Long-distance Medium Voltage DC Transmission System for Coal Mine
A direct current transmission, long-distance technology, applied in the direction of converting AC power input to DC power output, conversion equipment and electrical components that can be converted to DC without intermediate conversion, and can solve problems such as large terminal voltage drop and large line loss , to achieve the effect of easy control, low construction cost and cost, and low loss
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[0055] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.
[0056] Such as Figure 1 to Figure 22 As shown, the long-distance medium-voltage DC power transmission device under the coal mine provided by the present invention includes an AC power grid, a front-end power electronic rectifier device, a medium-voltage DC power transmission device, and a terminal power electronic inverter device;
[0057] Among them, the AC power grid is a relatively independent coal mine power supply network; the front-end power electronic rectification device includes a front-end AC...
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