MICROGRID
First Claim
Patent Images
1. An electric grid comprising:
- a plurality of grid sections;
at least one of the grid sections being a microgrid;
the microgrid configured to receive electric power at first and second microgrid interconnections;
a first substation interconnecting the microgrid first interconnection with a first source of electric power energizing a first grid section;
a second substation interconnecting the microgrid second interconnection with a second source of electric power energizing a second grid section; and
,the microgrid having isolation devices for selectively electrically isolating the microgrid from other sections of the grid.
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Accused Products
Abstract
A microgrid is a portion of an electric grid configured for separate management and control as compared with the rest of the grid and having attributes that can be tailored to meet specified needs including the needs of electric power consumers served by the microgrid.
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Citations
42 Claims
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1. An electric grid comprising:
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a plurality of grid sections; at least one of the grid sections being a microgrid; the microgrid configured to receive electric power at first and second microgrid interconnections; a first substation interconnecting the microgrid first interconnection with a first source of electric power energizing a first grid section; a second substation interconnecting the microgrid second interconnection with a second source of electric power energizing a second grid section; and
,the microgrid having isolation devices for selectively electrically isolating the microgrid from other sections of the grid. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An electric grid comprising:
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a plurality of grid sections; at least one of the grid sections being a microgrid; a substation of the microgrid selectively interconnecting a substation bus to an electric source; for each of a plurality of distribution circuits, a first switch for interconnecting one end of the circuit to the bus and a second switch for interconnecting another end of the circuit to the bus; for each of the plurality of distribution circuits, one of the first and second switches being closed and the other of the first and second switches being open; one or more sectionalization switches operative to bifurcate at least one of the plurality of distribution circuits; and
,upon the occurrence of a fault in a sectionalized distribution circuit, one or more of the sectionalization switches operative to interrupt the flow of electric power to the fault.
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9. An electric grid comprising:
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a plurality of grid sections; at least one of the grid sections being a microgrid; a first substation and a grid power source, the microgrid configured to receive electric power at the first substation from the grid power source; a second substation and a local power source, the microgrid configured to receive electric power at the second substation from the first local power source; and
,the microgrid having isolation devices for selectively electrically isolating the microgrid from other sections of the grid. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An electric grid comprising:
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a plurality of grid sections; at least one of the grid sections being a microgrid; the microgrid configured to receive electric power from at least one of first and second grid power sources; a grid-side converter being an AC to AC converter with a DC bridge interconnecting an AC to DC converter and a DC to AC converter; a first substation interconnecting the AC to AC converter and a first microgrid interconnection; a plurality of distribution lines extending between the first substation and a second substation; a plurality of load-side converters, each converter located in a respective distribution line between a second substation and loads connected to the distribution line; and
,the microgrid having isolation devices for electrically isolating the microgrid from one or more sections of the grid. - View Dependent Claims (21)
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22. An electric grid comprising:
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a plurality of grid sections; at least one of the grid sections being a microgrid; the microgrid configured to receive electric power from at least one of first and second grid power sources; first and second grid-side converter for converting grid supplied AC to DC; a first substation interconnecting the first converter to a first microgrid interconnection; a second substation interconnecting the second converter to a second microgrid interconnection; and
,the microgrid having isolation devices for electrically isolating the microgrid from one or more sections of the grid. - View Dependent Claims (23)
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24. An electric grid comprising:
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a plurality of grid sections; at least one of the grid sections being a microgrid; the microgrid supplying a plurality of loads; a first substation and a first power source, the microgrid configured to receive electric power between the first substation and the first power source; a second substation and a second power source, the microgrid configured to receive electric power at the second substation from the second power source; the microgrid having isolation devices for electrically isolating the microgrid from one or more sections of the grid; a master controller; the master controller operative to communicate with at least one of an independent system operator, an electric utility company, and an electric power services aggregator; and
,the master controller operative to manage the microgrid based on information available to the master controller and user settings. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31)
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32. An electric grid comprising:
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a microgrid powered from two sources; the sources including a local generation source; the microgrid capable of operating independently of one of the sources; and
,the microgrid including a self-healing function using sectionalizing switches and breakers to isolate a faulted distribution section and to redirect power to non-faulted sections after a fault occurs. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40, 41)
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42. An electric grid comprising:
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a plurality of grid sections; at least one of the grid sections being a microgrid; the microgrid configured to import electric power at first and second microgrid interconnections; a first substation interconnecting the microgrid first interconnection with a first source of electric power; a second substation interconnecting the microgrid second interconnection with a second source of electric power; a combined heat and power system providing a third source of electric power local to the microgrid and for supplying the microgrid; the combined heat and power system providing thermal energy to a building space associated with a microgrid load; a master controller operative to isolate the microgrid from other grids in anticipation of a weather event determined by the master controller to have the capacity to cause a microgrid outage; and
,the microgrid having isolation devices for electrically isolating the microgrid from one or more sections of the grid.
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Specification