نتایج جستجو برای: scheduling of power plants

تعداد نتایج: 21234226  

2014

A modern power system consists of a large number of thermal and hydel plants connected at various load centers through a transmission network. An important objective in the operation of such a power system is to generate and transmit power to meet the system load demand at minimum fuel cost by an optimal mix of various types of plants. The study of the problem of optimum scheduling of power gen...

Journal: :تحقیقات اقتصادی 0
محمدعلی متفکر آزاد استاد دانشگاه تبریز محسن پورعبادالهان کویچ استادیار دانشگاه تبریز فیروز فلاحی دانشیار دانشگاه تبریز رضا رنج پور استادیار دانشگاه تبریز سکینه سجودی دانشجوی دکتری اقتصاد دانشگاه تبریز

the main objectives of this paper are measuring the technical efficiency of iranian thermal power plants and investigating the determinants of technical efficiency levels in these plants. stochastic nonparametric envelopment data (stoned) method applied to plant-level data over a period of thirteen years from 1999 to 2011. this is the first comprehensive analysis (to our knowledge) of technical...

The major problem of wind turbines is the great variability of wind power production. The dynamic change of the wind speed returns the quantity of the power injected to networks. Therefore, wind–thermal generation scheduling problem plays a key role to implement clean power producers in a competitive environment. In deregulated power systems, the scheduling problem has various objectives than i...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی 1389

the quest for power has formed much of the world history especially in 20th and 21st centuries. oil (energy) particularly after industrial revolution has been a tool for conquest and power and has been transformed to a geopolitical issue. from a geopolitical point of view this has been the case for the last two centuries in central asia and caucasus. central asia and caucasus has always been...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بیرجند 1388

a significant problem in multicarrier communication systems is the necessity to reduce the value of papr (peak-to-average power ratio) of transmitting signal. in this thesis we study the effect of the system parameters such as coding and modulation types on papr and ultimate ber in a mc-cdma system. in this study we consider fading channel as well as the nonlinearity of transmitter’s amplifier ...

1996
Carla P. Gomes Douglas R. Smith Stephen J. Westfold

We describe the synthesis of eecient schedulers for planned shutdowns of power plants for refueling and maintenance (outages), using an automated programming tool, KIDS. Currently, the utility industry has no automated tools to generate schedules that are both safe and resource-eecient. We focused on safety constraints since they are critical in this application. There are several aspects of th...

2012
Liu Ji - Wei Pei Yu - Liang Han Xiang Zeng De - Liang

The economic and stable operation was affected seriously by coal quality disturbance for power plants. Based on model analysis, influence of the disturbance can be considered as gain change of control system. Power capability coefficient of coal was constructed to inhibit it. Accuracy of the coefficient was verified by operating data. Then coal quality disturbance free system based on gain sche...

2004
Carla P. Gomes Douglas Smith Stephen Westfold

optimally in a “reasonable” amount of time. NonetheWe describe the synthesis of efficient schedulers for planned shutdowns of power plants for refueling and maintenance (outages), using an automated programming tool, KIDS. Currently, the utility industry has no automated tools to generate schedules that are both safe and resource-efficient. We focused on safety constraints since they are critic...

2010
Pedro M. Castro Iiro Harjunkoski Ignacio E. Grossmann

Abstract This work addresses the scheduling of continuous single-stage multiproduct plants with energy intensive processing tasks and time-dependent electricity cost and power supply. A new rolling horizon algorithm is proposed that consists of a planning model to predict the production levels and a continuous-time model for detailed scheduling. The results from a set of test problems from the ...

2013
Rajesh Kumar Vijay Garg Bharat Lal

This paper presents a study of various researches which were come out in last few decades on hydro thermal scheduling problems. As we know that the Operation of mix both hydro and thermal plants is far more complex and is of much more importance in a modern power system. The aim of the hydrothermal scheduling problem is to optimize the electricity production and minimized the cost of power. Thi...

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