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Method for detecting time information of output signal of satellite synchronous time service device

A technology for outputting signals and time information, which is applied in the direction of clocks, synchronization, circuit devices driven by synchronous motors, etc., can solve the problem that it is difficult to confirm the correctness of B code time information, difficult to detect serial message time information, and difficult to determine time information. Absolute time and other issues, to achieve the effect of being conducive to safe production and stable operation, and ensuring accuracy

Active Publication Date: 2011-02-09
STATE GRID HUBEI ELECTRIC POWER RES INST +1
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AI Technical Summary

Problems solved by technology

This method is not easy to determine the absolute time of the captured time information, so it is not easy to confirm the correctness of the B code time information corresponding to the second pulse signal, and it is not easy to detect the time information of the serial message

Method used

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  • Method for detecting time information of output signal of satellite synchronous time service device
  • Method for detecting time information of output signal of satellite synchronous time service device
  • Method for detecting time information of output signal of satellite synchronous time service device

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Embodiment Construction

[0040] Below in conjunction with accompanying drawing, invention is further described:

[0041] As a comparison, the following briefly introduces the traditional satellite synchronous timing device test method, such as figure 1 Shown in is the traditional satellite synchronous timing device test device and connection diagram.

[0042] exist figure 1 Among them, the pulse signal P_1pps output by the satellite synchronous standard clock 49 can be synchronized with the satellite time and can also be provided by an internal standard source; the satellite synchronous standard clock 49 and the oscilloscope 2 form the testing equipment; the satellite synchronous timing device 3 is the tested equipment. figure 2 It is a schematic diagram of the oscilloscope waveform under the traditional test method.

[0043] figure 1 Among them, the pulse signal output by the pulse signal output terminal 4 of the satellite synchronous standard clock 49 is connected to the detection channel A of t...

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Abstract

The invention relates to a method for detecting the time information of an output signal of a satellite synchronous time service device, which comprises the following steps: setting the output opening time T of a pulse signal output end (4) of a controllable time scale signal source (1) and setting the output opening time T into a time arrival triggering mode; matching with the controllable time scale signal source (1) to output a pulse synchronized with a satellite to start in 1pps in designated time T (27); and capturing an output signal of a satellite synchronous time transfer device (3) by a triggered oscilloscope (2) so as to finish the detection of serial message time information of the satellite synchronous time transfer device and the detection of the correctness of the B code time information of the satellite synchronous time transfer device. The method can more completely test the technical performance of the satellite synchronous time transfer device of a grid substation, thereby more completely ensuring the time synchronous accuracy of second equipment.

Description

technical field [0001] The invention relates to a method for testing electric equipment, in particular to a method for detecting time information of an output signal of a satellite synchronous timing device using satellite signals for time synchronization of electric equipment. Background technique [0002] The time synchronization performance of the grid's substation (including substations, power plants) automation system telecontrol and other related electrical secondary intelligent electronic devices (IEDs) requires an accuracy of milliseconds and above. The time synchronization performance of secondary equipment is directly related to the correctness of the operation within the sub-station (local) and between sub-stations (off-site), as well as the timely and accurate analysis and judgment of accidents. [0003] The satellite off-site time synchronization method is advanced and mature in technology, not affected by climate, and does not occupy power channels, so it is wi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G04G7/00G04G7/02G06F1/12H02J13/00G04R40/06
Inventor 陈宏潘杨
Owner STATE GRID HUBEI ELECTRIC POWER RES INST
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