CN110492907A - The method and device of archives is established for ammeter - Google Patents
The method and device of archives is established for ammeter Download PDFInfo
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- CN110492907A CN110492907A CN201810462955.7A CN201810462955A CN110492907A CN 110492907 A CN110492907 A CN 110492907A CN 201810462955 A CN201810462955 A CN 201810462955A CN 110492907 A CN110492907 A CN 110492907A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
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- G—PHYSICS
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
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- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
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- H—ELECTRICITY
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Abstract
The embodiment of the present application discloses a kind of method and device that archives are established for ammeter, and data acquisition unit sends identification signal by power line；Data acquisition unit receives the first PLC ammeter mark that the first PLC ammeter is sent；First PLC ammeter mark is sent to main website by data acquisition unit；Data acquisition unit receives the first PLC ammeter that main website is sent and identifies corresponding first ammeter archives.The PLC ammeter in area is connected with data acquisition unit by power line on the same stage, after data acquisition unit sends identification signal by power line, the PLC ammeter that identification signal can be received is completed the concurrent power transmission table of networking and is identified to data acquisition unit, it ensure that the accuracy for the PLC ammeter archives that the ammeter mark received according to data acquisition unit is established, and then PLC ammeter can be mounted to correct data acquisition unit according to PLC ammeter archives in the following, guaranteeing that each PLC ammeter can work normally by main website.
Description
Technical Field
The application relates to the technical field of electric power systems, in particular to a method and a device for establishing a file for an ammeter.
Background
The Advanced Metering Infrastructure (AMI) system is an automatic two-way flow-through Infrastructure system between an IP-addressed smart meter and a utility company. The AMI system mainly includes main website, Data Concentrator Unit (DCU) and Power Line Communication (PLC) ammeter, and the PLC ammeter is after main website is on-Line, and the main website just can accomplish the Data acquisition to the PLC ammeter through the DCU.
In order to realize the online of the PLC electric meter in the main station, the file relationship between the DCU and the PLC electric meter needs to be established first, and after the file relationship is established, the DCU can receive the information reported by the PLC electric meter. Constitute PLC communication network between DCU and the PLC ammeter among the conventional art, the process of establishing PLC ammeter archives relation does: the DCU sends power line carrier signal, and the PLC ammeter reports ammeter information for the DCU after receiving the power line carrier signal that the DCU sent, and the DCU reports received ammeter information for main website, and the main website is direct below the PLC ammeter that corresponds ammeter information carries to the DCU, communicates between later DCU and the PLC.
However, in the same power system, a plurality of areas generally exist, one area refers to a power supply range or area of one transformer, and the areas are not completely isolated from each other, so that crosstalk easily occurs when the PLC electric meter is connected to a network (i.e., joins a PLC network) or reports electric meter information. Therefore, the PLC electric meters in the first district are connected to the DCU in the second district when accessing the network or reporting the electric meter information, or the PLC electric meters in other districts are connected to the DCU in the first district when accessing the network or reporting the electric meter information. As shown in fig. 1, the PLC electric meter 2 in the station area 2 is networked through the DCU1 in the station area 1 due to signal crosstalk, but the master station cannot identify whether the PLC electric meter 2 belongs to the station area 1, and the master station directly mounts the PLC electric meter 2 under the DCU1 (that is, the master station records the correspondence between the PLC electric meter 2 and the DCU1 in a file). Because the PLC electric meter 2 does not belong to the region where the DCU1 is located, communication cannot be established between the PLC electric meter 2 and the DCU1, and communication cannot be established between the PLC electric meter 2 and the DCU2 at this time, so that the PLC electric meter 2 cannot normally operate. The PLC electric meter mounting error may occur by adopting the traditional technology, so that the PLC electric meter cannot work normally.
Disclosure of Invention
The application provides a method and a device for establishing a file for an ammeter, and aims to solve the problem that a PLC ammeter cannot work normally due to mounting errors caused by crosstalk.
In a first aspect, the present application provides a method for establishing a profile for an electricity meter, comprising: the data acquisition unit sends an identification signal through a power line, and the identification signal is used for indicating each power line communication PLC electric meter in a distribution area where the data acquisition unit is located to access the network; the data acquisition unit receives a first PLC electric meter identification sent by a first PLC electric meter, the first PLC electric meter is any one PLC electric meter in a distribution area where the data acquisition unit is located, and the first PLC electric meter identification is used for uniquely identifying the first PLC electric meter; the data acquisition unit sends the first PLC electric meter identification to the master station; the data acquisition unit receives a first ammeter file corresponding to the first PLC ammeter identification sent by the main station.
In this application, the PLC ammeter and the data acquisition unit in same platform district pass through the power line connection, after the data acquisition unit passes through power line transmission identification signal, the PLC ammeter that can receive identification signal accomplishes the network deployment and sends the ammeter sign for the data acquisition unit, the accuracy of the PLC ammeter archives of establishing according to the ammeter sign that the data acquisition unit was received has been guaranteed, and then the main website can be according to PLC ammeter archives with the PLC ammeter carry to the exact data acquisition unit below, guarantee that every PLC ammeter can all normally work.
With reference to the implementation manner of the first aspect, in a first possible implementation manner of the first aspect, the sending, by the data acquisition unit, the first PLC electric meter identifier to the master station includes: the data acquisition unit sends all PLC ammeter identifications received in the receiving time window to a main station, the PLC ammeter identifications comprise first PLC ammeter identifications, the starting time of the receiving time window is the time when the data acquisition unit sends out identification signals, and the length of the receiving time window is the preset time length.
The preset time is the longest time required by the PLC network to reach a stable state, and the data acquisition unit in the region can not receive a new PLC electric meter sending electric meter identification after receiving the time window.
With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the sending, by the data acquisition unit, all PLC electric meter identifiers received in the receiving time window to the master station includes: the data acquisition unit transmits all PLC electric meter identifications to the master station at one time after the receiving time window is finished; or the data acquisition unit sends all PLC electric meter identifications to the master station in batches in the receiving time window.
With reference to the first aspect or any one of the first to second possible implementation manners of the first aspect, in a third possible implementation manner of the first aspect, the identification signal is a zero-crossing disturbance signal, and the zero-crossing disturbance signal is a disturbance voltage signal that is opposite to the power line sine wave voltage before and after each zero crossing point of the power line sine wave voltage.
In a second aspect, the present application provides a method for establishing a profile for an electricity meter, comprising: the PLC electric meter receives the identification signal sent by the data acquisition unit through the power line; and the PLC electric meter is added into the PLC network of the data acquisition unit according to the identification signal, and sends the electric meter identification of the PLC electric meter to the data acquisition unit.
With reference to the implementation manner of the second aspect, in a first possible implementation manner of the second aspect, the PLC electric meter adds to the PLC network of the data acquisition unit according to the identification signal, and sends the electric meter identifier of the PLC electric meter to the data acquisition unit, including: the PLC ammeter sends the PLC ammeter identification to the data acquisition unit in a sending time window, the starting time of the sending time window is the time when the PLC ammeter receives the identification signal, and the length of the sending time window is the preset time length.
With reference to the second aspect or the first possible implementation manner of the second aspect, in a second possible implementation manner of the first aspect, the identification signal is a zero-crossing disturbance signal, and the zero-crossing disturbance signal is a disturbance voltage signal that is opposite to the power line sine wave voltage before and after each zero crossing point of the power line sine wave voltage.
In a third aspect, the present application provides an apparatus for establishing a profile for an electricity meter, comprising: the first sending module is used for sending identification signals by the data acquisition unit through the power line, and the identification signals are used for indicating each power line communication PLC electric meter in the distribution area where the data acquisition unit is located to access the network; the first receiving module is used for the data acquisition unit to receive a first PLC electric meter identification sent by a first PLC electric meter, the first PLC electric meter is any one PLC electric meter in a distribution area where the data acquisition unit is located, and the first PLC electric meter identification is used for uniquely identifying the first PLC electric meter; the second sending module is used for sending the first PLC electric meter identification to the master station by the data acquisition unit; and the second receiving module is used for receiving the first ammeter file corresponding to the first PLC ammeter identification sent by the main station by the data acquisition unit.
With reference to the implementation manner of the third aspect, in a first possible implementation manner of the third aspect, the second sending module includes: and the sending unit is used for sending all PLC electric meter identifications received in the receiving time window to the master station by the data acquisition unit, the all PLC electric meter identifications comprise first PLC electric meter identifications, the starting time of the receiving time window is the time when the data acquisition unit sends out the identification signal, and the length of the receiving time window is the preset time length.
With reference to the first possible implementation manner of the third aspect, in a second possible implementation manner of the third aspect, the sending unit includes: the first sending subunit is used for sending all the PLC electric meter identifications to the master station once after the data acquisition unit finishes the receiving time window; or the second sending subunit is used for sending all the PLC electric meter identifications to the master station in batches in the receiving time window by the data acquisition unit.
With reference to the third aspect or any one of the first to second possible implementation manners of the third aspect, in a third possible implementation manner of the third aspect, the identification signal is a zero-crossing disturbance signal, and the zero-crossing disturbance signal is a disturbance voltage signal that is opposite to the power line sine wave voltage before and after each zero crossing point of the power line sine wave voltage.
In a fourth aspect, the present application provides an apparatus for establishing a profile for an electricity meter, comprising: the receiving module is used for receiving the identification signal sent by the data acquisition unit through the power line by the PLC electric meter; and the sending module is used for adding the PLC electric meter into the PLC network of the data acquisition unit according to the identification signal and sending the electric meter identification of the PLC electric meter to the data acquisition unit.
With reference to the implementation manner of the fourth aspect, in a first possible implementation manner of the fourth aspect, the sending module includes: and the sending unit is used for sending the PLC electric meter identification to the data acquisition unit in a sending time window by the PLC electric meter, the starting time of the sending time window is the time when the PLC electric meter receives the identification signal, and the length of the sending time window is the preset time length.
With reference to the fourth aspect or the first possible implementation manner of the fourth aspect, in a second possible implementation manner of the fourth aspect, the identification signal is a zero-crossing disturbance signal, and the zero-crossing disturbance signal is a disturbance voltage signal that is opposite to the power line sine wave voltage before and after each zero crossing point of the power line sine wave voltage.
In a fifth aspect, the present application provides a data acquisition unit, comprising: PLC module, processor, memory and communication interface. The PLC module is used for sending an identification signal through the power line. The processor is used for receiving a first PLC ammeter identification sent by a first PLC ammeter, sending the first PLC ammeter identification to the main station, and receiving a first ammeter file corresponding to the first PLC ammeter identification sent by the main station. The memory is used for saving the ammeter sign of the PLC ammeter to reach the ammeter archives. The communication interface is used for communicating between the data acquisition unit and the PLC ammeter as well as between the data acquisition unit and the main station.
In a sixth aspect, the present application provides a PLC electric meter, comprising: PLC module, processor, memory and communication interface. The PLC module is used for receiving the identification signal sent by the data acquisition unit through the power line; the processor is used for controlling the PLC electric meter to be added into the PLC network of the data acquisition unit according to the identification signal and sending the electric meter identification of the PLC electric meter to the data acquisition unit. The memory is used for storing the received identification signal and the electric meter identification of the PLC electric meter. The communication interface is used for communication between the PLC ammeter and the data acquisition unit.
In a seventh aspect, the present application provides a computer-readable storage medium having stored thereon instructions that, when executed on a data acquisition unit, cause the data acquisition unit to perform the method of the first aspect and any possible implementation manner thereof.
In an eighth aspect, the present application provides a computer readable storage medium having stored thereon instructions that, when executed on a PLC electric meter, cause the PLC electric meter to perform the method of the second aspect and any possible implementation thereof.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without any creative effort.
FIG. 1 is a schematic diagram of a PLC meter crosstalk;
fig. 2 is a schematic flowchart of a method for establishing a file for an electricity meter according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram of a power carrier signal according to an embodiment of the present disclosure;
fig. 4 is a schematic diagram of a power carrier signal added with an identification signal according to an embodiment of the present application;
fig. 5 is a schematic diagram of a power carrier signal superimposed with an identification signal according to an embodiment of the present application;
fig. 6 is a schematic flowchart of another method for creating a file for an electric meter according to an embodiment of the present disclosure;
fig. 7 is a schematic diagram of an apparatus for creating a file for an electricity meter according to an embodiment of the present disclosure;
fig. 8 is a schematic view of another apparatus for establishing a file for an electric meter according to an embodiment of the present disclosure;
fig. 9 is a schematic structural diagram of a data acquisition unit according to an embodiment of the present application;
fig. 10 is a schematic structural diagram of a PLC electric meter according to an embodiment of the present application.
Detailed Description
In order to make the technical solutions in the embodiments of the present application better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be further described in detail with reference to the accompanying drawings
As shown in fig. 2, a schematic flow chart of a method for establishing a profile for an electric meter according to an embodiment of the present application is provided, where the method includes:
s101, the data acquisition unit sends an identification signal through a power line.
The power line is connected with the data acquisition unit and the PLC electric meter in the power communication system, and the data acquisition unit can send power carrier signals to the PLC electric meter in the local area (namely the area where the data acquisition unit is located) through the power line. However, due to factors such as transformer penetration, common zero line of adjacent areas, and spatial crosstalk between different areas, PLC electric meters of other areas may crosstalk into the local area during network access. Therefore, in the embodiment of the application, the data acquisition unit adds the identification signal into the power carrier signal sent by the power line, and only the PLC electric meters located in the same area as the data acquisition unit can receive the identification signal and access the network according to the identification signal. The identification signal that data acquisition unit sent in this application embodiment is used for instructing the PLC ammeter of this district to go into the net, can avoid the PLC ammeter to cross the mistake of going into the net that leads to of crosstalking, has guaranteed the communication of follow-up data acquisition unit and PLC ammeter.
Fig. 3 is a schematic diagram of a power carrier signal provided in an embodiment of the present application, and fig. 3 shows a sinusoidal power carrier signal. Since the power carrier signals transmitted through the power lines may be the same in the same power system, the signal frequency and the signal amplitude are the same in the waveform of the power carrier signal. Fig. 4 is a waveform obtained by adding an identification signal to the sinusoidal power carrier signal provided in fig. 3, where the identification signal u1 shown in fig. 4 is a zero-crossing disturbance signal, and the zero-crossing disturbance signal is a disturbance voltage signal that is opposite to the voltage of the sinusoidal power carrier signal and is a small time period before and after each zero crossing of the power carrier signal, for example, 1 microsecond or 2 microseconds. In this embodiment, the duration of the zero-crossing disturbing signal is required to be a small time period before and after each zero crossing point of the power carrier signal, so that the power carrier signal is ensured not to affect the normal work of the power system, and the PLC electric meter can accurately identify the identification signal. The duration of the zero-crossing disturbing signal can be set according to specific implementation requirements on the premise of not influencing the power line carrier signal, and the method is not limited in the application.
Since the zero-crossing disturbing signal is opposite to the power line sine wave voltage before and after each zero crossing point, the power carrier signal transmitted by the data acquisition unit through the power line after the zero-crossing disturbing signal is added is as shown in fig. 5, and the power carrier signal voltage in a tiny time period before and after each zero crossing point becomes 0. The data acquisition unit sends the power line carrier signal added with the identification signal to the PLC ammeter, indicates the PLC ammeter receiving the corresponding power line carrier signal to access the network, and the accessed PLC ammeter can communicate with the data acquisition unit subsequently.
The zero-crossing disturbing signal shown above is only one of the identification signals provided in the embodiment of the present application, and the identification signal in the embodiment may be other types of voltage signals, and any voltage signal that can slightly affect the shape of the waveform of the power carrier signal transmitted by the original power line and does not affect the normal function of the original power carrier signal may be used as the identification signal in the embodiment of the present application.
S102, the data acquisition unit receives a first PLC electric meter identification sent by the first PLC electric meter.
The data acquisition unit sends the power line carrier signal who carries identification signal through the power line, and all PLC ammeters in this platform district can all receive. Because the PLC electric meter sending electric meter identifications are mutually independent, different PLC electric meters are not influenced. The embodiment of the application takes any one of the PLC electric meters as an example, and the first PLC electric meter in the area is assumed to receive the power carrier signal sent by the data acquisition unit, and after the first PLC electric meter identifies the identification signal in the power carrier signal, the PLC electric meter is added into the PLC network of the data acquisition unit, and the identification of the first PLC electric meter is sent to the data acquisition unit. Wherein, the first PLC electric meter is identified as a first meter number or a first Media Access Control (MAC) address. The table number and the MAC address of different PLC ammeter are inequality, and first PLC ammeter sign is used for the first PLC ammeter of unique identification. The first table number and the first MAC address of the first PLC ammeter are in one-to-one correspondence, and when the first PLC ammeter file is established, the first MAC address is needed to be used for establishing communication between the first PLC ammeter and the data acquisition unit. In the embodiment of the application, if the first PLC electric meter is identified as the first table number, the corresponding relation between the table number and the MAC address of the first PLC electric meter are required to be obtained by the first table number. If the first PLC electric meter identification is the first MAC address, the first MAC address can be directly used for establishing communication between the first PLC electric meter and the data acquisition unit.
It should be noted that, the first PLC electric meter is not particularly limited to a certain PLC electric meter, but is any PLC electric meter located in the same distribution area as the data acquisition unit. Because different PLC ammeter probably has factors such as communication line delay, consequently the ammeter sign that all PLC ammeter sent can not received by data acquisition unit at the very first time either.
S103, the data acquisition unit sends the first PLC electric meter identification to a main station.
In S102, it is pointed out that the data acquisition unit cannot receive the meter identifications transmitted by all PLC meters at the first time due to problems such as communication line delay. Therefore, a receiving time window is preset, and the data acquisition unit sends the received PLC electric meter identification to the master station in the receiving time window. The initial time of the receiving time window is the time when the data acquisition unit sends out the identification signal, and the receiving time window is a preset time length. Because the number of the PLC electric meters is limited, the preset time length can be set to ensure that all the PLC electric meters in the distribution room where the data acquisition unit is located finish the sending of the PLC electric meter identifications. And when all the PLC electric meters finish sending the electric meter identifications, indicating that the PLC network of the data acquisition unit tends to a stable state. In the embodiment of the present application, the predetermined time (the receiving time window) may be set according to a time required for the PLC network to be stable in the history, for example, a maximum time required for the PLC network to be stable is taken as the predetermined time.
Optionally, the data acquisition unit receives, in the receiving time window, the PLC electric meter identifiers sent by the respective PLC electric meters, where the PLC electric meter identifiers include the first PLC electric meter identifier mentioned above. And after the receiving time window is finished, the data acquisition unit sends all the received PLC electric meter identifications to the master station.
Further, the data acquisition unit can transmit all the received PLC electric meter identifications to the master station in a white list mode. And each PLC electric meter identification is used as a record in the white list, and the meter number or MAC address of the PLC electric meter corresponding to each record is unique.
Optionally, the data acquisition unit receives the PLC electric meter identifiers sent by each PLC electric meter within a receiving time window, and sends the received PLC electric meter identifiers to the master station in batches. For example, the station area of the data acquisition unit has 20 PLC electric meters, and when the data acquisition unit receives the electric meter identifiers sent by 5 PLC electric meters, the data acquisition unit sends the received 5 PLC electric meter identifiers to the master station, and then sends the received 5 PLC electric meter identifiers in sequence according to 5 batches until the receiving time window is finished. If the data acquisition unit is 19 PLC ammeters in the distribution area, because the ammeter identification sent by 4 PLC ammeters can be received finally, because the number of the received ammeter identifications is less than 5 at the moment, the data acquisition unit can possibly enter a waiting state and cannot be sent to the main station, but after the receiving time window is finished, even if the number of the received ammeter identifications is less than 5, the data acquisition unit can also be sent to the main station.
The number of the PLC electric meters in the local area and the number of the batch sending electric meter identifications are only illustrative examples, and the batch sending electric meter identifications may be sent to the master station once each time one PLC electric meter identification is received. The receiving time window can also be divided into a plurality of sub-time periods, and after one sub-time period is finished, no matter a plurality of PLC electric meter identifications are received, the PLC electric meter identifications are sent to the main station.
In the embodiment of the application, no matter the electric meters are sent in batches according to the preset quantity or in batches according to the preset time period, the white list can be generated according to the received electric meter identifications, and the white list is sent to the master station. When the received electric meter identifications are transmitted to the main station in batches, a plurality of white list lists exist, and the PLC electric meter identifications in the plurality of white list lists indicate all the accessed PLC electric meters in the distribution area where the data acquisition unit is located.
And S104, the data acquisition unit receives a first electric meter file corresponding to the first PLC electric meter identification sent by the main station.
After the data acquisition unit sends the PLC ammeter sign received in the receiving time window to the main station, the main station sends the ammeter archives of each corresponding PLC ammeter to the data acquisition unit according to the received PLC ammeter sign. The data acquisition unit stores the received ammeter archives to complete the establishment of the PLC ammeter archives.
When the master station receives a first PLC electric meter identification sent by the data acquisition unit, the master station sends a corresponding first electric meter file to the data acquisition unit according to the meter number or the MAC address of the first PLC electric meter identification. The first ammeter file comprises information such as a first MAC address, a protocol type, ammeter single-phase and three-phase attributes and an ammeter channel type corresponding to the first PLC ammeter. And the data acquisition unit stores the first ammeter file to complete the establishment of the ammeter file of the first PLC ammeter.
Optionally, after the PLC electric meter archive is established, the correctness of the PLC electric meter archive also needs to be verified. Specifically, the PLC network of the data acquisition unit is disassembled, the PLC electric meter can periodically send a network access request, the data acquisition unit detects the network access request sent by the PLC electric meter, and if the corresponding PLC electric meter identification is in the established PLC electric meter file, the PLC electric meter is allowed to access the network.
After the PLC electric meter is connected to the network, the PLC electric meter actively reports an electric meter clock signal to the data acquisition unit, the data acquisition unit sends the received electric meter clock signal to the master station, and the master station marks the state of the PLC electric meter to be on line after receiving the electric meter clock signal. At the moment, end-to-end debugging is completed, and the established PLC electric meter file is determined to be correct.
According to the embodiment of the application, before the PLC electric meter file is established, the state of the PLC electric meter is not in network access, and therefore the PLC electric meter without crosstalk exists. In a possible implementation, if the data acquisition unit finds that there is a PLC electric meter crosstalk access before establishing the PLC electric meter file, the PLC network of the data acquisition unit needs to be disassembled, so that all PLC electric meters do not access the network, and then the establishment of the PLC electric meter file is performed according to the method of S101 to S104, which is not described in detail again.
According to the method for establishing the file for the electric meters, the PLC electric meters and the data acquisition unit in the same power station area are connected through the power line, after the data acquisition unit sends the identification signal through the power line, the PLC electric meters capable of receiving the identification signal complete networking and send the electric meter identification to the data acquisition unit, the accuracy of the PLC electric meter file established according to the electric meter identification received by the data acquisition unit is guaranteed, then the main station can mount the PLC electric meters below the correct data acquisition unit according to the PLC electric meter file, and each PLC electric meter can work normally.
Referring to fig. 6, another method for establishing a profile for an electricity meter is further provided in an embodiment of the present application, where the method includes:
s201, the PLC electric meter receives the identification signal sent by the data acquisition unit through the power line.
The PLC ammeter receives the power line carrier signal sent by the data acquisition unit through the power line, and the power line carrier signal carries an identification signal. And then, the PLC electric meter analyzes the power carrier signal. If the PLC electric meter detects the identification signal in the power carrier signal, the PLC electric meter and the data acquisition unit sending the identification signal are in the same region, and the identification signal indicates that the PLC electric meter is connected to the network.
As an exemplary identification signal given in the above embodiment, the power carrier signal is a sinusoidal power carrier signal, the identification signal is a zero-crossing disturbance signal, and the zero-crossing disturbance signal is a disturbance voltage signal that is opposite to the voltage of the sinusoidal power carrier signal in a tiny time period, for example, 1 microsecond or 2 microseconds, before and after each zero crossing point of the power carrier signal. Because the voltage of the power carrier signal carrying the zero-crossing disturbing signal in the micro time period before and after the zero-crossing point is 0, after the PLC electric meter receives the power carrier signal, the received power carrier signal is compared with the power carrier signal originally sent by the power system, the amplitude of the voltage signal before and after the zero-crossing point of the received power carrier signal is detected to be 0, and the identification signal in the received power carrier signal is recovered according to the power carrier signal originally sent by the power system to obtain the zero-crossing disturbing signal. Once the detection module in the PLC electric meter detects the zero-crossing disturbance signal, the PLC electric meter is indicated to be connected to the network.
And S202, adding the PLC electric meter into the PLC network of the data acquisition unit according to the identification signal, and sending the electric meter identification of the PLC electric meter to the data acquisition unit.
And after the PLC electric meter detects the identification signal, network access operation is executed, and the PLC electric meter is added into the PLC network of the data acquisition unit. And after the network access is finished, the state identifier of the PLC electric meter is changed from the network access request to the network access already. And the PLC electric meter after being connected to the network starts to send the electric meter identification to the data acquisition unit.
The PLC electric meter identification is a meter number or MAC address of the PLC electric meter. The corresponding table number of different PLC ammeter and MAC address are inequality, and a PLC ammeter sign is only used for only identifying a corresponding PLC ammeter.
Due to problems such as communication line delay in the power system, the PLC electric meters may receive the identification signals transmitted by the data acquisition units at different times. Therefore, in this embodiment, a sending time window is preset, the starting time of the sending time window is the time when the PLC electric meter in the local area receives the identification signal, and the sending time window is a predetermined time length. As long as the PLC electric meter in the region works normally, the PLC electric meter can receive the identification signal sent by the data acquisition unit, so that the longest delay time can be used as the preset time according to the delay time of the PLC electric meter in the history record for receiving the signal.
According to the method for establishing the archives by the electric meters, the PLC electric meters and the data acquisition units in the same power area are connected through the power lines, the PLC electric meters trigger the PLC network added into the data acquisition units after receiving the identification signals sent by the data acquisition units through the power lines, then the electric meter identifications are sent to the data acquisition units, and the PLC electric meters corresponding to the electric meter identifications received by the data acquisition units are guaranteed to be in the same power area.
In correspondence with the method shown in fig. 2, the embodiment of the present application further provides an apparatus 300 for establishing a profile for an electric meter, referring to fig. 7, the apparatus 300 includes: a first sending module 301, a first receiving module 302, a second sending module 303 and a second receiving module 304.
The first sending module 301 is configured to send an identification signal by the data acquisition unit through the power line, where the identification signal is used to indicate that each PLC electric meter in the distribution area where the data acquisition unit is located accesses the network. The embodiment of the application provides an illustrative example, where the identification signal is a zero-crossing disturbance signal, and the zero-crossing disturbance signal is a disturbance voltage signal which is opposite to the voltage of the sinusoidal power carrier signal and is a small time period before and after each zero crossing point of the power carrier signal, for example, 1 microsecond or 2 microseconds.
The first receiving module 302 is configured to receive, by the data acquisition unit, a first PLC electric meter identifier sent by the first PLC electric meter. The first PLC electric meter identification is a meter number or an MAC address of the first PLC electric meter. The corresponding table number of different PLC ammeter and MAC address are inequality, and a PLC ammeter sign is used for the first PLC ammeter of unique identification. Wherein, first PLC ammeter is any PLC ammeter in the district that data acquisition unit belongs to.
And the second sending module 303 is configured to send the first PLC electric meter identifier to the master station by the data acquisition unit.
The second sending module 303 in this embodiment includes: and the sending unit is used for sending all the PLC electric meter identifications received in the receiving time window to the master station by the data acquisition unit, the all the PLC electric meter identifications comprise first PLC electric meter identifications, the starting time of the receiving time window is the time when the data acquisition unit sends out the identification signal, and the receiving time window is a preset time length. Because the number of the PLC electric meters is limited, the preset time length can be set to ensure that all the PLC electric meters in the distribution room where the data acquisition unit is located finish the sending of the PLC electric meter identifications. And when all the PLC electric meters finish sending the electric meter identifications, indicating that the PLC network of the data acquisition unit tends to a stable state. In the embodiment of the present application, the predetermined time (the receiving time window) may be set according to a time required for the PLC network to be stable in the history, for example, a maximum time required for the PLC network to be stable is taken as the predetermined time.
Optionally, the sending unit includes: and the first sending subunit is used for sending all the PLC electric meter identifications to the main station at one time after the data acquisition unit finishes the receiving time window.
Optionally, the sending unit includes: and the second sending subunit is used for sending all the PLC electric meter identifications to the master station in batches in the receiving time window by the data acquisition unit.
And a second receiving module 304, configured to receive, by the data acquisition unit, a first electric meter file corresponding to the first PLC electric meter identifier sent by the master station.
The data acquisition unit stores the received first ammeter archives to complete the establishment of the first PLC ammeter archives. The first ammeter archive comprises information such as a protocol type, ammeter single three-phase attributes and ammeter channel types corresponding to the first PLC ammeter.
The device that is used for the ammeter to establish archives that this application embodiment provided, after first sending module 301 sends identification signal through the power line, the PLC ammeter that can receive identification signal is netted and is sent the ammeter sign to the data acquisition unit, the accuracy of the PLC ammeter archives of establishing according to the ammeter sign that first receiving module 302 received has been guaranteed, and then main website can be according to PLC ammeter archives with below the PLC ammeter carries the exact data acquisition unit, guarantee that every PLC ammeter can all normally work.
In accordance with the method shown in fig. 6, another apparatus 400 for generating a profile for an electricity meter is provided.
Referring to fig. 8, the apparatus 400 includes: a receiving module 401 and a transmitting module 402.
And the receiving module 401 is used for the PLC electric meter to receive the identification signal sent by the data acquisition unit through the power line. The embodiment of the application provides an illustrative example, where the identification signal is a zero-crossing disturbance signal, and the zero-crossing disturbance signal is a disturbance voltage signal which is opposite to the voltage of the sinusoidal power carrier signal and is a small time period before and after each zero crossing point of the power carrier signal, for example, 1 microsecond or 2 microseconds.
And when the PLC electric meter detects the identification signal, the PLC electric meter and the data acquisition unit for sending the identification signal are in the same region, and the PLC electric meter is triggered to access the network.
And the sending module 402 is used for the PLC electric meter to add into the PLC network of the data acquisition unit according to the identification signal and send the electric meter identification of the PLC electric meter to the data acquisition unit.
In this embodiment, the sending module 402 includes: and the sending unit is used for sending the PLC electric meter identification to the data acquisition unit in a sending time window by the PLC electric meter, the starting time of the sending time window is the time when the PLC electric meter receives the identification signal, and the sending time window is a preset time length.
And taking the longest delay time as the preset time according to the delay time of the PLC electric meter receiving signals in the history record because the communication line in the power system possibly has delay.
The device that is used for the ammeter to establish archives that this embodiment provided, the PLC ammeter and the data acquisition unit in same district pass through the power line connection, receiving module 401 receives the identification signal back that the data acquisition unit sent through the power line, instructs the PLC ammeter to add the PLC network of data acquisition unit, and sending module 402 sends the ammeter sign to the data acquisition unit later, has guaranteed that the PLC ammeter that the ammeter sign that the data acquisition unit received corresponds all is with the district.
An embodiment of the present application further provides a data acquisition unit, and referring to fig. 9, the data acquisition unit 50 includes: PLC module 501, processor 502, memory 503, and communication interface 504.
The PLC module 501 is configured to send an identification signal through a power line;
the processor 502 is used for receiving a first PLC electric meter identification sent by a first PLC electric meter, sending the first PLC electric meter identification to a main station, and receiving a first electric meter file corresponding to the first PLC electric meter identification sent by the main station.
The memory 503 is used for storing the meter identification of the PLC meter and the meter file.
The processor 502 may be a general-purpose processor, such as a Central Processing Unit (CPU), a Network Processor (NP), or a combination of a CPU and an NP. The processor 502 may also be a Microprocessor (MCU). The processor 502 may also include hardware chips. The hardware chips may be Application Specific Integrated Circuits (ASICs), Programmable Logic Devices (PLDs), or a combination thereof. The PLD may be a Complex Programmable Logic Device (CPLD), a Field Programmable Gate Array (FPGA), or the like.
The PLC module 501, the processor 502, the memory 503, and the communication interface 504 may be connected to each other through a bus; the bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 9, but this does not indicate only one bus or one type of bus.
The PLC module 501 is also configured to communicate with a PLC electric meter in a PLC network.
The memory 503 may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
The data acquisition unit 50 may also include power supply components for providing power to the various components of the data acquisition unit. The power supply assembly may include a power management system, one or more power supplies.
The communication interface 504 is used for communication between the data acquisition unit 50 and the PLC electric meter, and between the data acquisition unit 50 and the master station. The communication interface 504 includes a wired communication interface and may also include a wireless communication interface. The wired communication interface comprises a PLC interface and also comprises an Ethernet interface. The wireless communication interface may be a WLAN interface, a cellular network communication interface, a combination thereof, or the like.
Correspondingly, this application still provides the embodiment of a PLC ammeter. Referring to fig. 10, the PLC electric meter 60 includes a PLC module 601, a processor 602, a memory 603, and a communication interface 604.
The PLC module 601 is used for receiving an identification signal sent by the data acquisition unit through a power line;
the processor 602 is configured to control the PLC electric meter to add to the PLC network of the data acquisition unit according to the identification signal, and send an electric meter identifier of the PLC electric meter to the data acquisition unit.
The memory 603 is used for storing the received identification signal and the meter identification of the PLC meter.
The processor 602 may be a general purpose processor, such as a CPU, NP, or a combination of CPU and NP. The processor 502 may also be a Microprocessor (MCU). The processor 502 may also include hardware chips. The hardware chips may be Application Specific Integrated Circuits (ASICs), Programmable Logic Devices (PLDs), or a combination thereof. The PLD may be a Complex Programmable Logic Device (CPLD), a Field Programmable Gate Array (FPGA), or the like.
The memory 603 may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
The PLC module 601, the processor 602, the memory 603, and the communication interface 604 may be connected to each other through a bus; the bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 10, but this is not intended to represent only one bus or type of bus.
Optionally, the PLC electric meter 60 may further include a power supply assembly for providing power to the various components of the data acquisition unit. The power supply assembly may include a power management system, one or more power supplies.
Optionally, the PLC electric meter 60 may further include an optical coupling component, where the optical coupling component detects an identification signal received by the PLC module 601, where the identification signal includes a zero-crossing disturbing signal.
Optionally, the PLC electric meter 60 may further include a debugging interface, where the debugging interface is a test maintenance interface of the PLC electric meter, and the relevant detection of the PLC electric meter, such as the test of accuracy and sensitivity of the PLC electric meter, and the maintenance of the built-in parameters of the PLC electric meter, may be completed through the debugging interface.
The communication interface 604 is used for communication between the PLC electric meter 60 and the data acquisition unit. The communication interface 604 includes a wired communication interface and may also include a wireless communication interface. The wired communication interface comprises a PLC interface and also comprises an Ethernet interface. The wireless communication interface may be a WLAN interface, a cellular network communication interface, a combination thereof, or the like.
Optionally, the PLC electric meter receives data such as the electricity consumption amount of the electric meter and the operation parameters of the electric meter through the communication interface 604, and those skilled in the art can clearly understand that the technology in the embodiment of the present application can be implemented by software plus a necessary general hardware platform after the received data is processed and then sent out through the communication interface 604. Based on such understanding, the technical solutions in the embodiments of the present application may be essentially implemented or portions thereof contributing to the prior art may be embodied in the form of a software product, which may be stored in a storage medium, such as a ROM/RAM, a magnetic disk, an optical disk, etc., and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a forwarding device, etc.) to execute the methods described in the embodiments or some portions thereof.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, as for the device, data acquisition unit and PLC meter embodiments, since they are substantially similar to the method embodiments, the description is relatively simple, and in relation to the description, reference may be made to some of the description of the method embodiments.
The above-described embodiments of the present application do not limit the scope of the present application.
Claims (14)
1. A method for establishing a profile for an electricity meter, the method comprising:
the method comprises the following steps that a data acquisition unit sends identification signals through a power line, wherein the identification signals are used for indicating each power line communication PLC electric meter in a distribution area where the data acquisition unit is located to access the network;
the data acquisition unit receives a first PLC electric meter identification sent by a first PLC electric meter, the first PLC electric meter is any one PLC electric meter in a distribution area where the data acquisition unit is located, and the first PLC electric meter identification is used for uniquely identifying the first PLC electric meter;
the data acquisition unit sends the first PLC electric meter identification to a master station;
and the data acquisition unit receives a first electric meter file corresponding to the first PLC electric meter identification sent by the main station.
2. The method of claim 1, wherein the data acquisition unit transmitting the first PLC meter identification to a master station comprises:
the data acquisition unit sends all PLC ammeter identifications received in the receiving time window to a main station, the first PLC ammeter identification is included in all the PLC ammeter identifications, the starting time of the receiving time window is the time when the data acquisition unit sends the identification signal, and the length of the receiving time window is preset time.
3. The method of claim 2, wherein the data acquisition unit transmitting all PLC meter identifications received within the receive time window to the master station comprises:
the data acquisition unit transmits all the PLC electric meter identifications to a master station at one time after the receiving time window is finished;
or,
and the data acquisition unit sends all the PLC electric meter identifications to a master station in batches in the receiving time window.
4. The method according to any one of claims 1 to 3,
the identification signal is a zero-crossing disturbance signal, and the zero-crossing disturbance signal is a disturbance voltage signal which is opposite to the power line sine wave voltage before and after each zero crossing point of the power line sine wave voltage.
5. A method for establishing a profile for an electricity meter, the method comprising:
the PLC electric meter receives the identification signal sent by the data acquisition unit through the power line;
and the PLC electric meter is added into the PLC network of the data acquisition unit according to the identification signal, and sends the electric meter identification of the PLC electric meter to the data acquisition unit.
6. The method of claim 5, wherein the PLC electric meter joining the networking of the data acquisition unit according to the identification signal and sending an electric meter identification of the PLC electric meter to the data acquisition unit comprises:
the PLC electric meter sends the PLC electric meter identification to the data acquisition unit in a sending time window, the starting time of the sending time window is the time when the PLC electric meter receives the identification signal, and the length of the sending time window is the preset time length.
7. The method of claim 5 or 6, wherein the identification signal is a zero-crossing disturbance signal, and the zero-crossing disturbance signal is a disturbance voltage signal that is opposite to the power line sine wave voltage before and after each zero-crossing point of the power line sine wave voltage.
8. An apparatus for establishing a profile for an electricity meter, the apparatus comprising:
the first sending module is used for sending an identification signal by the data acquisition unit through a power line, wherein the identification signal is used for indicating each power line communication PLC electric meter in a distribution area where the data acquisition unit is located to access the network;
the first receiving module is used for the data acquisition unit to receive a first PLC electric meter identification sent by a first PLC electric meter, the first PLC electric meter is any one PLC electric meter in a distribution area where the data acquisition unit is located, and the first PLC electric meter identification is used for uniquely identifying the first PLC electric meter;
the second sending module is used for sending the first PLC electric meter identification to the master station by the data acquisition unit;
and the second receiving module is used for receiving the first electric meter file corresponding to the first PLC electric meter identification sent by the main station by the data acquisition unit.
9. The apparatus of claim 8, wherein the second sending module comprises:
the transmitting unit is used for transmitting all PLC electric meter identifications received in the receiving time window to the master station by the data acquisition unit, the first PLC electric meter identification is included in all the PLC electric meter identifications, the starting time of the receiving time window is the time when the data acquisition unit sends the identification signal, and the length of the receiving time window is the preset time length.
10. The apparatus of claim 9, wherein the sending unit comprises:
the first sending subunit is used for sending all the PLC electric meter identifications to the master station once by the data acquisition unit after the receiving time window is finished;
or,
and the second sending subunit is used for sending all the PLC electric meter identifications to the master station in batches in the receiving time window by the data acquisition unit.
11. The apparatus according to any one of claims 8 to 10,
the identification signal is a zero-crossing disturbance signal, and the zero-crossing disturbance signal is a disturbance voltage signal which is opposite to the power line sine wave voltage before and after each zero crossing point of the power line sine wave voltage.
12. An apparatus for establishing a profile for an electricity meter, the apparatus comprising:
the receiving module is used for receiving the identification signal sent by the data acquisition unit through the power line by the PLC electric meter;
and the sending module is used for adding the PLC electric meter into the PLC network of the data acquisition unit according to the identification signal and sending the electric meter identification of the PLC electric meter to the data acquisition unit.
13. The apparatus of claim 12, wherein the sending module comprises:
and the sending unit is used for sending the PLC electric meter identification to the data acquisition unit in a sending time window, the starting time of the sending time window is the time when the PLC electric meter receives the identification signal, and the length of the sending time window is preset time.
14. The apparatus of claim 12 or 13, wherein the identification signal is a zero-crossing disturbance signal, and the zero-crossing disturbance signal is a disturbance voltage signal that is opposite to the power line sine wave voltage before and after each zero-crossing point of the power line sine wave voltage.
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