Sampling value signal time domain characteristic detection method based on alternating-current analog-to-digital conversion response
A technology of analog-to-digital conversion and AC signal, applied in the direction of analog/digital conversion calibration/test, analog/digital conversion, code conversion, etc. question
Active Publication Date: 2018-10-12
STATE GRID HUBEI ELECTRIC POWER RES INST +2
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That is, the current relevant technical standards do not clarify the physical relationship between "time parameters, AC sampling behavior, sampling value messages and their communication photoelectric signals" (for example, the time base for evaluating message dispersion is not clear)
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[0062] The technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention.
[0063] This application is based on the analog-to-digital equipment detection circuit and the analog-to-digital conversion delay results obtained from the calculation of "Other Case Authorization 1", by replacing the "sampling value digital-to-analog converter" with a "controllable time-scale frequency source" to reconstruct the detection circuit, Taking the time synchronization signal and time synchronization frequency signal of the "controllable time scale frequency source" of "Other Case Authorization 2" as parameters, a method for detecting the time domain characteristics of the sampled value signal based on the AC analog-to-digital conversion response is given.
[0064] In a method for detecting time-domain characteristics of a sampled value signal based on an AC analog-to-digital conversion respons...
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The invention provides a sampling value signal time domain characteristic detection method based on an alternating-current analog-to-digital conversion response. The method is based on an alternating-current C analog quantity signal, an alternating-current sampling value digital signal of a communication physical layer and real-time response characteristics of information of the alternating-current sampling value digital signal, is in combination with parameters of a time synchronization signal and is used for detecting the correctness and the stability of a sampling value signal response timeof second time-domain alternating-current sampling of alternating-current analog-to-digital conversion device. According to a time synchronization signal input state of the alternating-current analog-to-digital conversion device, an alternating-current signal input, the alternating-current sampling value digital signal of the communication physical layer and an information output of the alternating-current sampling value digital signal, the parameters of the time synchronization signal and a time synchronization frequency signal are adopted, and alternating-current sampling value signal timedomain response characteristics of the alternating-current analog-to-digital conversion device in a time synchronization working mode and a switched time out-of-step working mode are measured, so thatthe method can be used for evaluating the correctness of the alternating-current sampling time and the stability of the alternating-current sampling frequency of the alternating-current analog-to-digital conversion device, and accords with a principle of value dissemination and has a characteristic of physical display.
Description
technical field [0001] The invention relates to a detection method for electric equipment, in particular to a detection method for time-domain characteristics of a sampling value signal based on an AC analog-to-digital conversion response. Background technique [0002] This application is based on the "Real-time Response Detection Method of AC Analog-to-Digital Conversion Equipment Based on Physical Layer Sampling Values DL2014 1 0144300.7" (hereinafter referred to as "Another Authorization 1") and "Time Synchronization Detection of Network Time Service IED Based on Physical Layer Time Information" Method DL2014 1 0203624.3" (hereinafter referred to as "another case authorization 2"), proposes a method for detecting the correctness and stability of the output response time of the sampled value signal output by AC sampling in the second time domain of an AC analog-to-digital conversion device. [0003] The AC measurement of smart substation (referred to as intelligent stati...
Claims
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CPCH03M1/1095
Inventor 陈宏詹学磊文博蔡勇黎恒烜周虎兵雷扬张侃君李鹏苏昊宿磊叶庞琪杜镇安邹坤显
Owner STATE GRID HUBEI ELECTRIC POWER RES INST