Ground link timing test system and method of time synchronization device based on irig-b code

A technology of time synchronization device and synchronization device, which is applied in the direction of time division multiplexing system, synchronization, transmission system, etc., can solve the problem of inability to grasp synchronization performance, time accuracy and operating conditions in real time, decrease in time accuracy, and affect time service Problems such as stable operation of equipment to achieve the effect of improving disaster recovery capabilities

Active Publication Date: 2022-03-04
INFORMATION COMM COMPANY STATE GRID SHANDONG ELECTRIC POWER +1
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  • Application Information

AI Technical Summary

Problems solved by technology

For distributed time synchronization equipment, it is currently impossible to grasp the actual synchronization performance, time accuracy and operating conditions in real time
In addition, there are certain risks in completely relying on external satellites. For example, in the case of satellite failure, the clock device of a certain station loses contact with the satellite and becomes a time island. run

Method used

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  • Ground link timing test system and method of time synchronization device based on irig-b code
  • Ground link timing test system and method of time synchronization device based on irig-b code

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Experimental program
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Effect test

Embodiment 1

[0041] In order to overcome the problem that the time synchronization device of the factory station has no timing source, the timing accuracy is reduced, and the time synchronization device has no ground timing link in the case of internal satellite failure, the time synchronization based on the IRIG-B code provided by Embodiment 1 of the present invention Device ground link timing test system, figure 1 It is a functional block diagram of the ground link timing test system of the IRIG-B code-based time synchronization device described in Embodiment 1 of the present invention.

[0042] Such as figure 1 As shown, the time synchronization device terrestrial link timing test system based on the IRIG-B code described in Embodiment 1 of the present invention includes:

[0043] The double rubidium clock BITS is used to receive the satellite reference time signal, and calibrate the satellite reference time signal according to the time calibration frequency signal to send the IRIG-B c...

Embodiment 2

[0059] Embodiment 2 of the present invention provides the construction process of the ground link timing test system of the time synchronization device based on the IRIG-B code.

[0060] In this embodiment 2, based on the IRIG-B code-based ground link timing test system of the factory station automation time synchronization device, the satellite receiving system, cesium atomic clock, double rubidium clock BITS, and central time synchronization device are installed in the communication room of the factory station training base , communication transmission system, and central monitoring system; install plant and station time synchronization devices and communication transmission systems in the communication room of the training room; SDH transmission equipment in the communication room of the plant training base and the communication room of the training room through optical cables Interconnection, the PTN transmission equipment in the communication room of the factory station tr...

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Abstract

The invention provides a time synchronization device ground link timing test system and method based on the IRIG-B code, which belongs to the technical field of time service of the automatic time synchronization device of the plant and station. The double rubidium clock BITS receives the satellite reference time signal and the time calibration of the cesium atomic clock. Frequency signal, send the IRIG-B code timing signal to the central time synchronization device, and the central time synchronization device sends the IRIG-B code timing signal to the central monitoring system and the factory station time synchronization device; the factory station time synchronization device sends the factory station time signal Send it to the central time synchronization device, and the central time synchronization device sends the time signal of the factory station to the central monitoring system, and compares the IRIG‑B code timing signal with the time signal of the factory station to obtain the time difference. In the present invention, the double rubidium clock BITS equipment and the cesium atomic clock transmit high-precision time signals, and time synchronization is carried out through the ground timing link, which improves the disaster recovery capability of the time synchronization device, and tests the performance of the communication transmission technology on the IRIG-B code timing signal Influence, verify the validity of ground timing link transmission.

Description

technical field [0001] The invention relates to the technical field of time service of plant automation time synchronization devices, in particular to a ground link timing test system and method for time synchronization devices based on IRIG-B codes. Background technique [0002] The unified time of each power plant and substation equipment in the power grid is one of the indispensable conditions for the normal operation of the communication network. The time synchronization device is the basis for real-time data acquisition, control and accident analysis in the power secondary system, and is an important part of the safe operation of the power system. Since the performance and functions of satellite receiving systems of different manufacturers are different, it is necessary to be able to perform time synchronization normally in the event of interference and antenna failure. At present, the timing source is mainly satellite navigation system, and the commonly used satellite...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G04R20/02G04G7/00H04J3/06H04L67/12
CPCG04R20/02G04G7/00H04J3/0644H04L67/12
Inventor 田安琪魏永静张彦朱尤祥李丽周洁吕新荃王立君王晓勇江颖洁路振宇展思杰马良韩光明孙超马恺
Owner INFORMATION COMM COMPANY STATE GRID SHANDONG ELECTRIC POWER
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