CN104184493A - System for ensuring electric power line communication during breakdown or maintenance state of electric power circuit - Google Patents
System for ensuring electric power line communication during breakdown or maintenance state of electric power circuit Download PDFInfo
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- CN104184493A CN104184493A CN201410396561.8A CN201410396561A CN104184493A CN 104184493 A CN104184493 A CN 104184493A CN 201410396561 A CN201410396561 A CN 201410396561A CN 104184493 A CN104184493 A CN 104184493A
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Abstract
The invention relates to a system for ensuring electric power line communication during a breakdown or maintenance state of an electric power circuit. The system comprises a control terminal, a transmission interface, a data processing module, a signal sending device and a signal receiving device, and is characterized in that a first electric power carrier sampling module is coupled to a 35kV circuit through a three-phase coupling capacitor; a C-phase is adopted to act as a virtual center line; a signal sending and transmitting circuit adopts an A-phase and a B-phase, three high-frequency coupling capacitors are required to be installed at each signal point, and a C-phase high-frequency coupling capacitor is grounded to act as a virtual center point. The system provided by the invention can ensure normal communication during the breakdown or maintenance state of the electric power circuit.
Description
Technical field
The present invention relates to acquisition technique, the communication technology of power-line carrier communication, signal etc., refer to especially and utilize original power line, pass through relevant device, the in the situation that of not rewiring, when power circuit breaks down and during inspecting state, still can ensure the broadband power line communication technology on circuit.
Background technology
At Chinese power-line broadband communication technology (BPL), more and more paid attention at present, provide services on the Internet fast and at a low price to user, particularly remote districts, are undoubtedly a kind of good selection.And current power line communication technology, communication support way to circuit when fault and the inspecting state does not have too much further investigation, and medium voltage electricity circuit is generally in more remote area, circuit is easily because the impact of various natural environments causes fault, power department also needs regular circuit is overhauled, therefore research ensures the way of power line communication when maintenance or malfunction appear in circuit, and the communication system of shifting onto out by a series of experimental study can be widely used in the field of medium and high voltage power line mixing broadband connections.This achievement, to innovate existing broadband power line communication theory, change current technology status, instruct design and the manufacture of power line communication product, the achievement in research of this project is by breaking through the bottleneck of prior art, for a new direction is started in the development of broadband power line communication technology.Can change and deepen people's understanding new to power line carrier communication simultaneously.The application that developing makes new advances.Yet prior art is absorbed in the problem that solves broadband power line communication, their main purpose is to solve circuit noise, channel impedance, signal attenuation, signal wave arrestment in power line communication, the technical problems such as working power of lightning protection measures, outdoor equipment.For power circuit, in maintenance and communication guarantee method during malfunction, do not solve.
Summary of the invention
The object of this invention is to provide a kind of power circuit and when fault and inspecting state, ensure the system of power line communication, can guarantee also can proper communication under feeder line fault or inspecting state.
The present invention adopts following scheme to realize: a kind of power circuit ensures the system of power line communication when fault and inspecting state, comprises control terminal, coffret, data processing module, sender unit and signal receiving device; Described control terminal is connected with described data processing module through coffret; Described sender unit comprises the first power modulation module, power carrier sending module and the first power carrier sampling module connecting successively; The described input of power modulation module and the output of described data processing module are connected; Described signal receiving device comprises the second electric power demodulation module, the second power carrier sampling module and the antenna reception module connecting successively; The described output of electric power demodulation module and the input of described data processing module are connected; It is characterized in that: described the first power carrier sampling module is to 35kV circuit by coupling capacitor-coupled; Wherein adopt C as imaginary center line; Signal sends transmission loop and adopts A-B phase, and each signaling point need to be installed three carrier coupling capacitors, and wherein C phase carrier coupling capacitor ground connection is as virtual center point.
In an embodiment of the present invention, described three carrier coupling capacitors comprise the first carrier coupling capacitor, the second carrier coupling capacitor and third high coupling capacitor frequently; The A of the first described power carrier sampling module samples mutually end and through the first coupling capacitance, is connected to the A phase of 35kV cable; The B of the first power carrier sampling module samples mutually end and through the second coupling capacitance, is connected to the B phase of 35kV cable; The C of the first power carrier sampling module samples end ground connection mutually, and through third high frequency coupling capacitance, is connected to the C phase of 35kV cable.
In an embodiment of the present invention, described data processing module is as follows to the treatment step of Signal Message Address when sending data:
Receive after the packet of self terminal, first judge whether default addresses for use of this packet, if default addresses for use, save data bag or return to this packet;
If this packet contains address, judge whether this address is the machine address, if so, processing data packets preparation are transmitted.
In an embodiment of the present invention, data processing module is as follows to the treatment step of Signal Message Address when receiving data:
Receive after the wired or wireless carrier signal from power line, first judge whether the address in packet is the machine address, if not, packet discard;
If the address in packet is the machine address, is decrypted processing, and sends terminal to.
In an embodiment of the present invention, described control terminal comprises computer, laptop computer or panel computer.
Hardware device of the present invention is simple, because existing power line failure or maintenance are all generally that to separate wire jumper disconnected, physical cord can not break, therefore, the present invention relies on existing hardware circuit, by changing the access way of coupling capacitance, can realizing, can guarantee also can proper communication under feeder line fault or inspecting state.
Accompanying drawing explanation
Fig. 1 is system principle diagram of the present invention.
Fig. 2 is three carrier coupling capacitor circuit connection diagrams of the present invention.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can more be become apparent, below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
Set forth detail in the following description so that fully understand the present invention.But the present invention can be different from alternate manner described here and implements with multiple, and those skilled in the art can do similar popularization without prejudice to intension of the present invention in the situation that.Therefore the present invention is not subject to the restriction of following public embodiment.
Refer to Fig. 1, the present embodiment provides a kind of power circuit when fault and inspecting state, to ensure the system of power line communication, comprises control terminal, coffret, data processing module, sender unit and signal receiving device; Described control terminal is connected with described data processing module through coffret; Described sender unit comprises the first power modulation module, power carrier sending module and the first power carrier sampling module connecting successively; The described input of power modulation module and the output of described data processing module are connected; Described signal receiving device comprises the second electric power demodulation module, the second power carrier sampling module and the antenna reception module connecting successively; The described output of electric power demodulation module and the input of described data processing module are connected; It is characterized in that: described the first power carrier sampling module is to 35kV circuit by coupling capacitor-coupled; Wherein adopt C as imaginary center line; Signal sends transmission loop and adopts A-B phase, and each signaling point need to be installed three carrier coupling capacitors, and wherein C phase carrier coupling capacitor ground connection is as virtual center point.
Concrete, referring to Fig. 2, in figure, described three carrier coupling capacitors comprise the first carrier coupling capacitor, the second carrier coupling capacitor and third high coupling capacitor frequently; The A of the first described power carrier sampling module samples mutually end and through the first coupling capacitance, is connected to the A phase of 35kV cable; The B of the first power carrier sampling module samples mutually end and through the second coupling capacitance, is connected to the B phase of 35kV cable; The C of the first power carrier sampling module samples end ground connection mutually, and through third high frequency coupling capacitance, is connected to the C phase of 35kV cable.
Preferably, the terminal described in the present invention can be that computer can be also panel computer, and wherein said data processing module is as follows to the treatment step of Signal Message Address when sending data:
Receive after the packet of self terminal, first judge whether default addresses for use of this packet, if default addresses for use, save data bag or return to this packet;
If this packet contains address, judge whether this address is the machine address, if so, processing data packets preparation are transmitted.
Described data processing module is as follows to the treatment step of Signal Message Address when receiving data:
Receive after the wireless carrier signal from power line, first judge whether the address in packet is the machine address, if not, packet discard;
If the address in packet is the machine address, is decrypted processing, and sends terminal to.
The present invention changes the drawback that conventional electric power carrier communication adopts sending and receiving homophase, utilize three-phase high-frequency coupling to realize transfer of data, adopt A to send mutually data, B Phase Receiver data, C phase ground connection, at utmost guarantee that power circuit ensures power line communication when fault and inspecting state.
Although the present invention with preferred embodiment openly as above; but it is not for limiting the present invention; any those skilled in the art without departing from the spirit and scope of the present invention; can utilize method and the technology contents of above-mentioned announcement to make possible change and modification to technical solution of the present invention; therefore; every content that does not depart from technical solution of the present invention; any simple modification, equivalent variations and the modification above embodiment done according to technical spirit of the present invention, all belong to the protection range of technical solution of the present invention.The foregoing is only preferred embodiment of the present invention, all equalizations of doing according to the present patent application the scope of the claims change and modify, and all should belong to covering scope of the present invention.
Claims (5)
1. power circuit ensures a system for power line communication when fault and inspecting state, comprises control terminal, coffret, data processing module, sender unit and signal receiving device; Described control terminal is connected with described data processing module through coffret; Described sender unit comprises the first power modulation module, power carrier sending module and the first power carrier sampling module connecting successively; The described input of power modulation module and the output of described data processing module are connected; Described signal receiving device comprises the second electric power demodulation module, the second power carrier sampling module and the antenna reception module connecting successively; The described output of electric power demodulation module and the input of described data processing module are connected; It is characterized in that: described the first power carrier sampling module is to 35kV circuit by coupling capacitor-coupled; Wherein adopt C as imaginary center line; Signal sends transmission loop and adopts A-B phase, and each signaling point need to be installed three carrier coupling capacitors, and wherein C phase carrier coupling capacitor ground connection is as virtual center point.
2. power circuit according to claim 1 ensures the system of power line communication when fault and inspecting state, it is characterized in that: described three carrier coupling capacitors comprise the first carrier coupling capacitor, the second carrier coupling capacitor and third high coupling capacitor frequently; The A of the first described power carrier sampling module samples mutually end and through the first coupling capacitance, is connected to the A phase of 35kV cable; The B of the first power carrier sampling module samples mutually end and through the second coupling capacitance, is connected to the B phase of 35kV cable; The C of the first power carrier sampling module samples end ground connection mutually, and through third high frequency coupling capacitance, is connected to the C phase of 35kV cable.
3. power circuit according to claim 1 ensures the system of power line communication when fault and inspecting state, it is characterized in that: described data processing module is as follows to the treatment step of Signal Message Address when sending data:
Receive after the packet of self terminal, first judge whether default addresses for use of this packet, if default addresses for use, save data bag or return to this packet; If this packet contains address, judge whether this address is the machine address, if so, processing data packets preparation are transmitted.
4. according to the power circuit described in claim 1, ensure the system of power line communication when fault and the inspecting state, it is characterized in that: data processing module is as follows to the treatment step of Signal Message Address when receiving data:
Receive after the wired or wireless carrier wave mixed signal from power line, first judge whether the address in packet is the machine address, if not, packet discard; If the address in packet is the machine address, is decrypted processing, and sends terminal to.
5. power circuit according to claim 1 ensures the system of power line communication when fault and inspecting state, it is characterized in that: described control terminal comprises computer, laptop computer or panel computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410396561.8A CN104184493A (en) | 2014-08-13 | 2014-08-13 | System for ensuring electric power line communication during breakdown or maintenance state of electric power circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410396561.8A CN104184493A (en) | 2014-08-13 | 2014-08-13 | System for ensuring electric power line communication during breakdown or maintenance state of electric power circuit |
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| CN104184493A true CN104184493A (en) | 2014-12-03 |
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| CN201410396561.8A Pending CN104184493A (en) | 2014-08-13 | 2014-08-13 | System for ensuring electric power line communication during breakdown or maintenance state of electric power circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107404335A (en) * | 2017-07-25 | 2017-11-28 | 国网福建省电力有限公司 | A kind of method that power circuit ensures power line communication in failure and inspecting state |
| CN109067430A (en) * | 2018-06-07 | 2018-12-21 | 国家电网公司 | Guangdong power system tracks communication system |
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| CN85109644A (en) * | 1984-10-22 | 1986-07-30 | 西屋电气公司 | On three-phase power line, realize the device of carrier communication |
| CN101277130A (en) * | 2007-03-29 | 2008-10-01 | 雅马哈株式会社 | Coupling circuit and network device for power line communication |
| CN102142864A (en) * | 2011-04-11 | 2011-08-03 | 福建省电力有限公司宁德电业局 | Broadband communication device for long-distance high-speed power line |
| CN201976101U (en) * | 2011-04-11 | 2011-09-14 | 福建省电力有限公司宁德电业局 | Long-distance high speed power line wide-band communication device |
| US8743974B2 (en) * | 2011-08-29 | 2014-06-03 | Texas Instruments Incorporated | Adaptive modulation and coding with frame size adjustment for power line communications (PLC) |
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2014
- 2014-08-13 CN CN201410396561.8A patent/CN104184493A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85109644A (en) * | 1984-10-22 | 1986-07-30 | 西屋电气公司 | On three-phase power line, realize the device of carrier communication |
| CN101277130A (en) * | 2007-03-29 | 2008-10-01 | 雅马哈株式会社 | Coupling circuit and network device for power line communication |
| CN102142864A (en) * | 2011-04-11 | 2011-08-03 | 福建省电力有限公司宁德电业局 | Broadband communication device for long-distance high-speed power line |
| CN201976101U (en) * | 2011-04-11 | 2011-09-14 | 福建省电力有限公司宁德电业局 | Long-distance high speed power line wide-band communication device |
| US8743974B2 (en) * | 2011-08-29 | 2014-06-03 | Texas Instruments Incorporated | Adaptive modulation and coding with frame size adjustment for power line communications (PLC) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107404335A (en) * | 2017-07-25 | 2017-11-28 | 国网福建省电力有限公司 | A kind of method that power circuit ensures power line communication in failure and inspecting state |
| CN107404335B (en) * | 2017-07-25 | 2020-12-04 | 国网福建省电力有限公司 | Method for guaranteeing power line communication in fault and maintenance states of power line |
| CN109067430A (en) * | 2018-06-07 | 2018-12-21 | 国家电网公司 | Guangdong power system tracks communication system |
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| CB02 | Change of applicant information |
Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Applicant after: State Grid Corporation of China Applicant after: State Grid Fujian Electric Power Co., Ltd. Applicant after: NINGDE POWER SUPPLY COMPANY, STATE GRID FUJIAN ELECTRIC POWER CO., LTD. Applicant after: Fujian billion Kun communications Limited by Share Ltd Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Applicant before: State Grid Corporation of China Applicant before: State Grid Fujian Electric Power Co., Ltd. Applicant before: NINGDE POWER SUPPLY COMPANY, STATE GRID FUJIAN ELECTRIC POWER CO., LTD. Applicant before: Fujian Great Power PLC Equipment Co., Ltd. |
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Application publication date: 20141203 |