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2010 International Conference on Power System Technology最新文献

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Smart re-close scheme of combined overhead line with underground power cable 架空线与地下电力电缆组合的智能复合闸方案
2010 International Conference on Power System Technology Pub Date : 2010-12-13 DOI: 10.1109/POWERCON.2010.5666369
Zhentao Xin, Lei Wang, Hongyan Jiang, Baodong Chai, Jun Yang
{"title":"Smart re-close scheme of combined overhead line with underground power cable","authors":"Zhentao Xin, Lei Wang, Hongyan Jiang, Baodong Chai, Jun Yang","doi":"10.1109/POWERCON.2010.5666369","DOIUrl":"https://doi.org/10.1109/POWERCON.2010.5666369","url":null,"abstract":"Re-close scheme of transmission lines has been researched for many years, with the fast development of cities, more and more combined distribution lines composed of transmission line and cables are applied into electrical power network. A new smart re-close scheme of combined distribution transmission lines is put forward. The scheme comprehensively applies inferred voltage module and traveling wave method, can precisely locate the fault location, and then give a correct re-close operation.","PeriodicalId":169553,"journal":{"name":"2010 International Conference on Power System Technology","volume":"12 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":"126715019","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: 11
Study on decomposition gas for faults diagnostic of electrical equipment using fluorocarbons 氟碳电气设备故障诊断分解气体的研究
2010 International Conference on Power System Technology Pub Date : 2010-12-13 DOI: 10.1109/POWERCON.2010.5666387
Kang Li, Weijun Xing, Guoqiang Zhang, Wenhao Niu, Xin Wang, Yingying Wang
{"title":"Study on decomposition gas for faults diagnostic of electrical equipment using fluorocarbons","authors":"Kang Li, Weijun Xing, Guoqiang Zhang, Wenhao Niu, Xin Wang, Yingying Wang","doi":"10.1109/POWERCON.2010.5666387","DOIUrl":"https://doi.org/10.1109/POWERCON.2010.5666387","url":null,"abstract":"As the increasing demand for large capacity, high voltage and high reliability power transformers in urban power grid, oil-free, non-flammable and non-explosive equipment is recommended. For this reason, evaporative cooling transformers, gas insulated transformers and other electrical equipment using fluorocarbon as coolant and dielectric have been developed. This paper presents an experimental survey of the main components of decomposition products generated by several faults of electrical equipment using fluorocarbon; here evaporative cooling transformer and gas insulated transformer are taken as example. All experimental studies are carried out by simplified testing setups. The gaseous decomposition products formed during the tests are analyzed and assayed by means of GC/MS (gas chromatography/mass spectrometry) method. The amount of decomposition products varied with temperature, time and discharge capacity are studied. Based on these results, criterions for judging the fault type of this kind equipment is suggested, and it could be helpfulness to develop a diagnostic method for the new electrical equipment using fluorocarbon.","PeriodicalId":169553,"journal":{"name":"2010 International Conference on Power System Technology","volume":"83 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":"116399227","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
A forecasting system of electric price using the refined Back propagation Neural Network 基于改进的反向传播神经网络的电价预测系统
2010 International Conference on Power System Technology Pub Date : 2010-12-13 DOI: 10.1109/POWERCON.2010.5666458
Ming-Tang Tsai, C. Chen
{"title":"A forecasting system of electric price using the refined Back propagation Neural Network","authors":"Ming-Tang Tsai, C. Chen","doi":"10.1109/POWERCON.2010.5666458","DOIUrl":"https://doi.org/10.1109/POWERCON.2010.5666458","url":null,"abstract":"This paper proposed a forecasting system of electric price for participants to quickly and accurately predict the electric price for avoiding the risk due to the electricity price volatility. Based on the Back-propagation Neural Network(BPN) and Orthogonal Experimental Design(OED), a Refined BPN (RBPN) is constructed in the searching process. The data cluster, including Locational Marginal Price(LMP), system load, temperature, line-flow, are first collected and embedded in the Excel Database. In order to get a better solution, the OED is used to automatically regulate the parameters during the RBPN training process. Linking the RBPN and Excel database, the RBPN retrieved the input data from Excel Database to perform and analyze the efficiency and accuracy of the predicting system until the forecasting system is convergent. Simulation results will provide the participants to obtain the maximal profits and raise its ability of market's competition in a price volatility environment.","PeriodicalId":169553,"journal":{"name":"2010 International Conference on Power System Technology","volume":"51 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":"122693099","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
A scheme of connecting microgird to AC grid via flexible power electronics interface 一种利用柔性电力电子接口连接微电网与交流电网的方案
2010 International Conference on Power System Technology Pub Date : 2010-12-13 DOI: 10.1109/POWERCON.2010.5666742
Wei Yue, Chengyong Zhao, Yi Lu, Gang Li
{"title":"A scheme of connecting microgird to AC grid via flexible power electronics interface","authors":"Wei Yue, Chengyong Zhao, Yi Lu, Gang Li","doi":"10.1109/POWERCON.2010.5666742","DOIUrl":"https://doi.org/10.1109/POWERCON.2010.5666742","url":null,"abstract":"Based on the synthetic control of microgrid, a flexible power electronics interface is developed in this paper. Considering distributed generation types and storage devices, different control strategies are adopted in controller design for different distributed generation units. The interface comprises a couple of back-to-back VSC converters, and exports variable active power and reactive power in order to maintain the power balance inside the microgrid. Apparently, the interface separates the microgird from the AC grid, prevent harmonic component transmitting from one side to the other side and control the active power precisely flowing between microgrid and main grid. Besides, it's also in charge of reactive power compensation and keeping the microgrid voltage stable. Simulation results can approve its superiority and validity comparing with direct connection.","PeriodicalId":169553,"journal":{"name":"2010 International Conference on Power System Technology","volume":"323 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":"122780245","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
Modeling and simulation of anode-supported planar intermediate temperature solid oxide fuel cell for integrated gasification fuel cell application 面向集成气化燃料电池的阳极支撑平面中温固体氧化物燃料电池建模与仿真
2010 International Conference on Power System Technology Pub Date : 2010-12-13 DOI: 10.1109/POWERCON.2010.5666656
Lu-ning Xu, Li Han, Z. Dong
{"title":"Modeling and simulation of anode-supported planar intermediate temperature solid oxide fuel cell for integrated gasification fuel cell application","authors":"Lu-ning Xu, Li Han, Z. Dong","doi":"10.1109/POWERCON.2010.5666656","DOIUrl":"https://doi.org/10.1109/POWERCON.2010.5666656","url":null,"abstract":"The capability of exploiting various fuels is one of the advantages of solid oxide fuel cells (SOFC) on stationary power application, and also a promising solution for using coal through the integrated gasification fuel cell (IGFC) application when combined with a proper coal gasifier and gas reformer. Recently, the anode supported planar SOFC becomes a promising candidate for SOFC commercialization due to its higher power density and lower operation temperature. In the work, SOFC and commercially available coal gasifiers and reformer are modeled in MATLAB. The fuel cell and reformer models are built using electrochemical and reaction kinetics equations with empirical data determined parameters using literature data. The integrated semi-empirical IGFC model and simulation guide the selection of appropriate coal gasifier and reformer for a given SOFC in IGFC application. Tests have been done using two different and representative gasifiers with different syngas to fuel the SOFC, to demonstrate the performance difference and the method for identify the best SOFC, gasifier-reformer match. Simulation results showed good consistency with literature data. The work contributes new integrated coal gasification and SOFC system development for improved energy efficiency and emission reduction.","PeriodicalId":169553,"journal":{"name":"2010 International Conference on Power System Technology","volume":"37 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":"123022497","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
The Xiangjiaba-Shanghai 800 kV UHVDC project, status and special aspects 向家—上海800千伏特高压直流工程的现状及特点
2010 International Conference on Power System Technology Pub Date : 2010-12-13 DOI: 10.1109/POWERCON.2010.5666671
U. Astrom, V. Lescale, D. Menzies, Mao Weimin, Li Zehong
{"title":"The Xiangjiaba-Shanghai 800 kV UHVDC project, status and special aspects","authors":"U. Astrom, V. Lescale, D. Menzies, Mao Weimin, Li Zehong","doi":"10.1109/POWERCON.2010.5666671","DOIUrl":"https://doi.org/10.1109/POWERCON.2010.5666671","url":null,"abstract":"This paper presents the current status of the 800 kV UHVDC technology and presents how experience and confidence gained at an 800 kV long term test station is being utilized in executing the 800 kV UHVDC long distance bulk power transmission Xiangjiaba - Shanghai.","PeriodicalId":169553,"journal":{"name":"2010 International Conference on Power System Technology","volume":"52 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":"122143505","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
Research on increasing cable current-rating by pumping thermal material into pipes 向管道内泵入热材料提高电缆额定电流的研究
2010 International Conference on Power System Technology Pub Date : 2010-12-13 DOI: 10.1109/POWERCON.2010.5666443
Zheng Liang-hua, Lu Zhi-wei, Mao Weiping, Yu Jian-li
{"title":"Research on increasing cable current-rating by pumping thermal material into pipes","authors":"Zheng Liang-hua, Lu Zhi-wei, Mao Weiping, Yu Jian-li","doi":"10.1109/POWERCON.2010.5666443","DOIUrl":"https://doi.org/10.1109/POWERCON.2010.5666443","url":null,"abstract":"Because the air thermal resistance is high, the current-rating of underground cables in pipes are much lower than the current-rating of direct buried cables. In order to improve the cable current carrying capacities, thermal material is pumped into pipes to improve the situation of duct heat output. Based on the combinatorial coordinates, a complex computer program employing the finite difference method is developed to calculate the temperature field distributions and current-rating of underground cables in pipes. The calculating results are consistent with results obtained by simulation test and field test. Current-rating influenced by pumping thermal material into pipes from three single conductors to eighteen single conductors are studied. The results reveal that the current-rating of three single conductors can be improved about 5.6% or the temperature of cable cores can be reduced about 7°C for the same circulating current by pumping thermal material into pipes. When six or more cables are laid one another, their current carrying current-rating improved by pumping thermal material into pipes is obviously reduced by the mutual heating effect. The current-rating of the cable can be improved and operation temperature of cable cores can be reduced by pumping thermal material into pipes","PeriodicalId":169553,"journal":{"name":"2010 International Conference on Power System Technology","volume":"1 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":"129715677","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 droop control method of microsources based on divided self-adjusting slope coefficient 基于分段自调节斜率系数的微源下垂控制方法
2010 International Conference on Power System Technology Pub Date : 2010-12-13 DOI: 10.1109/POWERCON.2010.5666148
Peng Li, Wei Wang, Xilei Yang, Shuai Wang, Hongfen Cui, Changzheng Gao
{"title":"A droop control method of microsources based on divided self-adjusting slope coefficient","authors":"Peng Li, Wei Wang, Xilei Yang, Shuai Wang, Hongfen Cui, Changzheng Gao","doi":"10.1109/POWERCON.2010.5666148","DOIUrl":"https://doi.org/10.1109/POWERCON.2010.5666148","url":null,"abstract":"Microgrid, as a new effective way for large scale new energy and renewable energy power generation systems connected to the grid, injects new vigor into the power system. Focusing on the characteristics of P-f (active power versus frequency) droop and Q-V (reactive power versus voltage) droop, on the basis of analyzing the variable slope coefficient of droop characteristic, a droop control method of microsources based on divided self-adjusting slope coefficient is proposed in this paper. By calculating the quantity of the load fluctuation, this control method dynamically adjusts the active and reactive power maximums of inverters in the range of the inverter ratings to change the slope coefficients of droop curves. The aim of this method is to decrease the deviation of the frequency and voltage magnitude of the microgrid bus effectively. The simulation result verifies the correctness and feasibility of this control method.","PeriodicalId":169553,"journal":{"name":"2010 International Conference on Power System Technology","volume":"1 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":"128441516","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: 13
Research on the control techniques of motor drive for SF6 high voltage circuit breaker SF6高压断路器电机驱动控制技术研究
2010 International Conference on Power System Technology Pub Date : 2010-12-13 DOI: 10.1109/POWERCON.2010.5666137
Yulong Huang, Dawei Li, Tao Yang, Jingjun Wang, Guozheng Xu
{"title":"Research on the control techniques of motor drive for SF6 high voltage circuit breaker","authors":"Yulong Huang, Dawei Li, Tao Yang, Jingjun Wang, Guozheng Xu","doi":"10.1109/POWERCON.2010.5666137","DOIUrl":"https://doi.org/10.1109/POWERCON.2010.5666137","url":null,"abstract":"This paper investigated a new type of operating mechanism in which the high voltage circuit breaker (HVCB) is driven by a permanent magnet synchronous motor (PMSM). This type of mechanism has high reliability due to its simple mechani-cal structure. In addition, the operating process of the mechanism is controllable. In this paper, the control technique of PMSM was introduced. A simulation model of the motor control system was established in MATLAB/Simulink. A hardware system, which consists of a breaker, a PMSM and its control device based on TMS320F2812 DSP, was built to test the motor drive mechanism. A total digital position servo system was established by imple-menting the vector control algorithm in the DSP controller. The travel curve of the breaker could be controlled by controlling the movement of the motor. The simulations and tests indicated that the motion of the HVCB is well controlled and the motor drive mechanism can meet the requirements for opening and closing operation of HVCB.","PeriodicalId":169553,"journal":{"name":"2010 International Conference on Power System Technology","volume":"48 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":"128760014","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
HHT based single terminal traveling wave fault location for lines combined with overhead-lines and cables 基于HHT的架空电缆复合线路单端行波故障定位
2010 International Conference on Power System Technology Pub Date : 2010-12-13 DOI: 10.1109/POWERCON.2010.5666565
Wang Yang, Zeng Xiangjun, Qin Xiaoan, Zhao Zhenfeng, Pan Hui
{"title":"HHT based single terminal traveling wave fault location for lines combined with overhead-lines and cables","authors":"Wang Yang, Zeng Xiangjun, Qin Xiaoan, Zhao Zhenfeng, Pan Hui","doi":"10.1109/POWERCON.2010.5666565","DOIUrl":"https://doi.org/10.1109/POWERCON.2010.5666565","url":null,"abstract":"Power distribution network usually have many overhead-lines and cables, fault location for lines mixed with overhead line and cable is very important. The framework of distributed line is radical, so the method of single terminal fault location is necessary. But, if the traditional power cable fault location method is applied to power cable and overhead line power network, the accuracy of fault location will be affected by the following two questions. Firstly, traveling wave generated by fault will produce reflection and refraction in the power cables and overhead lines connected nodes and this process of reflection and refraction is very complex, as a result traveling wave crest is difficult to detect; secondly,the reflection wave from fault point is difficult to distinguish. In order to solve this problem, a method of a HHT based single terminal traveling wave fault location for lines combined with overhead-lines and cables is proposed in the paper.","PeriodicalId":169553,"journal":{"name":"2010 International Conference on Power System Technology","volume":"1 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":"129012424","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: 11
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