CN105049086A - Out-of-phase power line carrier system for alternating-current transmission line - Google Patents
Out-of-phase power line carrier system for alternating-current transmission line Download PDFInfo
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- CN105049086A CN105049086A CN201510546891.5A CN201510546891A CN105049086A CN 105049086 A CN105049086 A CN 105049086A CN 201510546891 A CN201510546891 A CN 201510546891A CN 105049086 A CN105049086 A CN 105049086A
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Abstract
The invention discloses an out-of-phase power line carrier system for an alternating-current transmission line, relates to the technical field of communication, and aims to realize power line carriers among out-of-phase power lines. The system comprises a three-phase alternating-current transmission line, wherein the three-phase alternating-current transmission line is provided with data coupling units on at least two out-of-phase phase lines; each data coupling unit comprises a line side transformer and a line side coupling capacitor for coupling power line carrier communication data onto the phase lines; and an inter-line coupling capacitor is connected between the out-of-phase phase lines on which the data coupling units are arranged. The system provided by the invention is suitable for power carrier communication of the alternating-current transmission line.
Description
Technical field
The present invention relates to the communication technology, particularly relate to a kind of technology of non-phase power carrier system of alternating current circuit.
Background technology
Power carrier communication has obtained commonplace application at low-voltage alternating-current electrical network.Power carrier mode in low-voltage alternating-current electrical network as shown in Figure 2, AC in Fig. 2 is alternating-current voltage source, Ls21, Ls22 are equivalent reactance, the data of power carrier communication are coupled on power line at mains side by transformer T21 and electric capacity C21, are then coupled on power line by transformer T22 and electric capacity C22 in load U21 side.
But, apply in the circuit that power carrier communication all directly can only be communicated with at power line at present, at three-phase AC line not between homophase, just cannot use power carrier communication scheme.
Summary of the invention
For the defect existed in above-mentioned prior art, technical problem to be solved by this invention be to provide a kind of can in the non-phase power carrier system not realizing the alternating current circuit of power carrier communication between homophase of three-phase AC line.
In order to solve the problems of the technologies described above, the non-phase power carrier system of a kind of alternating current circuit provided by the present invention, comprises three-phase AC line; Described three-phase AC line is at least equipped with data coupling unit in the phase line of two non-homophases, each data coupling unit all include for by power carrier communication data coupling to the line side transformer in phase line, line side coupling capacitance; Wherein, data coupling unit is being housed and is being connected to coupling capacitance between line between the phase line of non-homophase.
The non-phase power carrier system of alternating current circuit provided by the invention, electric capacity is utilized to lead to high frequency and the characteristic of resistance low frequency, by coupling capacitance between line by mutually isolated for power frequency power between phase and phase, and power carrier communication data can transmitted between phase and phase, thus the power carrier communication that can realize between phase and phase, greatly widen the range of application of power carrier.
Accompanying drawing explanation
Fig. 1 is the non-phase power carrier system of the alternating current circuit of the embodiment of the present invention;
Fig. 2 is the power carrier communication schematic diagram of low-voltage alternating-current electrical network.
Embodiment
Illustrate below in conjunction with accompanying drawing and embodiments of the invention are described in further detail; but the present embodiment is not limited to the present invention; every employing analog structure of the present invention and similar change thereof, all should list protection scope of the present invention in, the pause mark in the present invention all represent and relation.
As shown in Figure 1, the non-phase power carrier system of a kind of alternating current circuit that the embodiment of the present invention provides, comprises three-phase AC line; Described three-phase AC line is equipped with data coupling unit in each phase line;
Data coupling unit in A phase phase line has two, mains side data coupling unit wherein include for by power carrier communication data coupling to A phase line side transformer Ta1, A phase line side coupling capacitance Ca1 in A phase phase line, the data coupling unit of load Ua side include for by power carrier communication data coupling to A phase line side transformer Ta2, A phase line side coupling capacitance Ca2 in A phase phase line;
Data coupling unit in B phase phase line has two, mains side data coupling unit wherein include for by power carrier communication data coupling to B phase line side transformer Tb1, B phase line side coupling capacitance Cb1 in B phase phase line, the data coupling unit of load Ub side include for by power carrier communication data coupling to B phase line side transformer Tb2, B phase line side coupling capacitance Cb2 in B phase phase line;
Data coupling unit in C phase phase line has two, mains side data coupling unit wherein include for by power carrier communication data coupling to C phase line side transformer Tc1, C phase line side coupling capacitance Cc1 in C phase phase line, the data coupling unit of load Uc side include for by power carrier communication data coupling to C phase line side transformer Tc2, C phase line side coupling capacitance Cc2 in C phase phase line;
Wherein, data coupling unit is being housed and is being connected to coupling capacitance between line between the phase line of non-homophase; Wherein, be connected between A phase phase line with B phase phase line to be connected between coupling capacitance Cab, B phase phase line with C phase phase line between line between line and be connected to coupling capacitance Cca between line between coupling capacitance Cbc, C phase phase line with A phase phase line.
The operation principle of the embodiment of the present invention is as follows:
Three-phase AC line has a common zero line N, power carrier communication can be carried out according to the existing coupled modes shown in Fig. 2 completely in each phase inside, characteristic due to electric capacity is logical high frequency, resistance low frequency, like this between phase and phase, high-frequency carrier signal through coupling capacitance between line, thus can realize power carrier communication between phase and phase, and power frequency power is between phase and phase then mutually isolated by coupling capacitance between line.
In other embodiment of the present invention, also only in the phase line needing to carry out power carrier communication, data coupling unit can be housed, also only coupling capacitance between line can be connected between the non-homophase phase line needing to carry out power carrier communication, such as only need to carry out power carrier communication between A phase phase line with B phase phase line, only in A phase phase line, B phase phase line, data coupling unit can be housed, and be connected to coupling capacitance between line between A phase phase line, B phase phase line.
Claims (1)
1. a non-phase power carrier system for alternating current circuit, comprises three-phase AC line; Described three-phase AC line is at least equipped with data coupling unit in the phase line of two non-homophases, each data coupling unit all include for by power carrier communication data coupling to the line side transformer in phase line, line side coupling capacitance; It is characterized in that: data coupling unit is being housed and is being connected to coupling capacitance between line between the phase line of non-homophase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510546891.5A CN105049086B (en) | 2015-08-31 | 2015-08-31 | The non-phase power carrier system of alternating current circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510546891.5A CN105049086B (en) | 2015-08-31 | 2015-08-31 | The non-phase power carrier system of alternating current circuit |
Publications (2)
| Publication Number | Publication Date |
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| CN105049086A true CN105049086A (en) | 2015-11-11 |
| CN105049086B CN105049086B (en) | 2018-01-09 |
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| CN201510546891.5A Active CN105049086B (en) | 2015-08-31 | 2015-08-31 | The non-phase power carrier system of alternating current circuit |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2788202Y (en) * | 2005-02-05 | 2006-06-14 | 李建岐 | Electric power line phase searcher |
| CN101295871A (en) * | 2007-04-26 | 2008-10-29 | 发那科株式会社 | Laser |
| US20090134699A1 (en) * | 2007-11-23 | 2009-05-28 | Korea Electro Technology Research Institute | Signal Coupling Apparatus For Power Line Communications Using A Three-Phase Four-Wire Power Line |
| CN201336572Y (en) * | 2008-12-31 | 2009-10-28 | 张伟明 | Remote automatic management system of middle and low voltage power distribution network |
| CN101572407A (en) * | 2008-03-12 | 2009-11-04 | 东芝电梯株式会社 | Apparatus for reducing leak current of elevator |
| KR101037729B1 (en) * | 2006-08-16 | 2011-05-27 | (주)오성메가파워 | The Automatic Insulation Detecting system for power line |
| US20130170077A1 (en) * | 2011-09-07 | 2013-07-04 | Siemens Aktiengesellschaft | Method for operating a ground fault interrupter as well as ground fault interrupter for a frequency converter |
| CN205029664U (en) * | 2015-08-31 | 2016-02-10 | 上海泓语电气技术有限公司 | Non - homophase electric carrier system of alternating current circuit |
-
2015
- 2015-08-31 CN CN201510546891.5A patent/CN105049086B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2788202Y (en) * | 2005-02-05 | 2006-06-14 | 李建岐 | Electric power line phase searcher |
| KR101037729B1 (en) * | 2006-08-16 | 2011-05-27 | (주)오성메가파워 | The Automatic Insulation Detecting system for power line |
| CN101295871A (en) * | 2007-04-26 | 2008-10-29 | 发那科株式会社 | Laser |
| US20090134699A1 (en) * | 2007-11-23 | 2009-05-28 | Korea Electro Technology Research Institute | Signal Coupling Apparatus For Power Line Communications Using A Three-Phase Four-Wire Power Line |
| CN101572407A (en) * | 2008-03-12 | 2009-11-04 | 东芝电梯株式会社 | Apparatus for reducing leak current of elevator |
| CN201336572Y (en) * | 2008-12-31 | 2009-10-28 | 张伟明 | Remote automatic management system of middle and low voltage power distribution network |
| US20130170077A1 (en) * | 2011-09-07 | 2013-07-04 | Siemens Aktiengesellschaft | Method for operating a ground fault interrupter as well as ground fault interrupter for a frequency converter |
| CN205029664U (en) * | 2015-08-31 | 2016-02-10 | 上海泓语电气技术有限公司 | Non - homophase electric carrier system of alternating current circuit |
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| Publication number | Publication date |
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| CN105049086B (en) | 2018-01-09 |
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Effective date of registration: 20170822 Address after: 261000 No. 2, Central Road, comprehensive bonded area, Shandong, Weifang Applicant after: Shandong Zhongda Power Technology Co.,Ltd. Address before: 200331 room 1, building 339, No. 1035, Lane 1203, Qilian Road, Putuo District, Shanghai Applicant before: SHANGHAI HONYO ELECTRIC Co.,Ltd. |
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Effective date of registration: 20180408 Address after: 261000 No. 2, Central Road, comprehensive bonded area, Shandong, Weifang Patentee after: SHANDONG SANJING LIGHTING SCIENCE & TECHNOLOGY Co.,Ltd. Address before: 261000 No. 2, Central Road, comprehensive bonded area, Shandong, Weifang Patentee before: Shandong Zhongda Power Technology Co.,Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Non-Inphase Power Carrier System for AC Lines Effective date of registration: 20220815 Granted publication date: 20180109 Pledgee: Weifang Development Branch of Industrial and Commercial Bank of China Ltd. Pledgor: SHANDONG SANJING LIGHTING SCIENCE & TECHNOLOGY Co.,Ltd. Registration number: Y2022980012458 |