2006 IEEE Power India Conference最新文献_第3页

Daily Volt/Var control in distribution networks with regard to DGs: a comparison of evolutionary methods 配电网中关于dg的日电压/无功控制:进化方法的比较

2006 IEEE Power India Conference Pub Date : 2006-06-05 DOI: 10.1109/POWERI.2006.1632555

Javad Olamaie, T. Niknam

引用次数: 15

Stochastic model for optimal declaration of day ahead station availability in power pools in India 印度电力池日前电站可用性最优声明的随机模型

2006 IEEE Power India Conference Pub Date : 2006-06-05 DOI: 10.1109/POWERI.2006.1632553

N. Vaitheeswaran, R. Balasubramanian

{"title":"Stochastic model for optimal declaration of day ahead station availability in power pools in India","authors":"N. Vaitheeswaran, R. Balasubramanian","doi":"10.1109/POWERI.2006.1632553","DOIUrl":"https://doi.org/10.1109/POWERI.2006.1632553","url":null,"abstract":"This paper evolves a strategy for optimal declaration of the day ahead generation availability in the 'Availability Based Tariff regime in India'. The mathematical formulation presented in this paper maximizes the expected revenue of the generator by considering various stochastic parameters. The computational model developed in this work considers three random variables viz, the generating unit's availability, unscheduled interchange (UI) and load. The state transition of generating units is assumed to follow the first order Markov's process. The load and unscheduled interchange related to grid frequency follow known discrete probability distributions. Monte Carlo state duration sampling is applied for simulating the unit transitions. Both UI as well as load uncertainty are generated by state sampling approach from their probability distributions. The expected revenue generated in a day, comprising of 96 time blocks of 15 minutes duration, is statistically computed. Finally by iterative approach, the expected optimal station availability for next day's declaration is computed. A numerical example of a generating station is illustrated to show the revenue maximization strategy by this optimization","PeriodicalId":191301,"journal":{"name":"2006 IEEE Power India Conference","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115014597","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

Direct torque control: a practical approach to electric vehicle 直接转矩控制:电动汽车的实用方法

2006 IEEE Power India Conference Pub Date : 2006-06-05 DOI: 10.1109/POWERI.2006.1632617

Bhim Singh, P. Jain, A. Mittal, J. Gupta

引用次数: 34

A decoupling technique to improve the efficacy of the vector control model for SSSC 一种解耦技术以提高SSSC矢量控制模型的有效性

2006 IEEE Power India Conference Pub Date : 2006-06-05 DOI: 10.1109/POWERI.2006.1632543

K. Ahmadian, A. Kazemi

引用次数: 2

Design and simulation of PI control for paralleled positive output elementary Luo converters for distributed power supplies 分布式电源并联正输出初等罗变换器PI控制的设计与仿真

2006 IEEE Power India Conference Pub Date : 2006-06-05 DOI: 10.1109/POWERI.2006.1632560

R. Kayalvizhi, S. P. Natarajan, D. Sivakumar, K. Elangovan

{"title":"Design and simulation of PI control for paralleled positive output elementary Luo converters for distributed power supplies","authors":"R. Kayalvizhi, S. P. Natarajan, D. Sivakumar, K. Elangovan","doi":"10.1109/POWERI.2006.1632560","DOIUrl":"https://doi.org/10.1109/POWERI.2006.1632560","url":null,"abstract":"The switch mode DC-DC converters are used to convert the unregulated DC input voltage into a controlled DC output voltage at a desired level. They are mostly used in computer power supplies, servo motor drives, medical equipments etc. Luo converter is a recently developed DC-DC converter. Positive output Luo converter performs the voltage conversion from positive source voltage to positive load voltage. Parallel connection of Luo converters are used when available converters are of lower current rating but load requires higher current. Because of dissimilarities in devices and components used in converters, current drawn or supplied by each converter is unequal which will lead to converter failure or malfunction. Therefore the main control issues in parallel connected converters are to ensure proper current sharing and equalize the output currents among converters and also to ensure regulated output voltage under load and supply disturbances. The objectives of this work are to design and develop PI control for paralleled positive output Luo converters using MATLAB software. The simulation results are presented. They validate the PI control developed","PeriodicalId":191301,"journal":{"name":"2006 IEEE Power India Conference","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130240901","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

Distribution bus voltage control using DVR under the supply frequency variations 配电母线电压控制采用DVR在电源频率变化下进行

2006 IEEE Power India Conference Pub Date : 2006-06-05 DOI: 10.1109/POWERI.2006.1632524

M. Chawla, A. Rajvanshy, A. Ghosh, A. Joshi

引用次数: 14

Computation of reclosing time and suitable gain of automatic voltage regulator 自动调压器重合闸时间及合适增益的计算

2006 IEEE Power India Conference Pub Date : 2006-06-05 DOI: 10.1109/POWERI.2006.1632572

Q.C. Le, B. Phan, T. Khoa

引用次数: 6

Design of HV transmission line protection and control system using wavelet transform for microcontroller application 利用小波变换设计高压输电线路保护与控制系统的单片机应用

2006 IEEE Power India Conference Pub Date : 2006-06-05 DOI: 10.1109/POWERI.2006.1632621

A. Sinha, A. Yadav

{"title":"Design of HV transmission line protection and control system using wavelet transform for microcontroller application","authors":"A. Sinha, A. Yadav","doi":"10.1109/POWERI.2006.1632621","DOIUrl":"https://doi.org/10.1109/POWERI.2006.1632621","url":null,"abstract":"The increasing complexity of the modern power system makes the transient as an important phenomenon. It required the fast fault detection. The fault has the fundamental components and higher order harmonics and time domain information. Analysis of these higher frequencies and noise are very helpful for the detection of the fault. For the proper planning and the operation of digital computation and simulation is necessary. These computer programs include short-circuit analysis, transients program, stability analysis, and power flow study. The extraction of the frequency component of voltage & current with the help of wavelet is presented. This frequency component directly gives the faulty transmission line resistance & reactance. The Mho relay characteristic is utilized for the analysis purpose. Calculated values of resistance & reactance are plotted in the graph. This paper proposed wavelet theory and its application in the development of transmission line protections. The proposed paper simulates a power system network in the PSCAD-a transient simulation and microcontroller program. The simulation of the protective relays under power disturbance is of particular interest in this work","PeriodicalId":191301,"journal":{"name":"2006 IEEE Power India Conference","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116195831","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: 7

Decision support requirements for intelligent operation of southern grid in India 印度南部电网智能化运行的决策支持需求

2006 IEEE Power India Conference Pub Date : 2006-06-05 DOI: 10.1109/POWERI.2006.1632582

K. Bhaskar, V. Sarma, D. Thukaram, K. Ramakrishna

引用次数: 1

Implementation of low loss Mn-Zn ferrite cores for power electronics applications 电力电子应用低损耗锰锌铁氧体铁芯的实现

2006 IEEE Power India Conference Pub Date : 2006-06-05 DOI: 10.1109/POWERI.2006.1632595

H. Nien, T. Liang, C.K. Huang, S. Changchien, H. W. Shieh

{"title":"Implementation of low loss Mn-Zn ferrite cores for power electronics applications","authors":"H. Nien, T. Liang, C.K. Huang, S. Changchien, H. W. Shieh","doi":"10.1109/POWERI.2006.1632595","DOIUrl":"https://doi.org/10.1109/POWERI.2006.1632595","url":null,"abstract":"Simultaneous introduction of CaO, Co2O3 and MoO3 dopants into low loss manganese-zinc soft ferrites remarkably improves the power loss characteristic of the ferrite cores. Since the driving frequency of switching power supplies has been raised from several kHz to more than 1 MHz, the power loss of the magnetic devices must be reduced. The eddy current loss of soft ferrite will take a major proportion of iron loss in these high-frequency switching power supplies. An attempt was made to develop low loss Mn-Zn polycrystalline ferrites by increasing resistivity to decrease eddy current loss. Doped Mn-Zn ferrites were prepared by conventional ceramic technique and sintered at the temperature of 1320degC for 1-8 hours respectively in air. The DC resistivity was measured by using four-probe methods on sintered disks whose sides were polished and coated with a thin layer of silver paste as a good contact material. The magnetic permeability at room temperature was measured by using an impedance analyzer (Hewlett-Packard, Model HP4294A) with HP-16047 test fixture. The core loss of Mn0.58Zn0.37Co0.01Fe2.04 O4 ferrite doped with 0.08 wt% MoO3 is 370 mW/c.c at 500 kHz/70 mT","PeriodicalId":191301,"journal":{"name":"2006 IEEE Power India Conference","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125353555","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