Economical single-ended cascade hybrid DC transmission system with bidirectional flowing of flow
A two-way flow and hybrid DC technology, applied in the direction of power transmission AC network, etc., can solve the problems of response speed limitation, inability to quickly control DC voltage, and inability to control large-scale changes in DC voltage, so as to achieve the effect of maintaining stability
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[0045] The present invention will be further described below in conjunction with drawings and embodiments.
[0046] Examples such as figure 1 Shown; an economical single-ended cascaded hybrid DC power transmission system with two-way flow of power flow, which includes: a rectifier station and an inverter station, and the DC side of the rectifier station and the inverter station are connected by a DC transmission line;
[0047] The rectifier station and inverter station include thyristor converters LCC and modular converters connected to each other; the positive and negative poles of the rectifier station and inverter station are composed of thyristor converters (LCC) and modular converters in series , wherein the modular converter is composed of one or more modular multilevel converters (MMC) connected in parallel;
[0048] It also includes the sending-end AC grid and the receiving-end AC grid;
[0049] The thyristor converter LCC is connected to the AC power grid at the sen...
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