Reactive power capacity allocation technology of shore-based power supply system of offshore oil production platform under different network topology reliability measures

To improve the economy of offshore oil production platform shore-based power transmission mode, the reactive power capacity allocation technology of offshore oil production platform shore-based power supply system based on different network topology reliability measures was proposed. The optimization model of power supply system network topology and the structure model of voltage source converter high voltage direct current transmission system were established, the start and stop control scheme of flexible direct current (DC) transmission system was designed, and the operation parameters of converter station and DC line were monitored in real time. The topological structure of offshore oil production platform shore-based power supply system is constructed, the mathematical model of flexible DC transmission system is established when the alternating current side voltage is balanced, the reactive power capacity configuration of offshore oil production platform shore-based power supply system is optimized, and the life cycle cost results are calculated. The experimental results show that the algorithm proposed in this paper can obtain the optimal solution only after 26 calculations, with high optimization efficiency and good convergence effect. Reactive capacity configuration of shore-based power supply system for offshore production platform can reduce failure rate and life cycle cost. The two-stage converter system with converter station is suitable for the situation that the export voltage level of offshore oil production platform is high and the voltage transmission level is relatively low. The two-stage converter system without converter station has the same two-stage structure as the two-stage converter system with converter station, and its reliability is higher than that with the converter station. image