Power quality diagnosis for power conditioning
First Claim
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1. An apparatus comprising:
- a power monitor comprising;
a power conditioning circuit to provide conditioned electrical power to a load;
a switch to provision the conditioned electrical power to the load via an output port;
a plurality of sensors distributed in the power conditioning circuit to measure respective power quality characteristics therein;
a communication buffer accessible by a terminal device via a communication link, wherein the communication buffer stores diagnostic data for conveyance to the terminal device over the communication link;
a power monitor memory to store samples of the power quality characteristic measurements from the plurality of sensors;
a processor, operable in a direct mode or an event mode, electrically coupled to the plurality of sensors to receive the power quality characteristic measurements therefrom, the signal processor being responsive to a trigger condition established by a user to store data blocks of the power quality characteristic measurements,wherein when the trigger condition established by the user is met in response to occurrence of a power quality event and the processor is in the direct mode, acquisition of diagnostic data is triggered and the diagnostic data is stored in the communication buffer,wherein when the trigger condition established by the user is met in response to occurrence of a power quality event and the processor is in the event mode, acquisition of diagnostic data is triggered and the diagnostic data is stored in the power monitor memory, and detection of the trigger condition is reported;
wherein the power quality event is defined by the power quality characteristic measurements meeting a power anomaly criterion;
wherein the processor generates a signal to control the switch into a non-conducting state to interrupt provision of the conditioned electrical power to the load when detecting the power quality event; and
a terminal device comprising;
a processor, operable in an archive mode, to obtain the data blocks from the communication buffer of the power monitor over the communication link therewith; and
a user interface by which the user defines the trigger condition and on which the obtained data blocks are displayed, the data blocks comprising at least one temporally-dependent waveform comprising the power anomaly, wherein the power anomaly comprises a harmonic distortion.
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Abstract
A power monitor includes a power conditioning circuit that provides conditioned power to a load. The power conditioning circuit includes at least one sensor to measure a power quality characteristic, e.g., input voltage, load current, temperature, etc. A terminal device implements a diagnostic tool for the power monitor and includes a processor to obtain data indicative of the power quality characteristic over a communication link with the power monitor. The data may be retrieved in response to a trigger condition. A user interface implemented on the terminal device displays the obtained power quality characteristic as at least one temporally varying waveform.
11 Citations
18 Claims
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1. An apparatus comprising:
a power monitor comprising; a power conditioning circuit to provide conditioned electrical power to a load; a switch to provision the conditioned electrical power to the load via an output port; a plurality of sensors distributed in the power conditioning circuit to measure respective power quality characteristics therein; a communication buffer accessible by a terminal device via a communication link, wherein the communication buffer stores diagnostic data for conveyance to the terminal device over the communication link; a power monitor memory to store samples of the power quality characteristic measurements from the plurality of sensors; a processor, operable in a direct mode or an event mode, electrically coupled to the plurality of sensors to receive the power quality characteristic measurements therefrom, the signal processor being responsive to a trigger condition established by a user to store data blocks of the power quality characteristic measurements, wherein when the trigger condition established by the user is met in response to occurrence of a power quality event and the processor is in the direct mode, acquisition of diagnostic data is triggered and the diagnostic data is stored in the communication buffer, wherein when the trigger condition established by the user is met in response to occurrence of a power quality event and the processor is in the event mode, acquisition of diagnostic data is triggered and the diagnostic data is stored in the power monitor memory, and detection of the trigger condition is reported; wherein the power quality event is defined by the power quality characteristic measurements meeting a power anomaly criterion; wherein the processor generates a signal to control the switch into a non-conducting state to interrupt provision of the conditioned electrical power to the load when detecting the power quality event; and a terminal device comprising; a processor, operable in an archive mode, to obtain the data blocks from the communication buffer of the power monitor over the communication link therewith; and a user interface by which the user defines the trigger condition and on which the obtained data blocks are displayed, the data blocks comprising at least one temporally-dependent waveform comprising the power anomaly, wherein the power anomaly comprises a harmonic distortion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method comprising:
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establishing a communication link between a power monitor and a terminal device; defining, through a user interface of the terminal device, a trigger condition on power quality characteristic measurements made by a plurality of sensors distributed in a power conditioning circuit of the power monitor, wherein when the trigger condition established by the user is met in response to occurrence of a power quality event, as determined by a sensor that measures a power quality characteristic, and the processor is in a direct mode, acquisition of diagnostic data is triggered and the diagnostic data is stored in a communication buffer of the power monitor, and wherein when the trigger condition established by the user is met in response to occurrence of a power quality event, as determined by a sensor that measures a power quality characteristic, and the processor is in an event mode, acquisition of diagnostic data is triggered and the diagnostic data is stored in power monitor memory, and detection of the trigger condition is reported; wherein the power quality event is defined by the power quality characteristic measurements meeting a power anomaly criterion; and obtaining data from the communication buffer of the power monitor through the communication link, wherein the communication buffer stores diagnostic data for conveyance to a terminal device over the communication link; and displaying the obtained data blocks on the user interface as at least one temporally-dependent waveform comprising the power anomaly, wherein the power anomaly comprises a harmonic distortion, and generating a signal to control a switch into a non-conducting state to interrupt provision of conditioned electrical power to a load when detecting the power quality event. - View Dependent Claims (11, 12, 13, 14)
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15. A tangible, non-transient computer readable medium having encoded thereon processor instructions, that when executed by a processor configures the processor to:
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establish, through a user interface of a terminal device, a trigger condition on power quality characteristic measurements, wherein when the trigger condition established by the user is met in response to occurrence of a power quality event, as determined by a sensor that measures a power quality characteristic, and the processor is in a direct mode, acquisition of diagnostic data is triggered and the diagnostic data is stored in a communication buffer of the power monitor, and wherein when the trigger condition established by the user is met in response to occurrence of a power quality event, as determined by a sensor that measures a power quality characteristic, and the processor is in an event mode, acquisition of diagnostic data is triggered and the diagnostic data is stored in power monitor memory, and detection of the trigger condition is reported; wherein the power quality event is defined by the power quality characteristic measurements meeting a power anomaly criterion; and obtain, through a communication link, a data block of a user-selected one of the power quality characteristic measurements generated by a corresponding one of a plurality of sensors distributed in a power conditioning circuit of a power monitor, wherein a communication buffer stores diagnostic data for conveyance to a terminal device over the communication link; and generate a user interface by which a user establishes the trigger condition and on which the obtained data block is displayed as at least one temporally-dependent waveform comprising a power anomaly, wherein the power anomaly comprises a harmonic distortion; and generate a signal to control a switch into a non-conducting state to interrupt provision of conditioned electrical power to a load when detecting the power quality event. - View Dependent Claims (16, 17, 18)
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Specification