CN111817753A - Zero-insertion-loss medium-voltage coupling device - Google Patents
Zero-insertion-loss medium-voltage coupling device Download PDFInfo
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- CN111817753A CN111817753A CN202010632262.5A CN202010632262A CN111817753A CN 111817753 A CN111817753 A CN 111817753A CN 202010632262 A CN202010632262 A CN 202010632262A CN 111817753 A CN111817753 A CN 111817753A
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- circuit module
- signal
- coupling device
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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
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- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
The invention discloses a zero-insertion-loss medium-voltage coupling device, which comprises a signal receiving module, a frequency detection circuit module, a calculation circuit module, a self-adaptive inductance matching circuit module, a signal sending circuit module and a power circuit module, wherein the device can self-detect the signal frequency after receiving a medium-voltage carrier signal, and adjust the resonance inductance value for carrying out resonance by matching with a coupling device in real time according to the frequency, so that the medium-voltage carrier signal reaches a resonance point, and further reaches zero insertion loss, the medium-voltage carrier signal is ensured not to be attenuated after passing through the coupling device, and can play an amplification role in the medium-voltage carrier signal, and the medium-voltage communication capability is further improved.
Description
Technical Field
The invention belongs to the field of power line carriers, and particularly relates to a zero-insertion-loss medium-voltage coupling device.
Background
The power line carrier technology is widely applied to low-voltage 380V/220V, medium-voltage 10kV and high-voltage 35kV lines at present, but due to the complex 10kV distribution network line and the limitations of construction, location and the like, the distribution network station cannot realize wireless and optical fiber full coverage. The medium-voltage power line carrier technology is a good extension for places where optical fibers cannot be laid and wireless coverage cannot be achieved, and the problem of communication of positions where information of distribution network points cannot be covered can be solved. The medium-voltage carrier coupling device is an important component of 10kV power line communication, and the performance and reliability of the medium-voltage carrier coupling device determine the overall effect of medium-voltage power line carrier communication. At present, medium-voltage carrier wave couplers existing at home and abroad have great signal attenuation influence on medium-voltage carrier wave signals, so that the medium-voltage carrier wave communication effect is not ideal. And the construction and installation are complex and troublesome, so that the medium-voltage carrier communication in the later period is poor and the maintenance is inconvenient.
The existing coupling device applied to a 10kV cable line is basically a capacitive coupling device, internal devices have loss on medium-voltage carrier signals, and serious insertion loss of the signals can also occur due to other conditions such as impedance noise and the like, so that the signal strength of communication between medium-voltage carriers is greatly reduced, and communication failure is caused due to weak signals received by medium-voltage carrier equipment after the medium-voltage carrier signals pass through the coupling device.
Disclosure of Invention
In view of the above-mentioned shortcomings or drawbacks of the prior art, an object of the present invention is to provide a medium voltage coupling device with zero insertion loss, which can reduce the medium voltage carrier signal loss to 0db, and even gain the medium voltage carrier signal with a certain amplitude, so as to ensure that the medium voltage carrier communication signal is transmitted from the high voltage terminal of 10kV to the low voltage medium voltage communication device to the maximum extent.
The technical scheme of the invention is as follows: the utility model provides a zero-insertion-loss medium voltage coupling device contains signal receiving module, frequency detection circuit module, calculation circuit module, self-adaptation inductance matching circuit module, signal transmission circuit module, power supply circuit module, wherein:
the signal receiving circuit module receives a medium-voltage carrier signal from a 10kV signal line or a medium-voltage carrier signal transceiving device;
the frequency detection circuit module is used for carrying out frequency detection on the received medium-voltage carrier signal;
the calculating circuit module is used for calculating the resonance inductance value which is matched with the medium-voltage coupling device to resonate according to the detected frequency;
the self-adaptive inductance matching circuit module performs resonance processing on the medium-voltage carrier wave signal according to the calculated resonance inductance value, so that the medium-voltage carrier wave signal reaches a resonance point, and guarantees that the medium-voltage carrier wave signal is output to the low-voltage side medium-voltage carrier wave device without loss.
The signal sending circuit module is used for sending the processed medium-voltage carrier signal to a low-voltage side medium-voltage carrier device;
and the power supply module supplies power to the medium-voltage coupling device.
The resonance inductance is according to the formula
Deducing
And (4) calculating.
When the medium-voltage carrier signal reaches a resonance point, the medium-voltage carrier signal is put to the maximum, so that the signal loss is reduced to the minimum, and the medium-voltage carrier signal is ensured not to be attenuated after passing through the coupling device.
The invention has the beneficial effects that: the medium-voltage coupling device with zero insertion loss is provided, and has the advantages that the received medium-voltage carrier signal is amplified, the medium-voltage carrier signal loss is reduced, the medium-voltage carrier signal is output to the maximum extent, the signal attenuation is avoided, and the medium-voltage communication capacity is improved.
Drawings
Fig. 1 is a structural diagram of a zero-insertion loss medium-voltage coupling device according to the present invention.
Fig. 2 is a working block diagram of a zero-insertion-loss medium-voltage coupling device according to the present invention.
Detailed Description
The invention is further described in detail below with reference to the accompanying drawings and examples.
As shown in fig. 1, a zero-insertion loss medium voltage coupling device of the present invention comprises the following components:
the signal receiving circuit module is used for receiving a medium-voltage carrier signal from a 10kV signal line or a medium-voltage carrier signal transceiving device;
the frequency detection circuit module is used for carrying out frequency detection on the received medium-voltage carrier signal;
the calculating circuit module is used for calculating the resonance inductance value which is matched with the medium-voltage coupling device to resonate according to the detected frequency;
and the self-adaptive inductance matching circuit module is used for carrying out resonance processing on the medium-voltage carrier wave signal according to the resonance inductance value obtained by calculation, so that the medium-voltage carrier wave signal reaches a resonance point, and the medium-voltage carrier wave signal is output to the low-voltage side medium-voltage carrier wave device without loss to provide guarantee.
The signal sending circuit module is used for sending the processed medium-voltage carrier signal to a low-voltage side medium-voltage carrier device;
and the power supply module is used for supplying power to the medium-voltage coupling device.
As shown in fig. 2, a signal receiving circuit module in a medium-voltage coupling device 1 with zero insertion loss receives a medium-voltage carrier signal sent by a medium-voltage carrier signal transceiver, a frequency detection circuit module detects the received medium-voltage carrier signal in real time, a resonance inductance value is matched by a calculation circuit module, an adaptive inductance matching circuit module resonates the medium-voltage carrier signal according to the calculated resonance inductance value, the medium-voltage carrier signal is transmitted to the medium-voltage coupling device 2 along a 10kV high-voltage line by a signal sending circuit after reaching a resonance point, and the medium-voltage carrier signal is transmitted to the medium-voltage carrier signal transceiver 2 after being processed by the medium-voltage coupling device 2 as the medium-voltage coupling device 1.
Claims (3)
1. The utility model provides a zero-insertion-loss medium-voltage coupling device, its characterized in that contains signal receiving circuit module, frequency detection circuit module, calculating circuit module, self-adaptation inductance matching circuit module, signal transmission circuit module, power supply circuit module, wherein:
the signal receiving circuit module receives a medium-voltage carrier signal from a 10kV signal line or a medium-voltage carrier signal transceiving device;
the frequency detection circuit module is used for carrying out frequency detection on the received medium-voltage carrier signal;
the calculating circuit module is used for calculating the resonance inductance value which is matched with the medium-voltage coupling device to resonate according to the detected frequency;
the self-adaptive inductance matching circuit module is used for carrying out resonance processing on the medium-voltage carrier wave signal according to the resonance inductance value obtained by calculation, so that the medium-voltage carrier wave signal reaches a resonance point, and the medium-voltage carrier wave signal is output to the low-voltage side medium-voltage carrier wave device without loss to provide guarantee;
the signal sending circuit module is used for sending the processed medium-voltage carrier signal to a low-voltage side medium-voltage carrier device;
and the power supply module supplies power to the medium-voltage coupling device.
2. The zero-insertion-loss medium-voltage coupling device as claimed in claim 1, wherein the resonance inductance is in accordance with the formula
Deducing
And (4) calculating.
3. The medium voltage coupling device of claim 1, wherein the medium voltage carrier signal is maximized when the medium voltage carrier signal reaches the resonance point, thereby minimizing signal loss and ensuring that the medium voltage carrier signal does not attenuate after passing through the coupling device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010632262.5A CN111817753A (en) | 2020-07-03 | 2020-07-03 | Zero-insertion-loss medium-voltage coupling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010632262.5A CN111817753A (en) | 2020-07-03 | 2020-07-03 | Zero-insertion-loss medium-voltage coupling device |
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| CN111817753A true CN111817753A (en) | 2020-10-23 |
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| CN202010632262.5A Pending CN111817753A (en) | 2020-07-03 | 2020-07-03 | Zero-insertion-loss medium-voltage coupling device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112994751A (en) * | 2021-02-03 | 2021-06-18 | 青岛鼎信通讯股份有限公司 | Broadband coupling device |
| CN113676222A (en) * | 2021-01-26 | 2021-11-19 | 青岛鼎信通讯股份有限公司 | Fusion scheme coupler for medium-voltage carrier communication |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150318583A1 (en) * | 2012-01-31 | 2015-11-05 | Renault S.A.S. | Communication system in an electric battery |
| CN110022167A (en) * | 2017-12-28 | 2019-07-16 | 太阳能安吉科技有限公司 | Variable impedance circuit |
-
2020
- 2020-07-03 CN CN202010632262.5A patent/CN111817753A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150318583A1 (en) * | 2012-01-31 | 2015-11-05 | Renault S.A.S. | Communication system in an electric battery |
| CN110022167A (en) * | 2017-12-28 | 2019-07-16 | 太阳能安吉科技有限公司 | Variable impedance circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113676222A (en) * | 2021-01-26 | 2021-11-19 | 青岛鼎信通讯股份有限公司 | Fusion scheme coupler for medium-voltage carrier communication |
| CN112994751A (en) * | 2021-02-03 | 2021-06-18 | 青岛鼎信通讯股份有限公司 | Broadband coupling device |
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Application publication date: 20201023 |