Method and apparatus for detecting partial discharges in electrical systems
First Claim
1. A method of detecting partial discharge associated with at least a portion of an electrical system, wherein the electrical system includes at least one electrical machine electrically coupled within the electrical system, said method comprising:
- generating an electromagnetic field within an electrical machine;
collecting partial discharge data from at least a portion of an electrical system;
determining a first partial discharge inception voltage (PDIV) value of at least a portion of partial discharge activity within the electrical system;
determining a ratio of the first PDIV value to a predetermined line-neutral voltage of the at least one electrical machine;
generating at least one trending comparison of the first PDIV value and at least one second PDIV value of at least a portion of partial discharge activity within the electrical system; and
outputting the ratio and trending comparison to indicate the condition of the partial discharge activity within the electrical system.
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Accused Products
Abstract
A method of detecting partial discharge associated with at least a portion of an electrical system, wherein the electrical system includes at least one electrical machine electrically coupled within the electrical system, includes generating an electromagnetic field within the electrical machine. The method also includes collecting partial discharge data from at least a portion of the electrical system. The method further includes determining a first partial discharge inception voltage (PDIV) value of at least a portion of partial discharge activity within the electrical system. The method also includes generating at least one trending comparison of the first PDIV value and at least one second PDIV value of at least a portion of partial discharge activity within the electrical system. The method further includes outputting the results.
34 Citations
20 Claims
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1. A method of detecting partial discharge associated with at least a portion of an electrical system, wherein the electrical system includes at least one electrical machine electrically coupled within the electrical system, said method comprising:
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generating an electromagnetic field within an electrical machine; collecting partial discharge data from at least a portion of an electrical system; determining a first partial discharge inception voltage (PDIV) value of at least a portion of partial discharge activity within the electrical system; determining a ratio of the first PDIV value to a predetermined line-neutral voltage of the at least one electrical machine; generating at least one trending comparison of the first PDIV value and at least one second PDIV value of at least a portion of partial discharge activity within the electrical system; and outputting the ratio and trending comparison to indicate the condition of the partial discharge activity within the electrical system. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A partial discharge detection system comprising:
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at least one output device; and at least one processor coupled in electronic data communication with said at least one output device, wherein said at least one processor is programmed with a first algorithm configured to automatically determine a first partial discharge inception voltage (PDIV) value of at least a portion of partial discharge activity within an electrical system automatically upon at least one of; a measured voltage of at least one electrical machine exceeding a predetermined voltage threshold value, wherein the electrical system includes the electrical machine electrically coupled within the electrical system; and the measured voltage of the at least one electrical machine increasing as a function of time, wherein said at least one processor is programmed to determine a ratio of the first PDIV value to a predetermined line-neutral voltage of the at least one electrical machine. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. An electrical system comprising:
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at least one electrical device electrically coupled within said electrical system; at least one measurement device coupled to said at least one electrical device; and a partial discharge detection system coupled to at least a portion of said electrical system comprising; at least one output device; and at least one processor coupled in electronic data communication with said at least one output device and said at least one measurement device, wherein said at least one processor is programmed with a first algorithm configured to automatically determine a first partial discharge inception voltage (PDIV) value of at least a portion of partial discharge activity within said electrical system automatically upon at least one of; a measured voltage of said at least one electrical device exceeding a predetermined voltage threshold value; and the measured voltage of said at least one electrical device increasing as a function of time, wherein said at least one processor is programmed to determine a ratio of the first PDIV value to a predetermined line-neutral voltage of said at least one electrical device. - View Dependent Claims (17, 18, 19, 20)
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Specification