Regards: You can make one of that length using a network cable and USB tips. Of the 4 pairs of cables you will use 2 pairs for the negative (you must connect the negative pin with the outside of the USB), a pair for the positive and the last pair for the connections D + and D-. You must ensure the correct connection at the ends to avoid greater evils. If the very high current consumption will not work for you, because of the voltage losses.