Resource-Saving Overcurrent Protection

Dauren Dzhambulovich Issabekov (), Aleksandr Petrovich Kislov, Vadim Pavlovich Markovskiy, Nurlybek Shakaevich Zhumataev, Aliya Kairullovna Zhumadirova and Damir Serikovich Narynbayev
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Dauren Dzhambulovich Issabekov: Department of Electrical Power Engineering, Faculty of Energetics, Toraighyrov University, Lomov Str. 64, Pavlodar 140008, Kazakhstan
Aleksandr Petrovich Kislov: Department of Electrical Engineering and Automation, Faculty of Energetics, Toraighyrov University, Lomov Str. 64, Pavlodar 140008, Kazakhstan
Vadim Pavlovich Markovskiy: Department of Electrical Power Engineering, Faculty of Energetics, Toraighyrov University, Lomov Str. 64, Pavlodar 140008, Kazakhstan
Nurlybek Shakaevich Zhumataev: Department of Electrical Power Engineering, Faculty of Energetics, Toraighyrov University, Lomov Str. 64, Pavlodar 140008, Kazakhstan
Aliya Kairullovna Zhumadirova: Department of Electrical Power Engineering, Faculty of Energetics, Toraighyrov University, Lomov Str. 64, Pavlodar 140008, Kazakhstan
Damir Serikovich Narynbayev: Department of Electrical Power Engineering, Faculty of Energetics, Toraighyrov University, Lomov Str. 64, Pavlodar 140008, Kazakhstan

Energies, 2024, vol. 17, issue 16, 1-29

Abstract: Construction of relay protections of electrical installations without the use of bulky metal- and insulation-intensive measuring current transformers (CTs) was repeatedly discussed at Conferences of the International Council on Large Electric Systems (CIGRE) as a challenge for the electric power industry. In the article, the authors present resource-saving reed switch current protection for 6–10-kV electrical installations connected to switchgear cells, which is an alternative to traditional protections. The scientific novelty of the work lies in (a) reed switch protection design on the basis of measuring the magnetic induction in different modes and at different points inside a cell, and we prove that inductance values are sufficient to detect phase short-circuits in electrical installations fed from this cell and derive the dependence of the induction on the position of an inductance coil inside the cell; (b) proven possibility of using the simplest formula of the Biot–Savart law for the calculations if the experimentally obtained coefficients are introduced into it; (c) development of a technique for calculating the parameters of the overcurrent protection based on reed switches. Experimental results are presented in graphical form and clearly show the points of EMS maxima and minima. Settings for resource-saving current protection are selected and a feasibility study of the effectiveness of resource-saving overcurrent protection is carried out. A technical and economical assessment of the efficiency of the suggested overcurrent protection is conducted.

Keywords: inductance coil; reed switch; induction; resource saving; overcurrent protection (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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