Electric power distribution for fracturing operation
Providing electric power distribution for fracturing operations comprising receiving, at a transport, electric power from a mobile source of electricity at a first voltage level and supplying, from the transport, the electric power to a fracturing pump transport at the first voltage level using only a first, single cable connection. The first voltage level falls within a range of 1,000 V to 35 kilovolts. The transport also supplies electric power to a second transport at the first voltage level using only a second, single cable connection.
1. An electric fracturing system for use with at least one power generation source providing source electric power, the system comprising:
a switch gear transport electrically connected to the at least one power generation source-and configured to receive the source electric power at a first voltage level;
a first electrical cable connected to the switch gear transport and configured to supply first electric power at the first voltage level from the switch gear transport; and
a first transport comprising: at least one first transformer, at least one first drive, and at least one first electric prime mover, each being disposed on the first transport,
wherein the at least one first transformer is electrically connected to the switch gear transport via only the first electrical cable, wherein the at least one first transformer is further electrically connected to the at least one first drive and to the at least one first electric prime mover,
wherein the at least one first transformer is configured to step down the first electric power received at the first voltage level to a second voltage level that powers the at least one first drive, the second voltage level being less than the first voltage level, and
wherein the at least one first drive is coupled to the at least one first electric prime mover.
2. The system of claim 1 , wherein the first voltage level falls within a range of 1000 volts to 35 kilovolts.
3. The system of claim 2 , wherein the first voltage level is set to be at 13.8 kilovolts.
4. The system of claim 1 , wherein the second voltage level falls within a range of 50 volts to 1000 volts.
5. The system of claim 1 , wherein the first transport is a blender-hydration transport that is electrically connected to the switch gear transport via the first electrical cable and without having a trailer connected in between the switch gear transport and the blender-hydration transport,
wherein the blender-hydration transport comprises a hydration tank and at least one blending tub mounted on a single transport frame, and
wherein the second voltage level further powers the at least one first electric prime mover.
6. The system of claim 1 , wherein the first transport is a blender transport that is electrically connected to the switch gear transport via the first electrical cable and without having a trailer connected in between the switch gear transport and the blender transport,
wherein the blender transport comprises at least one blending tub mounted on a blender transport frame, and
wherein the second voltage level further powers the at least one first electric prime mover.
7. The system of claim 6 , further comprising:
a second electrical cable connected to the switch gear transport and configured to supply second electric power at the first voltage level from the switch gear transport; and
a hydration transport electrically connected to the switch gear transport via the second electrical cable and without having a transport connected in between the switch gear transport and the hydration transport,
wherein the hydration transport comprises a hydration tank mounted on a hydration transport frame.
8. The system of claim 7 , wherein the hydration transport further comprises: a second transformer, at least one second drive, and at least one second electric prime mover, each being disposed on the hydration transport,
wherein the second transformer is electrically connected to the switch gear transport via only the second electrical cable, wherein the second transformer is further electrically connected to the at least one second drive and to the at least one second electric prime mover disposed on the hydration transport,
wherein the second transformer is configured to step down the second electric power received at the first voltage level to a third voltage level that powers the at least one second drive disposed on the hydration transport, the third voltage level being less than the first voltage level, and wherein the at least one second drive is coupled to the at least one second electric prime mover disposed on the hydration transport.
9. The system of claim 1 , wherein the first transport is a first fracturing pump transport that is electrically connected to the switch gear transport via the first electrical cable and without having a trailer connected in between the switch gear transport and the first fracturing pump transport,
wherein the first fracturing pump transport further comprises at least one pump which is disposed on the first fracturing pump transport,
wherein the at least one first transformer is further configured to step down the first electric power received at the first voltage level to an intermediate voltage level that powers the at least one first electric prime mover, wherein the intermediate voltage level is lower than the first voltage level and is higher than the second voltage level, and
wherein each of the at least one first drive and the at least one pump is coupled to the at least one first electric prime mover.
10. The system of claim 1 , wherein the switch gear transport comprises a third transformer electrically connected to an auxiliary source of power providing third electric power at the first voltage level, wherein the third transformer is configured to step down the first voltage level to a third voltage level that falls within a range of 50 volts to 1000 volts.
11. The system of claim 10 , further comprising a third electrical cable disposed in electrical communication with the third transformer and configured to supply electric power at the third voltage level from the switch gear transport,
wherein the third voltage level is at a voltage for igniting and starting the at least one power generation source.
12. The system of claim 1 , wherein the first electrical cable comprises fiber optic wires configured to communicate between the switch gear transport and the first transport.
13. A transport used with a switch gear for fracturing operations, the switch gear being remote from the transport and providing electric power to the transport via a cable, the transport comprising:
a transport frame;
an electric prime mover mounted on the transport frame;
a drive mounted on the transport frame and coupled to the electric prime mover;
an electrical connection disposed on the transport frame and configured to connect to the cable of the switch gear; and
at least one transformer coupled through the drive to the electric prime mover and mounted on the transport frame, the at least one transformer being in electrical communication with the electrical connection and being configured to: receive the electric power at a first voltage level from the switch gear via the cable, step down the electric power at the first voltage level to at least one second voltage level less than the first voltage level, and supply the electric power at the at least one second voltage level to the drive and to the electric prime mover.
14. The transport of claim 13 , further comprising a blending tub mounted on the transport frame and being operable with the electric prime mover.
15. The transport of claim 14 , further comprising a hydration tank mounted on the transport frame and disposed in fluid communication with the blending tub.
16. The transport of claim 13 , further comprising a pump mounted on the transport frame and coupled to the electric prime mover, the at least one transformer being configured to step down the electric power received at the first voltage level to an intermediate one and to a low one of the at least one second voltage level, the at least one transformer configured to supply the electric power at the low voltage level to the drive, the at least one transformer configured to supply the electric power at the intermediate voltage level through the drive to the electric prime mover to drive the pump.
17. The transport of claim 16 , wherein the first voltage level is at a 13.8 kilovolt level, the low voltage level falls within a range of 50 volts to 1000 volts, the intermediate voltage level is at a voltage in a range from the low voltage level to less than the first voltage level.
18. The transport of claim 16 , wherein the at least one transformer comprises one of:
a single transformer configured to step down the first voltage level to the intermediate voltage level and the low voltage level; and
a first transformer configured to step down to the intermediate voltage level and a second transformer configured to step down to the low voltage level.