CN1533046A - New low voltage power line carrier signal pickup method - Google Patents
New low voltage power line carrier signal pickup method Download PDFInfo
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- CN1533046A CN1533046A CNA031087507A CN03108750A CN1533046A CN 1533046 A CN1533046 A CN 1533046A CN A031087507 A CNA031087507 A CN A031087507A CN 03108750 A CN03108750 A CN 03108750A CN 1533046 A CN1533046 A CN 1533046A
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- power line
- carrier signal
- voltage power
- carrier
- pick
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Abstract
This invention can be used in a power line carrier communication system. Traditional pick-up method to carrier signals is to pick up signals between a live wire and a zero line to be easily attenuated by the parallel load on the wire or even filtered or absorbed to influence the effectiveness and reliability of carrier data transmission. The new method is to pick up signals between the zero and ground wires to avoid the attenuation and filter of a load to the carrier signals since loads on the line are usually parallel between the live and the ground wires to ensure the stability and accuracy of the transmission.
Description
The present invention can be used in the power line carrier communication, belongs to the electric line carrier communication technical field, and it is different with traditional power line carrier communication picking up signal method.Traditional carrier signal pick-up method is to pick up between live wire and zero line, and we know, many loads in parallel on the power line are very big to the influence of carrier signal attenuation.Especially those are used to adjust the shunt capacitor of power factor of electric network, concerning the carrier communication signal of hundreds of KHZ, be equivalent to short circuit, be easy to carrier signal be filtered or absorb, make signal can't arrive receiving terminal, thereby influence the validity and the reliability of carrier data transmission.And the new method of this power line carrier picking up signal (hereinafter to be referred as this method), it then is pickoff signals between zero line and ground wire, because the load on the power line generally all is and is connected between live wire and the ground wire, therefore this method just can avoid load on the power line to influences such as the decay of carrier signal, filtrations effectively, thereby guarantees the reliability and the accuracy of carrier signal transmission.
For load as shown in drawings to the influence of carrier signal.
It among Fig. 1 traditional carrier signal sampling method, generally all be to adopt AN, BN, CN promptly between live wire and zero line, to pick up, as we can see from the figure, the connected mode of load in parallel in the electrical network (among the figure be example with the compensation condenser group) is identical with the sampling mode of carrier signal, because the characteristic of electric capacity has determined it to be easy to carrier signal be filtered or absorb, thereby cause the decay of signal.
What adopt among Fig. 2 is this new power line carrier picking up signal method, promptly between N and ground, carrier signal is taken a sample and detect, avoided filtration and the absorption of shunt capacitor effectively to carrier signal, therefore compare with traditional sampling method, can guarantee to greatest extent that carrier signal normally transmits accurately.
Claims (2)
1, a kind of new low voltage power line carrier picking up signal method the invention is characterized in when picking up carrier signal on low-voltage power line it is to pick up between zero line and ground wire.
2, according to the low voltage power line carrier signal new method of claim 1, the invention is characterized in different from picking up between live wire and the zero line when low-voltage power line picks up carrier signal usually, but between zero line and ground wire, pick up, so just can avoid load on the power line to influences such as the decay of carrier signal, filtrations effectively, thereby guarantee accuracy and the reliability that carrier signal transmits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031087507A CN1533046A (en) | 2003-03-26 | 2003-03-26 | New low voltage power line carrier signal pickup method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031087507A CN1533046A (en) | 2003-03-26 | 2003-03-26 | New low voltage power line carrier signal pickup method |
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| Publication Number | Publication Date |
|---|---|
| CN1533046A true CN1533046A (en) | 2004-09-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CNA031087507A Pending CN1533046A (en) | 2003-03-26 | 2003-03-26 | New low voltage power line carrier signal pickup method |
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| CN (1) | CN1533046A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1649281B (en) * | 2004-12-30 | 2010-10-27 | 郭建国 | Asymmetric power carrier wave communication device |
| CN101980415A (en) * | 2010-10-09 | 2011-02-23 | 华北电力大学 | Method and system for implementing active uplink power line power-frequency communication |
| CN101980451A (en) * | 2010-10-09 | 2011-02-23 | 华北电力大学 | Time-interval-adaptation-based power line power frequency communication system and method |
| CN105575099A (en) * | 2015-12-17 | 2016-05-11 | 广州市雅江光电设备有限公司 | Ground differential signal transmission circuit |
| CN106533509A (en) * | 2015-09-11 | 2017-03-22 | 国网天津市电力公司 | Method for extending power line carrier transmission distance |
-
2003
- 2003-03-26 CN CNA031087507A patent/CN1533046A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1649281B (en) * | 2004-12-30 | 2010-10-27 | 郭建国 | Asymmetric power carrier wave communication device |
| CN101980415A (en) * | 2010-10-09 | 2011-02-23 | 华北电力大学 | Method and system for implementing active uplink power line power-frequency communication |
| CN101980451A (en) * | 2010-10-09 | 2011-02-23 | 华北电力大学 | Time-interval-adaptation-based power line power frequency communication system and method |
| CN101980415B (en) * | 2010-10-09 | 2012-10-10 | 华北电力大学 | Method and system for implementing active uplink power line power-frequency communication |
| CN101980451B (en) * | 2010-10-09 | 2013-10-30 | 华北电力大学 | Time-interval-adaptation-based power line power frequency communication system and method |
| CN106533509A (en) * | 2015-09-11 | 2017-03-22 | 国网天津市电力公司 | Method for extending power line carrier transmission distance |
| CN105575099A (en) * | 2015-12-17 | 2016-05-11 | 广州市雅江光电设备有限公司 | Ground differential signal transmission circuit |
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| WD01 | Invention patent application deemed withdrawn after publication |