Intelligent distributed energy storage system for demand side power management
First Claim
1. A distributed energy storage device that is configured for connection to one or more other distributed energy storage devices over an electrical distribution network, the distributed energy storage device comprising:
- an energy storage medium for storing energy;
a controller for controlling operation of the distributed energy storage device; and
a communications unit that is configured to enable the distributed energy storage device to communicate and exchange electricity transfer information with the other distributed energy storage devices, wherein the controller is configured to;
monitor a level of the energy stored in the energy storage medium,determine whether to initiate a transfer of electrical energy between the distributed energy storage device and one of the other distributed energy storage devices based on electricity transfer information exchanged through the communications unit with the one other distributed energy storage device and one or more of the monitored level of the energy stored in the energy storage medium and a forecasted energy demand, andin response to a determination to initiate a transfer of electrical energy between the distributed energy storage device and the one other distributed energy storage device, initiate a transfer of electrical energy between the distributed energy storage device and the one other distributed energy storage device over the electrical distribution network.
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Abstract
The current invention is an intelligent distributed energy storage system for demand side power management. It provides a system that can store electric energy close to the point of use or close to the distributed production for use when demanded by the users. These storage nodes can communicate with a central clearing entity to negotiate if the nodes should buy energy for storage, provide energy to the user above a given power level, or sell power back to the grid. The function will depend on the amount of energy stored in the node, the cost of the electric energy, the cost of the electric peak power, the price of resold electrical energy and power, plus the local usage.
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Citations
27 Claims
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1. A distributed energy storage device that is configured for connection to one or more other distributed energy storage devices over an electrical distribution network, the distributed energy storage device comprising:
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an energy storage medium for storing energy; a controller for controlling operation of the distributed energy storage device; and a communications unit that is configured to enable the distributed energy storage device to communicate and exchange electricity transfer information with the other distributed energy storage devices, wherein the controller is configured to; monitor a level of the energy stored in the energy storage medium, determine whether to initiate a transfer of electrical energy between the distributed energy storage device and one of the other distributed energy storage devices based on electricity transfer information exchanged through the communications unit with the one other distributed energy storage device and one or more of the monitored level of the energy stored in the energy storage medium and a forecasted energy demand, and in response to a determination to initiate a transfer of electrical energy between the distributed energy storage device and the one other distributed energy storage device, initiate a transfer of electrical energy between the distributed energy storage device and the one other distributed energy storage device over the electrical distribution network. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 20, 21, 22, 23, 24)
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14. A method for initiating a transfer of energy to a distributed energy storage device that is connected to one or more other distributed energy storage devices over an electrical distribution network, the method comprising:
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monitoring a level of energy stored by the distributed energy storage device; based on the level of energy stored by the distributed energy storage device and a forecasted energy demand, determining an energy need at the distributed energy storage device; broadcasting an energy request signal to the one or more other distributed energy storage devices in response to determining the energy need at the distributed energy storage device; receiving one or more offers of available energy from one or more corresponding distributed energy storage devices in response to the broadcasted energy request signal; selecting one offer of available energy from among the offers of available energy and identifying one other distributed energy storage device that corresponds to the selected offer of available energy; and in response to selecting the one offer of available energy and identifying the one other distributed energy storage device that corresponds to the selected offer of available energy, initiating a transfer of electrical energy from the one other distributed energy storage device to the distributed energy storage device over the electrical distribution network. - View Dependent Claims (15, 16, 17, 18)
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19. A distributed energy storage device that is configured for connection to one or more other distributed energy storage devices over an electrical distribution network, the distributed energy storage device comprising:
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means for monitoring a level of energy stored by the distributed energy storage device; means for determining an energy need at the distributed energy storage device based on the level of energy stored by the distributed energy storage device and a forecasted energy demand; means for broadcasting an energy request signal to the one or more other distributed energy storage devices in response to determining the energy need at the distributed energy storage device; means for receiving one or more offers of available energy from one or more corresponding distributed energy storage devices in response to the broadcasted energy request signal; means for selecting one offer of available energy from among the one or more offers of available energy and identifying one other distributed energy storage device that corresponds to the selected offer of available energy; and means for initiating a transfer of electrical energy from the one other distributed energy storage device to the distributed energy storage device over the electrical distribution in response to selecting the one offer of available energy and identifying the one other distributed energy storage device that corresponds to the selected offer of available energy. - View Dependent Claims (25)
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26. A distributed energy storage device that is configured for connection to one or more other distributed energy storage devices over an electrical distribution network, the distributed energy storage device comprising:
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an energy storage medium for storing energy; a controller for controlling operation of the distributed energy storage device and for determining an energy need at the distributed energy storage device; and a communications unit, wherein; the communications unit is configured to enable the distributed energy storage device to; broadcast an energy request signal to one or more of the other distributed energy storage devices in response to a determination of an energy need at the distributed energy storage device by the controller, and receive one or more energy offer signals from one or more of the other distributed energy storage devices in response to the broadcasted energy request signal; and the controller is configured to; select at least one of the received energy offer signals and identify at least one other distributed energy storage device that corresponds to the selected energy offer signal, and initiate a transfer of electrical energy from the one other distributed energy storage device to the distributed energy storage device over the electrical distribution network based on selecting the received energy offer signal and identifying the one other distributed energy storage device that corresponds to the selected energy offer signal.
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27. A distributed energy storage device that is configured for connection to one or more other distributed energy storage devices over an electrical distribution network, the distributed energy storage device comprising:
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an energy storage medium for storing energy; a controller for controlling operation of the distributed energy storage device; and a communications unit, wherein; the communications unit is configured to enable the distributed energy storage device to; broadcast an energy offer signal to one or more of the other distributed energy storage devices, and receive one or more energy acceptance signals from one or more of the other distributed energy storage devices in response to the broadcasted energy offer signal; and the controller is configured to; select at least one of the received energy acceptance signals and identify at least one other distributed energy storage device that corresponds to the selected energy acceptance signal, and initiate a transfer of electrical energy from the distributed energy storage device to the one other distributed energy storage device over the electrical distribution network based on selecting the received energy acceptance signal and identifying the one other distributed energy storage device that corresponds to the selected energy acceptance signal.
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Specification