Recloser-Based Decentralized Control of the Grid with Distributed Generation in the Lahsh District of the Rasht Grid in Tajikistan, Central Asia

Anvari Ghulomzoda, Aminjon Gulakhmadov, Alexander Fishov, Murodbek Safaraliev, Xi Chen, Khusrav Rasulzoda, Kamol Gulyamov and Javod Ahyoev
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Anvari Ghulomzoda: Department of Automated Electric Power Systems, Novosibirsk State Technical University, Novosibirsk 630073, Russia
Aminjon Gulakhmadov: Research Center for Ecology and Environment of Central Asia, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
Alexander Fishov: Department of Automated Electric Power Systems, Novosibirsk State Technical University, Novosibirsk 630073, Russia
Murodbek Safaraliev: Department of Automated Electrical Systems, Ural Federal University, Ekaterinburg 620002, Russia
Xi Chen: Research Center for Ecology and Environment of Central Asia, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
Khusrav Rasulzoda: Andritz Hydro GmbH, Vienna 1120, Austria
Kamol Gulyamov: Department of Electric Drive and Electric Machines, Tajik Technical University named after Academic M. S. Osimi, Dushanbe 734042, Tajikistan
Javod Ahyoev: Department of Electric Power Station, Tajik Technical University named after Academic M. S. Osimi, Dushanbe 734042, Tajikistan

Energies, 2020, vol. 13, issue 14, 1-18

Abstract: Small-scale power generation based on renewable energy sources is gaining popularity in distribution grids, creating new challenges for power system control. At the same time, remote consumers with their own small-scale generation still have low reliability of power supply and poor power quality, due to the lack of proper technology for grid control when the main power supply is lost. Today, there is a global trend in the transition from a power supply with centralized control to a decentralized one, which has led to the Microgrid concept. A microgrid is an intelligent automated system that can reconfigure by itself, maintain the power balance, and distribute power flows. The main purpose of this paper is to study the method of control using reclosers in the Lahsh district of the Rasht grid in Tajikistan with distributed small generation. Based on modified reclosers, a method of decentralized synchronization and restoration of the grid normal operation after the loss of the main power source was proposed. In order to assess the stable operation of small hydropower plants under disturbances, the transients caused by proactive automatic islanding (PAI) and restoration of the interconnection between the microgrid and the main grid are shown. Rustab software, as one of the multifunctional software applications in the field of power systems transients study, was used for simulation purposes. Based on the simulation results, it can be concluded that under disturbances, the proposed method had a positive effect on the stability of small hydropower plants, which are owned and dispatched by the Rasht grid. Moreover, the proposed method sufficiently ensures the quality of the supplied power and improves the reliability of power supply in the Lahsh district of Tajikistan.

Keywords: decentralized control; small hydropower plants; microgrid; emergency control; recloser; synchronous coupler; power systems stability (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: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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