Grid regulation services for energy storage devices based on grid frequency
First Claim
1. A system, comprising:
- one or more processing units;
one or more non-transitory computer-readable storage media storing computer-readable instructions that when executed by the processing units determine a charging rate for a bi-directional charger using;
a logic module operable to determine the charging rate for the bi-directional charger using data representing one or more electrical characteristics of an electrical power distribution system, to maintain the determined charging rate below an upper charge limit and above a lower charge rate limit, and to select each of the respective charge limits based on an average charge rate of the bi-directional charger for a preceding time period; and
a data output module operable to send charger output rate data representing the determined charging rate.
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Accused Products
Abstract
Disclosed herein are representative embodiments of methods, apparatus, and systems for charging and discharging an energy storage device connected to an electrical power distribution system. In one exemplary embodiment, a controller monitors electrical characteristics of an electrical power distribution system and provides an output to a bi-directional charger causing the charger to charge or discharge an energy storage device (e.g., a battery in a plug-in hybrid electric vehicle (PHEV)). The controller can help stabilize the electrical power distribution system by increasing the charging rate when there is excess power in the electrical power distribution system (e.g., when the frequency of an AC power grid exceeds an average value), or by discharging power from the energy storage device to stabilize the grid when there is a shortage of power in the electrical power distribution system (e.g., when the frequency of an AC power grid is below an average value).
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Citations
50 Claims
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1. A system, comprising:
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one or more processing units; one or more non-transitory computer-readable storage media storing computer-readable instructions that when executed by the processing units determine a charging rate for a bi-directional charger using; a logic module operable to determine the charging rate for the bi-directional charger using data representing one or more electrical characteristics of an electrical power distribution system, to maintain the determined charging rate below an upper charge limit and above a lower charge rate limit, and to select each of the respective charge limits based on an average charge rate of the bi-directional charger for a preceding time period; and a data output module operable to send charger output rate data representing the determined charging rate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method, comprising:
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determining an initial charging rate for a bi-directional charger based on data representing one or more electrical characteristics of an electrical power distribution system, the electrical characteristic data including frequency data representing one or more frequency measurements of the electrical power distribution system; adjusting the charging rate to remain within a range of charge limits, the range of charge limits being selected based on actual charge rate data for the bi-directional charger for a preceding time period, and the range of charge limits including charging rates that discharge an energy storage device coupled to the bi-directional charger; and sending charger output rate data representing the adjusted charging rate to the bi-directional charger, the charger output rate data indicating a rate at which to charge or discharge the energy storage device. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. One or more non-transitory computer-readable storage media storing computer-readable instructions that when executed by one or more processing units cause a computer to perform a method, the method comprising:
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determining an initial charging rate for a bi-directional charger based on data representing one or more electrical characteristics of an electrical power distribution system, the electrical characteristic data including frequency data representing one or more frequency measurements of the electrical power distribution system; adjusting the charging rate to remain within a range of charge limits, the range of charge limits being selected using the instructions based on actual charge rate data for the bi-directional charger for a preceding time period, and the range of charge limits including charging rates that discharge an energy storage device coupled to the bi-directional charger; and sending charger output rate data representing the adjusted charging rate to the bi-directional charger, the charger output rate data indicating a rate at which to charge or discharge the energy storage device. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. A system, comprising:
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one or more processing units; an interface to a bi-directional charger, the bi-directional charger configured to charge or discharge an energy storage device based on charger output rate data; and one or more non-transitory computer-readable storage media storing computer-readable instructions that when executed by the one or more processing units cause the system to perform a method, the method comprising; determining an initial charging rate for a bi-directional charger based on data representing one or more electrical characteristics of an electrical power distribution system, the electrical characteristic data including frequency data representing one or more frequency measurements of the electrical power distribution system; adjusting the charging rate to remain within a range of charge limits, the range of charge limits being selected using the instructions based on actual charge rate data for the bi-directional charger for a preceding time period, and the range of charge limits including charging rates that discharge an energy storage device coupled to the bi-directional charger; and using the interface, sending charger output rate data representing the adjusted charging rate to the bi-directional charger, the charger output rate data indicating a rate at which to charge or discharge the energy storage device. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42)
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43. A method, comprising:
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determining a charging rate for a bi-directional charger using data representing one or more electrical characteristics of an electrical power distribution system, maintaining the determined charging rate below an upper charge limit and above a lower charge rate limit, each of the respective charge limits being selected based on an average charge rate of the bi-directional charger for a preceding time period; and sending the charger output rate data representing the determined charging rate to the bi-directional charger. - View Dependent Claims (44, 45, 46, 47)
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48. One or more non-transitory computer-readable storage media storing computer-readable instructions that when executed by a computer determine a charging rate for a bi-directional charger, the method comprising:
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determining a charging rate for a bi-directional charger using data representing one or more electrical characteristics of an electrical power distribution system, maintaining the determined charging rate below an upper charge limit and above a lower charge rate limit, each of the respective charge limits being selected using the instructions based on an average charge rate of the bi-directional charger for a preceding time period; and sending the charger output rate data representing the determined charging rate to the bi-directional charger. - View Dependent Claims (49, 50)
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Specification