CN109212334B - Phase sequence identification equipment and method for electric energy meter - Google Patents
Phase sequence identification equipment and method for electric energy meter Download PDFInfo
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- CN109212334B CN109212334B CN201811133668.8A CN201811133668A CN109212334B CN 109212334 B CN109212334 B CN 109212334B CN 201811133668 A CN201811133668 A CN 201811133668A CN 109212334 B CN109212334 B CN 109212334B
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- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/18—Indicating phase sequence; Indicating synchronism
Abstract
The invention discloses phase sequence identification equipment and a method for an electric energy meter, wherein the phase sequence identification equipment for the electric energy meter is applied to an electricity utilization information acquisition system and comprises the following steps: the system comprises a main control module and a zero-crossing detection module connected with the main control module; the main control module is used for receiving a detection command which is sent by the collector and comprises zero-crossing point information of a power supply phase line where the collector is located and identity information of the electric energy meter, and sending the identity information of the electric energy meter to the zero-crossing detection module; the zero-crossing detection module is used for detecting zero-crossing point information of the electric energy meter corresponding to the identity information according to the received identity information of the electric energy meter and sending the zero-crossing point information to the main control module; the main control module is further used for comparing the received zero-crossing point information of the electric energy meter with the zero-crossing point information of the power supply phase line where the collector is located, and determining the phase sequence of the power supply phase line where the electric energy meter is located according to the comparison result. The phase sequence identification device of the electric energy meter is arranged between the collector and the electric energy meter, so that the problem that the collector identifies the phase sequence affiliation of all the electric energy meters hung downwards is solved.
Description
Technical Field
The invention relates to the technical field of communication, in particular to electric energy meter phase sequence identification equipment and method.
Background
With the rapid development of urbanization, the requirements of citizens on high-quality life are gradually improved, an important sign of smart grid construction is a power utilization information acquisition system, and the rapid expansion of the scale of a power grid and the large increase of metering equipment become the inevitable trend of power grid development.
In the electricity consumption information acquisition system, the concentrator is used for issuing an acquisition command to the collector, and the collector is used for receiving and recording the electricity consumption condition of the electric energy meter, realizing the acquisition of the data information of the electric quantity and uploading the data to the concentrator. For the collector, a plurality of electric energy meters are generally hung down, different electric energy meters can be connected to different power supply phase lines, and the electric energy meters do not have a phase sequence identification function, so that the collector cannot directly solve the problem of phase sequence attribution of the hung-down electric energy meters at present.
Disclosure of Invention
In view of the foregoing problems, an object of the embodiments of the present invention is to provide an apparatus and a method for identifying a phase sequence of an electric energy meter, so as to solve the deficiencies of the prior art.
According to an embodiment of the present invention, an electric energy meter phase sequence identification device is provided, which is applied to an electric energy information acquisition system, the electric energy information acquisition system further includes a concentrator, a collector, and a plurality of electric energy meters, the concentrator is connected to the collector, the collector is connected to the electric energy meter phase sequence identification device, the electric energy meter phase sequence identification device is connected to a plurality of electric energy meters in a station area where the collector is located, the collector determines a phase sequence of a power supply phase line where the collector is located according to zero crossing point information of the power supply phase line where the concentrator is located and the zero crossing point information of the collector, and the electric energy meter phase sequence identification device includes:
the device comprises a main control module and a zero-crossing detection module connected with the main control module;
the main control module is used for receiving a detection command which is sent by the collector and comprises zero-crossing point information of a power supply phase line where the collector is located and identity information of the electric energy meter and sending the identity information of the electric energy meter to the zero-crossing detection module;
the zero-crossing detection module is used for detecting zero-crossing point information of the electric energy meter corresponding to the identity information according to the received identity information of the electric energy meter and sending the zero-crossing point information to the main control module;
the main control module is further configured to compare the received zero-crossing point information of the electric energy meter with the zero-crossing point information of the power supply phase line where the collector is located, and determine the phase sequence of the power supply phase line where the electric energy meter is located according to the comparison result.
In the phase sequence identification device for the electric energy meter, the concentrator sends zero-crossing point information of a power supply phase line where the concentrator is located to the collector;
and the collector compares the received zero-crossing information of the power supply phase line where the concentrator is located with the self zero-crossing information, and determines the phase sequence of the power supply phase line where the collector is located according to the comparison result.
In the above electric energy meter phase sequence identification device, after the phase sequence of the electric energy meter is determined, the main control module is further configured to send the phase sequence to the collector.
In the above phase sequence identification device for an electric energy meter, before identifying the phase sequence of the electric energy meter, time synchronization is performed among the concentrator, the collector, the phase sequence identification device for an electric energy meter, and the plurality of electric energy meters.
In the phase sequence identification device of the electric energy meter, the phase sequence identification device further comprises a power module:
and the power supply module is used for supplying power to the electric energy meter phase sequence identification equipment.
In the phase sequence identification device of the electric energy meter, the power module comprises a charging interface and an AC/DC conversion unit.
In the above phase sequence identification device for an electric energy meter, the device further comprises a communication module connected to the main control module:
and the communication module is used for realizing data transmission between the electric energy meter phase sequence identification equipment and other equipment in the power utilization information acquisition system.
In the phase sequence identification device for the electric energy meter, the communication module comprises a power line broadband carrier communication unit, a micropower wireless communication unit and an RS485 communication unit.
In the phase sequence identification device for the electric energy meter, the concentrator communicates with the collector through a power line broadband carrier communication unit, a micropower wireless communication unit or an RS485 communication unit;
the collector is communicated with the electric energy meter phase sequence identification device through a power line broadband carrier communication unit, a micro-power wireless communication unit or an RS485 communication unit.
In the phase sequence identification device of the electric energy meter, the phase sequence identification device of the electric energy meter communicates with the electric energy meter through an RS485 communication unit.
In the above phase sequence identification device for an electric energy meter, when the phase sequence identification device for an electric energy meter communicates with a plurality of electric energy meters, the phase sequence identification device further includes switches corresponding to the electric energy meters one to one:
and the master control module is also used for controlling the corresponding switch of the electric energy meter to be switched on and controlling all the other switches to be switched off according to the electric energy meter identity information sent by the collector.
In another embodiment of the present invention, an electric energy meter phase sequence identification method is provided, which is applied to an electric energy information acquisition system, the electric energy information acquisition system further includes a concentrator, a collector, and a plurality of electric energy meters, the concentrator is connected to the collector, the collector is connected to an electric energy meter phase sequence identification device, the electric energy meter phase sequence identification device is connected to a plurality of electric energy meters in a station area where the collector is located, the collector determines a phase sequence of a power supply phase line where the collector is located according to zero crossing point information of the power supply phase line where the concentrator is located and zero crossing point information of the collector, and the electric energy meter phase sequence identification method includes:
receiving a detection command which is sent by the collector and comprises zero crossing point information of a power supply phase line where the collector is located and identity information of the electric energy meter;
detecting zero-crossing point information of the electric energy meter corresponding to the identity information according to the identity information of the electric energy meter;
and comparing the zero-crossing information of the electric energy meter with the zero-crossing information of the power supply phase line where the collector is located, and determining the phase sequence of the power supply phase line where the electric energy meter is located according to the comparison result.
In another embodiment of the present invention, a computer-readable storage medium is provided, in which the electric energy meter phase sequence identification method is stored.
The phase sequence identification device and method for the electric energy meter provided by the embodiment of the invention at least provide the following technical effects: the phase sequence identification device is arranged between the collector and the plurality of electric energy meters hung below the collector, the phase sequence attribution information of the plurality of electric energy meters hung below the collector is managed in a centralized mode, according to the phase sequence information of the collector, the function of identifying the phase sequence of the plurality of electric energy meters hung below the collector can be realized at the node of the phase sequence identification device of the electric energy meters, the problem that the phase sequence attribution of all the electric energy meters hung below the collector cannot be identified is solved, the phase sequence identification device has the advantages of being reliable in communication, simple and convenient to connect, safe in field operation and the like, and is suitable for application occasions needing fine management of power utilization information.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings required to be used in the embodiments will be briefly described below, and it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope of the present invention.
Fig. 1 shows a schematic structural diagram of an electric energy meter phase sequence identification device according to a first embodiment of the present invention.
Fig. 2 is a schematic diagram of a zero-crossing detection circuit according to an embodiment of the present invention.
Fig. 3 is a schematic diagram illustrating a zero-crossing detection waveform according to an embodiment of the present invention.
Fig. 4 is a schematic diagram illustrating a phase sequence identification waveform according to an embodiment of the present invention.
Fig. 5 is a schematic structural diagram illustrating an electric energy meter phase sequence identification device according to a second embodiment of the present invention.
Fig. 6 shows a schematic flow chart of a method for identifying a phase sequence of an electric energy meter according to an embodiment of the present invention.
Description of the main element symbols:
as in fig. 10-concentrator; 20-a collector; 30-electric energy meter phase sequence identification equipment; 31-a master control module; 32-a zero crossing detection module; 33-a switch; 34-a communication module; 35-a power supply module; 40-electric energy meter.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
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 invention belongs. The terminology used herein in the description of the multi-scale calibration plate is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The following detailed description of embodiments of the invention refers to the accompanying drawings.
Example 1
Fig. 1 shows a schematic structural diagram of an electric energy meter phase sequence identification device according to a first embodiment of the present invention. The electric energy meter phase sequence identification device 30 is applied to an electricity utilization information acquisition system, and the electricity utilization information acquisition system comprises a concentrator 10, a collector 20, an electric energy meter phase sequence identification device 30 and a plurality of electric energy meters 40.
The concentrator 10 can be connected with the collector 20 through communication modes such as a power line broadband carrier, a micropower wireless or an RS485 bus, the collector 20 can be connected with the electric energy meter phase sequence identification device 30 through communication modes such as a power line broadband carrier, a micropower wireless or an RS485 bus, and the electric energy meter phase sequence identification device 30 is connected with the plurality of electric energy meters 40 in the station area through the RS485 bus.
The concentrator 10 and the collector 20 may be disposed on any phase power line of the transformer area. For example, a transformer for a transformer station having A, B and C three-phase power lines, concentrator 10 may be placed on the a-phase power line, and harvester 20 may be placed on the B-phase power line.
The plurality of electric energy meters 40 may be disposed on the power lines of the phases of the transformer, for example, the plurality of electric energy meters 40 may be hung down on the a-phase power line, the plurality of electric energy meters 40 may be hung down on the B-phase power line, and the plurality of electric energy meters 40 may be hung down on the C-phase power line.
In this embodiment, compared with the power line narrowband carrier, the power line broadband carrier has a faster network access speed, and the more stable the propagation environment, the higher the data rate that can be carried by the channel.
The micropower wireless network is a self-organizing network, and under a certain condition, the more nodes are, the more routing paths can be selected, and the higher the network reliability is.
The concentrator 10 and the collector 20 have a zero-crossing detection function, and can detect zero-crossing point information of a power supply phase line where the concentrator and the collector are located.
The collector 20 determines the phase sequence of the power supply phase line according to the zero crossing point information of the power supply phase line where the concentrator 10 is located and the zero crossing point information of the collector.
The concentrator 10 sends the zero-crossing point information of the power supply phase line where the concentrator is located to the collector 20, the collector 20 compares the received zero-crossing point information of the power supply phase line where the concentrator 10 is located with the zero-crossing point information of the collector, and the phase sequence of the power supply phase line where the collector is located is determined according to the comparison result.
Wherein, the comparison result includes the leading, the same and the lagging situations.
For example, the concentrator 10 is disposed on the a-phase power line of the station transformer, the zero-crossing time of the phase line is 14:20:37.0000, and the concentrator 10 sends the zero-crossing time of the a-phase power line 14:20:37.0000 to the collector 20.
If the self zero-crossing time acquired by the acquirer 20 is 14:20:37.00667, the received zero-crossing time transmitted by the concentrator 10 is 14:20:37.0000, the acquirer 20 compares the self zero-crossing information with the zero-crossing information of the concentrator 10 to obtain that the self zero-crossing time lags behind 6.67ms compared with the zero-crossing time of the concentrator 10, and if the concentrator 10 is arranged on an a-phase power line of the transformer area, the phase sequence of the power supply phase line where the acquirer 20 is located is a B-phase power line. Of course, if the zero-crossing time of the collector 20 is the same as the zero-crossing time of the concentrator 10, the power phase line on which the collector 20 and the concentrator 10 are located is the same phase power line. The electric energy meter phase sequence identification device 30 includes a main control module 31 and a zero-crossing detection module 32.
The main control module 31 is electrically connected to the zero-crossing detection module 32.
Before identifying the phase sequence of the electric energy meter 40, the concentrator 10, the collector 20, the electric energy meter phase sequence identification device 30, and the plurality of electric energy meters 40 are time-synchronized.
In this embodiment, when the concentrator 10 sends zero-crossing point information of a power supply phase line where the concentrator is located to the acquirer 20, transmission delay of a signal containing the zero-crossing point information in a channel between the concentrator 10 and the acquirer 20 can be measured, signal receiving time information of the acquirer 20 is obtained by adding the transmission time of the concentrator 10 to the transmission delay, or a time difference between signal sending of the concentrator 10 and signal receiving of the acquirer 20 is measured, and then time information of the acquirer 20 is correspondingly adjusted, so that time synchronization between the concentrator 10 and the acquirer 20 is achieved; when the collector 20 sends signals to all the electric energy meter phase sequence identification devices 30, including sending signals, and the electric energy meter phase sequence identification devices 30 send signals to the corresponding electric energy meters 40, the time synchronization between the collector 20 and all the electric energy meter phase sequence identification devices 30 is also realized through the synchronization method.
In some other embodiments, the concentrator 10, the collector 20, the electric energy meter phase sequence identification device 30 and the plurality of electric energy meters 40 may be time-synchronized by other synchronization methods.
The main control module 31 receives the detection command sent by the collector 20. The detection command includes zero-crossing point information of the power supply phase line where the collector 20 is located, identity information of the electric energy meter 40 to be subjected to phase sequence identification, and the like.
For example, when the collector 20 sends a detection command to the electric energy meter phase sequence identification device 30, a data message of the detection command sent by the collector also includes identity information or address information of the electric energy meter phase sequence identification device 30.
In this embodiment, the zero-crossing point information may be time information of a zero-crossing point. In some other embodiments, the zero-crossing point information may also be phase angle information of a zero-crossing point, and the like.
The identity information may be a factory ID of the electric energy meter 40 or address information in the power consumption information acquisition system in which the electric energy meter 40 is located.
After receiving the detection command, the main control module 31 is further configured to analyze the detection command, identify zero-crossing point information of the power supply phase line where the collector 20 is located and identity information of the electric energy meter 40 to be subjected to phase sequence identification, which are included in the detection command, store the zero-crossing point information of the power supply phase line where the collector 20 is located, and send the identity information of the electric energy meter 40 to be subjected to phase sequence identification to the zero-crossing detection module 32.
For example, if the collector 20 is disposed on the B-phase power line of the transformer, the zero-crossing time of the B-phase power line where the collector 20 is located is 14:20:38, the factory ID of the electric energy meter 40 to be subjected to phase sequence identification is 20151016am32, the zero-crossing time of the B-phase power line where the collector 20 is located is 14:20:38 for subsequent comparison, and the factory ID of the electric energy meter 40 to be subjected to phase sequence identification is 20151016 32, which is sent to the zero-crossing detection module am 32.
In addition, the collector 20 can determine its own phase sequence according to the zero-crossing point information of the power supply phase line where the collector is located and the zero-crossing point information of the power supply phase line where the concentrator 10 is located. The zero-crossing detection module 32 receives the identity information of the electric energy meter 40 sent by the main control module 31, detects zero-crossing point information of the electric energy meter 40 corresponding to the identity information, and sends the zero-crossing point information to the main control module 31.
For example, fig. 2 is a schematic diagram of a zero-crossing detection circuit according to an embodiment of the present invention. In the zero-crossing detection circuit, a power frequency signal at a commercial power end of each phase of power line is rectified and then transmitted to the front end of an optocoupler U101, the anode of the rear end of the optocoupler U101 is connected with a high potential, the cathode of the optocoupler U101 is connected with a main control module 31, and the optocoupler U101 is used for generating jump when the power frequency signal at the commercial power end reaches a zero crossing point and outputting a pulse signal to the main control module 31 through the cathode of the optocoupler U101.
Fig. 3 is a schematic diagram of a zero-crossing detection waveform according to an embodiment of the present invention. If the power frequency signal at the commercial end of each phase power line is a 220V, 50Hz sine wave, as shown by the waveform P1, the cycle of the sine wave a is 1/50 s-20 ms, and the half cycle with a phase angle of 180 °, i.e., 10 ms. The output waveform of the sine wave P1 after rectification is a sine wave shown in a waveform P2, the waveform P2 outputs a pulse signal shown in a waveform P3 after passing through an optical coupler U101, and the waveform P3 is a zero-crossing point trigger pulse.
The main control module 31 compares the received zero-crossing point information of the electric energy meter 40 with the zero-crossing point information sent by the collector 20, and determines the phase sequence of the power supply phase line where the electric energy meter 40 is located according to the comparison result.
For example, fig. 4 is a schematic diagram illustrating a phase sequence identification waveform according to an embodiment of the present invention. On a time-voltage coordinate, voltage starts from zero along with time, rises to a positive peak value, then falls to a zero point, then continues to fall to a negative peak value, then rises to the zero point, continues to a next cycle, and is a zero-crossing point when reaching the zero point, and in a sine cycle, a 220V 50Hz sine wave Q1 at the commercial end of each phase of power line has two zero-crossing points.
In this embodiment, the zero-crossing points are all zero-crossing points generated by a waveform from low to high, and of course, in some other embodiments, the zero-crossing points may also be zero-crossing points generated by a waveform from high to low.
Since the three-phase power is a set of three-phase alternating currents with equal amplitude, equal frequency and 120 ° phase angle difference, the sine wave Q2 lags behind the sine wave Q1 by 120 ° phase angle, and in the 220V and 50Hz sine wave, the time information corresponding to the 120 ° phase angle is 10/180 × 120-6.67 ms. In fig. 4, it is assumed that the waveform Q1 is a sine wave of the phase line where the collector 20 is located, the waveform Q2 is a sine wave of the phase line where the electric energy meter 40 is located, and if the effective zero-crossing time of the sine wave Q1 is t1, 14:20:38, and the effective zero-crossing time of the sine wave Q2 is t2, 14:20: 38.00667. Then, it is known that the effective zero crossing time of sine wave Q2 lags the effective zero crossing time of sine wave Q1 by 6.67 ms. At this time, if the collector 20 is located on the B-phase power line of the transformer, the electric energy meter 40 is located on the C-phase power line of the transformer.
If the zero-crossing time of the detected electric energy meter 40 is advanced by 6.67ms relative to the zero-crossing time of the phase line on which the collector 20 is located, and if the collector 20 is located on the B-phase power line of the transformer area, the detected electric energy meter 40 is located on the a-phase power line of the transformer area.
If the detected zero-crossing time of the electric energy meter 40 is the same as the zero-crossing time of the phase line where the collector 20 is located, and if the collector 20 is located on the B-phase power line of the transformer area, the detected electric energy meter 40 is located on the B-phase power line of the transformer area.
After obtaining the phase sequence of the corresponding electric energy meter 40, the main control module 31 sends the phase sequence to the collector 20, so as to identify the phase sequence affiliation of each electric energy meter 40 connected to the node of the collector 20.
Example 2
Fig. 5 is a schematic structural diagram illustrating an electric energy meter phase sequence identification device according to a second embodiment of the present invention. Compared with embodiment 1, the electric energy meter phase sequence identification device 30 further includes a switch 33, a communication module 34, and a power module 35, which are in one-to-one correspondence with the electric energy meters 40.
The zero-cross detection module 32, the communication module 34, and the power module 35 are electrically connected to the main control module 31.
One end of each of the switches 33 is connected to the zero-cross detection module 32, and the other end of each of the switches 33 is connected to the corresponding one-to-one of the electric energy meters 40.
After determining the phase sequence of the power supply phase line, the collector 20 sends the zero crossing point information of the power supply phase line and the identity information of a certain electric energy meter 40 hung below the power supply phase line to the main control module 31.
The main control module 31 controls the switches 33 of the electric energy meters 40 corresponding to the identity information to be switched on according to the identity information of the electric energy meters 40 which are sent by the collector 20 and perform phase sequence identification, controls the switches 33 corresponding to all the other electric energy meters 40 to be switched off, and sends a detection command to the zero-crossing detection module 32, and the zero-crossing detection module 32 detects zero-crossing point information of the corresponding electric energy meters 40 according to the detection command.
The correspondence between the electric energy meter 40 and the switch 33 can be described by a table.
| Electric energy meter | Switch with a switch body |
| EEM001 | S001 |
| EEM002 | S002 |
| …… | …… |
| EEM00N | S00N |
In the above table, the switch corresponding to the electric energy meter EEM001 is numbered S001, the switch corresponding to the electric energy meter EEM002 is numbered S002, the switch corresponding to the electric energy meter EEM00N is numbered S00N, and the like.
When the identity information sent by the collector 20 and hung below one electric energy meter 40 is the EEM001, the main control module 31 controls the switch S001 corresponding to the EEM001 to be switched on according to the identity information, switches S002 to S00N are all switched off, and sends a detection command to the zero-crossing detection module 32, and the zero-crossing detection module 32 detects zero-crossing point information of a power supply phase line corresponding to the electric energy meter EEM 001; when the identity information sent by the collector 20 and hung below one electric energy meter 40 is EEM002, the main control module 31 controls the switch S002 corresponding to the EEM002 to be switched on according to the identity information, switches S001 and S003-S00N are all switched off, and sends a detection command to the zero-crossing detection module 32, and the zero-crossing detection module 32 detects the zero-crossing point information of the power supply phase line corresponding to the electric energy meter EEM 002; when the identity information sent by the collector 20 and hung below one electric energy meter 40 is EEM00N, the main control module 31 controls the switch S00N corresponding to the EEM00N to be switched on according to the identity information, switches S001 to S00N-1 are all switched off, a detection command is sent to the zero-crossing detection module 32, and the zero-crossing detection module 32 detects zero-crossing point information of a power supply phase line corresponding to the electric energy meter EEM 00N.
Wherein N is an integer greater than 1.
The zero-crossing detection module 32 detects zero-crossing point information of the corresponding electric energy meter 40 and sends the zero-crossing point information to the main control module 31.
The main control module 31 compares the received zero-crossing point information of the electric energy meter 40 with the zero-crossing point information of the power supply phase line where the collector 20 is located, and determines the phase sequence of the power supply phase line of the electric energy meter 40 according to the comparison result.
The comparison result includes the leading, the same and the lagging situations.
The communication module 34 is configured to implement data transmission between the electric energy meter phase sequence identification device 30 and other devices in the power consumption information acquisition system.
The communication module 34 comprises a power line broadband carrier communication unit, a micro-power wireless communication unit, an RS485 communication unit and the like.
The collector 20 can be connected with the electric energy meter phase sequence identification device 30 through communication modes such as a power line broadband carrier, a micropower wireless or RS485 bus, and the electric energy meter phase sequence identification device 30 is connected with the plurality of electric energy meters 40 in the station area through the RS485 bus.
After determining the phase sequence of the corresponding electric energy meter 40, the main control module 31 is further configured to send the phase sequence to the collector 20, so that the node where the collector 20 is located can identify the phase sequence attribution information of all the electric energy meters 40 hung thereunder.
The power module 35 is configured to supply power to the electric energy meter phase sequence identification device 30.
The power module 35 includes a charging interface for receiving alternating current transmitted by a power supply line, and an AC/DC conversion unit for converting the alternating current received from the charging interface into direct current of a specification required by the electric energy meter phase sequence identification device 30, so as to provide stable direct current electric energy for all modules of the electric energy meter phase sequence identification device 30.
Example 3
Fig. 6 shows a schematic flow chart of a method for identifying a phase sequence of an electric energy meter according to an embodiment of the present invention.
The electric energy meter phase sequence identification method is applied to an electric energy information acquisition system, the electric energy information acquisition system further comprises a concentrator, a collector and a plurality of electric energy meters, the concentrator is connected with the collector, the collector is connected with electric energy meter phase sequence identification equipment, the electric energy meter phase sequence identification equipment is connected with the plurality of electric energy meters in a station area where the collector is located, the collector determines the phase sequence of a power supply phase line where the collector is located according to zero crossing point information of the power supply phase line where the concentrator is located and the zero crossing point information of the collector, and the electric energy meter phase sequence identification method comprises the following steps:
and step S110, receiving a detection command which is sent by the collector and comprises zero-crossing point information of the power supply phase line where the collector is located and identity information of the electric energy meter.
And step S120, detecting zero-crossing point information of the electric energy meter corresponding to the identity information according to the identity information of the electric energy meter.
Step S130, comparing the zero crossing point information of the electric energy meter with the zero crossing point information of the power supply phase line where the collector is located, and determining the phase sequence of the power supply phase line where the electric energy meter is located according to the comparison result.
The invention further provides a computer-readable storage medium, and the phase sequence identification method of the electric energy meter is stored in the computer-readable storage medium.
Therefore, the invention provides phase sequence identification equipment and a method for an electric energy meter, wherein the phase sequence identification equipment for the electric energy meter is arranged between a collector and a plurality of electric energy meters hung below the collector, the phase sequence attribution information of the plurality of electric energy meters hung below the collector is managed in a centralized manner, and according to the phase sequence information of the collector, the electric energy meter phase sequence identification equipment node can realize the function of identifying the phase sequence of the lower-hanging electric energy meter, solves the problem that the phase sequence attribution of all the lower-hanging electric energy meters can not be identified by the collector, has the characteristics of reliable communication, simple and convenient connection, safe field operation and the like, can be suitable for application occasions needing to carry out fine management on power utilization information, is convenient for a power grid master station to comprehensively master the power utilization information of the electric energy meters hung below each power supply phase line of a power supply station area, and further, the power supply balance of each phase of power line is achieved, the power line loss is reduced, and the output of the power generation equipment is improved.
In the several embodiments provided in the present application, it should be understood that the disclosed system and method may be implemented in other ways. The system embodiments described above are merely illustrative, and the flowcharts and block diagrams in the figures, for example, illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, each functional module or unit in each embodiment of the present invention may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention or a part of the technical solution that contributes to the prior art in essence can be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a smart phone, a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention.
Claims (9)
1. The utility model provides an electric energy meter phase sequence identification equipment, its characterized in that is applied to power consumption information acquisition system, and this power consumption information acquisition system still includes concentrator, collector and a plurality of electric energy meter, the concentrator with the collector is connected, the collector with electric energy meter phase sequence identification equipment is connected, electric energy meter phase sequence identification equipment is a plurality of with this collector station district the electric energy meter is connected, the collector is according to the zero crossing point information of concentrator place power supply phase line and the phase sequence of self zero crossing point information determination self place power supply phase line, electric energy meter phase sequence identification equipment includes:
the device comprises a main control module and a zero-crossing detection module connected with the main control module;
the main control module is used for receiving a detection command which is sent by the collector and comprises zero-crossing point information of a power supply phase line where the collector is located and identity information of the electric energy meter and sending the identity information of the electric energy meter to the zero-crossing detection module;
the zero-crossing detection module is used for detecting zero-crossing point information of the electric energy meter corresponding to the identity information according to the received identity information of the electric energy meter and sending the zero-crossing point information to the main control module;
the main control module is further used for comparing the received zero-crossing point information of the electric energy meter with the zero-crossing point information of the power supply phase line where the collector is located, and determining the phase sequence of the power supply phase line where the electric energy meter is located according to the comparison result;
the main control module is further used for sending the phase sequence to the collector.
2. The phase sequence identification device of an electric energy meter according to claim 1, wherein the concentrator, the collector, the phase sequence identification device of the electric energy meter, and the plurality of electric energy meters are time-synchronized first before the phase sequence identification of the electric energy meter.
3. The phase sequence identification device of the electric energy meter according to claim 1, further comprising a power module:
and the power supply module is used for supplying power to the electric energy meter phase sequence identification equipment.
4. The phase sequence identification device of the electric energy meter according to claim 3, wherein the power supply module includes a charging interface and an AC/DC conversion unit.
5. The electric energy meter phase sequence identification device according to claim 1, further comprising a communication module:
the communication module is connected with the main control module;
and the communication module is used for realizing data transmission between the electric energy meter phase sequence identification equipment and other equipment in the power utilization information acquisition system.
6. The phase sequence identification device of the electric energy meter according to claim 5, wherein the communication module comprises a power line broadband carrier communication unit, a micro-power wireless communication unit and an RS485 communication unit.
7. The phase sequence identification device of the electric energy meter according to claim 6, wherein the phase sequence identification device communicates with the electric energy meter through an RS485 communication unit.
8. The electric energy meter phase sequence identification device according to claim 7, further comprising switches in one-to-one correspondence with the electric energy meters when the electric energy meter phase sequence identification device communicates with a plurality of the electric energy meters:
and the master control module is also used for controlling the corresponding switch of the electric energy meter to be switched on and controlling all the other switches to be switched off according to the electric energy meter identity information sent by the collector.
9. The electric energy meter phase sequence identification method is applied to an electric energy meter information acquisition system, the electric energy meter information acquisition system further comprises a concentrator, a collector and a plurality of electric energy meters, the concentrator is connected with the collector, the collector is connected with electric energy meter phase sequence identification equipment, the electric energy meter phase sequence identification equipment is connected with the plurality of electric energy meters in a station area where the collector is located, the collector determines the phase sequence of a power supply phase line where the collector is located according to zero crossing point information of the power supply phase line where the concentrator is located and the zero crossing point information of the collector, and the electric energy meter phase sequence identification method comprises the following steps:
receiving a detection command which is sent by the collector and comprises zero crossing point information of a power supply phase line where the collector is located and identity information of the electric energy meter;
detecting zero-crossing point information of the electric energy meter corresponding to the identity information according to the identity information of the electric energy meter;
and comparing the zero-crossing information of the electric energy meter with the zero-crossing information of the power supply phase line where the collector is located, determining the phase sequence of the power supply phase line where the electric energy meter is located according to the comparison result, and sending the phase sequence to the collector.
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| CN110865316A (en) * | 2019-11-28 | 2020-03-06 | 海南电网有限责任公司琼中供电局 | Ammeter wiring identification detection system and method |
| CN111521862A (en) * | 2020-06-01 | 2020-08-11 | 浙江嘉宏电力科技有限公司 | Accurate-calibration type zero-crossing detection method |
| CN112213558A (en) * | 2020-09-10 | 2021-01-12 | 国网湖北省电力有限公司宜昌供电公司 | Method for monitoring indoor load |
| CN112485548B (en) * | 2020-11-23 | 2023-03-14 | 国网北京市电力公司 | Testing device of HPLC module |
| CN113075475B (en) * | 2021-03-24 | 2022-12-23 | 南方电网科学研究院有限责任公司 | Phase-splitting identification method and device for electric energy meters in distribution area, terminal and storage medium |
| CN113252978A (en) * | 2021-05-11 | 2021-08-13 | 国网浙江省电力有限公司营销服务中心 | Phase identification method and identification device for target power supply area |
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Denomination of invention: Phase sequence identification equipment and method of electric energy meter Effective date of registration: 20220408 Granted publication date: 20211012 Pledgee: Shenzhen small and medium sized small loan Co.,Ltd. Pledgor: SHENZHEN FRIENDCOM TECHNOLOGY DEVELOPMENT Co.,Ltd. Registration number: Y2022440020045 |
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