OPTIMISATION OF 110 kV NETWORK OPERATING MODES USING REACTIVE POWER FLOW CONTROL
Аннотация
This research paper examines the optimisation of steady-state operating conditions in 110 kV high-voltage power networks, using the Astana power hub as a case study. The subject of the study is a section of the 110 kV network comprising 12 key substations equipped with various types of power transformers. The study calculates steady-state conditions for winter and summer peak load periods using the ‘moment rule’ method for closed loop circuits, which enabled the power distribution across network sections to be determined with sufficient accuracy. Based on these calculations, active and reactive power flows were determined, and transmission losses and voltage levels at load nodes were estimated. The most heavily loaded sections of the network, characterised by a drop in voltage levels during peak load periods, were identified. The data obtained provided a basis for demonstrating the need for local reactive power control to normalise system operation. The feasibility of controlling reactive power flows was established as an optimisation method. It is proposed to install compensation devices with a capacity of 4–6 Mvar at nodes with the highest reactive power consumption. Simulation results showed that the use of compensation devices allows voltage levels to be stabilised and active power losses in the network to be reduced.
Автор
G.Suleymenova
A. Uakhitova
B.Bainiyazov
DOI
https://doi.org/10.48081/BTOUEn3.2026/512-525
Ключевые слова
optimisation, control, electrical network, losses, operating modes, methods, reactive power, compensation.
Год
2026
Номер
Выпуск 3