CONTROL, PROTECTION AND POWER MANAGEMENT SYSTEM FOR AN ENERGY STORAGE SYSTEM

• US 20140354234A1
• Filed: 01/17/2013
• Published: 12/04/2014
• Est. Priority Date: 01/17/2012
• Status: Active Grant

• Current Assignee: eCAMION Inc.
• Original Assignee: eCAMION Inc.
• Inventors: Sudan, Himanshu, Pizzurro, Carmine, Iravani, Reza, Graovac, Milan
• Granted Patent: US 9,979,202 B2
• Time in Patent Office: Days
• US Class Current: 320/127
• CPC Class Codes: H02J 13/00007 using the power network as support for the transmission
• CPC Class Codes: H02J 13/00034 the elements or equipment being or involving an electric power substation
• CPC Class Codes: H02J 2207/40 adapted for charging from various sources, e.g. AC, DC or multivoltage
• CPC Class Codes: H02J 3/28 Arrangements for balancing of the load in a network by storage of energy
• CPC Class Codes: H02J 4/00 Circuit arrangements for mains or distribution networks not specified as ac or dc
• CPC Class Codes: H02J 7/34 Parallel operation in networks using both storage and other dc sources, e.g. providing buffering H02J7/14 takes precedence
• CPC Class Codes: Y02E 60/00 Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• CPC Class Codes: Y04S 10/14 Energy storage units

Abstract

A control, protection and power management system for an energy storage system, comprises an interface configured to communicate and provide energy exchange with a host power system, a local load, and the energy storage system, and processing structure configured to receive signals from the host power system and the energy storage system, to determine a mode of operation of the energy storage system and to provide control, protection and power management to the energy storage system.

Claims

1. A control, protection and power management system for an energy storage system, comprising:

an interface configured to communicate and provide energy exchange with a host power system, a local load, and the energy storage system; and

processing structure configured to receive signals from the host power system and the energy storage system, to determine a mode of operation of the energy storage system and to provide control, protection and power management to the energy storage system.

2. The control, protection and energy management system of claim 1 wherein the mode of operation of the energy storage system is one of an active mode, an injection mode, an absorption mode, a reactive mode, a filter mode, and an inactive mode.

3. The control, protection and energy management system of claim 2 wherein the energy storage system comprises a plurality of battery modules.

4. The control, protection and energy management system of claim 2 wherein the battery modules are lithium-ion battery modules.

5. The control, protection and energy management system of claim 3 wherein during operation in the active mode, the energy storage system provides power control.

6. The control, protection and energy management system of claim 3 wherein during operation in the injection mode, the energy storage system injects reactive power into the host power system and charges the batteries.

7. The control, protection and energy management system of claim 3 wherein during operation in the absorption mode, the energy storage system absorbs reactive power from the host power system and discharges the batteries.

8. The control, protection and energy management system of claim 3 wherein during operation in the reactive mode, the energy storage system provides power control.

9. The control, protection and energy management system of claim 3 wherein during operation in the filter mode, the energy storage system operates as an active filter.

10. The control, protection and energy management system of claim 3 wherein during operation in the inactive mode, the energy storage system operates is inactive.

11. The control, protection and energy management system of claim 1 wherein the host power system comprises a transmission grid and a distribution grid.

12. The control, protection and energy management system of claim 11 wherein the processing structure is further configured to determine if the distribution system is operating in one of an islanded mode and a grid-connected mode.

13. The control, protection and energy management system of claim 1 wherein the processing structure is further configured to provide islanding detection.

14. The control, protection and energy management system of claim 13 wherein the islanding detection comprises detecting separation of the energy storage system and the local load from the host power system.

15. The control, protection and energy management system of claim 13 wherein the islanding detection comprises detecting separation of the energy storage system, the local load and a portion of the host power system from the rest of the host power system.

16. A method for providing control, protection and power management for an energy storage system, the method comprising:

communicating and providing energy exchange with a host power system, a local load and the energy storage system via an interface;

receiving signals from the host power system and the energy storage system; and

processing the received signals to determine a mode of operation of the energy storage system and to provide control, protection and power management to the energy storage system.

17. The method of claim 16 wherein the mode of operation of the energy storage system is one of an active mode, an injection mode, an absorption mode, a reactive mode, a filter mode, and an inactive mode.

18. The method of claim 16 farther comprising detecting an islanding mode by detecting separation of the energy storage system and the local load from the host power system.

19. The method of claim 16 further comprising detecting an islanding mode by detecting separation of the energy storage system, the local load and a portion of the host power system from the rest of the host power system.