Power distribution device, power distribution trailer, electric drive system and operation method thereof

Patent metadata

Field	Value
Publication number	US-11888294-B2
Application number	US-202117245989-A
Country	US
Kind code	B2
Filing date	Apr 30, 2021
Priority date	Mar 10, 2021
Publication date	Jan 30, 2024
Grant date	Jan 30, 2024

Abstract

A power distribution device, a power distribution trailer, an electric drive system and an operation method of the electric drive system are provided, the power distribution device includes: a starting power source, a switchgear room, and a tool room sequentially arranged along a first direction, the switchgear room includes a power inlet-line cabinet and a load feed outlet-line cabinet that are sequentially arranged along the first direction; at least one of the power inlet-line cabinet and the load feed outlet-line cabinet is a gas insulated switch cabinet, a cable terminal of at least one gas insulated switch cabinet is provided with a cable crimping copper bar, the gas insulated switch cabinet is matched with the cable crimping copper bar, a common cold shrinkable terminal connector can be combined with the cable crimping copper bar to realize the connection of an external device to the gas insulated switch cabinet through the cold shrinkable terminal connector.

First claim

What is claimed is:

1. A power distribution device, comprising: a starting power source, a switchgear room, and a tool room sequentially arranged along a first direction, wherein:
the switchgear room comprises a power inlet-line cabinet and a load feed outlet-line cabinet that are sequentially arranged along the first direction;
at least one of the power inlet-line cabinet and the load feed outlet-line cabinet is a gas insulated switch cabinet, and a cable terminal of at least one gas insulated switch cabinet is provided with a cable crimping copper bar.

2. The power distribution device according to claim 1 , wherein the power inlet-line cabinet comprises a first power inlet-line cabinet and a second power inlet-line cabinet; and the load feed outlet-line cabinet comprises a first load feed outlet-line cabinet, a second load feed outlet-line cabinet, and a third load feed outlet-line cabinet.

3. The power distribution device according to claim 2 , wherein the first power inlet-line cabinet is the gas insulated switch cabinet, a cable terminal of the first power inlet-line cabinet comprises a first cable terminal and a second cable terminal that are arranged oppositely along a second direction, the first power inlet-line cabinet is configured to be connected to a first power source through the first cable terminal or the second cable terminal, and the second direction is parallel to a plane where the switchgear room is located and is perpendicular to the first direction.

4. The power distribution device according to claim 3 , wherein at least one of the first cable terminal and the second cable terminal is provided with the cable crimping copper bar, and the first power inlet-line cabinet is configured to be electrically connected to the first power source through the cable crimping copper bar.

5. The power distribution device according to claim 3 , wherein the second power inlet-line cabinet is the gas insulated switch cabinet, and a cable terminal of the second power inlet-line cabinet comprises a third cable terminal and a fourth cable terminal that are arranged oppositely along the second direction, the second power inlet-line cabinet is configured to be connected to a second power source through the third cable terminal or the fourth cable terminal.

6. The power distribution device according to claim 5 , wherein at least one of the third cable terminal and the fourth cable terminal is provided with the cable crimping copper bar, and the second power inlet-line cabinet is configured to be electrically connected to the second power source through the cable crimping copper bar.

7. The power distribution device according to claim 5 , wherein:
each of the first load feed outlet-line cabinet, the second load teed outlet-line cabinet, the third load feed outlet-line cabinet is the gas insulated switch cabinet;
each of a cable terminal of the first load feed outlet-line cabinet, a cable terminal of the second load feed outlet-line cabinet, and a cable terminal of the third load feed outlet-line cabinet is provided with the cable crimping copper bar, and is configured to be electrically connected to a load equipment through the cable crimping copper bar.

8. The power distribution device according to claim 1 , further comprising at least one of a temperature adjustment component and an alarm component in the switchgear room, wherein:
the temperature adjustment component is configured to adjust temperature of the switchgear room; and
the alarm component is configured to generate an alarm signal in a case where a fire occurs.

9. The power distribution device according to claim 1 , wherein the tool room is a cable storage room, the cable storage room has a plurality of cables and a cable reel, the plurality of cables are on a same cable reel, the cable reel is provided with a partition, the partition separates the plurality of cables, and fixes a cable terminal of each of the plurality of cables.

10. The power distribution device according to claim 1 , further comprising a bus-line voltage mutual inductor cabinet, wherein the power inlet-line cabinet and the load feed outlet-line cabinet are both provided with a protection relay, and the bus-line voltage mutual inductor cabinet is configured to provide voltage signals to the protection relays of the power inlet-line cabinet and the load feed outlet-line cabinet.

11. A power distribution trailer, comprising: the power distribution device according to claim 1 and a movable trailer, wherein the power distribution device is on a bearing surface of the movable trailer.

12. An electric drive system, comprising the power distribution trailer according to claim 11 , a first power source, and a load equipment, wherein the first power source is on a first side surface of the power distribution trailer, and the load equipment is on a second side surface of the distribution trailer, the first side surface and the second side surface are opposite surfaces.

13. The power distribution device according to claim 12 , further comprising a second power source, wherein the second power source is on the movable trailer and on a side of the starting power source away from the switchgear room.

14. The power distribution device according to claim 12 , wherein the load equipment comprises an electric drive fracturing equipment.

15. An operation method of the electric drive system according to claim 12 , wherein:
the electric drive system further comprises a second power source, and the power inlet-line cabinet comprises a first power inlet-line cabinet connected to the first power source, and a second power source inlet-line cabinet connected to the second power source, the first power source comprises a first generator outlet switch and a first synchronization device, the first power inlet-line cabinet comprises a first power inlet-line circuit breaker, and the second power source comprises a second generator outlet switch and a second synchronization device, and the second power inlet-line cabinet comprises a second power inlet-line circuit breaker,
the operation method comprises: allowing at least one of the first power source and the second power to operate,
in a case where only the first power source operates: allowing the first generator outlet switch to be in an open state, closing the first power inlet-line circuit breaker, and then closing the first generator outlet switch synchronously through the first synchronous device.

16. The operation method according to claim 15 , wherein in a case where only the second power source operates: allowing the second generator outlet switch to be in an open state, closing the second power inlet-line circuit breaker, and then closing the second generator outlet switch synchronously through the second synchronous device.

17. The operation method according to claim 15 , wherein in a case where both the first power source and the second power source operate:
connecting a close state of the first power inlet-line circuit breaker in series with a close circuit of the first generator outlet switch, and connecting an open state of the first generator outlet switch in series with a close circuit of the first power inlet-line circuit breaker; and
connecting a close state of the second power inlet-line circuit breaker in series with a close circuit of the second generator outlet switch, and connecting an open state of the second generator outlet switch in series with a close circuit of the second power inlet-line circuit breaker.

18. The operation method according to claim 17 , wherein in a case where both

Assignees

• Yantai Jereh Petroleum Equipment & Technologies Co Ltd

Inventors

• Cao Huijuan
• Liu Yannan
• Kou Tao
• Wang Honly
• Wu Ligong
• Tian Dekun
• Zhou Libin

Classifications

• H02J2101/10

  Dispersed power generation using fossil fuels, e.g. diesel generators · CPC title

• H02J13/10

  characterised by displaying of information or by user interaction, e.g. supervisory control and data acquisition [SCADA] systems · CPC title

• H02J13/12

  Monitoring network conditions, e.g. electrical magnitudes or operational status · CPC title

• H02J13/13

  characterised by the transmission of data to equipment in the power network · CPC title

• H02B13/035 Primary

  Gas-insulated switchgear · CPC title