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AUTOMATIC DRIVE -SUPPORT METHOD FOR CONSTANT PRESSURE MAINTANENCE AT PUMP UNITS OF THE HYDRAULIC POWER STATIONS

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ARTICLE ANNOTATION

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Self-start of the pump units enables to increase significantly power supply reliability for pump units of the meliorative pump stations which are the major consumers of electricity.Automatization provides the proper effect if only self-start of pump units is implemented. Currently self-starting theory has been developed up to the level that allows solving the problems set by the practice. In the study of the self-start of the pumping units of the meliorative pumping stations, the solution of the problem is associated with the development of a methodology for calculating the static and dynamic modes of a pumping unit at the drive loss and transition to self-starting, as well as the calculation of hydromechanical and hydraulic transients of the system by means of the electronic computers, that has a great significance.The development of machine water-lifting for irrigation has led to a sharp increase in the proportion of these consumers in the electrical systems, to the extent that machine irrigation has a significant impact on energy balances and operating modes of the energy system. Analysis of the state of electricity consumption by irrigation pumping stations shows the presence of significant reserves of energy savings, reaching on average up to 15%, and in some cases up to 18-20%, depending on the design features of the pumping stations and their purpose. Since the consumption of electric energy mainly occurs through the electric drive of the pumps, the problems of rational use of electric energy should be solved using the energy-saving means of an electric drive.In this research, the task of a water-lifting pump station is to maintain a given pressure of the pumped water regardless of its flow rate, which can vary significantly depending on many conditions Water-lifting pumping stations are designed to pump maximum flow. With this in mind, regulation methods are required to ensure the operation of pumping units at different costs

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Tags

# power system# pipeline# pumping unit# transient# electric drive# power equipment# electrical equipment# self-starting# reclamation pumping stations# starts# emergency shutdowns# free-running# stopping# induction motor# power line

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https://eroi.uz/11.0008/A0820-0007

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References

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