CN2115622U - High frequency carrier channels mixed coupling filter - Google Patents
High frequency carrier channels mixed coupling filter Download PDFInfo
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- CN2115622U CN2115622U CN 92202230 CN92202230U CN2115622U CN 2115622 U CN2115622 U CN 2115622U CN 92202230 CN92202230 CN 92202230 CN 92202230 U CN92202230 U CN 92202230U CN 2115622 U CN2115622 U CN 2115622U
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- phase
- transformer
- filter
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- impedance matching
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Abstract
The utility model discloses a mixed coupling filter with carrier high frequency channel, which is suitable for carrier wave communication of electric power line. The utility model comprises an impedance matching transformer and two high pass filters. The front end of the secondary coil of the impedance matching transformer and the capacitance end of the high pass filter are respectively and successively connected with the central head and the two ends of the secondary coil of a differentially connected transformer. The two phases of power line adopting the utility model can form a phase-phase channel and a phase-grounding channel which have no disturbance to each other. Thus, combined phase common channels are achieved, with investment saving, transmission quality and reliability of channels improvement, and loss of high frequency channels in long distance reduction.
Description
The utility model is particularly related to a kind of carrier wave hf channel hybrid coupled filter that uses in the power-line carrier communication system that is applicable to.
Power line carrier hf channel coupled modes in the past have the mode that is coupled mutually and coupled modes mutually.The mode that is coupled mutually, the process equipment of use is many, investment is high, thereby uneconomical, in fact seldom adopts; And adopt at present be used to constitute the filter joint of passage mutually, be to constitute by impedance matching transformer and high pass filter, in use with three-phase power line in one mutually and the earth passage with constituting phase.Because ground conductivity is low; thereby the phase ground coupled modes of this employing filter joint formation; transmission quality and poor reliability; the long range signals loss is big; meet weather such as overcast and rainy humidity, signal to noise ratio reduces, carrier current protection is malfunctioning, remote motion signal is not normal and situation such as communicating interrupt happens occasionally, and is seriously threatening the safe operation of electric power system; add putting into operation in a large number of carrier current protection, make passage crowded.
The purpose of this utility model is to provide a kind of and not only can be used for being coupled mutually, but also can be used for coupling mutually and do not disturb mutually; thereby improve transmission quality and reliability, minimizing long range signals loss, make carrier current protection transceiver and electric wave carrier close mutually the also carrier wave hf channel hybrid coupled filter of usefulness.
The utility model is achieved in that it has an impedance matching transformer and two high pass filters, it also has a differential transformer, electric capacity one end of the head end of the secondary coil of said impedance matching transformer and above-mentioned two high pass filters is connected on the centre cap and the two ends of the secondary coil of differential transformer respectively successively, and the two ends of the primary winding of said differential transformer and impedance matching transformer and tap are the input and output terminal of this filter.
According to above-mentioned said carrier wave hf channel hybrid coupled filter, first and second coil ratio of described differential transformer is 1.7-2.1, and first and second coil ratio of described impedance matching transformer is above-mentioned ratio
/ 2, so that its impedance matching.
Below in conjunction with drawings and Examples the utility model is elaborated:
Fig. 1 is an electrical schematic diagram of the present utility model;
Fig. 2 is physical cabling figure of the present utility model;
As shown in Figure 1, it has an impedance matching transformer B2 and two high pass filters that are made of difference series capacitors (C01-C02) and inductance coil (L01-L02), said inductance coil (L01-L02) is also as drainage coil and a discharging gap F is arranged, two capacitance terminal (13 and 14) of the head end 7 of the secondary coil of said impedance matching transformer B2 and high pass filter also are connected on centre cap 2 and two ends (1 and 3) of the secondary coil of differential transformer (B1) respectively successively, said transformer (B1, the two ends of primary winding B2) and tap (6,4 and 5 and 11,9 and 10) be the input and output terminal of this filter, the end 8 of the secondary coil of said transformer (B2) is the earth terminal of this filter, node (15 and 16) is the binding post of this filter, input impedance according to this filter is 100 Ω, the impedance of differential transformer secondary coil side is between 300-450 Ω, thereby can get one of differential transformer (B1), the secondary coil turn ratio is 1.7-2.1, above-mentioned ratio is 2 in the present embodiment, so definite impedance matching transformer (B2) one, the secondary coil turn ratio is
As shown in Figure 2, when wiring, with at least two above-mentioned filters (L1, L2 ...) binding post (15 and 16,15 ' and 16 ' ...) by coupling capacitor (CA1 and CB1, CA2 and CB2 ...) be connected on two phase lines of power line (being example mutually with A phase, B here):
One. mode mutually is coupled
Suppose to send the input and output terminal (6 of signal at filter L1,4 or 6,5) input, through differential transformer B11 secondary coil → high pass capacitor C102 → coupling capacitor (CB1) → B phase → opposite end B phase → coupling capacitor CB2 → high pass capacitor C202 → transformer B21 secondary coil → capacitor C201 → coupling capacitor CA2 → A phase → return transmitting terminal A phase → again through coupling capacitor CA1 → capacitor C101 → transformer B11 secondary coil, constitute phase phase passage, and the input and output terminal of filter L2 (6 ', 4 ' or 6 ', 5 ') get final product received signal.
In like manner, if the input and output terminal of differential transformer (B21) (6 ', 4 ' or 6 ', 5 ') input sends signal, then through filter L2 → capacitor CB2 → B phase → opposite end B phase → coupling capacitor CB1 → filter L1 → coupling capacitor CA1 → A phase → opposite end A phase → coupling capacitor CA2 → filter L2, constitute phase phase passage, and get final product received signal at the input and output terminal (6,4 or 6,5) of filter L1.
In the above-described embodiments, if when the phase failure of A phase or ground connection, then by the transmission signal → transformer B11 secondary coil (2 of differential transformer B11 input, 1) → secondary coil of high pass capacitor C102 → coupling capacitor CB1 → B phase → opposite end B phase → coupling capacitance amount CB2 → high pass capacitor C202 → transformer B21 (1 ', 2 ') → transformer B22 secondary coil (7 ', 8 ') → secondary coil (8 of ground → impedance matching transformer B12,7) → secondary coil (2 of transformer B11,1), constitute passage mutually, and the input and output terminal of transformer B21 (6 ', 4 ' or 6 ', 5 ') but with regard to received signal; In like manner, during as if the phase failure of B phase or ground connection, above-mentioned phase phase passage then becomes passage mutually.
Two. phase ground coupled modes
If send signal in the input of the input and output terminal (11,9 or 11,10) of impedance matching transformer B12, then through the secondary coil (8,7) of transformer B12 →
B12 secondary coil (8 → 7) constitutes passage mutually, and is the binary channels transmission, thus when A mutually or B when the one phase phase failure or ground connection are arranged mutually, passage comes transmission signals with still having a phase.
In above-mentioned transmission course, owing to adopt differential transformer, and the centre cap of its secondary coil is connected on the head end of the secondary coil of impedance matching transformer, in addition, because above-mentioned transformer impedance matching, thereby can guarantee transformer B22(B12) go up the transmission signal of input or the transmission signals of reception, can not enter opposite end B21(B11) the primary winding side, vice versa.Therefore, can on two groups of input and output terminals of this compound filter, electric wave carrier and carrier current protection transceiver be installed simultaneously.
When adopting above-mentioned hybrid coupled mode transmission signals, on another phase (C phase), also can pass through the existing filter joint L of coupling capacitor C ' installations, with passage with constituting phase.
In sum, the utility model has the advantage of, adopt this wave filter to utilize the two-phase of power line can form phase phase passage with passage mutually and do not interfere with each other, thereby realize closing the phase common-use tunnel, solved the crowded problem of passage, met the carrier current protection transceiver and close mutually the also specification requirement of usefulness with electric wave carrier and can reduce investment outlay; In addition, because the phase passage that is made of this wave filter and power line is all-metal loop and when having to break down mutually, can be changed into again mutually passage, and this wave filter is binary channels with the phase ground passage that power line consists of, thereby can improve transmission quality and the reliability of the passage that is consisted of by this wave filter and power line, reduce long loss apart from hf channel, increase transmission range.
Claims (2)
1, a kind of carrier wave hf channel hybrid coupled filter that uses in the power-line carrier communication system that is applicable to, comprise an impedance matching transformer and two high pass filters, it is characterized in that, it also has a differential transformer (B1), the head end (7) of the secondary coil of said impedance matching transformer (B2) and the electric capacity (C01 of high pass filter, C02) a end (13 and 14) is connected on the centre cap (2) of secondary coil of differential transformer (B1) and the two ends (1 and 3) of secondary coil respectively, and the two ends (6 and 4 and 11 and 9) of the primary winding of said differential transformer (B1) and impedance matching transformer (B2) and tap (5 and 10) are the input and output terminal of this filter.
2, carrier wave hf channel hybrid coupled filter according to claim 1, it is characterized in that, first and second coil ratio of described differential transformer (B1) is 1.7-2.1, and first and second coil ratio of described impedance matching transformer (B2) is above-mentioned ratio
/ 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92202230 CN2115622U (en) | 1992-01-30 | 1992-01-30 | High frequency carrier channels mixed coupling filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92202230 CN2115622U (en) | 1992-01-30 | 1992-01-30 | High frequency carrier channels mixed coupling filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2115622U true CN2115622U (en) | 1992-09-09 |
Family
ID=4949123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92202230 Granted CN2115622U (en) | 1992-01-30 | 1992-01-30 | High frequency carrier channels mixed coupling filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2115622U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100521566C (en) * | 2004-03-23 | 2009-07-29 | 中国电力科学研究院 | Power line high speed data communication capacity broadband coupler of low voltage distributing network |
| CN110830084A (en) * | 2019-12-24 | 2020-02-21 | 上海虑信电力科技有限公司 | Phase coupling driving circuit of power line carrier communication system |
-
1992
- 1992-01-30 CN CN 92202230 patent/CN2115622U/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100521566C (en) * | 2004-03-23 | 2009-07-29 | 中国电力科学研究院 | Power line high speed data communication capacity broadband coupler of low voltage distributing network |
| CN110830084A (en) * | 2019-12-24 | 2020-02-21 | 上海虑信电力科技有限公司 | Phase coupling driving circuit of power line carrier communication system |
| CN110830084B (en) * | 2019-12-24 | 2021-06-22 | 上海虑信电力科技有限公司 | Phase coupling driving circuit of power line carrier communication system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |