CN103475437A - Testing method for time comparison accuracy of clock system based on IEEE1588 (Institute of Electrical and Electronic Engineers) - Google Patents
Testing method for time comparison accuracy of clock system based on IEEE1588 (Institute of Electrical and Electronic Engineers) Download PDFInfo
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- CN103475437A CN103475437A CN2013103651480A CN201310365148A CN103475437A CN 103475437 A CN103475437 A CN 103475437A CN 2013103651480 A CN2013103651480 A CN 2013103651480A CN 201310365148 A CN201310365148 A CN 201310365148A CN 103475437 A CN103475437 A CN 103475437A
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Abstract
The invention relates to a testing method for the time comparison accuracy of a clock system based on IEEE1588 (Institute of Electrical and Electronic Engineers). The testing method comprises the steps that (1) a 1588 master clock is used for transmitting a time comparison message to a slave clock through an interchanger and meanwhile transmitting a pulse per second signal to an oscilloscope; (2) the slave clock is used for interacting with the message of the 1588 master clock for time comparison through the interchanger and outputting a pulse per second signal to the oscilloscope; (3) the oscilloscope takes the pulse per second signal from the 1588 master clock as a trigger signal and is used for determining the time comparison accuracy between the master clock and the slave clock by observing the pulse per second signal from the slave clock. Compared with the prior art, the testing method has the advantages of high testing accuracy, high testing efficiency, high reliability and the like.
Description
Technical field
The present invention relates to a kind of clock system to the time method for testing precision, especially relate to a kind of clock system based on IEEE1588 to the time method for testing precision.
Background technology
The unification of transformer station inside to the time be that to adopt based on network sampled value transmission technology be prerequisite.Traditional transformer station to the time be the B coded signal that adopts the GPS master clock to produce, be transferred to each device by special-purpose setting network.This system for general system to the time can meet the demands fully.But sampled value is very important data, and its reliability has determined the reliability of whole Substation control, protection system.And, from current operating experience, the reliability of traditional setting network can't be competent at such requirement.
Summary of the invention
Purpose of the present invention be exactly in order to overcome the defect that above-mentioned prior art exists, provide a kind of measuring accuracy is high, testing efficiency is high, reliability the is high clock system based on IEEE1588 to the time method for testing precision.
Purpose of the present invention can be achieved through the following technical solutions:
A kind of clock system based on IEEE1588 to the time method for testing precision, it is characterized in that, comprise the following steps:
1) 1588 master clocks by switch send to the time message to secondary clock, simultaneously to oscilloscope, send pps pulse per second signal;
2) secondary clock by switch and 1588 master clock message interactions carry out to the time, and output pps pulse per second signal to oscilloscope;
3) oscilloscope will be from the pps pulse per second signal of 1588 master clocks as triggering signal, and by observe from the pps pulse per second signal track of secondary clock determine between master clock/secondary clock to the time precision.
Described switch is 1588 switches.
Described pps pulse per second signal is the 1PPS pps pulse per second signal.
Described secondary clock is provided with a plurality of.
Compared with prior art, the present invention has the following advantages:
1, measuring accuracy is high, Network Synchronization to the time technology do not need independent setting network, its to the time signal directly in the sampled value network, transmit, its to the time precision<1 microsecond, can meet fully transformer station to the time requirement;
2, testing efficiency is high, and reliability is high.
The accompanying drawing explanation
Fig. 1 is the hardware configuration schematic diagram that the present invention realizes.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
As shown in Figure 1, a kind of clock system based on IEEE1588 to the time method for testing precision, comprise the following steps:
1) 1588 master clocks 1 by switch 3 send to the time message to secondary clock 2, send pps pulse per second signals to oscilloscope 4 simultaneously;
2) secondary clock 2 by switch 3 and 1588 master clock 1 message interactions carry out to the time, and output pps pulse per second signal to oscilloscope 4;
3) oscilloscope 4 will be from the pps pulse per second signal of 1588 master clocks 1 as triggering signal, and by observe from the pps pulse per second signal track of secondary clock 2 determine between master clock/secondary clock to the time precision.
Described switch 3 is 1588 switches.Described pps pulse per second signal is the 1PPS pps pulse per second signal.Described secondary clock is provided with a plurality of.
Claims (4)
- A clock system based on IEEE1588 to the time method for testing precision, it is characterized in that, comprise the following steps:1) 1588 master clocks by switch send to the time message to secondary clock, simultaneously to oscilloscope, send pps pulse per second signal;2) secondary clock by switch and 1588 master clock message interactions carry out to the time, and output pps pulse per second signal to oscilloscope;3) oscilloscope will be from the pps pulse per second signal of 1588 master clocks as triggering signal, and by observe from the pps pulse per second signal track of secondary clock determine between master clock/secondary clock to the time precision.
- A kind of clock system based on IEEE1588 according to claim 1 to the time method for testing precision, it is characterized in that, described switch is 1588 switches.
- A kind of clock system based on IEEE1588 according to claim 1 to the time method for testing precision, it is characterized in that, described pps pulse per second signal is the 1PPS pps pulse per second signal.
- A kind of clock system based on IEEE1588 according to claim 1 to the time method for testing precision, it is characterized in that, described secondary clock is provided with a plurality of.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013103651480A CN103475437A (en) | 2013-08-20 | 2013-08-20 | Testing method for time comparison accuracy of clock system based on IEEE1588 (Institute of Electrical and Electronic Engineers) |
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| CN2013103651480A CN103475437A (en) | 2013-08-20 | 2013-08-20 | Testing method for time comparison accuracy of clock system based on IEEE1588 (Institute of Electrical and Electronic Engineers) |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721874A (en) * | 2012-05-30 | 2012-10-10 | 国网电力科学研究院武汉南瑞有限责任公司 | Device and method for digitally measuring dielectric loss by applying IEEE1588 time setting function |
| CN102882626A (en) * | 2012-10-24 | 2013-01-16 | 南京澳德思电气有限公司 | B code decoding technology fused institute of electrical and electronic engineers 1588 (IEEE1588) intelligent power grid time transmission method and device |
| CN103151839A (en) * | 2013-03-13 | 2013-06-12 | 湖北省电力公司电力科学研究院 | Intelligent substation test research system |
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2013
- 2013-08-20 CN CN2013103651480A patent/CN103475437A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721874A (en) * | 2012-05-30 | 2012-10-10 | 国网电力科学研究院武汉南瑞有限责任公司 | Device and method for digitally measuring dielectric loss by applying IEEE1588 time setting function |
| CN102882626A (en) * | 2012-10-24 | 2013-01-16 | 南京澳德思电气有限公司 | B code decoding technology fused institute of electrical and electronic engineers 1588 (IEEE1588) intelligent power grid time transmission method and device |
| CN103151839A (en) * | 2013-03-13 | 2013-06-12 | 湖北省电力公司电力科学研究院 | Intelligent substation test research system |
Non-Patent Citations (2)
| Title |
|---|
| 周晓娟: "智能变电站采用IEEE1588时钟同步关键问题分析", 《数字技术与应用》 * |
| 曾祥君: "基于IEEE1588的智能变电站时钟同步网络", 《电力科学与技术学报》 * |
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Application publication date: 20131225 |