CN210518843U - Power distribution terminal communication system and power distribution network communication system based on LoRa - Google Patents
Power distribution terminal communication system and power distribution network communication system based on LoRa Download PDFInfo
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- CN210518843U CN210518843U CN201921676409.XU CN201921676409U CN210518843U CN 210518843 U CN210518843 U CN 210518843U CN 201921676409 U CN201921676409 U CN 201921676409U CN 210518843 U CN210518843 U CN 210518843U
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Abstract
The application relates to a distribution terminal communication system and a distribution network communication system based on LoRa. The power distribution terminal communication system comprises a communication terminal and a communication base station; the communication terminal comprises a data information transmission port, a first LoRa communication module and a first antenna which are connected in sequence; the communication base station comprises a second antenna, a second LoRa communication module and a mobile communication module which are connected in sequence. Communication transmission is carried out between communication terminal and the communication base station by adopting LoRa, signal coverage radius of kilometer grade can be achieved, signal penetration capacity far exceeds wireless communication devices such as DTU/RTU, and signal coverage and transmission capacity are effectively improved. Data transmission is carried out between the communication base station and the power distribution network master station through a mobile communication network, and data information of the power distribution network automatic control terminal collected by the communication base station can be stably and reliably transmitted to the power distribution network master station. Based on above-mentioned structure, communication signal penetrability is strong, effectively solves distribution network automation control terminal communication signal poor or no signal scheduling problem.
Description
Technical Field
The application relates to the technical field of power distribution, in particular to a power distribution terminal communication system and a power distribution network communication system based on LoRa.
Background
A communication system of the distribution network automation system is accessed to a wireless public network for communication and data transmission. However, the wireless public network has many users, which cannot ensure that each communication link is independent and not interfered by other users, the communication safety cannot be effectively guaranteed, and the network quality is not controlled.
In the implementation process, the inventor finds that at least the following problems exist in the conventional technology: distribution network automation control terminal's mounting point distributes extensively, and the position is located communication signal such as open-air, underground garage weak or no signal environment completely, leads to distribution network automation control terminal can't with join in marriage net main website stable communication.
SUMMERY OF THE UTILITY MODEL
Therefore, it is necessary to provide a power distribution terminal communication system and a power distribution network communication system based on LoRa to solve the problem that the power distribution network automatic control terminal cannot stably communicate with the master station.
In order to achieve the above object, in one aspect, an embodiment of the present application provides a power distribution terminal communication system based on LoRa, including a communication terminal and a communication base station.
The communication terminal includes:
and the data information transmission port is used for connecting the distribution network automatic control terminal.
A first LoRa communication module; the first data port of the first LoRa communication module is connected with the data information transmission port.
And the first antenna is connected with the second data port of the first LoRa communication module.
The communication base station comprises:
and the second antenna is used for being in communication connection with the first antenna.
A second LoRa communication module; and a first data port of the second LoRa communication module is connected with the second antenna.
The mobile communication module is connected with a second data port of the second LoRa communication module; the mobile communication module is used for being in communication connection with the power distribution network main station through a mobile network.
In one embodiment, the first LoRa communication module is a spread spectrum modulation communication module; the second LoRa communication module is a spread spectrum modulation communication module.
In one embodiment, the first LoRa communication module is a cyclic interleaving error correction coding communication module; the second LoRa communication module is a cyclic interleaving error correction coding communication module.
In one embodiment, the communication terminal further comprises a first power module; the input end of the first power supply module is used for being connected with a power port of the distribution network automation control terminal, and the output end of the first power supply module is connected with the first LoRa communication module.
In one embodiment, the communication base station further comprises a second power module; the second power module is connected with the second LoRa communication module and the mobile communication module respectively.
In one embodiment, the second power module comprises a solar unit and a battery; the input end of battery is connected solar energy unit, and the output of battery is connected second loRa communication module and mobile communication module respectively.
In one embodiment, the data information transmission port is a wired connection port.
In one embodiment, the mobile communication module is a 4G module.
On the other hand, the embodiment of the present application further provides a power distribution network communication system, including:
distribution network automation control terminal.
The power distribution terminal communication system based on the LoRa is described above.
And the power distribution terminal communication system is connected with the power distribution network automatic control terminal.
In one embodiment, the power distribution network communication system further comprises a power distribution network master station; and the power distribution terminal communication system is in communication connection with the power distribution network master station.
One of the above technical solutions has the following advantages and beneficial effects:
the power distribution terminal communication system comprises a communication terminal and a communication base station; the communication terminal comprises a data information transmission port, a first LoRa communication module and a first antenna which are connected in sequence; the communication base station comprises a second antenna, a second LoRa communication module and a mobile communication module which are connected in sequence. The data information transmission port is used for connecting the distribution network automatic control terminal and acquiring data information of the distribution network automatic control terminal; communication transmission is carried out between communication terminal and the communication base station by adopting LoRa, signal coverage radius of kilometer grade can be achieved, signal penetration capacity far exceeds wireless communication devices such as DTU/RTU, and signal coverage and transmission capacity are effectively improved. Data transmission is carried out between the communication base station and the power distribution network master station through a mobile communication network, and data information of the power distribution network automatic control terminal collected by the communication base station can be stably and reliably transmitted to the power distribution network master station. Based on above-mentioned structure, communication signal penetrability is strong, effectively solves distribution network automation control terminal communication signal poor or no signal scheduling problem.
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The foregoing and other objects, features and advantages of the application will be apparent from the following more particular description of preferred embodiments of the application, as illustrated in the accompanying drawings. Like reference numerals refer to like parts throughout the drawings, and the drawings are not intended to be drawn to scale in actual dimensions, emphasis instead being placed upon illustrating the subject matter of the present application.
FIG. 1 is a first schematic block diagram of a LoRa-based power distribution terminal communication system in one embodiment;
FIG. 2 is a second schematic block diagram of a LoRa-based power distribution terminal communication system in one embodiment;
FIG. 3 is a third schematic block diagram of a LoRa-based power distribution terminal communication system in one embodiment;
fig. 4 is a schematic structural diagram of a power distribution network communication system in one embodiment.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are shown in the drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element and be integral therewith, or intervening elements may also be present. The terms "first data port", "second data port", "input", "output", and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In a power distribution network, if a power distribution network master station cannot master the operation condition of a power distribution network automatic control terminal in real time, the operation reliability of a power distribution network automatic system can be seriously influenced. Specifically, the distribution network automatic control terminal can be used for remote monitoring, control and the like of a distribution network, and can realize functions of data acquisition, control, communication and the like; illustratively, feeder terminals and station terminals, etc. are included. Therefore, the embodiment of the application provides a distribution terminal communication system based on an LoRa technology, which mainly comprises a communication terminal and a communication base station 2, and aims at the problem that the installation position of a distribution network automation control terminal has a poor signal or no signal.
In one embodiment, the LoRa-based power distribution terminal communication system, as shown in fig. 1, includes a communication terminal and a communication base station.
The communication terminal includes:
the data information transmission port is used for connecting the automatic control terminal of the power distribution network;
a first LoRa communication module; and the first data port of the first LoRa communication module is connected with the data information transmission port.
And the first antenna is connected with the second data port of the first LoRa communication module.
The communication base station comprises:
and the second antenna is used for being in communication connection with the first antenna.
A second LoRa communication module; and a first data port of the second LoRa communication module is connected with the second antenna.
The mobile communication module is connected with a second data port of the second LoRa communication module; the mobile communication module is used for being in communication connection with the power distribution network main station through a mobile network.
Specifically, in the distribution terminal communication system based on LoRa, the communication terminal includes data information transmission port, first LoRa communication module and first antenna, and the communication base station includes second LoRa communication module, second antenna and mobile communication module. Specifically, the data information transmission port is connected with the distribution network automatic control terminal and is used for acquiring data information of the distribution network automatic control terminal; a first data port of the first LoRa communication module is connected with a data information transmission port, and a second data port is connected with a first antenna; a first data port of the second LoRa communication module is connected with a second antenna, and a second data port is connected with the mobile communication module; the first antenna is in communication connection with the second antenna, and the mobile communication module is in communication connection with the power distribution network master station. Based on the structure, the first LoRa communication module can acquire data information of the distribution network automation control terminal through the data information transmission port and send the acquired data information to the communication base station through the first antenna; and a second LoRa communication module of the communication base station receives data information sent by the communication terminal through a second antenna, and further the second LoRa communication module can transmit the received data information to the power distribution network master station through a mobile communication module.
According to the embodiment of the application, the data information transmission between the power distribution network main station and the power distribution network automatic control terminal is completed by utilizing the cooperation of the communication terminal and the communication base station; the communication terminal can be arranged close to the distribution network automatic control terminal, and data transmission between the communication terminal and the distribution network automatic control terminal can be realized by adopting wired connection, so that the timeliness and the reliability of data information transmission are effectively improved. The communication base station can be arranged in an environment with good communication condition; communication Terminal and communication base station adopt the loRa technique to carry out communication connection, can gather and transmit the Data information of distribution network automation control Terminal fast, accurately, and, wireless communication based on the loRa technique can reach kilometer rank signal coverage radius, and signal penetration capacity far exceeds wireless communication devices such as DTU (Data Transfer Unit, Data transmission Unit)/RTU (Remote Terminal Unit), effectively improves the coverage and the transmission ability of this application embodiment. Furthermore, the communication base station is in communication connection with the power distribution network master station through the mobile communication module, and data information of the power distribution network automatic control terminal collected by the communication base station can be stably and reliably transmitted to the power distribution network master station.
It should be noted that the communication terminal can be connected with at least one distribution network automation control terminal; the communication base station can be connected with at least one communication terminal; based on the method, the power distribution terminal communication system can be flexibly expanded, and the reliability and stability of signal coverage and data information transmission are effectively improved through a multi-level communication structure. The data information transmission port may be configured as an RS485 port, an RJ45 port, an RS232 port, a USB (Universal Serial Bus), a bluetooth wireless port, or a Wi-Fi (wireless internet access) port according to actual requirements, and is not limited herein. The LoRa communication module mentioned in the embodiments of the present application may be mainly formed by an existing LoRa module and a peripheral circuit, which is not specifically limited herein. Accordingly, the antenna mentioned in the embodiments of the present application may be selected according to actual signal transmission requirements, for example, a high gain antenna, and is not limited herein. The mobile communication module can be used for accessing a mobile communication network and transmitting data information of the power distribution network automatic control terminal to the power distribution network master station through the mobile communication network; alternatively, the mobile communication module may be a 3G (3rd-Generation, third Generation mobile communication technology) module, a 4G (4 th-Generation, fourth Generation mobile communication technology) module, a 5G (5th-Generation, fifth Generation mobile communication technology) module, or the like. Based on the above, the communication terminal is an omnidirectional transparent transmission type wireless communication terminal, and the communication base station is an omnidirectional transparent transmission type wireless communication base station; the power distribution terminal communication system is an omnidirectional transparent transmission type wireless communication system. The signal penetrability of this application embodiment is strong, effectively solves distribution network automation control terminal communication signal poor or no signal scheduling problem.
In one embodiment, the first LoRa communication module is a spread spectrum modulation communication module; the second LoRa communication module is a spread spectrum modulation communication module.
Specifically, the first LoRa communication module and the second LoRa communication module both use spread spectrum modulation wireless communication technology to transmit data information between the communication terminal and the communication base station. Based on the structure, the variable spread spectrum factor greatly improves the system capacity of the whole network, enables the signal coverage radius to reach the kilometer level, and further improves the signal penetration capacity.
In one embodiment, the first LoRa communication module is a cyclic interleaving error correction coding communication module; the second LoRa communication module is a cyclic interleaving error correction coding communication module.
Specifically, the first LoRa communication module and the second LoRa communication module may further employ a cyclic interleaving error correction coding technique to perform data information transmission between the communication terminal and the communication base station. Based on the structure, the anti-interference performance and the channel capacity of the system wireless communication can be greatly improved, and the data transmission safety is effectively enhanced.
In one embodiment, as shown in fig. 2, the communication terminal further includes a first power module; the input end of the first power supply module is used for being connected with a power port of the distribution network automation control terminal, and the output end of the first power supply module is connected with the first LoRa communication module.
Specifically, the first power module may obtain power from the distribution network automation control terminal and further supply power to each module of the communication terminal. Optionally, the first power module may include a power conversion circuit. Further, the first power module may further include a rechargeable battery. Based on the principle of getting electricity on site, the power supply part of the communication terminal can lead out a power line from a power supply port of the distribution network automatic control terminal and is connected with a rechargeable battery to charge the rechargeable battery; based on this, under the circumstances such as distribution network automation control terminal tripping operation, communication terminal still can keep continuing to work.
In one embodiment, as shown in fig. 2, the communication base station further includes a second power module; the second power module is connected with the second LoRa communication module and the mobile communication module respectively.
Specifically, the communication base station further comprises a second power supply module respectively connected with the second LoRa communication module and the mobile communication module. The second power supply module is used for supplying power to each module of the communication base station; in particular, the second power module may include a power conversion circuit. Further, the second power module may also be a charging power module.
In one embodiment, the second power module includes a solar unit and a battery. The input end of battery is connected solar energy unit, and the output of battery is connected second loRa communication module and mobile communication module respectively.
Specifically, the second power module includes a solar unit for converting solar energy into electric energy, and a storage battery connected to the solar unit. Based on the structure, the power supply part of the communication base station can adopt a hybrid power supply mode of taking electricity by solar energy and supplying power by a storage battery; under the stronger condition of illumination intensity, not only can satisfy the power supply demand of self equipment still can charge the battery, ensure the long-time duration of equipment.
In one embodiment, the data information transfer port is a wired connection port.
Particularly, a wired connection mode can be adopted between the communication terminal and the distribution network automatic control terminal, and the collection stability of data information is improved. The type of wired port can be selected according to actual requirements.
In one embodiment, as shown in fig. 3, the mobile communication module is a 4G module.
Specifically, the communication base station can adopt a 4G module to access a mobile communication network, and then establishes connection with a power distribution network master station, so that stable and reliable data information transmission is realized. Furthermore, the distribution network master station can issue a command to the communication base station for execution after analysis and processing.
In one embodiment, as shown in fig. 3, the first antenna is a high gain antenna; the second antenna is a high gain antenna.
Particularly, the high-gain antenna is used for uniformly radiating data information transmitted in an electromagnetic wave form, the effective utilization rate of signal radiation power is increased, the confidentiality of the data information is improved, the anti-interference capacity of signal transmission is enhanced, and the signal penetrability and the coverage range of a communication terminal and a communication base station are improved. Based on the structure, the LoRa communication module quickly and accurately collects data information of the communication terminal and the distribution network master station through the high-gain antenna to effectively transmit and receive the data information, the frequency range of the LoRa communication module is from 410MHz to 510MHz (typically 433M and 470M), and the sensitivity of the LoRa communication module is up to-120 dBm; further, a spread spectrum modulation wireless communication gain technology is adopted for data transmission, and the data transmission rate can be 1.2k (kilobytes per second) to 300 k; the communication base station transmits the data information of the distribution network automatic control terminal to the distribution network main station, and information exchange between the distribution network automatic control terminal and the distribution network main station is achieved.
In one embodiment, a power distribution terminal communication system includes a communication terminal and a communication base station.
A communication terminal includes:
1. the first LoRa communication module is used for collecting data information of the distribution network automation control terminal, transmitting and receiving the data information with a ground communication base station through a high-gain antenna, wherein the frequency range is from 410MHz to 510MHz (typical frequencies such as 433M and 470M), and the sensitivity is as high as-120 dBm; the spread spectrum modulation wireless communication technology is adopted for data transmission, the data transmission rate can be 1.2K to 30K, data information of the distribution network automation terminal can be rapidly and accurately collected and transmitted, the signal coverage radius of kilometer level is achieved, and the signal penetration capacity far exceeds that of wireless communication devices such as DTU/RTU and the like.
2. The high-gain antenna (belonging to the first antenna) is used for uniformly radiating data information transmitted in an electromagnetic wave form, increasing the effective utilization rate of signal radiation power, improving the confidentiality of the data information and enhancing the anti-interference capability of signal transmission, and is more favorable for improving the signal penetrability and the coverage range of a communication terminal.
3. The power supply part of the communication terminal generally adopts the principle of getting electricity on site, leads out a power line from a power port of the distribution network automation control terminal, and is connected with the power module to charge the power module; under the condition that the automatic control terminal of the power distribution network trips, the communication terminal can still be kept working continuously.
The communication base station comprises:
1. the second LoRa communication module is used for rapidly and accurately collecting data information of the communication terminal and the distribution network master station through the high-gain antenna, effectively transmitting and receiving the data information, wherein the frequency range is from 410MHz to 510MHz (typical frequencies are 433M, 470M and the like), and the sensitivity is as high as-120 dBm; data transmission is carried out by adopting a spread spectrum modulation wireless communication gain technology, and the data transmission rate can be 1.2K to 300K; the data information can be transmitted to the power distribution network master station, and information exchange between the power distribution network automatic control terminal and the power distribution network master station is realized.
2. The high-gain antenna (belonging to the second antenna) is used for uniformly radiating data information transmitted in an electromagnetic wave form, increasing the effective utilization rate of signal radiation power, improving the confidentiality of the data information and enhancing the anti-interference capability of signal transmission; the signal penetrability and the coverage range of the communication base station can be improved.
3. And the power supply part of the communication base station adopts a hybrid power supply mode of taking electricity by solar energy and supplying power by a storage battery. Under the condition that the illumination intensity is stronger, not only can satisfy the power supply demand of self equipment, still can charge the battery, ensure the long-time duration of device.
The 4.4G module is used for stably and reliably transmitting the data information of the distribution network automation control terminal collected by the communication base station to the distribution network master station; the master station can issue a command to the communication base station for execution after analysis and processing.
The distribution network automation control terminal is connected with the communication terminal through a wire. After the data information of the distribution network automation control terminal is transmitted to the communication terminal, the communication between the communication terminal and the communication base station is connected through an LoRa technology, a wireless communication spread spectrum modulation mode is used, the system capacity of the whole network is greatly improved through variable spread spectrum factors, and meanwhile, efficient cyclic interleaving error correction coding is adopted, so that the anti-interference performance and the channel capacity of the wireless communication of the system are greatly improved. Based on this, data information of the distribution network automatic control terminal can be transmitted to a distribution network main station through GPRS (General Packet radio service) wireless communication of the 4G module after being switched by the LoRa technology, so that the problems of poor communication signal or no signal and the like of the distribution network automatic control terminal are effectively solved while the network communication safety of the distribution network automatic control terminal is effectively improved.
In one embodiment, a power distribution network communication system is provided, comprising:
distribution network automation control terminal.
The power distribution terminal communication system based on the LoRa is described above.
And the power distribution terminal communication system is connected with the power distribution network automatic control terminal.
Specifically, the power distribution network communication system may include at least one power distribution network automation control terminal, and a power distribution terminal communication system connecting the power distribution network automation control terminals. It should be noted that one distribution terminal communication system may be connected to at least one distribution network automation control terminal; meanwhile, the distribution network communication system may include at least one distribution terminal communication system. Based on this, this application embodiment can be according to actual demand, and nimble extension realizes the comprehensive coverage of distribution network communication network.
In one embodiment, as shown in fig. 4, the power distribution network communication system further includes a power distribution network master station; and the power distribution terminal communication system is in communication connection with the power distribution network master station.
Specifically, the power distribution network communication system can comprise a power distribution network master station, and further perfects a power distribution network communication network.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.
Claims (10)
1. A distribution terminal communication system based on LoRa is characterized by comprising a communication terminal and a communication base station;
the communication terminal includes:
the data information transmission port is used for connecting the automatic control terminal of the power distribution network;
a first LoRa communication module; a first data port of the first LoRa communication module is connected with the data information transmission port;
the first antenna is connected with a second data port of the first LoRa communication module;
the communication base station comprises:
a second antenna in communicative connection with the first antenna;
a second LoRa communication module; a first data port of the second LoRa communication module is connected with the second antenna;
the mobile communication module is connected with a second data port of the second LoRa communication module; the mobile communication module is used for being in communication connection with the power distribution network main station through a mobile network.
2. The LoRa-based power distribution terminal communication system according to claim 1,
the first LoRa communication module is a spread spectrum modulation communication module;
and the second LoRa communication module is a spread spectrum modulation communication module.
3. The LoRa-based power distribution terminal communication system according to claim 1,
the first LoRa communication module is a cyclic interleaving error correction coding communication module;
and the second LoRa communication module is a cyclic interleaving error correction coding communication module.
4. The LoRa-based power distribution terminal communication system according to claim 1,
the communication terminal also comprises a first power supply module; the input of first power module is used for connecting distribution network automation control terminal's power port, first power module's output is connected first loRa communication module.
5. The LoRa-based power distribution terminal communication system of claim 1, wherein the communication base station further comprises a second power module;
the second power module is respectively connected with the second LoRa communication module and the mobile communication module.
6. The LoRa-based power distribution terminal communication system of claim 5, wherein the second power module comprises a solar unit and a battery;
the input of battery is connected the solar energy unit, the output of battery is connected respectively the second loRa communication module with mobile communication module.
7. The LoRa-based power distribution terminal communication system of any of claims 1 to 6, wherein the data information transmission port is a wired connection port.
8. The LoRa-based power distribution terminal communication system according to any one of claims 1 to 6,
the mobile communication module is a 4G module.
9. A power distribution network communication system, comprising:
a distribution network automation control terminal;
an LoRa-based power distribution terminal communication system as claimed in any one of claims 1 to 8;
and the power distribution terminal communication system is connected with the power distribution network automatic control terminal.
10. The power distribution network communication system according to claim 9, further comprising a power distribution network master station;
and the power distribution terminal communication system is in communication connection with the power distribution network master station.
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| CN201921676409.XU CN210518843U (en) | 2019-09-30 | 2019-09-30 | Power distribution terminal communication system and power distribution network communication system based on LoRa |
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Effective date of registration: 20200922 Address after: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Patentee after: Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd. Address before: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Patentee before: GUANGZHOU POWER SUPPLY Co.,Ltd. |