Zhanat Issabekov

@tou.edu.kz

Toraigyrov University

Zhanat Issabekov


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https://researchid.co/zhanatissabekov
Zhanat Issabekov is Professor in the Department of Automation and Control at Toraighyrov University, Pavlodar, Kazakhstan. In 2018, he was awarded a PhD in Electric Power Engineering after successfully defending his doctoral dissertation. He began his academic career in 2003 as a senior lecturer at the Department of Computer Systems and Automation at S. Toraighyrov Pavlodar State University. In 2004, he joined the Department of Computer Engineering and Programming, and since 2012, he has been working as a senior lecturer at the Department of Automation and Control. He is the author of more than 45 scientific publications. His research interests include automation systems, control theory, electric power systems, and intelligent control technologies. He can be contacted at email:

RESEARCH, TEACHING, or OTHER INTERESTS

Engineering, Energy Engineering and Power Technology, Electrical and Electronic Engineering
13

Scopus Publications

48

Scholar Citations

5

Scholar h-index

2

Scholar i10-index

Scopus Publications

  • Diakoptics Method for Calculating Generalized Parameters of Large Power Systems
    Laura Yesmakhanova, Assemgul Zhantlessova, Bibigul Issabekova, Zhanat Issabekov, Dauren Akhmetbaev, Mikhail Yaroslavtsev
    Eng, 2026
    The growing number of electricity consumers and unstable generation by renewable energy sources (RESs) decrease the efficiency of traditional techniques for modeling large power systems. The diakoptics method is based on structuring a system into subsystems and enables reducing the amount of computation by 2.9 times. However, its classical implementations require successive (iterative) expansion of a scheme, which increases computational time for scaling. This method decomposes a complex system into interacting subsystems with different generation and load characteristics. Generalized parameters are independently calculated for each subsystem and then integrated into the total solution. This significantly reduces the amount of computation, simplifies simulation, optimizes control with allowance for local characteristics, and analyzes intersystem connections to minimize losses and improve stability. This paper suggests not just another Kron calculation but a modification of the diakoptics method, which enables avoiding multiple step-by-step redesigns of a grid by generating generalized parameters based on the complete graph of a system, which significantly reduces computational costs when analyzing large power systems. The method simultaneously considers the entire grid topology. This eliminates successive iterations: if a classical approach requires 13 iterations for a network with 11 nodes and 21 branches, the suggested method performs computation in a single computational cycle. The results show high computational efficiency and practical applicability of the method for large power systems. The suggested approach opens up possibilities for reliability analysis, including redundancy assessment and identification of vulnerable elements, which contributes to an increase in the power system stability under conditions of RES integration.
  • Absolutely Selective Single-Phase Ground-Fault Protection Systems for Bunched Cable Lines
    Aleksandr Novozhilov, Zhanat Issabekov, Timofey Novozhilov, Bibigul Issabekova, Lyazzat Tyulyugenova
    Electricity, 2026
    Electrical energy in urban and industrial power supply networks is mainly transmitted through 6–10-kV cable networks with an isolated neutral, where most lines are made as bunches of cables. Up to 75–90% of electrical faults in these cable networks belong to single-phase ground faults (SGFs), which can cause more severe accidents accompanied by significant economic damage. Widely known simple and directional protections against SGFs are relatively selective and, hence, often incapable of properly responding to SGFs in a network with such lines and detecting a cable with SGFs in the bunch of a damaged line. These disadvantages can be eliminated by using new, simple, and inexpensive, absolutely selective protections capable of detecting a cable with SGFs in a damaged line. We suggest the techniques and devices based on zero-sequence current transformers and ring measuring converters for building up such protection systems. The methods for calculating zero-sequence currents in cables of a bunched cable line, depending on the SGF point and the currents in the responding elements, are developed, as well as a procedure for determining a damaged cable and methods for estimating the responding element thresholds and the length of the protection dead zone.
  • Improving the energy efficiency of two-speed motors through the use of new pole-switched windings
    Zhanat Issabekov, Dauletbek Rismukhamedov, Khusniddin Shamsutdionov, Shakhobiddin Husanov, Sabit Rismukhamedov, Bibigul Issabekova, Assemgul Zhantlessova
    International Journal of Power Electronics and Drive Systems, 2026
    This article addresses the design and manufacturing of two-speed asynchronous motors with pole-changing windings. The need for developing two-speed motors with a single pole-changing winding is justified from the standpoint of energy and resource efficiency, as well as improved starting performance of high-power electric drives. An analysis of existing pole-changing winding designs is presented, highlighting their practical limitations in industrial applications. A new pole-changing winding with a 4/2 pole ratio and 48 stator slots was developed using the discrete spatial functions method based on star–delta–double star configurations. The electromagnetic characteristics of the proposed winding were analyzed. Based on this design, a new 4A200L8/4U3 two-speed motor was manufactured and tested under production conditions at the energy motors plant. Experimental results show that at p 1 = 4 pole pairs the motor delivers P 2 = 20 kW with efficiency η = 87%, cos φ = 0.82, I 1 = 43 A at slip s = 2.35%, while at p 2 = 2 pole pairs it develops P 2 = 36 kW with efficiency η = 91.5%, cos φ = 0.906, I 1 = 66 A at slip s = 1.5%. The results confirm more efficient utilization of the active magnetic core at lower polarity and demonstrate the feasibility of implementing such motors for energy-saving applications in heavy-duty drives requiring two equivalent operating speeds.
  • Single-Phase Earth-Fault Protection of Power Cable of a Salt-Producing Floating Platform
    Aleksandr Novozhilov, Zhanat Issabekov, Timofey Novozhilov, Bibigul Issabekova, Lyazzat Tyulyugenova
    Energies, 2025
    In this paper, a method to improve the protection of a four-core power cable of a salt-producing floating platform equipped with an automatic breaker with an independent tripping mechanism is suggested. The use of this automatic breaker in combination with a suggested protection device ensures reliable protection of not only the power cables of the platform against all faults but also the personnel of the platform and animals on the reservoir banks against electric shock in the event of a single-phase ground fault in reservoir water. This would be possible due to a voltage sensor made in the form of a metal ring on the power cable and a relay; one terminal of the relay winding is connected to the voltage sensor by a single-core control cable, and the other to the neutral of a power source on the platform. The typically open contacts of this relay are connected to an electric circuit which includes a power source and a coil for an independent tripping mechanism of the automatic breaker. This design ensures reliable operation of the suggested protection device in the event of a single-phase ground fault in the power cable of the platform when underwater cable insulation is damaged.
  • Determination of Earth Faults in Cable Lines with Insulated Neutrals
    Assemgul Zhantlessova, Bibigul Issabekova, Zhanat Issabekov
    Proceedings 2025 International Ural Conference on Electrical Power Engineering Uralcon 2025, 2025
    The most frequently damaged elements of the electric grid are power lines. Depending on the type of damages in the lines they can be single-phase and multiphase. Since the most frequent types of damages are single-phase SC (short circuits), it is their determination that is in priority. In medium-voltage grids operating with insulated neutrals, single-phase SC is not short-circuit. Also, for overhead lines more than 90% of damages belong to the most common damages and cannot be eliminated by themselves. Single-phase SCs develop into multiphase short-circuits, causes emergency tripping, so the search for single phase-to-earth fault in cable lines should be carried out immediately after their occurrence.
  • Instrumental Research on the Voltage Harmonic Distortion Coefficient in the Modern 110 kV Urban Electric Network
    Assemgul Zhantlessova, Serik Zhumazhanov, Temirbolat Akimzhanov, Bibigul Issabekova, Zhanat Issabekov, Ali Mekhtiyev, Yelena Neshina
    International Journal on Energy Conversion, 2023
    The article deals with assessing the level of voltage non-sinusoidality in the electric network with voltage of 110 - 220 kV. By carrying out direct measurements at a fixed number of connections of urban substations on the high voltage side, the materials were collected for analyzing higher harmonic voltage components. The measurements were carried out in accordance with the requirements of this procedure and with participation of employees of the energy supply company as part of the planned energy audit activities. Based on the results of the analysis, it is stated that the permissible, and in some cases limiting values of the higher harmonic components of the voltage are exceeded. During the analysis, the practice of assessing the harmonic composition in foreign countries, such as the United States of America, was studied, where harmonics were taken into account not only in voltage but also in current. Based on the results obtained, the authors consider that the current standard that regulates the quality of electrical energy in the Republic of Kazakhstan and in the territory of the CIS countries does not fully meet the requirements of the current situation in the electric networks. The reason is the rapid growth of types of electrical receivers based on semiconductors, which is not fully taken into account in the current standard. The authors state the further growth of power receivers with a non-linear consumption characteristic, which will worsen the situation regarding the non-sinusoidal voltage.
  • IMPROVING THE METHOD OF CONTROLLING THE STRESS-STRAIN STATE OF STEEL STRUCTURES OF ELECTROMECHANICAL SYSTEMS
    Metalurgija, 2023
  • IDENTIFYING THE INFLUENCE OF THE SYSTEM AND MODE CHARACTERISTICS ON THE POWER LOSS MODE BASED IN 110 kV POWER GRIDS
    Temirbolat Akimzhanov, Yermek Sarsikeyev, Assemgul Zhantlessova, Serik Zhumazhanov, Zhanibek Baydulla, Bibigul Issabekova, Zhanat Issabekov, Ali Mekhtiyev, Yelena Neshina
    Eastern European Journal of Enterprise Technologies, 2023
    In this paper, the object of the research is 110 kV power grids of three regions of the Republic of Kazakhstan: Astana city, Turkestan region and Shymkent city, as well as West Kazakhstan region. Operators of the studied power grids have no idea about the real levels of voltage and current sinusoidality distortion coefficients, as well as about their relationship with other regime and system parameters of power grids. Similar problems may be faced by other grid companies that do not have the appropriate information and measurement infrastructure to monitor the modes of power grids in terms of voltage and current sinusoidality distortion. In the course of the present study, using portable three-phase power quantity and quality analyzers, it was possible to make daily measurements of mode parameters in 41 110 kV transmission lines with a length of 5 to 120 km. The results of measurements showed that in Astana city, the voltage quality is at a satisfactory level, but the distortion coefficient of sinusoidality of current reaches 39 % (the average level for 15 studied lines is 13.3 %) due to the high concentration of non-linear load of consumers. In the South of Kazakhstan, the voltage and current sinusoidality distortion coefficients are relatively moderate, but voltage drops are frequent (sometimes up to 10 % or more) due to the large distance between load centers and relatively high population density. In the power grids of Western Kazakhstan, voltage and current sinusoidality distortion coefficients have high levels (reach 14 % and 70 %, respectively) due to low network load with a large length of transmission lines. The analysis makes it possible to trace the relationship of voltage and current sinusoidality distortion coefficients with such regional characteristics as population density, nature of loads, power losses, voltage and current levels
  • Structures for mounting reed switches near the busbars of electrical installations with remote control of their position
    Zhanat B. Issabekov, Bauyrzhan E. Mashrapov, Dauren D. Issaberov, Gulnara N. Mashrapova
    Aip Conference Proceedings, 2021
    It is noted that in relay protection resource savings can be achieved by replacing current transformers with ferromagnetic cores with miniature current sensors, such as inductance coils, reed switches, etc. It is emphasized that special designs are required for their mounting near the busbars. Models of two such designs for mounting reed switches are proposed. The first differs from the known ones by the presence of a single stepper motor connected to a microcontroller, which makes it possible to remotely move the reed switch in the horizontal plane, and the second – two electric motors, which allows you to move the reed switches in the vertical plane. At the same time, the microcontroller is located in the relay compartment of the cell of the complete switchgear, which ensures the safety of service personnel. The method of regulating the position of reed switches in space using the proposed designs is described.
  • Configurations of 6-10 kV cable lines and types of cable damages
    Zhanat B. Issabekov, Alexandr N. Novozhilov, Bibigul B. Issabekova, Alibek Ye. Anarbayev
    Aip Conference Proceedings, 2021
    The article discusses the principles of electrical circuits formation and includes analysis, which showed that two-way feed ring and trunk networks are the most promising and efficient in technical and economic terms. It has also been found that, currently, in a closed configuration network in the normal operating mode of a network with two power sources, one of the lines must be disconnected. This is due to the impossibility to selectively trip a damaged line, in particular, with single phase-to-earth fault (SEF). It describes that the SEF is the main type of electrical damage in 6-10 kV cable networks.
  • Measuring bodies for distance protection that does not use current transformers
    Zhanat B. Issabekov, Mark Ya. Kletsel, Alexandr S. Barukin, Bauyrzhan E. Mashrapov
    Aip Conference Proceedings, 2021
  • Protection of a two-cable line from single phase-to-earth fault with absolute selectivity
    Zh. Issabekov, A. N. Novozhilov, T. A. Novozhilov, B. B. Issabekova
    News of the National Academy of Sciences of the Republic of Kazakhstan Series of Geology and Technical Sciences, 2018
  • Method to protect lines of two cables from single phase-to-earth fault
    A. Novozhilov, Zh. Issabekov, T. Novozhilov
    2016 2nd International Conference on Industrial Engineering Applications and Manufacturing Icieam 2016 Proceedings, 2016

RECENT SCHOLAR PUBLICATIONS

  • An IoT-Based Technique for Detecting Single-Phase Earth Faults in 6–35 kV Cable Lines Using Current Sensors
    L Yesmakhanova, Z Issabekov, B Issabekova, B Ordabayev, ...
    Eng 7 (6), 256 , 2026
    2026.0
  • Diakoptics Method for Calculating Generalized Parameters of Large Power Systems
    L Yesmakhanova, A Zhantlessova, B Issabekova, Z Issabekov, ...
    Eng 7 (4), 163 , 2026
    2026.0
    Citations: 1
  • Improving the energy efficiency of two-speed motors through the use of new pole-switched windings
    Z Issabekov, D Rismukhamedov, K Shamsutdinov, S Husanov, ...
    Int J Pow Elec & Dri Syst 17 (1), 195-210 , 2026
    2026.0
  • Absolutely Selective Single-Phase Ground-Fault Protection Systems for Bunched Cable Lines
    A Novozhilov, Z Issabekov, T Novozhilov, B Issabekova, L Tyulyugenova
    Electricity 7 (1), 2 , 2026
    2026.0
    Citations: 1
  • Single-Phase Earth-Fault Protection of Power Cable of a Salt-Producing Floating Platform
    A Novozhilov, Z Issabekov, T Novozhilov, B Issabekova, L Tyulyugenova
    Energies 18 (19), 5234 , 2025
    2025.0
    Citations: 2
  • Determination of Earth Faults in Cable Lines with Insulated Neutrals
    A Zhantlessova, B Issabekova, Z Issabekov
    2025 International Ural Conference on Electrical Power Engineering (UralCon … , 2025
    2025.0
    Citations: 1
  • IDENTIFYING THE INFLUENCE OF THE SYSTEM AND MODE CHARACTERISTICS ON THE POWER LOSS MODE BASED IN 110 kV POWER GRIDS.
    T Akimzhanov, Y Sarsikeyev, A Zhantlessova, S Zhumazhanov, ...
    Eastern-European Journal of Enterprise Technologies 126 (8) , 2023
    2023.0
    Citations: 5
  • Instrumental Research on the Voltage Harmonic Distortion Coefficient in the Modern 110 kV Urban Electric Network.
    A Zhantlessova, S Zhumazhanov, T Akimzhanov, B Issabekova, ...
    International Journal on Energy Conversion 11 (2) , 2023
    2023.0
    Citations: 5
  • International Journal on
    S Toumi, Y Amirat, M Benbouzid, E Elbouchikhi, Z Zhou, ...
    2023.0
  • Measuring bodies for distance protection that does not use current transformers
    ZB Issabekov, MY Kletsel, AS Barukin, BE Mashrapov
    AIP Conference Proceedings 2337 (1), 030003 , 2021
    2021.0
    Citations: 14
  • Configurations of 6-10 kV cable lines and types of cable damages
    ZB Issabekov, AN Novozhilov, BB Issabekova, AY Anarbayev
    AIP Conference Proceedings 2337 (1), 030002 , 2021
    2021.0
    Citations: 5
  • Structures for mounting reed switches near the busbars of electrical installations with remote control of their position
    ZB Issabekov, BE Mashrapov, DD Issaberov, GN Mashrapova
    AIP Conference Proceedings 2337 (1), 030004 , 2021
    2021.0
    Citations: 14
  • Zh. B. Issabekov", AN Novozhilov", TA Novozhilov “, BB Issabekova”
    CLF SINGLE

MOST CITED SCHOLAR PUBLICATIONS

  • Measuring bodies for distance protection that does not use current transformers
    ZB Issabekov, MY Kletsel, AS Barukin, BE Mashrapov
    AIP Conference Proceedings 2337 (1), 030003 , 2021
    2021.0
    Citations: 14
  • Structures for mounting reed switches near the busbars of electrical installations with remote control of their position
    ZB Issabekov, BE Mashrapov, DD Issaberov, GN Mashrapova
    AIP Conference Proceedings 2337 (1), 030004 , 2021
    2021.0
    Citations: 14
  • IDENTIFYING THE INFLUENCE OF THE SYSTEM AND MODE CHARACTERISTICS ON THE POWER LOSS MODE BASED IN 110 kV POWER GRIDS.
    T Akimzhanov, Y Sarsikeyev, A Zhantlessova, S Zhumazhanov, ...
    Eastern-European Journal of Enterprise Technologies 126 (8) , 2023
    2023.0
    Citations: 5
  • Instrumental Research on the Voltage Harmonic Distortion Coefficient in the Modern 110 kV Urban Electric Network.
    A Zhantlessova, S Zhumazhanov, T Akimzhanov, B Issabekova, ...
    International Journal on Energy Conversion 11 (2) , 2023
    2023.0
    Citations: 5
  • Configurations of 6-10 kV cable lines and types of cable damages
    ZB Issabekov, AN Novozhilov, BB Issabekova, AY Anarbayev
    AIP Conference Proceedings 2337 (1), 030002 , 2021
    2021.0
    Citations: 5
  • Single-Phase Earth-Fault Protection of Power Cable of a Salt-Producing Floating Platform
    A Novozhilov, Z Issabekov, T Novozhilov, B Issabekova, L Tyulyugenova
    Energies 18 (19), 5234 , 2025
    2025.0
    Citations: 2
  • Diakoptics Method for Calculating Generalized Parameters of Large Power Systems
    L Yesmakhanova, A Zhantlessova, B Issabekova, Z Issabekov, ...
    Eng 7 (4), 163 , 2026
    2026.0
    Citations: 1
  • Absolutely Selective Single-Phase Ground-Fault Protection Systems for Bunched Cable Lines
    A Novozhilov, Z Issabekov, T Novozhilov, B Issabekova, L Tyulyugenova
    Electricity 7 (1), 2 , 2026
    2026.0
    Citations: 1
  • Determination of Earth Faults in Cable Lines with Insulated Neutrals
    A Zhantlessova, B Issabekova, Z Issabekov
    2025 International Ural Conference on Electrical Power Engineering (UralCon … , 2025
    2025.0
    Citations: 1
  • An IoT-Based Technique for Detecting Single-Phase Earth Faults in 6–35 kV Cable Lines Using Current Sensors
    L Yesmakhanova, Z Issabekov, B Issabekova, B Ordabayev, ...
    Eng 7 (6), 256 , 2026
    2026.0
  • Improving the energy efficiency of two-speed motors through the use of new pole-switched windings
    Z Issabekov, D Rismukhamedov, K Shamsutdinov, S Husanov, ...
    Int J Pow Elec & Dri Syst 17 (1), 195-210 , 2026
    2026.0
  • International Journal on
    S Toumi, Y Amirat, M Benbouzid, E Elbouchikhi, Z Zhou, ...
    2023.0
  • Zh. B. Issabekov", AN Novozhilov", TA Novozhilov “, BB Issabekova”
    CLF SINGLE