Fuzzy Logic Based Reactive Power Control
DOI:
https://doi.org/10.24160/0013-5380-2026-9-26-35Keywords:
fuzzy logic, OLTC, reactive power compensation, voltage regulation, 110/10 kV substation, ANFIS, capacitor bank, distribution electrical network, electric power qualityAbstract
The article proposes a fuzzy logic based reactive power control method aimed at reducing the excessive number of OLTC stages switching operations at 110/10 kV distribution substations. In the control system, the voltage deviation and the rate of its change are taken as input parameters, and the reactive power compensation level is determined based on the Mamdani algorithm. To conduct the research, a MATLAB/Simulink model was developed that describes the intelligent voltage regulation process in a 110/10 kV electric network. The model includes a 40 MV•A 110/10 kV transformer with a 19-stage OLTC, a 10 kV bus, a load, a power transmission line, a reactive power compensator, and a fuzzy logic controller. The study results have shown that the use of fuzzy logic based adaptive control makes it possible to enhance voltage stability, reduce the reactive power flow and decrease the number of OLTS stages daily switching operations from 14 to 5. The proposed approach helps reduce the transformer’s mechanical wear, extend its service life, and stabilize the electric power quality indicators in accordance with the requirements of GOST 32144-2013.
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