Power distribution with wraparound bus
First Claim
1. A generator set providing power to at least two units, the generator set comprising:
- a reserve generator;
a reserve bus connecting respective units to the reserve generator;
a wraparound bus connecting the respective units to the reserve bus;
for respective units;
a utility line;
a unit generator;
a generator switch that;
routes power to a unit load from the utility line, andresponsive to detecting unit load exceeding power from the utility line, routes power to the unit load from the unit generator;
a reserve switch that, responsive to detecting unit load exceeding power routed by the generator switch, routes power to the unit load from the reserve bus; and
a wraparound controller that, when the unit has capacity exceeding the unit load, selectively connects the unit to the wraparound bus to supplement the power provided by the reserve generator to a second unit load.
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Accused Products
Abstract
A power distribution system among a set of units (e.g., server blocks) may comprise, for each unit, a utility line and a unit generator, and a reserve generator providing failover transient performance and redundancy improvement to the power for the unit generators. The reserve generator may connect to the units via a reserve bus, and the unit generators may selectively connect to a wraparound bus connected to the reserve bus. When the failover load exceeds the available failover transient capability of one generator, one or more unit generators may (automatically or by operator selection) be connected with the wraparound bus to apply available transient capability to satisfy the excess failover load with minimal increase in power distribution resources and complexity.
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Citations
20 Claims
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1. A generator set providing power to at least two units, the generator set comprising:
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a reserve generator; a reserve bus connecting respective units to the reserve generator; a wraparound bus connecting the respective units to the reserve bus; for respective units; a utility line; a unit generator; a generator switch that; routes power to a unit load from the utility line, and responsive to detecting unit load exceeding power from the utility line, routes power to the unit load from the unit generator; a reserve switch that, responsive to detecting unit load exceeding power routed by the generator switch, routes power to the unit load from the reserve bus; and a wraparound controller that, when the unit has capacity exceeding the unit load, selectively connects the unit to the wraparound bus to supplement the power provided by the reserve generator to a second unit load. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of controlling a generator set providing power to at least two units, the generator set comprising:
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a reserve generator; a reserve bus connecting respective units to the reserve generator; for respective units; a utility line; a unit generator; and a reserve switch that, responsive to detecting a unit load exceeding power from the utility line and the unit generator, routes power from the reserve bus; and a wraparound bus connecting respective unit generators to the reserve bus; and the method comprising; monitoring a reserve load on the reserve bus and power from the reserve generator; and responsive to detecting reserve load on the reserve bus exceeding power from the reserve generator; identifying a selected unit having spare capacity that exceeds power routed to a unit load of the selected unit; and selectively connecting the selected unit to the wraparound bus to supplement the power provided by the reserve generator for the reserve load. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A system for controlling a generator set providing power to at least two units, the generator set comprising:
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a reserve generator; a reserve bus connecting respective units to the reserve generator; for respective units; a utility line; a unit generator; and a reserve switch that, responsive to detecting unit load exceeding power from the utility line and the unit generator, routes power from the reserve bus; and a wraparound bus connecting respective unit generators to the reserve bus, the system comprising; a reserve load monitor that monitors a reserve load on the reserve bus and power from the reserve generator; and a wraparound bus connector that, responsive to detecting reserve load on the reserve bus exceeding power from the reserve generator; identifies a selected unit having spare power capacity that exceeds a unit load of the selected unit; and selectively connects the selected unit to the wraparound bus to supplement the power provided by the reserve generator for the reserve load.
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Specification