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Conference Record 2009 IEEE Industrial & Commercial Power Systems Technical Conference最新文献

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Lessons learned from generator tripping events at industrial facilities 从工业设施发电机跳闸事件中吸取的教训
Conference Record 2009 IEEE Industrial & Commercial Power Systems Technical Conference Pub Date : 2009-06-21 DOI: 10.1109/PAPCON.2009.5185422
C. Mozina
{"title":"Lessons learned from generator tripping events at industrial facilities","authors":"C. Mozina","doi":"10.1109/PAPCON.2009.5185422","DOIUrl":"https://doi.org/10.1109/PAPCON.2009.5185422","url":null,"abstract":"This paper relates a number of generator tripping events that occurred within industrial plants in the hope that the “lessons learned” will help others avoid the events described. In many cases, these failures involved human errors and could have been avoided with proper generator protection or personnel training. In a number of cases, plant operators contributed or caused the events. These events were captured on oscillographs. The paper discusses the subtleties of analyzing generator non-fault events such as loss-of-field as well as the important role that sequence of event and oscillographic records play in analyzing these events. The paper also discusses the need to change the established practice of low-resistance grounding (200–400 A) of medium voltage industrial generators. In-service failures indicate the need to limit generator ground current to much lower levels to avoid catastrophic damage. The use of hybrid generator grounding is proposed as a solution to this problem.","PeriodicalId":241744,"journal":{"name":"Conference Record 2009 IEEE Industrial & Commercial Power Systems Technical Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115616730","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 2008 revision of IEEE C37.2 Standard for Electrical Power System Device Function Numbers, Acronyms, and Contact Designations 2008年修订的IEEE C37.2电力系统设备功能编号、缩写词和触点名称标准
Conference Record 2009 IEEE Industrial & Commercial Power Systems Technical Conference Pub Date : 2009-05-27 DOI: 10.1109/CPRE.2009.4982502
J. Tengdin
{"title":"The 2008 revision of IEEE C37.2 Standard for Electrical Power System Device Function Numbers, Acronyms, and Contact Designations","authors":"J. Tengdin","doi":"10.1109/CPRE.2009.4982502","DOIUrl":"https://doi.org/10.1109/CPRE.2009.4982502","url":null,"abstract":"This paper describes the experiences when revising and updating a key IEEE Standard for Electrical Power System Device Function Numbers, Acronyms and Contact Designations. The paper cites the historical evolution of this Standard, dating back to 1928. The wide utilization of modern, multi-function, relays and many new functions made clear the need to update the 1996 verison of this standad. Also, the interweaving of communication facilities into protection and control requirements had to be addressed from function and designation points of view. The paper demonstrates the importance of involvement of IEEE members in the Standards and the need for continuing input from these members to ensure relevance to the present applications, coherence and compatibility with other industry standards and practices.","PeriodicalId":241744,"journal":{"name":"Conference Record 2009 IEEE Industrial & Commercial Power Systems Technical Conference","volume":"240 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122516898","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
Analysis of commutation torque ripple using different PWM modes in BLDC motors 不同PWM模式下无刷直流电机换相转矩脉动分析
Conference Record 2009 IEEE Industrial & Commercial Power Systems Technical Conference Pub Date : 2009-05-03 DOI: 10.1109/ICPS.2009.5463966
H. Chuang, Y. Ke, Y. Chuang
{"title":"Analysis of commutation torque ripple using different PWM modes in BLDC motors","authors":"H. Chuang, Y. Ke, Y. Chuang","doi":"10.1109/ICPS.2009.5463966","DOIUrl":"https://doi.org/10.1109/ICPS.2009.5463966","url":null,"abstract":"Torque ripple generated in the commutation interval is one of the main drawbacks of Brushless DC (BLDC) motors. This paper presents an comprehensive analysis on the generated torque ripples of trapezoidal back-EMF due to phase commutation in the six switch, three-phase inverter brushless dc motor drives. Experimental results verify the amplitude of the torque ripple under 4 kinds of PWM pattern, respectively.","PeriodicalId":241744,"journal":{"name":"Conference Record 2009 IEEE Industrial & Commercial Power Systems Technical Conference","volume":"3 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121011273","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: 55
Concrete encapsulated electrodes 混凝土封装电极
Conference Record 2009 IEEE Industrial & Commercial Power Systems Technical Conference Pub Date : 2009-05-03 DOI: 10.1109/ICPS.2009.5463977
T. Baldwin, R. Rifaat, S. M. Malik
{"title":"Concrete encapsulated electrodes","authors":"T. Baldwin, R. Rifaat, S. M. Malik","doi":"10.1109/ICPS.2009.5463977","DOIUrl":"https://doi.org/10.1109/ICPS.2009.5463977","url":null,"abstract":"Concrete encapsulated electrodes have been in use for over 40 years, and in general have been found to be an effective and safe component in grounding systems of industrial and commercial power systems as well as in lightning protection systems. As a current conducting medium, concrete is a fair conductor, similar to many moist soils. Concrete's ability to quickly absorb moisture and release it slowly over a long period of time makes the electrode implementation practical, especially for dry locations. The alkalinity properties of concrete and the release of moisture and salts enhance the conductivity of the surrounding soil.","PeriodicalId":241744,"journal":{"name":"Conference Record 2009 IEEE Industrial & Commercial Power Systems Technical Conference","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124931021","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
A closer look at the grounding of shore-to-ship power supply system 近距离观察岸船供电系统接地
Conference Record 2009 IEEE Industrial & Commercial Power Systems Technical Conference Pub Date : 2009-05-03 DOI: 10.1109/ICPS.2009.5463939
P. E. Paul, P. Chavdarian
{"title":"A closer look at the grounding of shore-to-ship power supply system","authors":"P. E. Paul, P. Chavdarian","doi":"10.1109/ICPS.2009.5463939","DOIUrl":"https://doi.org/10.1109/ICPS.2009.5463939","url":null,"abstract":"To minimize the pollution that ships generate at ports, major ports all over the world are facing the challenge of upgrading their shore power infrastructure in order to make the provisions for shore-to-ship power supply systems. This process of supplying shore power to ships while turning off their on-board generators during berthing is called cold ironing. At present, there are no industry standards or recommended guidelines for cold ironing power system grounding design. Ship power is such that it requires a medium voltage power system with multiple parallel feeds, power plugs, receptacle assemblies and a flexible cable management system. This paper establishes the technical basis for designing a resistance grounding method for a cold ironing project, which would provide protection for both the operator and equipment in case of a ground fault anywhere in the system. A discussion of homo-polar grounding system for the ship's on-board power system is included. A system grounding design method to minimize stray current through the ship hull is presented. This paper intends to provide technical input for the new IEEE Draft Standard P1713 on Cold Ironing [1]","PeriodicalId":241744,"journal":{"name":"Conference Record 2009 IEEE Industrial & Commercial Power Systems Technical Conference","volume":"521 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116195271","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
Enabling customer demand and budget management in the real-time pricing environment 在实时定价环境中实现客户需求和预算管理
Conference Record 2009 IEEE Industrial & Commercial Power Systems Technical Conference Pub Date : 2009-05-03 DOI: 10.1109/ICPS.2009.5463965
S. Tiptipakorn, Weijen Lee, Li Wang
{"title":"Enabling customer demand and budget management in the real-time pricing environment","authors":"S. Tiptipakorn, Weijen Lee, Li Wang","doi":"10.1109/ICPS.2009.5463965","DOIUrl":"https://doi.org/10.1109/ICPS.2009.5463965","url":null,"abstract":"Traditionally, most end-use residential consumers receive flat rate monthly electricity bills based on load profiling rate calculations. Those flat rates do not relate and reflect the true and time-varying costs of electricity supply during actual time of consumptions. Without acknowledging the cost differences, consumers do not have any incentive to adjust their load consumption patterns, and inefficiencies of resource allocations can result. Crises and markets failures are often originated from these wholesale and retail market disconnections. Our previously proposed load control strategies (Steps of Temperatures and Pricing Naming) are implemented and integrated to our prototype. The system can serve as a tool to assist end-use residential consumers for their load and budget managements in real-time pricing environments, like Illinois (where 4.5 million consumers can participate in such program). Other features can further add-on to enhance the proposed system (e.g., home security and surveillance system).","PeriodicalId":241744,"journal":{"name":"Conference Record 2009 IEEE Industrial & Commercial Power Systems Technical Conference","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133016686","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
Implementation of high-efficiency battery charger with a zero-voltage-transition pulse-width-modulated boost converter 采用零电压过渡脉宽调制升压变换器的高效电池充电器的实现
Conference Record 2009 IEEE Industrial & Commercial Power Systems Technical Conference Pub Date : 2009-05-03 DOI: 10.1109/ICPS.2009.5463971
Y. Ke, Y. Chuang, Mu-Shi Chen
{"title":"Implementation of high-efficiency battery charger with a zero-voltage-transition pulse-width-modulated boost converter","authors":"Y. Ke, Y. Chuang, Mu-Shi Chen","doi":"10.1109/ICPS.2009.5463971","DOIUrl":"https://doi.org/10.1109/ICPS.2009.5463971","url":null,"abstract":"This work presents a novel battery charger with a zero-voltage-transition (ZVT) pulse-width-modulated (PWM) boost converter that decreases switching losses and attains high charging efficiency. The main switch in the proposed battery charger is conducted under zero voltage and the boost diode is cut off under zero current. Switching is completed under the resonance condition. The proposed battery charger with soft-switching technology has much higher efficiency, lower switch stress and electromagnetic interference (EMI) compared with battery chargers with traditional boost converters. This study utilizes the PWM control mode for switching two active switches. The equations employed to determine circuit parameters are derived from equivalent circuits. Experimental results demonstrate the theoretical effectiveness of the proposed battery charger. The practical average charging efficiency of the proposed battery charger is 91.25%.","PeriodicalId":241744,"journal":{"name":"Conference Record 2009 IEEE Industrial & Commercial Power Systems Technical Conference","volume":"277 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132323162","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
Minimization of energy storage requirements for a mixed renewable system with demand-side management 具有需求侧管理的混合可再生能源系统的储能需求最小化
Conference Record 2009 IEEE Industrial & Commercial Power Systems Technical Conference Pub Date : 2009-05-03 DOI: 10.1109/ICPS.2009.5463969
A. D. de Almeida, Pedro S. Moura
{"title":"Minimization of energy storage requirements for a mixed renewable system with demand-side management","authors":"A. D. de Almeida, Pedro S. Moura","doi":"10.1109/ICPS.2009.5463969","DOIUrl":"https://doi.org/10.1109/ICPS.2009.5463969","url":null,"abstract":"The 2001/77/CE European Commission Directive sets the target of 22% of gross electricity generation from renewables for the Europe, by 2010. In a scenario of large scale penetration of renewable production from wind and other intermittent resources, it is fundamental that the electric system has appropriate means to compensate the effects of the variability and randomness of the wind, solar and hydro power availability. The paper proposes a novel multi-objective method to optimize the mix of the renewable system and the DSM and DR technologies, which will enable a minimum energy storage requirement.","PeriodicalId":241744,"journal":{"name":"Conference Record 2009 IEEE Industrial & Commercial Power Systems Technical Conference","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122934005","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
Standards for Super-Premium Efficiency class for electric motors 电动机超优效率等级标准
Conference Record 2009 IEEE Industrial & Commercial Power Systems Technical Conference Pub Date : 2009-05-03 DOI: 10.1109/ICPS.2009.5463983
A. D. de Almeida, F. Ferreira, João A. C. Fong
{"title":"Standards for Super-Premium Efficiency class for electric motors","authors":"A. D. de Almeida, F. Ferreira, João A. C. Fong","doi":"10.1109/ICPS.2009.5463983","DOIUrl":"https://doi.org/10.1109/ICPS.2009.5463983","url":null,"abstract":"Higher efficiency electric motors can lead to significant reductions in the energy consumption and also reduce the environmental impact. In order to promote a competitive motor market transformation, a new international standard, the IEC 60034-30 has been approved. This standard globally harmonizes motor energy-efficiency classes in general-purpose, line-fed, three-phase, squirrel-cage, induction motors (IMs). In this standard, four efficiency classes are proposed, namely Standard Efficiency (IE1), High-Efficiency (IE2) equivalent to EPAct, Premium Efficiency (IE3) equivalent to NEMA Premium and Super-Premium Efficiency (IE4). IE1, IE2 and IE3 classes were normative, and IE4 class was intended to be informative, since no sufficient market and technological information is available to allow IE4 standardization. The IE4 Super-Premium class, under discussion, can be applied both to line-fed motors and to inverter plus motor units. In fact, for low-power levels (up to 10 hp) it is clear that moving away from IM technology, and considering emergent or best-available technologies such as permanent-magnet synchronous motors (PMSMs) can achieve efficiency levels considerably significantly higher than those defined by Premium IE3 class. In this paper, feasible limits for IE4 class are analysed taking into account the efficiency levels of commercial and expected best available technology. The presented results can be useful to define future international standard ¿Super-Premium¿ or IE4-class levels as well as to set market transformation strategies.","PeriodicalId":241744,"journal":{"name":"Conference Record 2009 IEEE Industrial & Commercial Power Systems Technical Conference","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117309681","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: 30
Multi-region short-term load forecasting in consideration of Heat Index and load/weather diversity 考虑热指数和负荷/天气多样性的多区域短期负荷预测
Conference Record 2009 IEEE Industrial & Commercial Power Systems Technical Conference Pub Date : 2009-05-03 DOI: 10.1109/ICPS.2009.5463968
W. Chu, Yi-Ping Chen, Zheng-Wei Xu, Weijen Lee
{"title":"Multi-region short-term load forecasting in consideration of Heat Index and load/weather diversity","authors":"W. Chu, Yi-Ping Chen, Zheng-Wei Xu, Weijen Lee","doi":"10.1109/ICPS.2009.5463968","DOIUrl":"https://doi.org/10.1109/ICPS.2009.5463968","url":null,"abstract":"This paper proposes a multi-region short-term load forecasting methodology, taking into account the Heat Index, a human-perceived equivalent temperature, to improve the load forecasting accuracy in Taiwan Power Company's (Taipower's) system. With the distinct climate characteristics due to Taiwan's long and narrow topography, it is difficult to obtain satisfactory load forecasting results by treating the whole island as one single region. Therefore, the multi-region load forecasting that factors in the load/weather diversity is applied to enhance the forecasting accuracy. Besides, such weather factors as temperature, relative humidity, and the Heat Index are also considered to examine the prediction accuracy. The results show that adopting the Heat Index as a parameter can effectively improve the accuracy if the temperature of the region under investigation is above 27°C/80°F. By considering both the load/weather diversity and the Heat Index, the further improvement of the load forecasting for the Taipower system in summer can be effectively achieved.","PeriodicalId":241744,"journal":{"name":"Conference Record 2009 IEEE Industrial & Commercial Power Systems Technical Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129411502","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
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