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2012 Power Engineering and Automation Conference最新文献

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On-line monitoring system for icing state of overhead transmission line 架空输电线路结冰状态在线监测系统
2012 Power Engineering and Automation Conference Pub Date : 2012-09-01 DOI: 10.1109/PEAM.2012.6612546
Shiguang Nie, Guangyu Qu, H. Ye, Xiuchen Jiang
{"title":"On-line monitoring system for icing state of overhead transmission line","authors":"Shiguang Nie, Guangyu Qu, H. Ye, Xiuchen Jiang","doi":"10.1109/PEAM.2012.6612546","DOIUrl":"https://doi.org/10.1109/PEAM.2012.6612546","url":null,"abstract":"In this study, mechanical analysis was conducted on the icing load of transmission lines, and the calculation method for the icing thickness was discussed. The icing monitoring system has been developed, based on the measurement of some meteorological information, including wind speed and direction, temperature and humidity, etc and axial tension of overhead transmission line, two-dimensional obliquity. By using GSM/GPRS network, data transmission was achieved between conductor monitoring terminal and central master station. The icing status was analyzed by the expert system software of master station, using relevant theoretical models, so that the deicing information could be provided promptly and the ice harm accidents could also be prevented effectively.","PeriodicalId":130967,"journal":{"name":"2012 Power Engineering and Automation Conference","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121077222","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
An inexact fuzzy model for electric power generation systems planning 发电系统规划的不精确模糊模型
2012 Power Engineering and Automation Conference Pub Date : 2012-09-01 DOI: 10.1109/PEAM.2012.6612524
Q. Hu, G. Huang, Wei Li
{"title":"An inexact fuzzy model for electric power generation systems planning","authors":"Q. Hu, G. Huang, Wei Li","doi":"10.1109/PEAM.2012.6612524","DOIUrl":"https://doi.org/10.1109/PEAM.2012.6612524","url":null,"abstract":"In this study, a lower-side attainment values based inexact fuzzy programming (LA-IFP) approach is developed for supporting regional electric power generation systems (REPGS) planning under uncertainties. It can tackle uncertainties expressed as intervals, fuzzy sets as well as their combination in REPGS planning problems. Fuzzy relationships in the model can be transformed into corresponding deterministic ones without additional constraints. A hypothetical but representative REPGS is adopted to demonstrate its applicability. Reasonable energy supply, electricity generation, capacity expansion and emission mitigation plans are generated with minimized system costs.","PeriodicalId":130967,"journal":{"name":"2012 Power Engineering and Automation Conference","volume":"34 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123465793","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 zero sequence circulating current suppression based on virtual impedance 基于虚阻抗的零序循环电流抑制
2012 Power Engineering and Automation Conference Pub Date : 2012-09-01 DOI: 10.1109/PEAM.2012.6612520
Xu Tie-yan, Luo Yaohua
{"title":"The zero sequence circulating current suppression based on virtual impedance","authors":"Xu Tie-yan, Luo Yaohua","doi":"10.1109/PEAM.2012.6612520","DOIUrl":"https://doi.org/10.1109/PEAM.2012.6612520","url":null,"abstract":"There are zero sequence circuits, when inverters work in parallel directly, and zero sequence circulating current would flow, when zero sequence voltage of the inverter is different with that of the gird. The mechanism of the zero sequence circulating current is analyzed. By the analysis of the influence of the power switch tube voltage-drop, the dead time of PWM and the most common two PWM methods on the zero sequence voltage, the zero sequence voltage is a periodic signal the frequency of which is triple of the fundamental frequency. A novel zero sequence circulating current suppression method based on virtual impedance is proposed by the analysis of the zero sequence output impedance of the inverter, and the zero sequence voltage harmonic impedance is increased to improve the performance. The results of simulations and experiments show that the circulating current is suppressed effectively.","PeriodicalId":130967,"journal":{"name":"2012 Power Engineering and Automation Conference","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114423361","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
The development of new type intelligent high-power ultrasonic power supply 新型智能大功率超声电源的研制
2012 Power Engineering and Automation Conference Pub Date : 2012-09-01 DOI: 10.1109/PEAM.2012.6612443
Jianhua Nie, Jianguo Shen
{"title":"The development of new type intelligent high-power ultrasonic power supply","authors":"Jianhua Nie, Jianguo Shen","doi":"10.1109/PEAM.2012.6612443","DOIUrl":"https://doi.org/10.1109/PEAM.2012.6612443","url":null,"abstract":"Aiming at the needs in field of oil extraction operations, a high-power ultrasonic power supply was developed, and it can generate the power of 55kW and automatically match the inductance. TL494CN is utilized to produce square signal and realize the continuous adjustment within range of 15 kHz ~ 40 kHz with dead time for 3 microseconds. Produce modulation signal via NE555P to form square wave with interval, and modulate the signal produced by TL494CN as final control signal of the power supply. Automatic matching of inductance is realized via circuit composed by HEF4011BP, TC4013BP and direct current (DC) electromotor. Through field test, this ultrasonic power supply can realize the excitation of the highpower and meet its excitation requirements.","PeriodicalId":130967,"journal":{"name":"2012 Power Engineering and Automation Conference","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114597053","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
GA-based decentralized controller design for integrated flight/propulsion systems 基于遗传算法的飞行/推进系统分散控制器设计
2012 Power Engineering and Automation Conference Pub Date : 2012-09-01 DOI: 10.1109/PEAM.2012.6612523
Dai Jiyang, Huang Ying, Peng Chen
{"title":"GA-based decentralized controller design for integrated flight/propulsion systems","authors":"Dai Jiyang, Huang Ying, Peng Chen","doi":"10.1109/PEAM.2012.6612523","DOIUrl":"https://doi.org/10.1109/PEAM.2012.6612523","url":null,"abstract":"A new method is developed to deal with the problem that a decentralized integrated flight/propulsion control system needs to keep centralized control performance. The systematic procedure emphasizes quickly finding the decentralized subcontrollers that matching the closed-loop performance characteristics of the centralized controller, which is featured by the fact that GA is used to optimize the design of centralized H-infinity controller and decentralized engine subcontroller, and that only one interface variable needs to satisfy decentralized control requirement. The optimization design is motivated by the implementation issues where it is desirable to reduce the time in trial and error process and accurately find the best decentralized subcontrollers. The method is applied to decentralized control system design for a short take-off and landing fighter. Through comparing the simulation results of decentralized control system with those of centralized control system, the decentralized control system match the closed-loop command tracking and decoupling performance achieved by centralized control.","PeriodicalId":130967,"journal":{"name":"2012 Power Engineering and Automation Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129514154","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 study on influence of wind power on positive sequence voltage polarized impedance relay 风电对正序电压极化阻抗继电器影响的研究
2012 Power Engineering and Automation Conference Pub Date : 2012-09-01 DOI: 10.1109/PEAM.2012.6612485
Li Qin-hao, Zhang Yong-jun, Yuan Wei-peng, Liman Feng
{"title":"A study on influence of wind power on positive sequence voltage polarized impedance relay","authors":"Li Qin-hao, Zhang Yong-jun, Yuan Wei-peng, Liman Feng","doi":"10.1109/PEAM.2012.6612485","DOIUrl":"https://doi.org/10.1109/PEAM.2012.6612485","url":null,"abstract":"Wind power has made rapid progress in the last few years. However, large-scale wind power integration exerts negative influence to power system. One of the problems is that with the current supplied by wind farm feeder, relay protection may be of incorrect trip or miss trip. To study the influence of wind power on positive sequence voltage polarized impedance relay, this paper gives a mathematical analysis of the relay's operation equation. And a simulation of the integration of wind turbine driven doubly fed induction generator is accomplished by PSCAD software to verify the mathematical analysis. The results show that with integration of wind power, the protecting range of quick-break distance protection is extended and the operating time of distance protection with time limit may be delayed. Those conclusions provide theoretical basis for selection and setting of protection.","PeriodicalId":130967,"journal":{"name":"2012 Power Engineering and Automation Conference","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129694642","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
Unbalanced control system design for DFIG-based wind turbines 基于dfig的风力机不平衡控制系统设计
2012 Power Engineering and Automation Conference Pub Date : 2012-09-01 DOI: 10.1109/PEAM.2012.6612440
Shuying Yang, Long Zhan, Changxi Huang, Z. Xie
{"title":"Unbalanced control system design for DFIG-based wind turbines","authors":"Shuying Yang, Long Zhan, Changxi Huang, Z. Xie","doi":"10.1109/PEAM.2012.6612440","DOIUrl":"https://doi.org/10.1109/PEAM.2012.6612440","url":null,"abstract":"To achieve high performance operation of doubly fed induction generator (DFIG) based wind turbines under unbalanced voltage conditions, a well designed control system is important, otherwise wind turbines will take a risk of being cut out of the power grid. Meanwhile, without proper designed control the power ripples generated from wind turbines will further aggravate the power grid. Under unbalanced conditions, DFIG was modeled in dual synchronous reference frame (SRF), namely the positive one and the negative one, based on which the dual PI current controllers were designed. To implement the dual current control, the sensing variables were divided into positive and negative sequence components with the designed generalized filters, and then the corresponding control in positive and negative SRF were designed respectively. At the same time, to get the dual SRFs oriented to the positive and negative sequence voltage components, a notch filter based phase latch loop (PLL) control was designed. Experimental results on 11 kW DFIG wind turbine test bed validated the control system design.","PeriodicalId":130967,"journal":{"name":"2012 Power Engineering and Automation Conference","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124606330","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
Control scheme of a comprehensive power quality controller 一种综合电能质量控制器控制方案
2012 Power Engineering and Automation Conference Pub Date : 2012-09-01 DOI: 10.1109/PEAM.2012.6612425
Lei Kou, An Luo
{"title":"Control scheme of a comprehensive power quality controller","authors":"Lei Kou, An Luo","doi":"10.1109/PEAM.2012.6612425","DOIUrl":"https://doi.org/10.1109/PEAM.2012.6612425","url":null,"abstract":"A control strategy of the combined system for power distribution grid is proposed, which is composed of a resonant impedance type hybrid active power filter (RITHAF) and static var compensator (SVC). Based on the topology and operating principles, electric model of combined system is established. Then, its control scheme composed of specified harmonics detection and the neural cell generalized integrator PI control for RITHAF and fuzzy PI control for SVC is designed. The harmonic components of grid are detected by specified harmonics detection while the frequency dividing compensation for specified harmonics is implemented using neural-cell generalized integrator control. The fuzzy PI control adjusts the control parameters online in accordance with control error of power grid voltage and fuzzy rules, enhancing the response speed and control precision of reactive power control. With simple structure and good robustness, the proposed controller adjusts parameters adaptively to improve tracking performance. Finally, results of simulation demonstrate the feasibility and effectiveness of new control scheme.","PeriodicalId":130967,"journal":{"name":"2012 Power Engineering and Automation Conference","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129834666","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
Wireless ZigBee transceiver for smart meter reading system 用于智能抄表系统的无线ZigBee收发器
2012 Power Engineering and Automation Conference Pub Date : 2012-09-01 DOI: 10.1109/PEAM.2012.6612420
Cai Yuehong, Xiao Yong, Yan Xiao, Qin Kaiyu
{"title":"Wireless ZigBee transceiver for smart meter reading system","authors":"Cai Yuehong, Xiao Yong, Yan Xiao, Qin Kaiyu","doi":"10.1109/PEAM.2012.6612420","DOIUrl":"https://doi.org/10.1109/PEAM.2012.6612420","url":null,"abstract":"Long spectrum spreading chip sequences are proposed in this paper to reduce ZigBee system bit error rate (BER) and improve anti-noise performance of the system. The direct sequence spread spectrum (DSSS) and offset quadrature phase shift keying (OQPSK) modulation wireless transceiver system in compliance with ZigBee regulation and its anti-noise performance in the additive white Gauss noise (AWGN) channel and Rayleigh channel have been studied. Experiments show that 32 yards long spread spectrum communication system BER can be reduced to 1/23 compared with 16 yards long spread spectrum communication system when signal-to-noise ratio (SNR) is 6dB. In other words, the performance withstanding noise could be enhanced using long spectrum spreading chip sequences.","PeriodicalId":130967,"journal":{"name":"2012 Power Engineering and Automation Conference","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126819673","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
Modeling and simulation of a single-stage grid-connected photovoltaic system in PSCAD/EMTDC PSCAD/EMTDC单级并网光伏系统的建模与仿真
2012 Power Engineering and Automation Conference Pub Date : 2012-09-01 DOI: 10.1109/PEAM.2012.6612415
Pei Qing-lei, Wang Li-guo, Liu Li-li, Zhang Yi-gong, Liu Hai-jun
{"title":"Modeling and simulation of a single-stage grid-connected photovoltaic system in PSCAD/EMTDC","authors":"Pei Qing-lei, Wang Li-guo, Liu Li-li, Zhang Yi-gong, Liu Hai-jun","doi":"10.1109/PEAM.2012.6612415","DOIUrl":"https://doi.org/10.1109/PEAM.2012.6612415","url":null,"abstract":"This paper makes a detailed analysis of the modeling method for photovoltaic (PV) arrays, maximum power point tracking (MPPT) controller and the power controller in Singlestage grid-connected PV system (SSGCPS). The detailed model of PV arrays is established, the MPPT controller and the power controller are designed under PSCAD/EMTDC environment. At last, the electromagnetic transient model of a 100kW SSGCPS is completed. The simulation results show that the simulation models can reflect characteristics and functions of the actual physical device accurately and can be used to the design and research of big-power PV system.","PeriodicalId":130967,"journal":{"name":"2012 Power Engineering and Automation Conference","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127990866","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
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