越能力仿真研究
2010 International Conference on Power System Technology Pub Date : 2010-12-13 DOI: 10.1109/POWERCON.2010.5666560
Li Zhang, Ruiming Wang, Qing Li, Weisheng Wang
{"title":"Simulation study on Low Voltage Ride Through ability of DFIG wind turbines","authors":"Li Zhang, Ruiming Wang, Qing Li, Weisheng Wang","doi":"10.1109/POWERCON.2010.5666560","DOIUrl":"https://doi.org/10.1109/POWERCON.2010.5666560","url":null,"abstract":"In this paper, Low Voltage Ride Through behavior of vector-controlled DFIG wind turbine is studied and the modeling method and simulation result are presented. Now many grid codes require wind turbines keep connected during grid fault and provide reactive current when needed. To enable wind turbines ride through grid fault special protection measures have to be implemented. Usually a circuit usually called as crowbar is used to limit the over current in rotor circuit and overvoltage in DC-link. The behavior of the DFIG turbine during grid fault is simulated using PSCAD/EMTDC software.","PeriodicalId":169553,"journal":{"name":"2010 International Conference on Power System Technology","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133773985","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
An improved distribution network reliability analysis algorithm considering complex load transfer and scheduled outage 一种考虑复杂负荷转移和计划停电的配电网可靠性分析改进算法
2010 International Conference on Power System Technology Pub Date : 2010-12-13 DOI: 10.1109/POWERCON.2010.5666370
Shengmin Qiu, L. Guan, Haohao Wang
{"title":"An improved distribution network reliability analysis algorithm considering complex load transfer and scheduled outage","authors":"Shengmin Qiu, L. Guan, Haohao Wang","doi":"10.1109/POWERCON.2010.5666370","DOIUrl":"https://doi.org/10.1109/POWERCON.2010.5666370","url":null,"abstract":"In this paper, an improved reliability analysis algorithm is proposed which considers the influence of the scheduled outage. It establishes the basic parameters and mathematical models of the scheduled outage. And the scheduled outage calculation formula is also given. And a new scheme to evaluate whether a user can be transferred to interconnected feeders considering the capacity constraints is designed. A load transfer judgement algorithm which make the reliability assessment more exact is proposed. In the end of the paper, the reliability analysis results of the proposed algorithm in two test systems are compared with the results of several reported algorithms to prove its correctness. Then the algorithm is applied to an actual large-scale distribution system which further testifies the efficiency and good performance of the algorithm.","PeriodicalId":169553,"journal":{"name":"2010 International Conference on Power System Technology","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134350103","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
Fuzzy based day ahead prediction of electric load using Mahalanobis distance 基于马氏距离的电力负荷日前模糊预测
2010 International Conference on Power System Technology Pub Date : 2010-12-13 DOI: 10.1109/POWERCON.2010.5666628
Amit Jain, E. Srinivas, S. K. Kukkadapu
{"title":"Fuzzy based day ahead prediction of electric load using Mahalanobis distance","authors":"Amit Jain, E. Srinivas, S. K. Kukkadapu","doi":"10.1109/POWERCON.2010.5666628","DOIUrl":"https://doi.org/10.1109/POWERCON.2010.5666628","url":null,"abstract":"Prediction of electric load is very important issue for modern day power system engineers and a very good day ahead prediction of electric load is required for efficient performance of various Energy Management System (EMS) functions such as unit commitment, economic dispatch, fuel scheduling, and unit maintenance. A fuzzy based approach for day ahead prediction of electric load using Mahalanobis distance has been chosen in this work. Mahalanobis distance provides the similar characteristic days from the historical data set based on some independent variables generally of climate and time (such as temperature, day of the week, month etc.) and that are used to predict the dependent variable, i.e., day ahead electric load demand. The independent variables considered for the distance measure include the hourly humidity values, hourly temperatures values, and the day type variable. The similarity between the load on the day of prediction and that on similar characteristic days, which is evaluated using fuzzy system.","PeriodicalId":169553,"journal":{"name":"2010 International Conference on Power System Technology","volume":"101 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114025443","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
Vector evaluated adaptive immune particle swarm optimization algorithm for multi-objective reactive power optimization 矢量评估自适应免疫粒子群算法用于多目标无功优化
2010 International Conference on Power System Technology Pub Date : 2010-12-13 DOI: 10.1109/POWERCON.2010.5666529
Juan Li, Lin Yang, Jinlong Liu, Delong Yang, Chen Zhang
{"title":"Vector evaluated adaptive immune particle swarm optimization algorithm for multi-objective reactive power optimization","authors":"Juan Li, Lin Yang, Jinlong Liu, Delong Yang, Chen Zhang","doi":"10.1109/POWERCON.2010.5666529","DOIUrl":"https://doi.org/10.1109/POWERCON.2010.5666529","url":null,"abstract":"To solve the power system multi-objective reactive power optimization problem better, the shortcomings of the current multi-objective reactive power optimization were analyzed. The vector evaluated adaptive immune particle swarm optimization (VEAIPSO) algorithm based on evaluation vector is applied to multi-objective reactive power optimization in this paper which provides an effective method for solving the problem. Some conventional running models of reactive power optimization were analyzed. The improvement of the system static voltage stability margin was used as the one of the optimized objectives, and the minimum Jacobian matrix eigenvalue of the convergence trend was used as a voltage static stability scale. The multi-objective reactive power optimization model was established, its objective function contains reducing network power loss, improving the load node voltage level and increasing the static voltage stability margin. The operation simulation in this paper was done by simulation software MATLAB.","PeriodicalId":169553,"journal":{"name":"2010 International Conference on Power System Technology","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115686970","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: 6
Framework of Smart grid 智能电网框架
2010 International Conference on Power System Technology Pub Date : 2010-12-13 DOI: 10.1109/POWERCON.2010.5666429
Jin-Lei Hu
{"title":"Framework of Smart grid","authors":"Jin-Lei Hu","doi":"10.1109/POWERCON.2010.5666429","DOIUrl":"https://doi.org/10.1109/POWERCON.2010.5666429","url":null,"abstract":"Distributed generation is a clean and renewable alternative to or enhancement of traditional large-scale centralized generation to improve energy efficiency and reduce CO2 greenhouse gas emissions. Smart appliances at factories or homes can be switched off at peak hours and on when power is less expensive. They act as peak curtailment and can lessen peak demand surges during the day so that less energy is wasted in order to ensure adequate reserves. All these new technologies, on both generation and demand sides, have environmental and economical benefits, but also need more complicated electricity network, the bridge in between, to connect and maintain them together. Smart grid is a major solution to modernize current electricity network to facilitate connecting distributed energy resources (DER) and smart appliances with electrical power grid. The information integration solutions (IIS) which integrates and upgrades the presently separate functionalities of EMS, DMS, OMS, and GIS, is one of the key technologies of smart grid. Smart grid will bring huge benefits to both power utility industry and customer.","PeriodicalId":169553,"journal":{"name":"2010 International Conference on Power System Technology","volume":"82 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114109548","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 generating mechanism and optimal control of power quality in micro-grids 微电网电能质量的产生机理及最优控制
2010 International Conference on Power System Technology Pub Date : 2010-12-13 DOI: 10.1109/POWERCON.2010.5666657
Xi Li, Zhongqiu Wang, Gengyin Li, Ming Zhou, K. Lo
{"title":"The generating mechanism and optimal control of power quality in micro-grids","authors":"Xi Li, Zhongqiu Wang, Gengyin Li, Ming Zhou, K. Lo","doi":"10.1109/POWERCON.2010.5666657","DOIUrl":"https://doi.org/10.1109/POWERCON.2010.5666657","url":null,"abstract":"As an important component of distribution network, micro-grid is the necessarily development trend for future. Micro-grid has greatly improved the random problems of distributed generation (DG). However, DGs, the power electronic equipments inevitably bring about power quality problems, especially voltage flicker and harmonics. This paper tries to study the operating regulations of micro-grid in order to find out the generating mechanism and propagation characteristic of power quality problems. Taking the photovoltaic (PV) system for an example, the micro-grid simulation model has been set up. The experiments show that an appropriate control strategy coordinating every part can improve the power quality of micro-grid greatly. This paper finds out the factors affecting power quality and their harm degrees, explaining the reasons of power quality problems. Coordinating every unit, this paper set up an optimal control strategy and proper parameter settings, trying to improve power quality of micro-grid to the largest extent.","PeriodicalId":169553,"journal":{"name":"2010 International Conference on Power System Technology","volume":"180 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114163220","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
Research on the impact of large-scale integrated wind farms on the security and stability of regional power system 大型综合风电场对区域电力系统安全稳定的影响研究
2010 International Conference on Power System Technology Pub Date : 2010-12-13 DOI: 10.1109/POWERCON.2010.5666689
M. Ma, Y. Liu, D. Zhao
{"title":"Research on the impact of large-scale integrated wind farms on the security and stability of regional power system","authors":"M. Ma, Y. Liu, D. Zhao","doi":"10.1109/POWERCON.2010.5666689","DOIUrl":"https://doi.org/10.1109/POWERCON.2010.5666689","url":null,"abstract":"The randomness of nature resource and the particularity of generation technology of wind power generation are important factors for restricting further utilization of the wind resource. This paper analyzes the impacts of grid connected wind farms on the regional power system security and stability through the research on the regional grid with large scale wind power integration. Through simulation method, this paper analyzed the impacts of the integrated wind farms on the bus voltage, reactive power compensation, power flow distribution, network loss, etc; the impact of dynamic characteristics of wind turbines on the grid transient voltage and power system frequency stability are investigated, and the significance of wind turbines low voltage ride through (LVRT) capability to power system security and stability is emphatically analyzed, measures for improving power system transient voltage characteristic are proposed, and their effectiveness on the power gird construction as well as safe and stable operation is validated.","PeriodicalId":169553,"journal":{"name":"2010 International Conference on Power System Technology","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114877203","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: 22
Infrared absorption properties analysis of dissolved gases in transformer oil 变压器油中溶解气体的红外吸收特性分析
2010 International Conference on Power System Technology Pub Date : 2010-12-13 DOI: 10.1109/POWERCON.2010.5666415
Y. Yun, X. Zhao, X. Li
{"title":"Infrared absorption properties analysis of dissolved gases in transformer oil","authors":"Y. Yun, X. Zhao, X. Li","doi":"10.1109/POWERCON.2010.5666415","DOIUrl":"https://doi.org/10.1109/POWERCON.2010.5666415","url":null,"abstract":"Infrared absorption properties of fault gases are the theoretical bases of qualitative and quantitative analysis of dissolved gases in transformer oil by infrared optical methods. This paper proposed a method that can calculate gaseous infrared absorption spectrum at a given pressure or temperature. Using spectroscopic parameters found in the HITRAN2004 database, the infrared absorption properties of CH<inf>4</inf>, C<inf>2</inf>H<inf>6</inf>, C<inf>2</inf>H<inf>4</inf>, C<inf>2</inf>H<inf>2</inf>, CO, CO<inf>2</inf> and H<inf>2</inf>O were researched by the method. The infrared spectra of these gases in the spectral region of 500∼4000cm<sup>−1</sup> were given. And the laws that the peak absorption coefficient and full width at half maximum value (FWHM) of an absorption line vary with pressure and temperature were also analyzed. Calculation and analysis results are particularly useful for the online and offline detection of dissolved gases in transformer oil by infrared optical methods such as Fourier transform infrared spectrometry and photoacoustic spectrometry.","PeriodicalId":169553,"journal":{"name":"2010 International Conference on Power System Technology","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116876863","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
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