Optimisation of the Start-up and Operation Regimes of Cooling Water Pumps of a High-Power Hydro Generator
Journal Title: Analele Universitatii "Eftimie Murgu" Resita. Fascicula de Inginerie - Year 2015, Vol 22, Issue 1
Abstract
It is necessary to make sure that the operation of cooling installations of hydro generators could be made in conditions of enhanced security so that the probability of defects occurrence during their exploitation be practically null. The asynchronous regime of direct network start up is accompanied by very high values of the start-up current, associated with important voltage drops on supply cables, which results in the ex-tension of the motor starting time. The present paper shows an efficient method of driving the cooling water pumps by the supply of electric driving motors with variable frequency.
Authors and Affiliations
Ioan Pădureanu, Marcel Jurcu, Ladislau Augustinov, Cornel Hațiegan, Eugen Răduca, Laurențiu Pădeanu
Keywords
Related Articles
- EP ID EP449026
- DOI -
- Views 82
- Downloads 0
On a New Optical Transducer
This paper presents a new type of mechano – optical force transducer which to be used in different mechanical experimental investigations. This transducer has been integrated within a mechanical modulus, providing a usef...
Researches Regarding the Factory Test of Electric High-duty and High voltage Equipment
This paper shows a review of the present methods of testing the high-duty and high voltage electric machines and transformers, to which the authors brought their own contributions concerning their elaboration and exploit...
Forecasts of the Maintenance Activity
Enhancing the machines’ technical and technological performance through constructive improvements that allow for the automation of orders, contributes to the increasing of the production capacity of the system and for ma...
Optimal Control of an Electrical Drive System with Variable Torque
The optimal control from the energetic point of view of the transient state of electrical drive systems is presented. A step variation of the load torque in the optimization interval is considered. The performance criter...
On the Evanescent Waves in Sonic Band-gaps
The band-gaps or the Bragg reflections occur at different frequencies inverse proportional to the central distance between two scaterers. The evanescent waves may converge or diverge as distance goes to infinity. If the...