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US 2026/0211013 A1Published application
Current detection arrangement for electric grids
OwnerGioele Gregis, Andres Enrique Villamil Prietoinventors
Life of this patent
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Abstract
A detection arrangement for DC grids is provided. The arrangement includes a first detection module configured to measure a line current flowing along an electric line and to generate a first detection signal indicative of said current. The arrangement also includes a second detection module that is configured to detect the same line current and to generate a second detection signal indicative of the time-dependent rate of change of the current magnitude. The arrangement further comprises multiple signal processing modules designed to process the first and second detection signals and to generate an output signal indicative of the behavior of the line current.
Claims20
A current detection arrangement for electric grids, the current detection arrangement comprising:
- a first detection module operatively coupled to an electric line and configured to provide a first detection signal indicative of a line current flowing along the electric line;
- a second detection module operatively coupled to the electric line and configured to provide a second detection signal indicative of a variation rate over time of the line current;
- a first signal processing module operatively coupled to the second detection module the first signal processing module configured to receive and process the second detection signal, wherein the first signal processing module is configured to determine an operating condition of the electric line based on the second detection signal, and wherein the first signal processing module is configured to provide control signals for other signal processing modules, the control signals being generated depending on the determined operating condition of the electric line;
- a second signal processing module operatively coupled to the first detection module the second signal processing module configured to receive and process the first detection signal, wherein the second signal processing module is configured to provide a third detection signal tracking the first detection signal, if a normal operating condition of the electric line is determined by the first signal processing module, and wherein the second signal processing module is configured to provide the third detection signal having a constant value, if an abnormal operating condition of the electric line is determined by the first signal processing module, the constant value being indicative of a magnitude value of the line current measured at a trigger instant, at which the first signal processing module has determined that the electric line operates in an abnormal condition;
- a third signal processing module operatively coupled to the second detection module the third signal processing module configured to receive and process the second detection signal, wherein the third signal processing module is configured to provide a fourth detection signal indicative of the line current, if an abnormal operating condition of the electric line is determined by the first signal processing module, wherein the first signal processing module is configured to provide the fourth detection signal at time instants following the trigger instant, and wherein the third signal processing module is configured to obtain the fourth detection signal by integrating over time the second detection signal;
- and
- a fourth signal processing module operatively coupled to the second and third signal processing modules, the fourth signal processing module configured to receive and process the third and fourth detection signals, wherein the fourth signal processing module is configured to provide a fifth detection signal indicative of the line current, and wherein the fourth signal processing module is configured to obtain the fifth detection signal by carrying out a weighted sum of the third and fourth detection signals.
4 more elements
An electronic device for electric grids including or operatively coupled to a detection arrangement, the detection arrangement comprising:
- a first detection module operatively coupled to an electric line and configured to provide a first detection signal indicative of a line current flowing along the electric line;
- a second detection module operatively coupled to the electric line and configured to provide a second detection signal indicative of a variation rate over time of the line current;
- a first signal processing module operatively coupled to the second detection module the first signal processing module configured to receive and process the second detection signal, wherein the first signal processing module is configured to determine an operating condition of the electric line based on the second detection signal, and wherein the first signal processing module is configured to provide control signals for other signal processing modules, the control signals generated depending on the determined operating condition of the electric line;
- a second signal processing module operatively coupled to the first detection module the second signal processing module configured to receive and process the first detection signal, wherein the second signal processing module is configured to provide a third detection signal tracking the first detection signal, if a normal operating condition of the electric line is determined by the first signal processing module, and wherein the second signal processing module is configured to provide the third detection signal having a constant value, if an abnormal operating condition of the electric line is determined by the first signal processing module, the constant value indicative of a magnitude value of the line current measured at a trigger instant, at which the first signal processing module has determined that the electric line operates in an abnormal condition;
- a third signal processing module operatively coupled to the second detection module the third signal processing module configured to receive and process the second detection signal, wherein the third signal processing module is configured to provide a fourth detection signal indicative of the line current, if an abnormal operating condition of the electric line is determined by the first signal processing module, wherein the first signal processing module is configured to provide the fourth detection signal at time instants following the trigger instant, and wherein the third signal processing module is configured to obtain the fourth detection signal by integrating over time the second detection signal;
- and
- a fourth signal processing module operatively coupled to the second and third signal processing modules, the fourth signal processing module configured to receive and process the third and fourth detection signals, wherein the fourth signal processing module is configured to provide a fifth detection signal indicative of the line current, and wherein the fourth signal processing module is configured to obtain the fifth detection signal by carrying out a weighted sum of the third and fourth detection signals.
4 more elements
A protection device for electric grids including or operatively coupled to an electronic device, the electronic device including or operatively coupled to a detection arrangement, the detection arrangement comprising:
- a first detection module operatively coupled to an electric line and configured to provide a first detection signal indicative of a line current flowing along the electric line;
- a second detection module operatively coupled to the electric line and configured to provide a second detection signal indicative of a variation rate over time of the line current;
- a first signal processing module operatively coupled to the second detection module the first signal processing module configured to receive and process the second detection signal, wherein the first signal processing module is configured to determine an operating condition of the electric line based on the second detection signal, and wherein the first signal processing module is configured to provide control signals for other signal processing modules, the control signals generated depending on the determined operating condition of the electric line;
- a second signal processing module operatively coupled to the first detection module the second signal processing module configured to receive and process the first detection signal, wherein the second signal processing module is configured to provide a third detection signal tracking the first detection signal, if a normal operating condition of the electric line is determined by the first signal processing module, and wherein the second signal processing module is configured to provide the third detection signal having a constant value, if an abnormal operating condition of the electric line is determined by the first signal processing module, the constant value indicative of a magnitude value of the line current measured at a trigger instant, at which the first signal processing module has determined that the electric line operates in an abnormal condition;
- a third signal processing module operatively coupled to the second detection module the third signal processing module configured to receive and process the second detection signal, wherein the third signal processing module is configured to provide a fourth detection signal indicative of the line current, if an abnormal operating condition of the electric line is determined by the first signal processing module, wherein the first signal processing module is configured to provide the fourth detection signal at time instants following the trigger instant, and wherein the third signal processing module is configured to obtain the fourth detection signal by integrating over time the second detection signal;
- and
- a fourth signal processing module operatively coupled to the second and third signal processing modules, the fourth signal processing module configured to receive and process the third and fourth detection signals, wherein the fourth signal processing module is configured to provide a fifth detection signal indicative of the line current, and wherein the fourth signal processing module is configured to obtain the fifth detection signal by carrying out a weighted sum of the third and fourth detection signals, according to one of the claims from 10 to 14.
4 more elements
Dependencies are inferred from the claim text.