Power system for identifying power faults
AssigneeCummins Power Generation Inc.
InventorsShubhranshu Verma, John Dorough, Der Ueng Lee, Saklain Karim, Mark H. Schultz
Life of this patent
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Abstract
Systems and methods, and computing platforms for determining a fault in a power system, executing on a controller are disclosed. Exemplary implementations can receive, from the plurality of system control modules, a plurality of power flow directions as measured by the plurality of line current sensors, receive, from the plurality of system control modules, a plurality of voltage measurements based on measurements of a plurality of potential transformers, determine a location of a power fault using the plurality of power flow directions, and determine a phase of the power fault using the plurality of voltage measurements.
Claims20
A power system for identifying power faults, the power system comprising:
- a plurality of line current sensors each disposed between a load bus and a power source;
- a plurality of system control modules, each operatively coupled to one or more of the plurality of line current sensors;
- and
- one or more controllers configured to:
- receive, from the plurality of system control modules, a plurality of power flow directions as measured by the plurality of line current sensors;
- receive, from the plurality of system control modules, a plurality of voltage measurements based on measurements of a plurality of potential transformers;
- determine a location of a power fault using the plurality of power flow directions;
- and
- determine a phase of the power fault using the plurality of voltage measurements.
A method of determining a fault in a power system, executing on a controller, the method comprising:
- receiving a first value of current flow from a first line current sensor, the first line current sensor electrically coupled between a generator bus and a load bus;
- receiving a second value of current flow from a second line current sensor, the second line current sensor electrically coupled between the generator bus and the load bus;
- receiving a first value of voltage from a first potential transformer;
- receiving a second value of voltage from a second potential transformer;
- determining a first direction of power flow in the first line current sensor using the first value of current flow;
- determining a second direction of power flow in the second line current sensor using the second value of current flow;
- determining a power fault is located on one of the generator bus of the power system or the load bus of the power system based on the first direction of power flow and the second direction of power flow;
- and
- determining a phase of the power fault is located on one of the generator bus of the power system or the load bus of the power system based on the first value of voltage and the second value of voltage.
A control system for a power system for identifying phases of power faults comprising one or more controllers comprising a processing circuit configured to:
- receive, from system control modules, respective power flow directions as measured by a first line current sensor and a second current line sensor;
- receive, from the system control modules, respective voltage measurements as measured by a first potential transformer and a second potential transformer;
- and
- determine a potential phase of the power fault based on the respective voltage measurements at the first line current sensor and the second current line sensor.
Dependencies are inferred from the claim text.