2015 International Conference on Technological Advancements in Power and Energy (TAP Energy)最新文献_第3页

A photovoltaic water pumping system with high efficiency and high lifetime 一种高效、高寿命的光伏抽水系统

2015 International Conference on Technological Advancements in Power and Energy (TAP Energy) Pub Date : 2015-06-24 DOI: 10.1109/TAPENERGY.2015.7229668

S. Parvathy, A. Vivek

引用次数: 9

Performance evaluation of multi machine power system with Fuzzy based Power System Stabilizer 基于模糊稳定器的多机电力系统性能评价

2015 International Conference on Technological Advancements in Power and Energy (TAP Energy) Pub Date : 2015-06-24 DOI: 10.1109/TAPENERGY.2015.7229614

M. Jalaluddin, H. .. Saikumar, Bansilal

引用次数: 4

Successful operation of large Circulating Fluid Bed Combustion boilers firing high sulfur Indian lignite 燃烧高硫印度褐煤的大型循环流化床燃烧锅炉的成功运行

2015 International Conference on Technological Advancements in Power and Energy (TAP Energy) Pub Date : 2015-06-24 DOI: 10.1109/TAPENERGY.2015.7229632

P. Selvakumaran, A. K. Bakthavatsalam

{"title":"Successful operation of large Circulating Fluid Bed Combustion boilers firing high sulfur Indian lignite","authors":"P. Selvakumaran, A. K. Bakthavatsalam","doi":"10.1109/TAPENERGY.2015.7229632","DOIUrl":"https://doi.org/10.1109/TAPENERGY.2015.7229632","url":null,"abstract":"Over the past decades, designers and operators of fluidized beds have been concentrating on developing the CFBC technology, establishing the optimum operating conditions and troubleshooting associated with refractory, etc. A sorbent, typically limestone or dolomite is used in the fluidized-bed combustion boiler to capture sulfur di-oxides (SO2) in-situ. Due attention has not been paid to understand the limestone characteristics that are not only important for efficient capture of SO2 but also greatly influence the deposition. 125 MWe Circulating Fluidized Bed Combustion (CFBC) boiler experienced severe fouling in back pass of the boiler leading to obstruction of gas flow passage, while using high sulfur lignite with sorbent, calcium carbonate, to capture sulfur dioxide. Optical microscopy of the hard deposits showed mainly anhydrite (CaSO4) and absence of intermediate phases such as calcium oxide or presence of sulfate rims on de-carbonated limestone. It is hypothesized, that loose unreacted calcium oxide that settle on tubes are subjected to re-carbonation and further extended sulfation resulting in hard deposits. Foul probe tests were conducted in selected locations of back pass for five different composition of lignite, with varied high sulfur and ash contents supplied from the mines along with necessary rates of sorbent limestone to control SO2 and the deposits build up rate was determined. The deposit build- up was found increasing, with increase in ash content of lignite, sorbent addition and, percentage of fines in limestone. This paper covers the field modifications and remedial measures carried out to dislodge deposits on heat transfer surfaces, to handle the deposits in ash conveying system, and to control sorbent fines from the milling circuit thereby overcoming the deposit formation and clogging.","PeriodicalId":6552,"journal":{"name":"2015 International Conference on Technological Advancements in Power and Energy (TAP Energy)","volume":"13 3 1","pages":"282-288"},"PeriodicalIF":0.0,"publicationDate":"2015-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78081651","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

Development of a Multi-characteristic Distance Relay 多特性距离继电器的研制

2015 International Conference on Technological Advancements in Power and Energy (TAP Energy) Pub Date : 2015-06-24 DOI: 10.1109/TAPENERGY.2015.7229613

David G Philip, A. Rajendran

引用次数: 0

High frequency SEPIC Converter with PWM Integral Sliding Mode Control 带PWM积分滑模控制的高频SEPIC变换器

2015 International Conference on Technological Advancements in Power and Energy (TAP Energy) Pub Date : 2015-06-24 DOI: 10.1109/TAPENERGY.2015.7229651

G. Gireesh, P. Seema

引用次数: 10

Pre-regulated push pull converter for hybrid energy systems 用于混合能源系统的预调节推挽转换器

2015 International Conference on Technological Advancements in Power and Energy (TAP Energy) Pub Date : 2015-06-24 DOI: 10.1109/TAPENERGY.2015.7229603

K. Gopinathan, I. Mamatha

{"title":"Pre-regulated push pull converter for hybrid energy systems","authors":"K. Gopinathan, I. Mamatha","doi":"10.1109/TAPENERGY.2015.7229603","DOIUrl":"https://doi.org/10.1109/TAPENERGY.2015.7229603","url":null,"abstract":"Current fed push pull converters are widely used in electronic ballast circuits, telecommunication industries and satellite applications. In this work, a current fed push pull converter which can be powered by solar PV or conventional single phase ac supply is proposed. A current fed push pull acts as an isolated boost converter and needs only a single input inductor. To enhance the significance of a buck stage prior to push pull stage, comparison of a current fed push pull converter with that of a buck current fed push pull is carried out. Buck pre-regulator reduces the voltage stress of the push pull switches. In addition, it is sufficient to modulate the width of the pulse fed to buck stage while maintaining the pulse width of the switches of push pull stage constant. In the proposed design, average current mode control is preferred as it has noise immunity and do not require slope compensation. Based on the input ac supply and readings from a 20W solar panel, a 20W, 100V, 0.2A cascaded buck push pull converter is designed and simulated using PSIM. The control circuit for closed loop simulation is obtained using PSIM smart control.","PeriodicalId":6552,"journal":{"name":"2015 International Conference on Technological Advancements in Power and Energy (TAP Energy)","volume":"24 1","pages":"121-126"},"PeriodicalIF":0.0,"publicationDate":"2015-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90214780","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

Fault location in distribution feeders with optimally placed PMU's 配电馈线的故障定位与最佳位置的PMU

2015 International Conference on Technological Advancements in Power and Energy (TAP Energy) Pub Date : 2015-06-24 DOI: 10.1109/TAPENERGY.2015.7229659

A. Rajeev, T. S. Angel, F. Khan

引用次数: 25

Closed loop control system for a heliostat field 定日镜场闭环控制系统

2015 International Conference on Technological Advancements in Power and Energy (TAP Energy) Pub Date : 2015-06-24 DOI: 10.1109/TAPENERGY.2015.7229630

J. Freeman, K. Keerthi, L. R. Chandran

{"title":"Closed loop control system for a heliostat field","authors":"J. Freeman, K. Keerthi, L. R. Chandran","doi":"10.1109/TAPENERGY.2015.7229630","DOIUrl":"https://doi.org/10.1109/TAPENERGY.2015.7229630","url":null,"abstract":"The alarming energy crisis, heightened by the continuing depletion of fossil fuels, accentuates the need for the development of renewable energy technology, knowledge, and infrastructure. A Central Receiver (Power Tower) Solar Energy system uses heliostats (motorized planar reflectors) to continuously reflect direct radiation from the sun onto a central receiver. This paper discusses a novel closed loop control system for a heliostat field. In this system, rough adjustment of the heliostat is performed using an Inertial Measurement Unit (IMU). Precision adjustment of the heliostat is performed by inducing a small mechanical vibration in the heliostat's reflective surface, using a piezoelectric actuator. This vibration creates time-dependent changes in the light waves reflected from the heliostat, which can be detected by photo-sensors surrounding the thermal receiver target. The position of misaligned heliostats can be corrected once they are identified by FFT analysis of the light waves received by the photo-sensors. This technique can, in principle, control thousands of heliostats simultaneously. The control system is coded using MATLAB.","PeriodicalId":6552,"journal":{"name":"2015 International Conference on Technological Advancements in Power and Energy (TAP Energy)","volume":"1 1","pages":"272-277"},"PeriodicalIF":0.0,"publicationDate":"2015-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75124497","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

Two Switch Buck Boost converter for Power Factor correction 用于功率因数校正的双开关降压升压转换器

2015 International Conference on Technological Advancements in Power and Energy (TAP Energy) Pub Date : 2015-06-24 DOI: 10.1109/TAPENERGY.2015.7229662

C. Chandran, L. R. Chandran

引用次数: 8

Online benefit optimization in a liberalized/free microgrid market model 开放/免费微电网市场模式下的在线效益优化

2015 International Conference on Technological Advancements in Power and Energy (TAP Energy) Pub Date : 2015-06-24 DOI: 10.1109/TAPENERGY.2015.7229644

V. Mohan, J. Singh, W. Ongsakul, S. G. Nair

{"title":"Online benefit optimization in a liberalized/free microgrid market model","authors":"V. Mohan, J. Singh, W. Ongsakul, S. G. Nair","doi":"10.1109/TAPENERGY.2015.7229644","DOIUrl":"https://doi.org/10.1109/TAPENERGY.2015.7229644","url":null,"abstract":"In this paper, an efficient online energy management problem for a liberalized microgrid market model is formulated. Online optimal power dispatch problem solved by particle swarm optimization with time varying acceleration co-efficient (PSO-TVAC) and backward-forward sweep power flow is used to manage the microgrid sources and loads, considering fuel and emission costs of distributed energy resources (DERs), hourly profits, load curtailment and buying/selling of power from/to the main grid. Instantaneous measured data of demand and renewable energy are used to optimally dispatch the conventional DERs, trade the grid power and curtail the selected loads to satisfy the power balance in the online mode. The effectiveness of the formulated problem and the proposed method is investigated on the residential feeder of the LV benchmark radial microgrid in terms of fuel cost, emission, voltage deviation, curtailed load, upstream grid power traded and overall execution time. Two different objectives of the microgrid central controller (MGCC) based on different levels of participation in the open market are compared viz. ;overall profit maximization ; and operational cost minimization.","PeriodicalId":6552,"journal":{"name":"2015 International Conference on Technological Advancements in Power and Energy (TAP Energy)","volume":"13 1","pages":"351-356"},"PeriodicalIF":0.0,"publicationDate":"2015-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72551255","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