Mine power management system

• US 9,507,360 B2
• Filed: 05/09/2012
• Issued: 11/29/2016
• Est. Priority Date: 05/10/2011
• Status: Active Grant

• Current Assignee: Komatsu Ltd.
• Original Assignee: Komatsu Ltd.
• Inventors: Nagai, Takao, Kajino, Katsuhiro, Tojima, Masanori, Yamashita, Kouichi, Sudou, Tsugio, Takeda, Koji, Yanagida, Yasuhiro, Suzuki, Yasuyuki
• Primary Examiner(s): BARNES-BULLOCK, CRYSTAL JOY
• Application Number:
  US14/110,524
• Publication Number:
  US 20140032006A1
• Time in Patent Office: 1,665 Days
• US Class Current: 1/1
• CPC Class Codes: B60L 1/003 to auxiliary motors, e.g. for pumps, compressors
• CPC Class Codes: B60L 15/2009 for braking
• CPC Class Codes: B60L 2200/40 Working vehicles
• CPC Class Codes: B60L 2210/40 DC to AC converters
• CPC Class Codes: B60L 2240/12 Speed
• CPC Class Codes: B60L 2240/34 Cabin temperature
• CPC Class Codes: B60L 2240/40 Drive Train control parameters
• CPC Class Codes: B60L 2240/421 Speed
• CPC Class Codes: B60L 2240/622 by satellite navigation
• CPC Class Codes: B60L 2250/16 by display
• CPC Class Codes: B60L 3/0046 relating to electric energy storage systems, e.g. batteries or capacitors
• CPC Class Codes: B60L 3/04 Cutting off the power supply under fault conditions protective devices and circuit arrangements in general H01H; H02H
• CPC Class Codes: B60L 50/40 using propulsion power supplied by capacitors
• CPC Class Codes: B60L 50/61 by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
• CPC Class Codes: B60L 50/62 charged by low-power generators primarily intended to support the batteries, e.g. range extenders
• CPC Class Codes: B60L 7/14 for vehicles propelled by ac motors
• CPC Class Codes: B60L 9/08 fed from ac supply lines
• CPC Class Codes: B60M 3/06 Arrangements for consuming regenerative power
• CPC Class Codes: B60M 7/00 Power lines or rails specially adapted for electrically-propelled vehicles of special types, e.g. suspension tramway, ropeway, underground railway
• CPC Class Codes: E21F 17/06 Distributing electric power; Cable networks; Conduits for cables circuit arrangements for supplying or distributing electric power in general H02J
• CPC Class Codes: G05F 1/66 : Regulating electric power
• CPC Class Codes: G06Q 50/02 : Agriculture; Fishing; Forestry; Mining
• CPC Class Codes: G06Q 50/06 : Energy or water supply
• CPC Class Codes: H02J 4/00 : Circuit arrangements for mains or distribution networks not specified as ac or dc
• CPC Class Codes: Y02P 90/60 : Electric or hybrid propulsion means for production processes
• CPC Class Codes: Y02T 10/62 : Hybrid vehicles
• CPC Class Codes: Y02T 10/64 : Electric machine technologies in electromobility
• CPC Class Codes: Y02T 10/70 : Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 : Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 10/72 : Electric energy management in electromobility
• CPC Class Codes: Y02T 90/16 : Information or communication technologies improving the operation of electric vehicles

Abstract

A mine power management system includes: a first power line provided at an ascent and configured to exchange electric power with an ascending vehicle traveling on the ascent; a second power line provided at a descent and configured to exchange electric power with a descending vehicle traveling on the descent; and a power supply and storage apparatus configured to exchange electric power at least between the first power line and the second power line.

Claims

1. A mine power management system comprising:

a first power line provided at an ascent and configured to exchange electric power with an ascending vehicle traveling on the ascent;

a second power line provided at a descent and configured to exchange electric power with a descending vehicle traveling on the descent;

a power supply and storage apparatus configured to exchange electric power at least between the first power line and the second power line; and

an electric power control unit configured to control electric power allocation at least among a machine, the ascending vehicle, and the descending vehicle so that a total electric power consumed by the machine, the ascending vehicle, and the descending vehicle that exchange electric power with the power supply and storage apparatus is equal to or less than a total electric power generated by the machine, the ascending vehicle, and the descending vehicle.

2. The mine power management system according to claim 1, wherein the electric power control unit controls the electric power allocation by adjusting allocation between the number of a plurality of the ascending vehicles and the number of a plurality of the descending vehicles.

3. The mine power management system according to claim 2, wherein a sum total of heights of a plurality of the ascents where the first power line is provided and a sum total of heights of a plurality of the descents where the second power line is provided are within ±

10% with respect to an average value of the sum totals.

4. The mine power management system according to claim 2, wherein a sum total of heights of a plurality of the descents where the second power line is provided is greater than a sum total of heights of a plurality of the ascents where the first power line is provided.

5. The mine power management system according to claim 1, wherein when the total electric power consumed by the machine, the ascending vehicle, and the descending vehicle is greater than the total electric power generated by the machine, the ascending vehicle, and the descending vehicle, the electric power control unit reduces at least one of power consumption of at least a part of a plurality of the ascending vehicles, power consumption of at least a part of a plurality of the descending vehicles, and power consumption of at least a part of a plurality of the machines.

6. The mine power management system according to claim 5, wherein the electric power control unit reduces at least one of the power consumption of the machines, the power consumption of the ascending vehicles, and the power consumption of the descending vehicles in order of lower priority levels.

7. The mine power management system according to claim 6, wherein a sum total of heights of a plurality of the ascents where the first power line is provided and a sum total of heights of a plurality of the descents where the second power line is provided are within ±

10% with respect to an average value of the sum totals.

8. The mine power management system according to claim 6, wherein a sum total of heights of a plurality of the descents where the second power line is provided is greater than a sum total of heights of a plurality of the ascents where the first power line is provided.

9. The mine power management system according to claim 5, wherein a sum total of heights of a plurality of the ascents where the first power line is provided and a sum total of heights of a plurality of the descents where the second power line is provided are within ±

10% with respect to an average value of the sum totals.

10. The mine power management system according to claim 5, wherein a sum total of heights of a plurality of the descents where the second power line is provided is greater than a sum total of heights of a plurality of the ascents where the first power line is provided.

11. The mine power management system according to claim 1, wherein when the total electric power consumed by the machine, the ascending vehicle, and the descending vehicle is greater than the total electric power generated by the machine, the ascending vehicle, and the descending vehicle, the electric power control unit supplies a shortage in the electric power from the power supply and storage apparatus.

12. The mine power management system according to claim 11, wherein a sum total of heights of a plurality of the ascents where the first power line is provided and a sum total of heights of a plurality of the descents where the second power line is provided are within ±

10% with respect to an average value of the sum totals.

13. The mine power management system according to claim 11, wherein a sum total of heights of a plurality of the descents where the second power line is provided is greater than a sum total of heights of a plurality of the ascents where the first power line is provided.

14. The mine power management system according to claim 1, wherein when the descending vehicle includes a generator, the electric power control unit supplies a shortage in the electric power from the generator of the descending vehicle when the total electric power consumed by the machine, the ascending vehicle, and the descending vehicle is greater than the total electric power generated by the machine, the ascending vehicle, and the descending vehicle.

15. The mine power management system according to claim 14, wherein a sum total of heights of a plurality of the ascents where the first power line is provided and a sum total of heights of a plurality of the descents where the second power line is provided are within ±

10% with respect to an average value of the sum totals.

16. The mine power management system according to claim 14, wherein a sum total of heights of a plurality of the descents where the second power line is provided is greater than a sum total of heights of a plurality of the ascents where the first power line is provided.

17. The mine power management system according to claim 1, wherein a sum total of heights of a plurality of the ascents where the first power line is provided and a sum total of heights of a plurality of the descents where the second power line is provided are within ±

10% with respect to an average value of the sum totals.

18. The mine power management system according to claim 1, wherein a sum total of heights of a plurality of the descents where the second power line is provided is greater than a sum total of heights of a plurality of the ascents where the first power line is provided.

19. A mine power management system comprising:

a first power line provided at an ascent and configured to exchange electric power with an ascending vehicle traveling on the ascent;

a second power line provided at a descent and configured to exchange electric power with a descending vehicle traveling on the descent; and

a power supply and storage apparatus configured to exchange electric power at least between the first power line and the second power line,

wherein a sum total of heights of a plurality of the ascents where the first power line is provided and a sum total of heights of a plurality of the descents where the second power line is provided are within ±

10% with respect to an average value of the sum totals.

20. A mine power management system comprising:

a first power line provided at an ascent and configured to exchange electric power with an ascending vehicle traveling on the ascent;

a second power line provided at a descent and configured to exchange electric power with a descending vehicle traveling on the descent; and

a power supply and storage apparatus configured to exchange electric power at least between the first power line and the second power line,

wherein a sum total of heights of a plurality of the descents where the second power line is provided is greater than a sum total of heights of a plurality of the ascents where the first power line is provided.