ANALYSIS OF POWER SYSTEM OPERATION MODES OF IRRIGATION FACILITIES

Ilhomjon Qodirov

Authors

 

Vokhidov A.J. – senior lecture, Polytechnic Institute of Tajik Technical University,Khujand, Republic of Tajikistan, aybjon_88@mail.ru

 

Annotation

 

  The article provides a detailed analysis of the operating modes of the energy system of large pumping stations that are used for irrigation of agricultural land. The main reasons for the failure of the electrical equipment of the pumping station are identified. It has been established that the most difficult mode of operation of the power system of pumping stations is the starting modes of pumping units, where there are significant increases in current and load in the engine. Starting currents, first of all, negatively affect the technical condition of the motor windings of pumping units and increase the risk of failures and accidents in the station. In addition, the work carried out studies of the main factors affecting the stability of the energy system of pumping stations. The study revealed significant negative effects on the stability of the power system during the start-up of electric motors, which cause voltage dips in the network. Voltage dips formed during the start-up of large electric motors of a pumping station affect the operation of neighboring units, and even the units of pumping stations located quite far away. Such a state requires a more detailed analysis of the electromagnetic compatibility of electrical receivers of the power systems of irrigation complexes in terms of mutual influences on technical and technological processes.

 

Key words

 

 pumping station, synchronous motor, voltage dip, starting mode, energy system sustainability

 

References

 

  1. Vohidov A.J. Reactive power compensation of pumping station synchronous motors. Bulletin of PITTU named after academician M.S. Osimi. 2018. No. 4 (9). pp. 48-52.
  2. Vohidov A.D., Dadabaev Sh.T., Razokov F.M. To the question of the tasks of improving the reliability of the power supply system of the pumping station of the first lift. Reliability. 2016. V. 16. No. 4 (59). pp. 36-39.
  3. Vohidov A.D. Investigation of the causes of failure of electrical equipment of high power pumping stations. News of the Tula State University. Technical science. 2018. No. 12. S. 168-172.
  4. Dadabaev Sh.T. Study of starting transient processes of a high-voltage synchronous electric drive, taking into account heating and hot climate. Energy systems. 2017. No. 1. S. 179-184.
  5. Dadabaev Sh.T., Rakhmatov Kh.A., Abdumalikov B.A. Study of technological and transient processes of electric drives of turbomechanisms. News of the Tula State University. Technical science. 2017. No. 4. S. 256-262.
  6. Kalinin, A.G. Research and development of energy-efficient modes of electric drives in power supply systems. Dissertation for the degree of candidate of technical sciences. Cheboksary 2011
  7. Leznov B.S. Energy saving and variable drive in pump and blower installations. – M.: Energoatomizdat, 2006. 360 p. ill.
  8. Larionov V.N., Kalinin A.G. Energy efficiency and energy saving in electric drives with fan load. – Cheboksary: Publishing house. Chuvash. Univ., 2012. – 146 p.
  9. Mirkhalikova D.S., Dadabaev Sh.T. Study of starting modes of an asynchronous electric drive of an irrigation pumping station at a reduced network voltage. News of the Tula State University. Technical science. 2020. No. 3. S. 303-309.
  10. Onishchenko G.B., Yunkov M.G. Electric drive of turbomechanisms. – M.: Energy, 1972. 240 p. ill.

 

Publication date

2023-10-28