CN110830084B - Phase coupling driving circuit of power line carrier communication system - Google Patents
Phase coupling driving circuit of power line carrier communication system Download PDFInfo
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- CN110830084B CN110830084B CN201911341373.4A CN201911341373A CN110830084B CN 110830084 B CN110830084 B CN 110830084B CN 201911341373 A CN201911341373 A CN 201911341373A CN 110830084 B CN110830084 B CN 110830084B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/56—Circuits for coupling, blocking, or by-passing of signals
Abstract
The invention provides a phase coupling driving circuit of a power line carrier communication system. The phase coupling driving circuit comprises two capacitive driving units and a high-frequency driving tuner, wherein one capacitive driving unit is connected between one phase line and the ground in series, and the other capacitive driving unit is connected between the other phase line and the ground in series; two output ends of the high-frequency driving tuner are respectively connected with central nodes of the two capacitive driving units; a high-frequency carrier signal is input from an input terminal of the high-frequency drive adapter. According to the invention, the two capacitive driving units are combined with the high-frequency driving tuner to form a phase-coupled driving circuit, so that the transmission consumption of high-frequency carrier signals is reduced, and the distance of power line carrier communication is increased.
Description
Technical Field
The invention relates to the technical field of power line carrier communication, in particular to a phase coupling driving circuit of a power line carrier communication system.
Background
At present, the existing carrier signal coupling applied to the carrier communication of the medium-voltage power line on the 10KV overhead line utilizes an integrated capacitive coupler device, and the integrated capacitive coupler device adopts a phase-ground coupling mode to realize the transmission of the medium-voltage carrier signal. The phase-ground coupling mode is a mode that a phase line is connected with the ground to form a communication loop, the ground is used as one signal contact, carrier signals are attenuated quickly, the ground can absorb the signals easily, and therefore the communication distance of the phase-ground coupling mode is short.
Disclosure of Invention
The invention aims to provide a phase coupling driving circuit of a power line carrier communication system, which is used for reducing the attenuation of carrier signals and improving the distance of power line carrier communication.
In order to achieve the purpose, the invention provides the following scheme:
a phase coupling driving circuit of a power line carrier communication system comprises two capacitive driving units and a high-frequency driving tuner;
one capacitive driving unit is connected between one phase line and the ground in series, and the other capacitive driving unit is connected between the other phase line and the ground in series;
two output ends of the high-frequency driving tuner are respectively connected with central nodes of the two capacitive driving units;
a high-frequency carrier signal is input from an input terminal of the high-frequency drive adapter.
Optionally, the capacitive driving unit includes: the high-frequency high-voltage coupling capacitor, the high-frequency inductor and the lightning arrester are arranged;
one end of the high-frequency high-voltage coupling capacitor, one end of the high-frequency inductor and one end of the lightning arrester are connected in a point-sharing mode to form the central node;
the other end of the high-frequency high-voltage coupling capacitor is connected with a phase line;
the other end of the high-frequency inductor and the other end of the lightning arrester are connected with the ground.
Optionally, the capacitance of the high-frequency high-voltage coupling capacitor is 5000 PF.
Optionally, the inductance of the high-frequency inductor is 182 uH.
Optionally, the ratio of the high-frequency driving adapter is 1: 3.
Optionally, the inductance of the input end of the high-frequency driving adapter is 5uH, and the inductance of the output end of the high-frequency driving adapter is 45 uH.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the invention provides a phase coupling driving circuit of a power line carrier communication system. The phase-coupled driving circuit comprises two capacitive driving units and a high-frequency driving tuner. One capacitive driving unit is connected between one phase line and the ground in series, and the other capacitive driving unit is connected between the other phase line and the ground in series; two output ends of the high-frequency driving tuner are respectively connected with central nodes of the two capacitive driving units; a high-frequency carrier signal is input from an input terminal of the high-frequency drive adapter. According to the invention, the two capacitive driving units are combined with the high-frequency driving tuner to form a phase-coupled driving circuit, so that the transmission consumption of high-frequency carrier signals is reduced, and the distance of power line carrier communication is increased.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
Fig. 1 is a circuit structure diagram of a phase-coupled driving circuit of a power line carrier communication system according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a phase coupling driving circuit of a power line carrier communication system, which is used for reducing the attenuation of carrier signals and improving the distance of power line carrier communication.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
In order to achieve the above object, the present invention provides a phase-coupled driving circuit of a power line carrier communication system, as shown in fig. 1, the phase-coupled driving circuit of a power line carrier communication system, the phase-coupled driving circuit includes two capacitive driving units and a high-frequency driving tuner T1; one capacitive driving unit is connected between one phase line and the ground in series, and the other capacitive driving unit is connected between the other phase line and the ground in series; two output ends of the high-frequency driving tuner T1 are respectively connected with central nodes of the two capacitive driving units; a high-frequency carrier signal is input from an input terminal of the high-frequency drive adaptor T1.
The capacitive driving unit includes: the high-frequency high-voltage coupling capacitor, the high-frequency inductor and the lightning arrester are arranged; one end of the high-frequency high-voltage coupling capacitor, one end of the high-frequency inductor and one end of the lightning arrester are connected in a concurrent mode to form the central node; the other end of the high-frequency high-voltage coupling capacitor is connected with a phase line; the other end of the high-frequency inductor and the other end of the lightning arrester are connected with the ground.
Specifically, as shown IN fig. 1, carrier signal input terminals IN _1 and IN _2 are connected to an input terminal of the high-frequency driving adapter T1, and a high-frequency carrier signal is input from an input terminal of the high-frequency driving adapter T1 through the carrier signal input terminal. The output end of the high-frequency driving adjustment T1 is connected with two capacitive driving units; the high-frequency inductor L1 is connected with the lightning arrester D1 in parallel, one end of the high-frequency inductor is connected with the high-voltage high-frequency coupling capacitor C1, the other end of the high-frequency inductor is connected with the ground, and the L1, the D1 and the C1 form a capacitive driving unit; the high-frequency inductor L2 is connected with the lightning arrester D2 in parallel, one end of the high-frequency inductor is connected with the high-voltage high-frequency coupling capacitor C2, the other end of the high-frequency inductor is connected with the ground, and the L2, the D2 and the C2 form another capacitive driving unit; 1, two phase line interfaces OUT _ a and OUT _ B are respectively connected with two high-voltage high-frequency coupling capacitors C1 and C2.
As a specific implementation manner, the power line carrier communication system of the present invention may be applied to a 10KV high voltage to form a 10KV phase-coupled capacitive driving circuit, and the technical parameters of each component of the 10KV phase-coupled capacitive driving circuit are shown in table 1, but are not limited to the parameters defined in table 1.
TABLE 1 technical parameters of the components
As shown in table 1, the capacitance of the high-voltage high-frequency coupling capacitors C1 and C2 was 5000 PF. The inductance of the high-frequency inductors L1 and L2 is 182 uH. The proportion of the high-frequency driving tuner T1 is 1:3, the input end is 1, and the inductance value is 5 uH; the output is 3 and the inductance is 45 uH.
According to the invention, the two capacitive driving units are combined with the high-frequency driving tuner, and the tuning is carried out according to the ratio of 1 to 3 of inductance input and output, so that the transmission consumption of high-frequency carrier signals is ensured to be less than 1dB, and the capacitive driving circuit is applied to the high-frequency carrier communication of 1MHz to 30MHz in a coupling design, so that the communication distance is increased.
The equivalent embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts between the equivalent embodiments can be referred to each other.
The principle and the implementation manner of the present invention are explained by applying specific examples, the above description of the embodiments is only used to help understanding the method of the present invention and the core idea thereof, the described embodiments are only a part of the embodiments of the present invention, not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the protection scope of the present invention.
Claims (2)
1. A phase coupling driving circuit of a power line carrier communication system is characterized by comprising two capacitive driving units and a high-frequency driving tuner;
one capacitive driving unit is connected between one phase line and the ground in series, and the other capacitive driving unit is connected between the other phase line and the ground in series;
two output ends of the high-frequency driving tuner are respectively connected with central nodes of the two capacitive driving units;
a high-frequency carrier signal is input from an input end of the high-frequency driving adapter;
the capacitance of a high-frequency high-voltage coupling capacitor of the capacitive driving unit is 5000PF, the inductance of a high-frequency inductor of the capacitive driving unit is 182uH, the ratio of the high-frequency driving adapter is 1:3, the inductance of the input end of the high-frequency driving adapter is 5uH, and the inductance of the output end of the high-frequency driving adapter is 45 uH.
2. The phase-coupled driving circuit of a power line carrier communication system according to claim 1, wherein the capacitive driving unit includes: the high-frequency high-voltage coupling capacitor, the high-frequency inductor and the lightning arrester are arranged;
one end of the high-frequency high-voltage coupling capacitor, one end of the high-frequency inductor and one end of the lightning arrester are connected in a point-sharing mode to form the central node;
the other end of the high-frequency high-voltage coupling capacitor is connected with a phase line;
the other end of the high-frequency inductor and the other end of the lightning arrester are connected with the ground.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911341373.4A CN110830084B (en) | 2019-12-24 | 2019-12-24 | Phase coupling driving circuit of power line carrier communication system |
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| CN201911341373.4A CN110830084B (en) | 2019-12-24 | 2019-12-24 | Phase coupling driving circuit of power line carrier communication system |
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| CN110830084A CN110830084A (en) | 2020-02-21 |
| CN110830084B true CN110830084B (en) | 2021-06-22 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2115622U (en) * | 1992-01-30 | 1992-09-09 | 赵家源 | High frequency carrier channels mixed coupling filter |
| CN1312621A (en) * | 2001-04-26 | 2001-09-12 | 北京四方华能电网控制系统有限公司 | Integral power distribution power line carrier equipment |
| CN1976245A (en) * | 2006-12-07 | 2007-06-06 | 赵湖滨 | Capacity coupler used for intermediate voltage power line carrier communication |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7170395B2 (en) * | 2001-10-02 | 2007-01-30 | Telkonet Communications, Inc. | Method and apparatus for attaching power line communications to customer premises |
| CN102223160B (en) * | 2011-06-21 | 2013-08-14 | 深圳市智联信通科技有限公司 | Power line carrier communication transmitting circuit |
| US9030302B2 (en) * | 2012-02-16 | 2015-05-12 | Enphase Energy, Inc. | Method and apparatus for three-phase power line communications |
| CN103036595B (en) * | 2012-12-07 | 2015-07-08 | 泉州泽仕通科技有限公司 | Field intensity covering method and device based on power line transmission |
-
2019
- 2019-12-24 CN CN201911341373.4A patent/CN110830084B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2115622U (en) * | 1992-01-30 | 1992-09-09 | 赵家源 | High frequency carrier channels mixed coupling filter |
| CN1312621A (en) * | 2001-04-26 | 2001-09-12 | 北京四方华能电网控制系统有限公司 | Integral power distribution power line carrier equipment |
| CN1976245A (en) * | 2006-12-07 | 2007-06-06 | 赵湖滨 | Capacity coupler used for intermediate voltage power line carrier communication |
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