Simultaneous economic dispatch and frequency regulation of power systems
First Claim
1. A method, comprising:
- obtaining, by a computing device, a frequency difference associated with a generator of a power system, where the frequency difference is based upon a current operational value of the generator and a reference value;
determining, by the computing device, an output power adjustment based at least in part upon the frequency difference and a cost function (Ci) associated with the generator, where the cost function is based upon a power dispatch level (Pi) of the generator and the output power adjustment is determined using method of multipliers based at least in part upon the cost function associated with the generator, where a method of multipliers objective function L(·
) for a two-area system is given by;
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Abstract
Various examples are provided for feedback control of power systems. The feedback control can provide simultaneous frequency regulation and economic operation of a power system. In one example, a method includes obtaining a frequency difference associated with a generator of a power system; determining an output power adjustment based at least in part upon the frequency difference and a cost function associated with the generator; and providing a power command to a secondary frequency control of the generator, the power command based upon the output power adjustment. In another example, a generator control system includes a primary frequency controller configured to control frequency droop of a generator of a power system; and a secondary frequency controller configured to adjust output power of the generator based at least in part upon a frequency difference associated with the generator and a cost function associated with the generator.
15 Citations
16 Claims
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1. A method, comprising:
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obtaining, by a computing device, a frequency difference associated with a generator of a power system, where the frequency difference is based upon a current operational value of the generator and a reference value; determining, by the computing device, an output power adjustment based at least in part upon the frequency difference and a cost function (Ci) associated with the generator, where the cost function is based upon a power dispatch level (Pi) of the generator and the output power adjustment is determined using method of multipliers based at least in part upon the cost function associated with the generator, where a method of multipliers objective function L(·
) for a two-area system is given by; - View Dependent Claims (2, 3, 4, 5, 6)
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7. A generator control system, comprising:
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a primary frequency controller configured to control frequency droop of a generator of a power system; and a secondary frequency controller configured to adjust output power of the generator based at least in part upon a frequency difference associated with the generator and a cost function (Ci) associated with the generator, where the cost function is based upon a power dispatch level (Pi) of the generator and the output power adjustment is determined using method of multipliers based at least in part upon the cost function associated with the generator wherein a method of multipliers objective function L(·
) for a two-area system is given by; - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification