Power selection of a static symmetrical device under dynamically changing load conditions
https://doi.org/10.37493/2307-907X.2025.1.1
Abstract
Introduction. Imbalance of currents and voltages is one of the constantly operating factors in the operation of electric networks. Redistribution of loads by phases is not always a sufficient measure to reduce asymmetry. Under certain conditions, asymmetry reduction can be achieved only by using symmetrical devices. However, in conditions of variable character of the symmetrized load the application of symmetrical devices can cause a number of technical difficulties connected with the necessity to regulate the parameters of the symmetrical device.
Goal. Determination of the optimum value of the reactive elements power of the static symmetering device on the basis of the Steinmetz scheme at symmetrization of the variable load.
Materials and methods. The research is based on a series of computational experiments allowing to form different load schedules with the possibility of selecting the optimal parameters of the symmetering device.
Results and discussion. The value of the optimum power of the symmetering device under conditions of variable schedule of the symmetrized load has been determined.
Conclusion. According to the results of the conducted research it is possible to draw a conclusion that regardless of the shape of the schedule of the symmetrized load the optimal power of the static symmetrical device corresponds to the average integral value of the variable power of the load.
About the Authors
A. V. PetrovRussian Federation
Anton V. Petrov, Cand. Sci. (Techn.), Associate Professor, Associate Professor of the Department
Faculty of Petroleum Engineering; Department of Automated Electric Power Systems and Power Supply
355017; 1, Pushkin str.; Stavropol
Scopus ID: 57210523416, Researcher ID: ITT-8942-2023
V. E. Martusenko
Russian Federation
Vitaliy E. Martusenko, Master
Faculty of Mathematics and Computer Science named after Prof. N.I. Cherviakov
355017; 1, Pushkin str.; Stavropol
Researcher ID: ISS-8247-2023
R. A. Magayayev
Russian Federation
Rasul A. Magayayev, Postgraduate Student
Faculty of Petroleum Engineering; Department of Automated Power Systems and Electricity Supply
355017; 1, Pushkin str.; Stavropol
Researcher ID: LOS-4443-2024
V. E. Martusenko
Russian Federation
Vladislav E. Martusenko, Student
Faculty of Mathematics and Computer Sciences named after Prof. N.I. Cherviakov
355017; 1, Pushkin str.; Stavropol
Researcher ID: LOS-0678-2024
References
1. Toropov AS, Glushkin EYa, Sulberekov VB. The problem of voltage asymmetry in distribution electric networks 0,4 kV. In High technologies, science and education: current issues, achievements and innovations : conference materials. Penza; 2022. P. 23-25. (In Russ.).
2. Ded AV. To a problem of levels of indicators of asymmetry of tension and currents in networks of 0,4 kV. Omsk scientific bulletin. 2017;2(152):63-65. (In Russ.).
3. Kostyukov DA, Petrov AV, Kushch AE. Assessment of the proportional contribution of the consumer to the voltage unbalance negative sequence networks with isolated neutral. Newsletter of North-Caucasus Federal University. 2018;5(68):7-18. (In Russ.). doi: 10.37493/2307-907X-2018-68-5-7-18
4. Malakhov PS, Pavlov AA. About the influence of voltage asymmetry on the operation modes of the urban electric network. In Culture, science, education: problems and prospects. Proceedings of the II All-Russian scientific and practical conference. 2013. P. 89-94. (In Russ.).
5. Petrov AV. Development of the engineering methods of the voltage asymmetry estimation in the 10-0, 4 kV networks: dissertation for the degree of Candidate of Technical Sciences. Stavropol; 2003. 200 p. (In Russ.).
6. Shakirov VA, Syroveshkin AM, Buyanina OA. Investigation of the influence of voltage asymmetry on the operation of induction motors. In Proceedings of the Bratsk State University. Series: Natural and engineering sciences – development of Siberian regions. 2011;2:8-11. (In Russ.).
7. Strizhichenko AV, Gubin MD. Evaluation of the influence of the voltage asymmetry factor on the induction motor heating. In Management of the electrical energy quality : proceedings of the International Scientific and Practical Conference. Moscow; 2018. P. 167-171. (In Russ.).
8. Kharlamov KD. Influence of the current asymmetry on the transformers operation. Alleya nauki = Alley of Science. 2018;6(22):507-511. (In Russ.).
9. Grinkrug MS, Gordin SA. Influence of the load asymmetry on the transformers operation parameters. Energetik = Power engineer. 2011;7:10-12. (In Russ.).
10. Petrov AV, Kostyukov DA, Martusenko VE, Vakhtin AS. Using the Steinmetz scheme for symmetrization of three-phase load. Electric power engineering through the eyes of youth. 2020;2:254-257. (In Russ.).
11. Dulepov DE, Dulepova YuM, Kondranenkova TE. Determination of the optimal number of stages of the regulated symmetering device (in Russian). Bulletin NGIEI. 2020;8(111):26-35. (In Russ.). doi: 10.24411/2227-9407-2020-10071
12. Petrov AV, Legky AA, Sakhno RA. Use of the circular diagram to determine the parameters of the throttle-transformer symmetering device. Actual problems of engineering sciences : proceedings of the VI annual scientific and practical conference of teachers, students and young scientists of the North-Caucasus Federal University "University Science for the Region". 2018:384-386. (In Russ.).
13. Vakhtin AС, Zvezdilin RA. Determination of the three-phase symmetric compensating device parameters in the 6-10 kV networks. Energetika i energosberezhenie: teoriya i praktika = Energy and energy saving: theory and practice. 2020:207-1-207-5. (In Russ.).
Review
For citations:
Petrov A.V., Martusenko V.E., Magayayev R.A., Martusenko V.E. Power selection of a static symmetrical device under dynamically changing load conditions. Newsletter of North-Caucasus Federal University. 2025;(1):9-20. (In Russ.) https://doi.org/10.37493/2307-907X.2025.1.1