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US 12,155,197 B2Granted
Isolation apparatus and method of a fault segment in a transformer loop
AssigneeEaton Intelligent Power Limited
InventorsSamuel T. Reed, Steven Howard Buehler, Eduardo Muñoz Sampedro
Life of this patent
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Abstract
A transformer assembly includes: a first switching apparatus configured to be electrically connected to a first segment of a transformer loop; a second switching apparatus configured to be electrically connected to a second segment of the transformer loop; and a transformer including: a first coil electrically connected to the first switching apparatus and the second switching apparatus; and a second coil electrically connected to an output configured to electrically connect to a load.
Claims20
An assembly comprising:
- a housing;
- a first switching apparatus in the housing, the first switching apparatus configured to be electrically connected to a first segment of a transformer loop;
- a second switching apparatus in the housing, the second switching apparatus configured to be electrically connected to a second segment of the transformer loop;
- a transformer in the housing, the transformer comprising:
- a first coil electrically connected to the first switching apparatus and the second switching apparatus;
- and
- a second coil electrically connected to an output that is configured to electrically connect to a load;
- and
- an electronic control system in the housing, the electronic control system receiving source configuration information, wherein the source configuration information identifies a normally open point in the transformer loop;
- and the normally open point is one of the first switching apparatus, the second switching apparatus, and a controllable switching apparatus in another transformer in the transformer loop.
7 more elements
A method of changing a transformer loop from a first source configuration to a second source configuration, the method comprising:
- identifying a first transformer assembly from among a plurality of transformer assemblies in the transformer loop, each of the plurality of transformer assemblies comprising two switching apparatuses such that the transformer loop comprises a plurality of switching apparatuses, the first transformer assembly comprising a first switching apparatus that is normally open in the first source configuration, wherein the first source configuration is defined by the first switching apparatus being normally open and all of the other of the plurality of switching apparatuses being closed;
- identifying a second transformer assembly from among the plurality of transformer assemblies in the transformer loop, the second transformer assembly comprising a second switching apparatus that is normally open in the second source configuration, wherein the second source configuration is defined by the second switching apparatus being normally open and all of the other of the plurality of switching apparatuses being closed;
- commanding an electronic control system in the second transformer assembly to open the second switching apparatus that is normally open in the second source configuration;
- and
- after the second switching apparatus that is normally open in the second source configuration is open, commanding an electronic control system in the first transformer assembly to close the first switching apparatus that is normally open in the first source configuration such that the source configuration is changed from the first source configuration to the second source configuration.
2 more elements
A method of isolating a faulted transformer loop segment, the method comprising:
- receiving an indication of a current flowing to a first switching apparatus and a second switching apparatus of a first transformer assembly, wherein the first switching apparatus is electrically connected to a first segment of the transformer loop and the second switching apparatus is electrically connected to a second segment of the transformer loop;
- comparing the indication to a fault current threshold to determine whether the current flowing to the first switching apparatus or the second switching apparatus exceeds the fault current threshold;
- if the current flowing to the first switching apparatus exceeds the fault current threshold, commanding a motion control device associated with the first switching apparatus such that the first switching apparatus opens;
- and
- isolating the first segment of the transformer loop by commanding an electronic control system in a second transformer assembly to open a third switching apparatus, wherein the third switching apparatus is electrically connected to the first segment of the transformer loop and is in the second transformer assembly.
2 more elements
Dependencies are inferred from the claim text.