نتایج جستجو برای: hydro power system

تعداد نتایج: 2591049  

2012
Priyabrata Adhikary Pankaj Kr Roy Asis Mazumdar

The primary aim of this paper is to provide background information, motivation for applications and an exposition to the methodologies employed in the development of fuzzy logic based decision making in hydro or water power engineering by optimum selection of hydro turbine blade material. All the works on the application of multi criteria decision analysis (MCDA) or fuzzy logic to material scie...

2011
Sangameswara Raju

This paper presents the AGC controllers to regulate the system frequency and to regulate the power generation of various GENCOs at scheduled levels in a deregulated power system by optimizing the parameters of controller using Evolutionary Real coded genetic algorithm (RCGA). The performance of the controller is investigated on a two-area interconnected power system consisting of Hydro-Thermal ...

2014
M Z Qamar

The natural resources of Himalayas in terms of hydro power generation are not only crucial for the Himalayan states of India, but very important for the whole country. These states seem to be keen in exploiting their vast hydro electricity potential for net revenue earning. However, due to weak geological conditions and steep slopes these rivers carry a huge quantity of sediment with them. The ...

2015
K. R. M. Vijaya Chandrakala S. Balamurugan N. Janarthanan B. Anand Amrita Vishwa Vidyapeetham

The article focuses on the issues of Load Frequency Control (LFC) under non-linear strategies in multi source multi area hydro thermal system. On practical perspective dead band, boiler dynamics, reheat steam turbine along with hydro turbine operating under two different area capacities are considered in the system. When subjected to random load variations in both the areas, the system exhibits...

2013
Poornima Devi

This paper mainly deals with the design of forecasting model for Hydro power generation using Fuzzy time series. The fuzzy time series has recently received an increasing attention because of its capability of dealing with vague and incomplete data. There have been a variety of models developed either to improve forecasting accuracy or reduce computation overhead. This technique has been applie...

This paper focuses on expanding and evaluating an automatic generation control (AGC) system of a hydrothermal system by modelling the appropriate generation rate constraints to operate practically in an economic manner. The hydro area is considered with an electric governor and the thermal area is modelled with a reheat turbine. Furthermore, the integral controllers and electri...

2014
K. P. Singh Parmar H. Shayeghi H. A. Shayanfar

This paper presents the Load frequency control (LFC) of a multi-source power system with Redox flow batteries (RFB). The power system comprises non-reheat thermal, hydro and gas generating units. RFB is integrated to the LFC system to improve the dynamic responses. The proportional plus integral (PI) controller is designed using the PSO technique. Dynamic responses are obtained by giving 1% ste...

Journal: :avicenna journal of phytomedicine 0
mohammad naser shafei neurogenic inflammation research centre, school of medicine, mashhad university of medical sciences, mashhad, iran amir baniasad department of physiology, school of medicine, mashhad university of medical sciences, iran abolfazl khajavirad department of physiology, school of medicine, mashhad university of medical sciences, iran mahmoud hosseini neurocognitive research center, school of medicine, mashhad university of medical sciences, iran saeed aminzadah pharmacological research center of medicinal plants, school of medicine, mashhad university of medical sciences, mashhad, iran mahmoud ghavi department of physiology, school of medicine, mashhad university of medical sciences, iran

objective: rosa damascena mill l. (r. damascena) is a well-known plant with fragrant effects. several therapeutic effects of this plant on respiratory, gastrointestinal and nervous systems have been reported. it is also suggested to have beneficial effect on cardiovascular system especially blood pressure regulation. the present study was carried out to evaluate acute cardiovascular effect of h...

2008
S. Alligné C. Nicolet P. Allenbach B. Kawkabani J.-J. Simond F. Avellan

Hydroelectric power plants are known for their ability to cover variations of the consumption in electrical power networks. In order to follow this changing demand, hydraulic machines are subject to off-design operation. In that case, the swirling flow leaving the runner of a Francis turbine may act under given conditions as an excitation source for the whole hydraulic system. In high load oper...

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