Synchronizing unit and method for synchronizing distributed wave recording devices

A technology of synchronization unit and wave recording device, which is applied in the direction of measuring device, electrical components, automatic power control, etc., can solve the problems of large system time and sampling phase error, high precision, and no use, and achieve the effect of improving accuracy.

Active Publication Date: 2010-09-15
EAST CHINA GRID +1
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  • Abstract
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Problems solved by technology

[0002] The current distributed digital wave recording device faces three problems: (1) it does not use a unified timing signal to calibrate the time of each wave recording unit, resulting in excessive system time errors of each wave recording unit; (2) it does not use a unified (3) Since the GPS B code decoding is not well combined with the self-time keeping, the accuracy is high when there is a GPS signal, and when the GPS signal is lost, the system time and The sampling phase error is very large; (4) when the IEC618509-2LE analog quantity and the GOOSE switch quantity are connected, the time scale error is greater than 3ms

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  • Synchronizing unit and method for synchronizing distributed wave recording devices
  • Synchronizing unit and method for synchronizing distributed wave recording devices
  • Synchronizing unit and method for synchronizing distributed wave recording devices

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0032] Embodiment of a synchronization unit

[0033] figure 1 The structure of an embodiment of the synchronization unit of the present invention is shown. The synchronization unit of this embodiment includes a GPS decoding chip 10 , an RTC self-timekeeping chip 11 , a single-chip microcomputer 12 , a high-precision temperature-compensated crystal oscillator 13 , and a programmable logic circuit (CPLD) 14 . The high-precision temperature-compensated crystal oscillator 13 is connected to the GPS decoding chip 10 , the RTC (Real Time Clock, real-time clock) self-timekeeping chip 11 and the single-chip microcomputer 12 . The GPS decoding chip 10 is connected to a single-chip microcomputer 12 , and the single-chip microcomputer 12 is connected to an editable logic circuit 14 . The RTC self-timekeeping chip 11 is bidirectionally connected to the single-...

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Abstract

The invention discloses a synchronizing unit and a method for synchronizing distributed wave recording devices, which can realize high-precision synchronization and improve the accuracy of wave recording analysis. The technical scheme is that: the synchronizing method comprises the following steps of: (1) realizing the time synchronization of each wave recording device with second pulse output by the synchronizing unit and serial port time data; (2) eliminating a sampling beginning error in power-on with the second pulse output by the synchronizing unit; (3) realizing the sampling interruption synchronization of the wave recording devices with sampling pulse output by the synchronizing unit; and (4) realizing the time scale precision of the sampling data of the wave recording devices with 20-millisecond pulse output by the synchronizing unit. The synchronizing unit and the method for synchronizing the distributed wave recording devices are applied to electric power systems.

Description

technical field [0001] The invention relates to a synchronization unit and a synchronization method of a distributed wave recording device. Background technique [0002] The current distributed digital wave recording device faces three problems: (1) it does not use a unified timing signal to calibrate the time of each wave recording unit, resulting in excessive system time errors of each wave recording unit; (2) it does not use a unified (3) Since the GPS B code decoding is not well combined with the self-time keeping, the accuracy is high when there is a GPS signal, and when the GPS signal is lost, the system time and The sampling phase error is very large; (4) when the IEC618509-2LE analog quantity and the GOOSE switch quantity are connected, the time scale error is greater than 3ms. Contents of the invention [0003] The purpose of the present invention is to solve the above problems and provide a synchronization unit that can realize high-precision synchronization. ...

Claims

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Application Information

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IPC IPC(8): H03L7/06G04G5/00G01S5/02G04R20/04
Inventor 陈建民岑宗浩骆敬年邱智勇韩学军周新雅黄捷真珍
Owner EAST CHINA GRID
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