Virtual inductive reactance control method for wind power generation in offshore platform wind power storage DC power supply system

Abstract

The invention relates to a wind power generation virtual impedance control method in an offshore platform wind-solar storage DC power supply system. An introduced algebraic expression determined by avirtual impedance coefficient is subtracted from output of a current controller of a rectifier to change a control strategy of the rectifier, thereby changing an equivalent model for a generator stator side and the rectifier. The method is achieved through a power loop and a current loop and through voltage vector orientation, coordinate system transformation and coordinate system decoupling methods. The wind power generation virtual impedance control method in the offshore platform wind-solar storage DC power supply system provided by the invention is applied to an offshore platform DC powersupply system; an adaptive change of input side impedance of the rectifier is achieved through the control strategy; the influence of power oscillation caused by intermittent sea breeze on DC bus voltage is reduced; and the wind power generation virtual impedance control method has the advantages of being simple in control algorithm, small in output current ripple and wide in application prospect.

Description

technical field [0001] The invention relates to the field of ships and ocean engineering and the field of new energy applications, in particular to a virtual inductive reactance control method for wind power generation in an offshore platform wind power storage DC power supply system. Background technique [0002] With the development of my country's marine economy and marine strategy, various offshore platforms such as marine observation instruments, marine surveys, and offshore drilling have become important ways to develop and utilize marine resources and obtain marine information. At present, the power supply forms of offshore platforms mainly include diesel generator power supply, high-voltage transmission, and combined power supply of high-voltage transmission and offshore wind power. independent power supply system. With the mature development of offshore wind power generation technology, it is possible to use ocean wind resources to provide independent power supply ...

AI Technical Summary

Problems solved by technology

Therefore, it is necessary to establish corresponding suppression methods for DC bus voltage fluctuations caused by power oscillations caused by intermittent sea breezes

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