CN114157325B - Multi-head end communication conversion tail end device and system based on HPLC carrier network - Google Patents
Multi-head end communication conversion tail end device and system based on HPLC carrier network Download PDFInfo
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- CN114157325B CN114157325B CN202111336677.9A CN202111336677A CN114157325B CN 114157325 B CN114157325 B CN 114157325B CN 202111336677 A CN202111336677 A CN 202111336677A CN 114157325 B CN114157325 B CN 114157325B
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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
- H04B3/544—Setting up communications; Call and signalling arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/08—Protocols for interworking; Protocol conversion
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Abstract
The invention belongs to the technical field of power communication, and particularly relates to a multi-head communication conversion tail end device and a system based on an HPLC carrier network, wherein the device comprises: the system comprises an HPLC communication module, a communication protocol conversion module and an ammeter communication module, wherein the communication protocol conversion module is connected with an intelligent terminal through the HPLC module and is connected with the intelligent ammeter module through the ammeter communication module; the communication protocol conversion module is internally provided with a tail end conversion mechanism which is used for storing the searched address of the intelligent electric meter, communicating with the intelligent terminal according to the address of the equipment, replying the stored data according to the data reading message sent by the intelligent terminal through HPLC communication, or configuring the electric meter reading message sent by the intelligent terminal through HPLC communication into an intelligent electric meter data reading frame, sending the intelligent electric meter data reading frame to the intelligent electric meter, and receiving the reply data of the intelligent electric meter and forwarding the reply data to the head end equipment. The invention can realize the requirement of multi-network transmission and multi-platform data analysis of the metering data of the same intelligent electric meter.
Description
Technical Field
The invention belongs to the technical field of power communication, and particularly relates to a multi-head-end communication conversion tail end device and system based on an HPLC carrier network.
Background
High Power Line Carrier (High Power Line Carrier), referred to as HPLC for short, is a stable and reliable communication method with fast communication speed and safe data transmission, which can use Power lines to transmit data. However, the power carrier communication in the prior art also has certain limitations. On one hand, in the application of power line broadband carrier communication in power utilization information acquisition, in the whole communication network building process, the same head end, namely a master node device and a plurality of slave end devices such as intelligent electric energy meters in the same network) are built in the same communication network together; on the same network, the head end and the tail end are networked, and the tail end is installed on different slave end equipment and is merged into the network to the head end equipment, and then the network can not be formed with other head end equipment again, namely, the tail end device can only be networked to one head end equipment, so that only one head end equipment can be arranged in the same network, namely, after the same tail end device is networked, the data can only be copied by one head end information.
On the other hand, with the continuous popularization of the national grid company in the large-scale application of the HPLC broadband carrier, the intelligent requirements of the intelligent operation and maintenance of the low-voltage power distribution system are continuously increased, the multi-network transmission of the metering data of the same intelligent electric meter is realized, the requirement of multi-platform data analysis is higher and higher, and the single head-end equipment cannot meet the current application requirements, so that the plurality of head-end equipment in one distribution area operate, and the same intelligent electric meter data is acquired, which becomes a problem to be solved urgently at present.
In addition, in the existing low-voltage district intelligent meter reading system, in the process of HPLC networking, after the address of the intelligent electric meter is accessed to the network, the head end equipment needs to be managed by the network address management, because the communication address of the intelligent electric meter in the network only allows the access to the network to be realized at one head end equipment, when a new head end equipment in the district needs to read the intelligent electric meter, the communication addresses of the intelligent electric meters need to be managed by two head ends, so that the intelligent electric meter equipment conflicts in the archive management, and the reading of the intelligent electric meter cannot be realized simultaneously.
Disclosure of Invention
In order to meet the actual requirements in the technical field of power communication, the invention overcomes the defects in the prior art, and solves the technical problems that: a multi-head communication conversion system and method based on an HPLC carrier network are provided to realize communication switching between a multi-head end and the same tail end in a power HPLC carrier network.
In order to solve the technical problems, the invention adopts the technical scheme that: a multi-head end communication conversion tail end device based on an HPLC carrier network comprises: the system comprises an HPLC communication module, a communication protocol conversion module and an ammeter communication module, wherein the communication protocol conversion module is connected with an intelligent terminal through the HPLC module and is connected with the intelligent ammeter module through the ammeter communication module;
the communication protocol conversion module is used for executing the following steps:
s1, after power-on, listening network information of head end equipment and starting a network access application, meanwhile, starting an automatic meter searching mechanism, searching an address of a downlink intelligent electric meter of the equipment, and storing the searched address of the intelligent electric meter;
s2, when the network is accessed, accessing the network according to the self address of the equipment, and if the network is not accessed successfully, accessing the network according to the self address of the equipment and re-initiating a network access application;
s3: after receiving the successful network access permission information sent by the intelligent terminal and merging the information into the network, sending the stored communication address of the intelligent electric meter to the intelligent terminal through the HPLC module according to the query information sent by the intelligent terminal;
s4: and replying the self-stored data according to the data reading message sent by the intelligent terminal through HPLC communication, or configuring the ammeter reading message sent by the intelligent terminal through HPLC communication into an intelligent ammeter data reading frame, sending the intelligent ammeter data reading frame to the intelligent ammeter, and receiving the reply data of the intelligent ammeter and forwarding the reply data to the head end equipment.
The ammeter communication module is an RS485 communication module.
The communication protocol conversion module is also used for storing the protocol type and the RS485 communication rate of the intelligent electric meter and sending the query information to the head end equipment according to the query information sent by the head end equipment.
In addition, the invention also provides a multi-head communication system based on the HPLC carrier network, which comprises an intelligent terminal, a first platform and a plurality of multi-head communication conversion tail end devices based on the HPLC carrier network, wherein the first platform is used for adding management files to the intelligent terminal.
The platform is in communication connection with the intelligent terminal through a mobile network.
And when the first platform adds the management file to the intelligent terminal, only increasing the communication address of the communication conversion tail end device.
When the tail end device accesses the network by the communication address of the tail end device, the searched intelligent electric meter address is not reported to the head end device, and the tail end device does not access the network by the intelligent electric meter address.
And after the intelligent terminal acquires the intelligent electric meter communication address stored by the tail end device, respectively managing the intelligent electric meter communication address and the tail end address and establishing an association relation.
The multi-head end communication system based on the HPLC carrier network further comprises a concentrator and a second platform, wherein the second platform is used for adding a management file to the concentrator, and the concentrator is in communication connection with the smart meter through HPLC.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention provides a multi-head-end communication conversion tail-end device and a system based on an HPLC carrier network, which can realize that an intelligent ammeter can be read by different head-end equipment through an upper-layer tail-end conversion mechanism of the tail-end device, solve the key technical problems that a plurality of head-end equipment cannot be operated in one transformer area and the same intelligent ammeter data is obtained in the prior art, and solve the requirements of multi-network transmission and multi-platform data analysis of metering data from the same intelligent ammeter.
2. The device has the functions of self-searching, self-networking and node information self-management, and in the process of reading data by the head-end device, the communication address must be used, if the address of the searched intelligent electric meter is reported to the head-end device during network access, the same address of the intelligent electric meter is in different head-end devices, the intelligent electric meter has a sudden network access, and finally only one head-end device can read the address. The method has good application prospect in the process of intelligent operation and maintenance and digital analysis requirements of the transformer area.
Drawings
Fig. 1 is a schematic structural diagram of a multi-headend communication conversion tail end device based on an HPLC carrier network according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating table searching of the middle-end device according to an embodiment of the present invention;
fig. 3 is a schematic diagram illustrating a network access process of a tail-end device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a multi-head end communication system based on an HPLC carrier network according to a second embodiment of the present invention;
FIG. 5 is a flowchart illustrating the establishment of association relationships according to a second embodiment of the present invention;
fig. 6 is a flowchart of data copying and reading in the second embodiment of the invention.
Detailed Description
In order to make the technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to specific embodiments and accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention; all other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
Example one
As shown in fig. 1, an embodiment of the present invention provides a multi-headend communication switching tail end apparatus based on an HPLC carrier network, including: the system comprises an HPLC communication module, a communication protocol conversion module and an ammeter communication module, wherein the communication protocol conversion module is connected with an intelligent terminal through the HPLC module and is connected with the intelligent ammeter module through the ammeter communication module.
The communication protocol conversion module is internally provided with a tail end conversion mechanism, and the specific method comprises the following steps:
s1, after the power is on, network information of head end equipment is monitored, network access application is started, meanwhile, an automatic meter searching mechanism is started, the equipment downlink addresses of the intelligent electric meters are searched, and the searched addresses of the intelligent electric meters are stored, as shown in figure 2. And the communication protocol conversion module automatically searches the address of the intelligent electric meter at regular time and updates the address of the intelligent electric meter with the change in time.
And S2, as shown in the figure 3, when the network is accessed, the network is accessed according to the self address of the equipment, and if the network is not accessed successfully, the network access application is initiated again according to the self address of the equipment.
S3: and after receiving the successful merging of the network access permission information sent by the intelligent terminal into the network, sending the stored communication address of the intelligent electric meter to the intelligent terminal through the HPLC module according to the query information sent by the intelligent terminal.
S4: the data stored in the intelligent terminal is replied according to the data reading message sent by the intelligent terminal through HPLC communication, or the ammeter reading message sent by the intelligent terminal through HPLC communication is configured into an intelligent ammeter data reading frame, and the intelligent ammeter data reading frame is sent to the intelligent ammeter through RS485, and meanwhile, the replied data of the intelligent ammeter is received and forwarded to the head end equipment.
Specifically, as shown in fig. 1, the electric meter communication module is an RS485 communication module. The communication protocol conversion module is also used for storing the protocol type and the RS485 communication rate of the intelligent electric meter and sending the query information to the head end equipment according to the query information sent by the intelligent terminal.
In this embodiment, after the tail end device is powered on, the head end device network information is listened to and a network access application is started; when the tail end device accesses the network, accessing the network according to the address of the device, if the network access is unsuccessful, re-initiating a network access application, and if the network access is unsuccessful, the tail end device does not use the address of the intelligent electric meter searched by the un-switched meter, and the intelligent terminal serving as the head end device allows the network access after receiving the application of the tail end device; after the tail end device successfully accesses the network, the intelligent terminal inquires whether the tail end device has searched the address of the intelligent electric meter, and inquires the communication address, the protocol type and the RS485 communication rate of the intelligent electric meter stored in the tail end device; after the intelligent terminal acquires the intelligent electric meter communication address stored by the tail end device, the intelligent electric meter communication address and the tail end address are respectively managed and an association relation is established. Therefore, the tail-end device of this embodiment can implement data copying of other head-end devices (e.g., intelligent terminals) outside the concentrator.
Example two
As shown in fig. 4, an embodiment of the present invention provides a multi-head communication conversion system based on an HPLC carrier network, including multiple multi-head communication conversion tail-end devices based on an HPLC carrier network as claimed in claim 1, an intelligent terminal, and a first platform, where the first platform is configured to add a management profile to the intelligent terminal.
Specifically, as shown in fig. 4, in this embodiment, the first platform is in communication connection with the intelligent terminal through a 4G mobile network.
Specifically, in this embodiment, when the first platform adds the management file to the intelligent terminal, only the communication address of the communication conversion tail end device is added. When the tail end device accesses the network by using the communication address of the tail end device, the searched intelligent electric meter address is not reported to the head end device, and the tail end device does not access the network by using the intelligent electric meter address.
Specifically, as shown in fig. 5, in this embodiment, after the intelligent terminal acquires the communication address of the intelligent electric meter stored in the tail end device, the communication address of the intelligent electric meter and the tail end address are respectively managed and an association relationship is established. That is to say, in this embodiment, the head end device reads the communication address of the tail end device and manages the communication addresses of the smart meters in the non-local network independently, and establishes a corresponding relationship between the communication address of the tail end device and the communication address of the smart meter.
Further, in this embodiment, the system further includes a concentrator and a second platform, where the second platform is used to add a management archive to the concentrator, and the concentrator is in communication connection with the smart meter through HPLC. Therefore, in this embodiment, the tail end device and the smart meter are not in the same HPLC communication network, the HPLC carrier network of the smart meter is networked to a non-local head end network (i.e., the original concentrator), and the tail end device with the tail end conversion mechanism is not in the same head end network, i.e., the smart meter is networked to the concentrator and the network where the second platform is located through the HPLC, and the tail end device is networked to another head end network (i.e., the smart terminal) through the HPLC, so that the smart terminal can read data through the tail end device, and the original concentrator can read data through the HPLC network, thereby reading data of multiple head ends.
As shown in fig. 6, the data copying process of the intelligent terminal in this embodiment is as follows:
step 1: after the intelligent terminal is powered on, the first platform adds a tail end communication address to the intelligent terminal;
step 2: after the tail end device is connected to a network, the intelligent terminal inquires a communication address of the intelligent electric meter stored in the tail end device;
and 3, step 3: when the head end equipment reads the data of the tail end device, framing according to the communication address and the protocol type of the tail end device, sending a reading framing message to the tail end device through HPLC, and receiving the data replied by the tail end device;
and 4, step 4: when the head end equipment reads the data of the intelligent electric meter, the head end equipment frames according to the communication address of the tail end device, the protocol type is transparent forwarding, forwarding contents are configured into data reading frames of the intelligent electric meter, then the data reading frames are issued to the intelligent electric meter, and reply data of the intelligent electric meter are received.
In the embodiment, the type of reading data by the intelligent terminal is executed according to two categories, one category is reading data of the tail end device, after the intelligent terminal is powered on, the first platform issues the address of the tail end device to the intelligent terminal, and when the intelligent terminal reads the data of the tail end device, the reading message is organized according to the type of the tail end device protocol; the other type is that the head end equipment reads the data of the intelligent electric meter through the tail end device, the platform does not issue the communication address of the intelligent electric meter to the intelligent terminal, when the intelligent terminal reads the data of the intelligent electric meter, the communication address of the intelligent electric meter searched by the tail end device is firstly obtained from the tail end device, then the communication message is framed, the communication address is the tail end device address, and the protocol type is issued according to a transparent forwarding mode.
In addition, in this embodiment, when the tail end device receives the head end reading message and determines that the head end reading message is reading self data, the tail end device directly organizes the self data message to reply to the head end device, when the tail end device receives the head end device, the tail end device transmits the head end reading message to the smart meter through RS485, and when the smart meter data is received, the tail end device organizes the message to reply to the head end device. In addition, in the conversion mechanism of this embodiment, the protocol types supported by communication satisfy: DL-T645-2007 communication protocol and
QGDW 11778-2017 data exchange protocol for object-oriented electricity consumption information.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A multi-head end communication conversion tail end device based on an HPLC carrier network is characterized by comprising: the system comprises an HPLC communication module, a communication protocol conversion module and an electric meter communication module, wherein the communication protocol conversion module is connected with an intelligent terminal through the HPLC communication module and is connected with the intelligent electric meter module through the electric meter communication module;
the communication protocol conversion module is used for executing the following steps:
s1, after power-on, listening to network information of head-end equipment and starting a network access application, meanwhile, starting an automatic meter searching mechanism, descending an address of an intelligent electric meter by searching equipment, and storing the searched address of the intelligent electric meter;
s2, when the network is accessed, accessing the network according to the communication address of the equipment, and if the network is not accessed successfully, accessing the network according to the communication address of the equipment and initiating a network access application again;
s3: after the network access permission information sent by the intelligent terminal is received and the network access is successfully merged into the network, the stored communication address of the intelligent electric meter is sent to the intelligent terminal through the HPLC communication module according to the query information sent by the intelligent terminal;
s4: and replying the self-stored data according to the data reading message sent by the intelligent terminal through HPLC communication, or configuring the ammeter reading message sent by the intelligent terminal through HPLC communication into an intelligent ammeter data reading frame, sending the intelligent ammeter data reading frame to the intelligent ammeter, and receiving the reply data of the intelligent ammeter and forwarding the reply data to the head end equipment.
2. The multi-head communication conversion tail end device based on the HPLC carrier network as claimed in claim 1, wherein the electric meter communication module is an RS485 communication module.
3. The multi-headend communication conversion backend device based on the HPLC carrier network of claim 1, wherein the communication protocol conversion module is further configured to store a protocol type and an RS485 communication rate of the smart meter, and send the query information to the headend device according to the query information sent by the headend device.
4. A multi-head communication system based on an HPLC carrier network, comprising an intelligent terminal, a first platform and a plurality of multi-head communication conversion tail-end apparatuses based on an HPLC carrier network according to claim 1, wherein the first platform is used for adding a management file to the intelligent terminal.
5. An HPLC carrier network based multi-head end communication system as recited in claim 4, wherein the first platform and the intelligent terminal are connected through mobile network communication.
6. The HPLC carrier network-based multi-head communication system of claim 4, wherein the first platform adds only the communication address of the communication conversion tail end device when adding the management file to the intelligent terminal.
7. The HPLC carrier network-based multi-head end communication system of claim 4, wherein the tail end device does not report the searched smart meter address to the head end device and does not enter the network with the smart meter address when entering the network with the device's own communication address.
8. The multi-head communication system based on the HPLC carrier network as claimed in claim 4, wherein the smart terminal acquires the smart meter communication address stored in the tail end device, and then manages and associates the smart meter communication address and the tail end address respectively.
9. An HPLC carrier network based multi-head end communication system as recited in claim 4, further comprising a concentrator and a second platform, wherein the second platform is used for adding management files to the concentrator, and the concentrator is connected with the smart meter through HPLC communication.
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| CN112305969A (en) * | 2020-11-05 | 2021-02-02 | 南京伯罗奔尼能源管理有限公司 | Comprehensive safety monitoring system and method for intelligent power distribution room facing power internet of things |
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| CN101236693B (en) * | 2007-02-01 | 2011-08-10 | 上海久隆电力（集团）有限公司 | Intelligent meter reading system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112398508A (en) * | 2020-11-03 | 2021-02-23 | 国网山东省电力公司青岛供电公司 | Intelligent module implementation method capable of realizing single-core double-channel based on HPLC communication |
| CN112305969A (en) * | 2020-11-05 | 2021-02-02 | 南京伯罗奔尼能源管理有限公司 | Comprehensive safety monitoring system and method for intelligent power distribution room facing power internet of things |
| CN113114306A (en) * | 2021-04-25 | 2021-07-13 | 青岛东软载波科技股份有限公司 | Broadband and narrowband communication switching device and method based on power line carrier communication |
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