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US 9,467,080 B2Granted
Protective functions for parallel generators
AssigneeKohler Co.
InventorsIsaac S. Frampton, Douglas W. Dorn
Life of this patent
Estimating the term…
Abstract
A generator system may include two or more generators electrically connected through a generator bus. A controller receives operation data from a first generator. The operation data may describe a power flow from a second generator to the first generator. From the operation data, either a loss of speed control or a loss of voltage control may be identified at the second generator. The controller may generate a command for the second generator based on the loss of speed control or the loss of voltage control.
Claims20
A method comprising:
- identifying a system of parallel generators including a first generator and a second generator;
- receiving operation data for the first generator;
- determining a loss of speed control or a loss of voltage control at the second generator based on the operation data for the first generator;
- and
- generating a command for the second generator based on the loss of speed control or the loss of voltage control,
- wherein determining the loss of speed control or the loss of voltage control at the second generator based on the operation data for the first generator comprises:
- identifying reverse reactive power from the operation data for the first generator;
- and
- comparing the reverse reactive power to a threshold level, wherein the loss of speed control or the loss of voltage control is based on the reverse reactive power exceeding the threshold level.
6 more elements
A method comprising:
- identifying a system of parallel generators including a first generator and a second generator;
- receiving operation data for the first generator;
- determining a loss of speed control or a loss of voltage control at the second generator based on the operation data for the first generator;
- and
- generating a command for the second generator based on the loss of speed control or the loss of voltage control,
- wherein determining the loss of speed control or the loss of voltage control at the second generator based on the operation data for the first generator comprises:
- identifying reverse real power from the operation data for the first generator;
- and
- comparing the reverse real power to a threshold level, wherein the loss of speed control or the loss of voltage control is based on the reverse real power exceeding the threshold level.
6 more elements
An apparatus comprising:
- a processor;
- and
- a memory storing instructions configured to cause the processor to perform:
- identifying a system of parallel generators including a first generator and a second generator;
- receiving operation data for the first generator;
- determining a loss of speed control or a loss of voltage control at the second generator based on the operation data for the first generator;
- and
- generating a command for the second generator based on the loss of speed control or the loss of voltage control,
- wherein determining the loss of speed control or the loss of voltage control at the second generator based on the operation data for the first generator comprises:
- identifying reverse real power from the operation data for the first generator;
- and
- comparing the reverse real power to a threshold level, wherein the loss of speed control or the loss of voltage control is based on the reverse real power exceeding the threshold level.
9 more elements
An apparatus comprising:
- a processor;
- and
- a memory storing instructions configured to cause the processor to perform:
- identifying a system of parallel generators including a first generator and a second generator;
- receiving operation data for the first generator;
- determining a loss of speed control or a loss of voltage control at the second generator based on the operation data for the first generator;
- and
- generating a command for the second generator based on the loss of speed control or the loss of voltage control,
- wherein determining the loss of speed control or the loss of voltage control at the second generator based on the operation data for the first generator comprises:
- identifying reverse reactive power from the operation data for the first generator;
- and
- comparing the reverse reactive power to a threshold level, wherein the loss of speed control or the loss of voltage control is based on the reverse reactive power exceeding the threshold level.
9 more elements
Dependencies are inferred from the claim text.