CN1181624C - Transmission mode of powder distribution wire and signal sampler in power transmission system - Google Patents
Transmission mode of powder distribution wire and signal sampler in power transmission system Download PDFInfo
- Publication number
- CN1181624C CN1181624C CNB011081694A CN01108169A CN1181624C CN 1181624 C CN1181624 C CN 1181624C CN B011081694 A CNB011081694 A CN B011081694A CN 01108169 A CN01108169 A CN 01108169A CN 1181624 C CN1181624 C CN 1181624C
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- signal
- power distribution
- transformer
- sampling device
- line
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 30
- 239000000843 powder Substances 0.000 title 1
- 238000005070 sampling Methods 0.000 claims abstract description 32
- 238000004804 winding Methods 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 10
- 230000007935 neutral effect Effects 0.000 claims description 7
- 238000004891 communication Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The present invention relates to a transmission mode of a power distribution wire and a signal sampler in a power transmission system. Information signals are loaded to a zero line or a live wire of a power distribution wire for single wire transmission; one end of the primary winding of the transformer of the signal sampler is connected to the power distribution wire with loaded information signals for single wire sampling and the other end is earthed. The present invention has the characteristics that the transmission mode is simple and the sampling process and sampled signals are not affected by power network terminals fundamentally.
Description
Technical field
The present invention relates to a kind of power distribution system for transmitting, signal sampling device in particularly a kind of power distribution transmission means and the transmission system thereof of passing through.
Background technology
People utilize the power distribution transmit information signals in the routine techniques, on the zero line and live wire that are carried in after the information signal modulation in the power distribution, like this, signal sampling device in the transmission system must have two terminals, these two terminals connect zero line and the live wire in the power distribution respectively, in the sampling process, interference signal on the power distribution is simultaneously sampled with high-frequency modulation signal, cause high-frequency modulation signal to be difficult to demodulation, cause the communication device that utilizes the power distribution transmission in use must select the less period of interference signal, finally can not get practical application and popularization.
Invention constitutes
The objective of the invention is to overcome weak point of the prior art, a kind of transmission means is simple, circuit disturbs few and provide, the power distribution transmission means of being convenient to take a sample, further purpose of the present invention is to provide and is subjected to the electrical network load effect less in a kind of sampling process, the signal sampling device in the sampled signal in the interference signal small electric power distribution wire transmission system.
The objective of the invention is to realize by following approach.
The power distribution transmission method may further comprise the steps:
A kind of modulating apparatus is provided;
The signal output part of modulating apparatus is connected in A line or the live wire arbitrary, or zero line with A line in the power distribution;
A kind of signal sampling device and a kind of signal demodulating equipment that includes transformer is provided, and signal sampling device is connected with signal demodulating equipment;
The wherein termination of the former limit of transformer in signal sampling device winding is connected with signal output part in the modulating apparatus by the A line in the power distribution, the former limit of transformer another termination ground connection of winding, signal is modulated on the A line that is transferred to after the carrier signal in the power distribution by modulating apparatus, the signal sampling device carrier signal on this A line of taking a sample is sent into signal demodulating equipment then and is carried out demodulation.
Signal sampling device in the power distribution line transmission system, comprise electric capacity and transformer, it constitutes main points: the wherein termination in the winding two ends of the former limit of transformer be connected by electric capacity or with the electrical network zero line or with the electrical network live wire in wherein one be connected another termination ground connection.
All power consumption equipments all must produce between at least two wiring (phase line and zero line) the load effect of electrical network, and all are loaded with high-frequency modulation signal in every wiring.The present invention now only takes a sample to a wiring, and the load variations of electric terminal will be difficult to sampled signal is exerted an influence.
Here, the connected mode of electric capacity and transformer is formed a kind of high-frequency signal passage, and winding one termination, the former limit of transformer both can single connecting to neutral line, the line of also can singly starting to exchange fire, because the connecting to neutral line equals to connect three-phase, then there is the problem that needs to arrive again through winding other phase in the line of starting to exchange fire, therefore, is best with single connecting to neutral line.
Sort signal sampler of the present invention also can be used as sender unit simultaneously.
Purpose of the present invention can also realize by following approach.
There are several modes on the ground of ground connection indication, below is wherein two kinds:
The ground of ground connection indication is the ground (being the earth) of transformer neutral point;
The ground of ground connection indication is the ground of wiring board, and at this moment, the line that connects winding one termination, the former limit of transformer and power network wiring (zero line or live wire) becomes an antenna, and the wiring board here refers to the wiring board on the signal sampling device.
Mate with electrical network better for the impedance that makes sampler, can take following mode:
Transformer is a kind of variable transformer;
Electric capacity is a kind of variable capacitance.
In sum, the present invention has following advantage compared to existing technology: this single line transmission and corresponding single line sampling, extremely simultaneously simple in transmission means, make sampling process and sampled signal not be subjected to the influence of grid equipment load substantially, thereby the communication signal decay that brings because of this load variations and interference source, problem that interference signal is many have been solved, a time in office all can be sampled to ideal signal, make this undertaken by power line that the application of transmission manner and popularization provide may.
Description of drawings
Accompanying drawing is the circuit diagram of most preferred embodiment of the present invention.
Below we carry out more detailed description to the present invention in conjunction with the accompanying drawings.
Most preferred embodiment
Most preferred embodiment:
The power distribution transmission method may further comprise the steps:
A kind of modulating apparatus is provided;
The signal output part of modulating apparatus is connected with zero line in the power distribution;
A kind of signal sampling device and a kind of signal demodulating equipment that includes transformer is provided, and signal sampling device is electrically connected with the signal demodulation;
Wherein termination in the winding of the former limit of transformer in the signal sampling device is connected with signal output part in the modulating apparatus by the zero line in the power distribution, the former limit of transformer another termination ground connection of winding, signal is modulated on the A line that is transferred to after the carrier signal in the power distribution by modulating apparatus, the signal sampling device carrier signal on this A line of taking a sample is sent into signal demodulating equipment then and is carried out demodulation.
With reference to accompanying drawing, the signal sampling device in the power distribution line transmission system comprises electric capacity 2 and transformer 1, and winding one termination, the former limit of transformer is by the zero line of electric capacity 2 outside electric power network, and another termination connects the ground of transformer neutral point.Electric capacity 2 is formed a kind of high-frequency signal passage with transformer 1 former limit winding, is carried in high-frequency modulation signal on the electrical network zero line by this high-frequency signal passage institute gating, but and is become restituted signal after the transformation and export to follow-up demodulating equipment from transformer secondary winding.Electric capacity 2 is a kind of variable capacitances.
It is same as the prior art that present embodiment is not stated part.
Claims (8)
1, the power distribution transmission method may further comprise the steps,
1.1 a kind of modulating apparatus is provided,
1.2 the signal output part of modulating apparatus is connected with A line in the power distribution, in A line or the live wire arbitrary, or zero line,
1.3 a kind of signal sampling device and a kind of signal demodulating equipment that includes transformer is provided, and signal sampling device is electrically connected with signal demodulating equipment,
1.4 the wherein termination in the winding of the former limit of transformer in the signal sampling device is connected with signal output part in the modulating apparatus by the A line in the power distribution, the former limit of transformer another termination ground connection of winding, signal is modulated on the A line that is transferred to after the carrier signal in the power distribution by modulating apparatus, the signal sampling device carrier signal on this A line of taking a sample is sent into signal demodulating equipment then and is carried out demodulation.
2. power distribution transmission method according to claim 1 is characterized in that the ground that the signal sampling device transformer is connect is the ground of transformer neutral point.
3. power distribution transmission method according to claim 1 is characterized in that the ground that the signal sampling device transformer is connect is the ground of wiring board.
4. the signal sampling device in the power distribution line transmission system, comprise electric capacity (2) and transformer (1), it is characterized in that, wherein termination in the winding two ends of the former limit of transformer (1) by electric capacity (2) or be connected with the electrical network zero line or with the electrical network live wire in wherein one be connected another termination ground connection.
5. the signal sampling device in the power distribution line transmission system according to claim 4 is characterized in that, ground connection refer to is the ground of transformer (1) neutral point.
6. the signal sampling device in the power distribution line transmission system according to claim 4 is characterized in that, the ground of ground connection indication is the ground of wiring board.
7. the signal sampling device in the power distribution line transmission system according to claim 4 is characterized in that, transformer (1) is a kind of variable transformer.
8. the signal sampling device in the power distribution line transmission system according to claim 4 is characterized in that, electric capacity (2) is a kind of variable capacitance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011081694A CN1181624C (en) | 2001-03-13 | 2001-03-13 | Transmission mode of powder distribution wire and signal sampler in power transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011081694A CN1181624C (en) | 2001-03-13 | 2001-03-13 | Transmission mode of powder distribution wire and signal sampler in power transmission system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1374763A CN1374763A (en) | 2002-10-16 |
| CN1181624C true CN1181624C (en) | 2004-12-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011081694A Expired - Fee Related CN1181624C (en) | 2001-03-13 | 2001-03-13 | Transmission mode of powder distribution wire and signal sampler in power transmission system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1181624C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105652061A (en) * | 2014-11-14 | 2016-06-08 | 武陟县电业总公司 | Overvoltage signal sampling device for high voltage transmission line |
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2001
- 2001-03-13 CN CNB011081694A patent/CN1181624C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1374763A (en) | 2002-10-16 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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Owner name: STATE ELECTRIC NET CROP. Free format text: FORMER OWNER: FUJIAN PROV. INST. OF POWER EXPERIMENT Effective date: 20130220 Owner name: FUJIAN ELECTRIC POWER CO., LTD. FUJIAN ELECTRIC PO Effective date: 20130220 |
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Free format text: CORRECT: ADDRESS; FROM: 350007 FUZHOU, FUJIAN PROVINCE TO: 100031 DONGCHENG, BEIJING |
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| TR01 | Transfer of patent right |
Effective date of registration: 20130220 Address after: 100031 West Chang'an Avenue, Beijing, No. 86 Patentee after: State Grid Corporation of China Patentee after: Fujian Electric Power Co., Ltd. Patentee after: Fujian Electric Power Co., Ltd., Electric Power Research Institute Address before: 350007 No. 48, Garden Road, Cangshan District, Fujian, Fuzhou Patentee before: Fujian Electric Power Testing and Research Institute |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20041222 Termination date: 20190313 |
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| CF01 | Termination of patent right due to non-payment of annual fee |