Abstract
With the wide application of new energy power generation and pumping unit frequency converter driving, the phenomenon of multiple converters installed has been formed in oilfield power grid. The interaction characteristics of multiple converters are vital to the stability and safety for oilfield production. This article introduces firstlythe typical topology of multiple converters based on generation and consumption in oilfield power grid. The different combination forms of converters and the influence of DC bus control performance in the DC side are researched. Then interaction characteristics are analyzed based on the peak value of transient current and voltage, and the protection setting value. In order to improve the stability and safety of the system, the layout principle of the converters is proposed. Moreover, the ultimate capacity output principle is proposed to reduce the voltage and current stress. Finally, the correctness and effectiveness of the above are demonstrated through simulation and analyses.
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