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Mutual inspection method for mutually backup double clock, and time comparing device

A dual clock and clock technology, which is applied to clocks, clocks, electronic timers, etc. driven by synchronous motors, can solve the problems of high cost and large space, and achieve the effect of improving stability.

Inactive Publication Date: 2012-07-18
河南森海电气有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the present invention also provides a time synchronization device, which can realize the function of a redundant mutual backup system with only one device, so as to solve the problems of high cost and large space occupation in the prior art

Method used

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  • Mutual inspection method for mutually backup double clock, and time comparing device
  • Mutual inspection method for mutually backup double clock, and time comparing device
  • Mutual inspection method for mutually backup double clock, and time comparing device

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Embodiment Construction

[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0022] Embodiment of the device (in the following description, the master clock is also referred to as the clock for short)

[0023] Such as image 3 , Figure 4 The timing device shown includes two sets of master clocks, master clock A and master clock B. Each set of master clock includes power plug-in, CPU plug-in, APU plug-in, EXT-L plug-in (optical interface output), EXT-E plug-in (electrical interface output). The IRIG-B input and output ports of the CPU plug-in of master clock A are respectively connected to the IRIG-B output and input ports of the CPU plug-in of master clock B through optical fibers. Each master clock can receive wireless time reference signal (GPS or Beidou signal) and wired time reference signal (reference IRIG-B code signal). When the device is synchronized with the satellite signal, the output signal of the device is based on t...

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Abstract

The invention relates to a mutual inspection method for a mutually backup double clock, and a time comparing device. The mutual inspection method for the double clock, which is provided by the invention, can inspect whether IRIG-B code information of the mutually backup double clock is normal or not, and can realize automatic switching and alarming functions, so as to improve the stability of a synchronous system. One time comparing device integrates two main clocks, the hardware structure of each clock is the same as the current clock, IRIG-B input and output ports of the two clocks (CPU plug-ins) are connected correspondingly, and one main clock can receive the information from the other main clock for mutual inspection and mutual backup. One time comparing device can realize the functions of two time comparing devices originally, so that the cost is saved, and the occupied space is saved as well.

Description

technical field [0001] The invention relates to the technical field of power system time synchronization. Background technique [0002] In recent years, due to the increase of electrical equipment and electricity consumption year by year, people have higher and higher requirements for the safety and stability of the power system, and an important condition for realizing the safe and stable operation of the power system is to ensure the accuracy of the power grid time synchronization system ,Stablize. With the construction of a strong smart grid, a large number of new technologies have been promoted and applied. In particular, the wide application of IEC61850 technology in the field of power systems has put forward new requirements for the comprehensive automation technology of power system substations, especially for time synchronization, requiring relay protection devices, automation devices, measurement and control devices, and safety and stability control systems based o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G04G5/00G04G7/00
Inventor 李威鹏左伟杰祁泽旺王斐雷文鹤陆永胜何晓峰秦丽博
Owner 河南森海电气有限公司
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