UTILITY INTERACTIVE INVERTER WITH VAR DISPATCH CAPABILITIES
First Claim
1. A volt ampere reactive (VAR) dispatch device comprising:
- a control system connected to a network, wherein the control system is configured to receive system control commands over the network from an external system;
a monitoring device operatively connected to the control system and to a power grid, wherein the monitoring device is configured to detect local variations in conditions on the power grid and wherein the monitoring device is further configured to communicate the local variations in conditions on the power grid to the control system;
at least one power storage device operatively connected to the control system;
an energy conversion device operatively connected to the control system, the power storage device, and the power grid, wherein the energy conversion device is configured to input power from the at least one power storage device and output the power to the grid varying at least one property of the power;
wherein the control system is further configured to command the at least one power storage device and the energy conversion device to output the power to the power grid varying the at least one property of the power when the control system receives notification of a local variation in conditions on the power grid that indicate a state of the power grid; and
wherein the control system is further configured to command the at least one power storage device and the energy conversion device to output the power to the power grid varying the at least one property of the power when the control system receives a system control command from the external system commanding the control system to output power to the power grid.
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Accused Products
Abstract
A VAR dispatch system. A central control system connected to a network is configured to receive data reflecting local variations in conditions on a power grid and to transmit system control commands over the network. A plurality of VAR dispatch devices are connected to the network and to the power grid. Each VAR dispatch device is configured to detect local variations in conditions on the power grid and to transmit the data reflecting such local variations to the central control system and to receive control commands from the central control system. Each VAR dispatch device is configured to store power and to output stored power to the power grid based on local variations in conditions on the power grid. Each VAR dispatch device is further configured to output stored power to the power grid when the VAR dispatch device receives system control commands from the central control system.
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Citations
28 Claims
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1. A volt ampere reactive (VAR) dispatch device comprising:
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a control system connected to a network, wherein the control system is configured to receive system control commands over the network from an external system; a monitoring device operatively connected to the control system and to a power grid, wherein the monitoring device is configured to detect local variations in conditions on the power grid and wherein the monitoring device is further configured to communicate the local variations in conditions on the power grid to the control system; at least one power storage device operatively connected to the control system; an energy conversion device operatively connected to the control system, the power storage device, and the power grid, wherein the energy conversion device is configured to input power from the at least one power storage device and output the power to the grid varying at least one property of the power; wherein the control system is further configured to command the at least one power storage device and the energy conversion device to output the power to the power grid varying the at least one property of the power when the control system receives notification of a local variation in conditions on the power grid that indicate a state of the power grid; and wherein the control system is further configured to command the at least one power storage device and the energy conversion device to output the power to the power grid varying the at least one property of the power when the control system receives a system control command from the external system commanding the control system to output power to the power grid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 26)
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15. The VAR dispatch system comprising:
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a central control system connected to a network, wherein the control system is configured to receive data reflecting local variations in conditions on a power grid, and wherein the central control system is further configured to transmit system control commands over the network; a plurality of VAR dispatch devices, each VAR dispatch device being connected to the network and to the power grid; wherein each VAR dispatch device is configured to detect local variations in conditions on the power grid and to transmit the data reflecting local variations in conditions on the power grid to the central control system; wherein each VAR dispatch device is further configured to receive control commands from the central control system; wherein each VAR dispatch device is further configured to store power from at least one source; wherein each VAR dispatch device is further configured to output stored power to the power grid when local variations in conditions on the power grid indicate a local state on the power grid; wherein each VAR dispatch device is further configured to output stored power to the power grid when the VAR dispatch device receives system control commands from the central control system commanding the device to output stored power to the power grid. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 27, 28)
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23. A method of managing a power grid comprising the steps:
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receiving, over a network, data reflecting local variations in conditions on a power grid from a plurality of volt ampere reactive (VAR) dispatch devices; determining, using a computer, based on the data reflecting local variations in conditions on the power grid, that at least one condition that exists on the power grid; transmitting, over the network, at least one control command to at least one of the plurality of VAR dispatch devices to output power to the power grid to mitigate the at least one condition exists on the power grid. - View Dependent Claims (24)
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25. A volt ampere reactive (VAR) dispatch device comprising:
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a control system connected to a network, wherein the control system is configured to receive system control commands over the network from an external system; a monitoring device operatively connected to the control system and to a power grid, wherein the monitoring device is configured to detect local variations in conditions on the power grid and wherein the monitoring device is further configured to communicate the local variations in conditions on the power grid to the control system; at least one power storage device operatively connected to the control system; an energy conversion device operatively connected to the control system, the power storage device, and the power grid, wherein the energy conversion device is configured to input power from the at least one power storage device and output the power to the grid varying at least one property of the power; and wherein the control system is further configured to command the power storage device and the energy conversion device to output the power to the power grid varying the at least one property of the power when the control system receives a system control command from the external system commanding the control system to output power to the power grid.
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Specification