Power line parameter adjustment and fault location using traveling waves
First Claim
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1. A system for monitoring an electric power delivery system by detecting a fault using traveling waves, comprising:
- a sensor component in electrical communication with the electric power delivery system configured to obtain electrical signals from the electric power delivery system and to generate electrical measurements from the electrical signals, the electrical measurements each associated with a time stamp;
a non-transitory computer-readable storage medium comprising parameters of the electrical power delivery system including known discontinuities of the electric power delivery system and a line length of the electric power delivery system;
a traveling wave detection module configured to detect a traveling wave and a reflection of the traveling wave using the electrical measurements; and
a known discontinuities module configured to;
associate the reflection of the traveling wave with a known discontinuity; and
,adjust the line length of the electrical power delivery system using the measurements associated with the reflection of the traveling wave based on the known discontinuity;
wherein the traveling wave detection module is further configured to calculate a location of the fault on the electric power delivery system using the measurements associated with the traveling wave and the adjusted line length.
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Abstract
Fault location using traveling waves in an electric power delivery system according to the embodiments herein uses line parameters that are adjusted using traveling wave reflections from known discontinuities in the electric power delivery system. The arrival times of a traveling wave and a reflection of the traveling wave from a known discontinuity may be used to adjust parameters of the electric power delivery system such as, for example, line length. The adjusted parameter can then be used to more accurately calculate the location of the fault using the traveling waves.
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Citations
21 Claims
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1. A system for monitoring an electric power delivery system by detecting a fault using traveling waves, comprising:
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a sensor component in electrical communication with the electric power delivery system configured to obtain electrical signals from the electric power delivery system and to generate electrical measurements from the electrical signals, the electrical measurements each associated with a time stamp; a non-transitory computer-readable storage medium comprising parameters of the electrical power delivery system including known discontinuities of the electric power delivery system and a line length of the electric power delivery system; a traveling wave detection module configured to detect a traveling wave and a reflection of the traveling wave using the electrical measurements; and a known discontinuities module configured to; associate the reflection of the traveling wave with a known discontinuity; and
,adjust the line length of the electrical power delivery system using the measurements associated with the reflection of the traveling wave based on the known discontinuity; wherein the traveling wave detection module is further configured to calculate a location of the fault on the electric power delivery system using the measurements associated with the traveling wave and the adjusted line length.
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2. A method for detecting faults on an electrical transmission line in an electric power delivery system, comprising:
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detecting at a first terminal of the electric power delivery system, a traveling wave associated with a fault; detecting at the first terminal of the electric power delivery system, a reflection of the traveling wave from a known discontinuity in the electrical transmission line; a first intelligent electronic device (IED) receiving measurements associated with the traveling wave detected at the first terminal and the reflection of the traveling wave from the known discontinuity detected at the first terminal, the measurements including time stamps; adjusting a parameter associated with the electrical transmission line using the measurements associated with the reflection of the traveling wave based on the known discontinuity; and
,calculating a location of the fault on the electrical transmission line using the measurements associated with the traveling wave and the adjusted parameter. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A system for monitoring an electric power delivery system by detecting a fault using traveling waves, comprising:
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a sensor component in electrical communication with the electric power delivery system configured to obtain electrical signals from the electric power delivery system and to generate electrical measurements from the electrical signals, the electrical measurements each associated with a time stamp; a non-transitory computer-readable storage medium comprising parameters of the electrical power delivery system including known discontinuities of the electric power delivery system; a traveling wave detection module configured to detect a traveling wave and a reflection of the traveling wave using the electrical measurements; and a known discontinuities module configured to; associate the reflection of the traveling wave with a known discontinuity; and
,adjust a parameter of the electrical power delivery system using the measurements associated with the reflection of the traveling wave based on the known discontinuity; wherein the traveling wave detection module is further configured to calculate a location of the fault on the electric power delivery system using the measurements associated with the traveling wave and the adjusted parameter. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
wherein the traveling wave detection module is configured to calculate the location of the fault using the adjusted time stamps.
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20. The system of claim 18, wherein the dispersion compensation module is further configured to update the parameters of the electrical power delivery system with the adjusted dispersion rate.
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21. The system of claim 14, wherein the traveling wave detection module is further configured to calculate the location of the fault in a timely manner for use in protection of the electric power delivery system.
Specification