Power flow controller responsive to power circulation demand for optimizing power transfer
First Claim
1. A power flow controller, comprising:
- a controller responsive to a circulating power demand; and
a first voltage-sourced converter coupled to the controller and adapted to be coupled to a transmission line, the first voltage-sourced converter configured by the controller to control power flow in the transmission line.
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Accused Products
Abstract
A power flow controller responsive to power circulation demand for optimizing power transfer is disclosed. When a power flow controller operates at its rated capacity, it can no longer regulate from-bus voltage set-points, line power flow set-points, or both. In such cases, the power flow controller switches to power circulation set-point control without exceeding the rated capacities of the voltage-sourced converters in the power flow controller. Power-voltage (PV) curves associated with voltage stability analysis for maximizing power transfer can be generated and stored for use with a power flow controller operating in automatic power flow control mode.
27 Citations
23 Claims
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1. A power flow controller, comprising:
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a controller responsive to a circulating power demand; and
a first voltage-sourced converter coupled to the controller and adapted to be coupled to a transmission line, the first voltage-sourced converter configured by the controller to control power flow in the transmission line. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of controlling power flow in a transmission line using a power flow controller operated at rated capacity, comprising:
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determining if a power flow controller coupled to the transmission line is operating at rated capacity;
determining a circulating power demand in response to the power flow controller operating at rated capacity; and
configuring the power flow controller based on the circulating power demand to control power flow in the transmission line. - View Dependent Claims (17, 18, 19)
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20. A computer-readable medium having stored thereon instructions which, when executed by a processor in a power flow control system coupled to a transmission line, causes the processor to perform the operations of:
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determining a desired voltage-stability margin for a bus on the transmission line;
determining a power flow adjustment that will maintain the desired voltage-stability margin on the bus; and
determining a circulating power demand that will provide the maximum power flow adjustment while maintaining the desired voltage-stability margin on the bus. - View Dependent Claims (21, 22)
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23. A system for controlling power flow in a transmission line using a power flow controller operated at rated capacity, comprising:
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means for determining if a power flow controller coupled to the transmission line is operating at rated capacity;
means for determining a circulating power demand in response to the power flow controller operating at rated capacity; and
means for configuring the power flow controller based on the circulating power demand to control power flow in the transmission line.
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Specification