VOLTAGE DIPS INTERACTION STUDY IN THE NETWORK ON OPERATING MODE OF POWERFUL ASYNCHRONOUS MOTORS

The scientific work is devoted to the study of the interaction of voltage dips in the network and the operating mode of powerful asynchronous motors. The mode of operation of powerful induction motors is very difficult, as complex transients processes are observed in this mode. Typically, the quantities considered in motor transients are electric current, electromagnetic torque and motor speed. Operating mode with heavy transients usually has a negative effect on the power supply system. One of such negative consequences is the occurrence of voltage dips in the network. Voltage dips in the network, in turn, negatively affect consumers of electrical energy, especially for asynchronous electric motors. In asynchronous motors, the dependence of the electromagnetic torque on voltage is quadratic. Taking this factor into account, the issue of starting an asynchronous motor at different values of residual voltage in the network is analyzed. The article also studies the impact of the direct start mode of an asynchronous motor on the network, the results are presented in the form of generally understandable graphs.

voltage dip, asynchronous motor, direct start, mechanical description, transient process, starting process.

1. Dadabaev, Sh. T. Study of Starting Modes of Asynchronous Motors under Low Power Quality of the Supply Network / Sh. T. Dadabaev, E. I. Gracheva, I. R. Karimov, S. Valtchev // Bulletin of Kazan State Power Engineering University. – 2021. – Vol. 13, No. 1(49). – pp. 3–15. – EDN OOZYKS.

2. Dadoboev, Sh. T. Development of Measures to Improve the Technical Reserve of Electrical Equipment at Large-Capacity Pumping Stations / Sh. T. Dadoboev // Bulletin of PITTU Named After Academician M.S. Osimi. – 2023. – No. 2(27). – pp. 47–58. – EDN ELQSQL.

3. Dadoboev, Sh. T. Study of Transient Processes in the Power System During Continuous Operation of Large-Capacity Pumping Units / Sh. T. Dadoboev, M. E. Komilova // Bulletin of PITTU Named After Academician M.S. Osimi. – 2024. – No. 2(31). – pp. 45–53. – EDNDKHLOW.

4. Dadoboev, Sh. T. Transient Processes in the Power System of an Irrigation Station During the Direct Connection of Large-Capacity Units / Sh. T. Dadoboev, A. J. Vohidov // Bulletin of PITTU Named After Academician M.S. Osimi. – 2024. – No. 1(30). – pp. 38–45. – EDNUAWOUP.

5. Kalinin, A.G. Research and Development of Energy-Efficient Operating Modes of Electric Drives in Power Supply Systems: Specialty 05.09.03 “Electrical Engineering Complexes and Systems”: Dissertation for the Degree of Candidate of Technical Sciences / Kalinin Alexey Germanovich. – Cheboksary, 2011. – 137 p.

6. Kartashev, I.I. Analysis of Voltage Sags in 110–220 kV Power Networks / I.I. Kartashev, A.V. Plakida, N.K. Khromyshev // Elektrichestvo (Electricity). – 2005. – No. 4. – pp. 2–8.

7. Shepelin, V.F. Starting Modes of Synchronous Motors under Harsh Starting Conditions / V.F. Shepelin, N.V. Donskoy, B.S. Fedorov // Elektrotekhnika (Electrical Engineering). – 2006. – No. 2. – pp. 34–40.

8. Shpiganovich, A.N. Voltage Sags in Enterprise Power Systems / A.N. Shpiganovich, I.S. Murov // National Association of Scientists. – 2015. – No. 2-4(7). – pp. 6–7.

2026-03-25