CN115963433B - Electric energy meter wiring inspection method, device, equipment and storage medium - Google Patents
Electric energy meter wiring inspection method, device, equipment and storage medium Download PDFInfo
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Abstract
The invention provides a method, a device, equipment and a storage medium for checking wiring of an electric energy meter, wherein the method comprises the following steps: selecting a reference port displaying a zero phase angle, and acquiring an actual phase angle of input phase voltage in the reference port displaying the zero phase angle, wherein the reference port displaying the zero phase angle is a voltage input port with the phase angle always being zero in inspection equipment; based on the actual phase angle of the input phase voltage in the reference port displaying zero phase angle and the wiring modes of the electric energy meter, constructing a voltage phase angle display sample library and a current phase angle display sample library corresponding to all wiring modes of the electric energy meter in the inspection equipment; and acquiring a voltage display phase angle and a current display phase angle of the electric energy meter to be detected, and inquiring a corresponding wiring mode in a voltage phase angle display sample library and the current phase angle display sample library to obtain the wiring mode of the electric energy meter to be detected. The wiring recognition accuracy and the wiring mode distinguishing speed of the electric energy meter are improved, intelligent rapid recognition is realized, and the operation is more convenient.
Description
Technical Field
The invention belongs to the technical field of power supply measurement, and relates to a method, a device, equipment and a storage medium for checking wiring of an electric energy meter.
Background
In an electric power three-phase four-wire power supply system, a three-phase four-wire electric energy meter plays an indispensable role as an important energy metering and settlement device. The three-phase four-wire electric energy meter is particularly applied to a three-phase four-wire three-element electric energy meter of a high-voltage line, and is provided with an external transformer, and whether the wiring of the external transformer is correct or not directly influences electricity metering and cost settlement. At the user side of the power grid, the error input wiring of the three-phase four-wire electric energy meter, especially the artificial conscious error wiring, changes the phase sequence of the voltage and the current, and causes deviation in power calculation, so that the electric charge pricing is reduced, pricing loss is caused, and the normal electricity utilization order is disturbed or even destroyed. However, it is generally difficult to distinguish the wrong input connection of the three-phase four-wire electric energy meter by manual observation, so that a professional electric power tool is required to be used for checking and distinguishing whether the connection of the user side of the power grid is correct.
Currently, in an electric power three-phase four-wire system, three-phase four-wire electric energy meter wiring identification has a traditional inspection mode and a special inspection instrument for inspection. The traditional checking mode mainly depends on professional checking staff, and judges whether a voltage line is not connected to a wiring terminal of the electric energy meter or not by using a universal meter according to the effective values of the phase voltage and the line voltage of the three-phase four-wire; the current clamp with current and direction display is utilized to check the direction of the current on the electric wire according to the direction of the input and output wiring terminals of the three-phase four-wire electric energy meter, and particularly for the three-phase four-wire electric energy meter with an external sensor element, the current clamp checks the magnitude and the direction of the current on the same electric wire according to the polarity direction of the mutual inductor of the electric energy meter, and judges whether the direction of the mutual inductor is reversely connected or not. The special instrument checking mode mainly depends on professional checking staff, and by utilizing instrument tools with a wiring identification function, such as a portable electricity consumption checking instrument, an electricity consumption checking instrument, a field checking instrument and the like, the testing instrument is connected into a tested circuit through a testing wire one-to-one correspondence according to the wiring mode of the detected three-phase four-wire electric energy meter, so that a wiring identification result is obtained. However, the existing special instrument is different in three-phase four-wire identification method, and the accuracy of the identification result is also different due to the different methods in effect, so that the special instrument is not convenient for engineering application.
Disclosure of Invention
Based on the method, the device, the equipment and the storage medium for checking the wiring of the electric energy meter are provided, and the problems of low accuracy and inconvenient operation of the wiring identification of the electric energy meter in the existing wiring identification method of the electric energy meter are solved.
The invention provides a wiring inspection method for an electric energy meter, which comprises the following steps:
selecting a reference port displaying a zero phase angle, and acquiring an actual phase angle of input phase voltage in the reference port displaying the zero phase angle, wherein the reference port displaying the zero phase angle is a voltage input port with the phase angle always being zero in inspection equipment;
based on the actual phase angle of the input phase voltage in the zero phase angle display reference port and the connection modes of the electric energy meter, constructing a voltage phase angle display sample library and a current phase angle display sample library corresponding to all the connection modes of the electric energy meter in the inspection equipment;
and acquiring a voltage display phase angle and a current display phase angle of the electric energy meter to be detected, and inquiring a corresponding wiring mode in the voltage phase angle display sample library and the current phase angle display sample library to obtain the wiring mode of the electric energy meter to be detected.
Further, the constructing a voltage phase angle display sample library and a current phase angle display sample library corresponding to all connection modes of the electric energy meter in the inspection device based on the actual phase angle of the input phase voltage in the reference port displaying the zero phase angle and the connection modes of the electric energy meter, includes:
According to the wiring modes of the three-phase voltage connected into the electric energy meter, connecting the three-phase voltage corresponding to each wiring mode into the inspection equipment;
acquiring the actual phase angles of the voltages of all phases of each wiring mode of the three-phase voltage from a power generation end, and acquiring the display phase angles of the input ports of the residual voltage based on the actual phase angles of the voltages of the phases of the reference ports of the zero phase angle and the input voltages of the input ports of the residual voltage;
obtaining a voltage phase angle display sample library through the display phase angles of the voltage input ports of each wiring mode of the three-phase voltage;
the current phase angle display sample library is constructed based on the actual phase angle of the phase voltage input to the zero phase angle reference port and the voltage phase angle display sample library.
Further, the obtaining the displayed phase angle of the residual voltage input port based on the actual phase angle of the phase voltage input to the zero phase angle reference port and the actual phase angle of the phase voltage input to the residual voltage input port includes:
and shifting the actual phase angle of the phase voltage of the residual voltage input port according to a shifting mode that the actual phase angle of the phase voltage of the zero phase angle reference port is shifted to zero degrees by taking the actual phase angle of the phase voltage of the zero phase angle reference port as a phase angle shifting amount, so as to obtain the display phase angle of the phase voltage of the residual voltage input port.
Further, the constructing the current phase angle display sample library based on the actual phase angle of the phase voltage input to the zero phase angle reference port and the voltage phase angle display sample library includes:
acquiring a three-phase current wiring mode corresponding to each wiring mode of the three-phase voltage, and connecting the three-phase current to the inspection equipment in a corresponding way, wherein the wiring modes of the three-phase current comprise the size and the direction of phase current of an input current input port;
measuring the actual phase angles of the current of each phase of the current input port of each wiring mode of the three-phase current, and acquiring the display phase angles of the current of each phase of the current input port of each wiring mode based on the actual phase angles of the current of each phase of the current input port of each wiring mode and the actual phase angles of the phase voltages of the reference port of the zero phase angle;
and obtaining the current phase angle display sample library based on the display phase angles of the current of each phase of the current input port of each wiring mode of the three-phase current corresponding to each wiring mode of the three-phase voltage.
Further, the obtaining the displayed phase angle of each phase current of the current input port of each connection mode based on the actual phase angle of each phase current of the current input port of each connection mode and the actual phase angle of the phase voltage of the reference port of zero phase angle includes:
And shifting the actual phase angles of the phase currents of the current input ports of each connection mode according to the shift mode that the actual phase angles of the phase voltages of the zero phase angle reference ports are shifted to zero degrees by taking the actual phase angles of the phase voltages of the zero phase angle reference ports as phase angle shift amounts, so as to obtain the display phase angles of the phase currents of the current input ports of each connection mode.
Further, the obtaining the voltage display phase angle and the current display phase angle of the electric energy meter to be detected, the inquiring corresponding wiring mode in the voltage phase angle display sample library and the current phase angle display sample library, after obtaining the wiring mode of the electric energy meter to be detected, further comprises:
electric energy loss metering is carried out on an electric energy meter which is not connected according to standard connection, and the electric energy loss metering method specifically comprises the following steps:
dividing the electric energy measured by the actual wiring by an electric energy deviation coefficient to obtain electric energy corresponding to correct wiring, wherein the electric energy deviation coefficient is the ratio of the electric energy measured by the actual wiring mode to the electric energy measured by the standard wiring mode in a specific time.
Further, the obtaining the voltage display phase angle and the current display phase angle of the electric energy meter to be detected, the inquiring corresponding wiring mode in the voltage phase angle display sample library and the current phase angle display sample library, after obtaining the wiring mode of the electric energy meter to be detected, further comprises:
And encoding the wiring mode of the electric energy meter to be detected into a corresponding data format according to a preset encoding rule.
The invention also provides a device for checking the wiring of the electric energy meter, which comprises:
the selecting module is used for selecting a reference port displaying a zero phase angle, acquiring an actual phase angle of input phase voltage in the reference port displaying the zero phase angle, wherein the reference port displaying the zero phase angle is a voltage input port with the phase angle always being zero in inspection equipment;
the sample library establishing module is used for establishing a voltage phase angle display sample library and a current phase angle display sample library corresponding to all wiring modes of the electric energy meter in the inspection equipment based on the actual phase angle of the input phase voltage in the zero phase angle reference port and the wiring modes of the electric energy meter;
the acquisition module is used for acquiring a voltage display phase angle and a current display phase angle of the electric energy meter to be detected, inquiring a corresponding wiring mode in the voltage phase angle display sample library and the current phase angle display sample library, and obtaining the wiring mode of the electric energy meter to be detected.
The invention also provides a computer device comprising a processor and a memory; the memory is used for storing software programs and modules, and the processor is used for implementing the method of any one of the above by running or executing the software programs and/or modules stored in the memory.
The present invention also provides a computer readable storage medium for storing program code for execution by a processor, the program code comprising instructions for implementing the method of any one of the above.
According to the electric energy meter wiring inspection method provided by the invention, the voltage phase angle display sample library and the current phase angle display sample library are constructed based on the actual phase angle of the input phase voltage in the zero phase angle display reference port and the electric energy meter wiring mode by selecting the zero phase angle display reference port; when the wiring mode of the electric energy meter to be detected is obtained, the inspection equipment is connected into the three-phase four-wire element according to the wiring mode of the electric energy meter to be detected, and is connected into the three-phase four-wire element, then a voltage display phase angle and a current display phase angle corresponding to the wiring mode of the electric energy meter to be detected are obtained, and then the corresponding wiring mode is inquired from the voltage phase angle display sample library and the current phase angle display sample library according to the obtained voltage display phase angle and the current display phase angle, so that the wiring mode of the electric energy meter to be detected is obtained. The wiring identification accuracy of the electric energy meter and the wiring mode identification speed of the electric energy meter are improved, meanwhile, intelligent rapid identification is realized, and operation is more convenient. The invention also provides a device, equipment and storage medium for checking the wiring of the electric energy meter, which can also realize the beneficial effects.
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In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic flow chart of an electric energy meter wiring inspection method according to an embodiment of the present invention.
Fig. 2 is a schematic block diagram of an electric energy meter wiring inspection device according to an embodiment of the present invention.
FIG. 3 is a block diagram of the sample library creation module of FIG. 2.
Fig. 4 is a block diagram of the actual phase angle acquisition module of fig. 2.
Fig. 5 is a schematic block diagram of another electric energy meter wiring inspection device according to an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a computer device 600 according to an embodiment of the present invention.
Fig. 7 discloses a computer storage medium according to an embodiment of the present invention.
Detailed Description
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the applications herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the figures above are intended to cover non-exclusive inclusions. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the following description, suffixes such as "module", "component", or "unit" for representing elements are used only for facilitating the description of the present application, and are not of specific significance per se.
As shown in fig. 1, a flow chart of an electric energy meter wiring inspection method provided by an embodiment of the invention is shown, and the method includes:
s1, selecting a reference port displaying a zero phase angle, and acquiring an actual phase angle of input phase voltage in the reference port displaying the zero phase angle, wherein the reference port displaying the zero phase angle is a voltage input port with the phase angle always being zero in inspection equipment;
step S2, based on the actual phase angle of the input phase voltage in the reference port displaying the zero phase angle and the wiring modes of the electric energy meter, constructing a voltage phase angle display sample library and a current phase angle display sample library corresponding to all the wiring modes of the electric energy meter in the inspection equipment;
and S3, acquiring a voltage display phase angle and a current display phase angle of the electric energy meter to be detected, and inquiring corresponding wiring modes in the voltage phase angle display sample library and the current phase angle display sample library to obtain the wiring modes of the electric energy meter to be detected.
In particular, the input port of the voltage on the checking device has U A 、U B 、U C In this embodiment, U is selected A The ports being reference ports exhibiting zero phase, i.e. no matter U A The port inputs which phase voltage signal actually, checks the equipment U A Phase angle display reading corresponding to portAlways 0 DEG, and in each phase voltage wiring mode, U A The actual phase angle of the port actual input phase voltage is then taken as U A The method comprises the steps of obtaining an actual phase angle of port actual input phase voltage and each phase voltage wiring mode, and obtaining U corresponding to each phase voltage wiring mode B 、U C And the phase angles displayed in the ports are further used for obtaining a voltage phase angle display sample library composed of phase voltage display phase angles corresponding to each wiring mode. Then, the phase angle corresponding to the phase current connection corresponding to each phase voltage is measured, namely, the phase current connection is connected into the current input port I according to the specific phase current connection mode A 、I B 、I C Then measuring the corresponding inspection of each current connection modeIn the checking device, the displayed phase angles of the currents in each port are further obtained, and a current phase angle display sample library composed of the phase current display phase angles corresponding to each current wiring mode is further obtained. According to the wiring mode of the detected electric energy meter connected to the three-phase four-wire element, the inspection equipment is connected to the three-phase four-wire element, the voltage display phase angle and the current display phase angle of the wiring mode of the electric energy meter to be detected connected to the three-phase four-wire element are obtained, then the corresponding wiring mode is searched in the voltage phase angle display sample library and the current phase angle display sample library, and the wiring mode is the wiring mode of the electric energy meter to be detected connected to the three-phase four-wire element.
In some embodiments, the step S2 includes:
s21, connecting the three-phase voltage to the inspection equipment according to the wiring modes of the three-phase voltage to the electric energy meter;
step S22, acquiring the actual phase angles of the voltages of all phases of each wiring mode of the three-phase voltage from a power generation end, and acquiring the display phase angles of the input ports of the residual voltage based on the actual phase angles of the voltages of the phases of the reference ports of the zero phase angle and the input voltages of the input ports of the residual voltage;
further, the step S22 is: and shifting the actual phase angle of the phase voltage of the residual voltage input port according to a shifting mode that the actual phase angle of the phase voltage of the zero phase angle reference port is shifted to zero degrees by taking the actual phase angle of the phase voltage of the zero phase angle reference port as a phase angle shifting amount, so as to obtain the display phase angle of the phase voltage of the residual voltage input port.
Step S23, obtaining a voltage phase angle display sample library through the display phase angles of the voltage input ports of each wiring mode of the three-phase voltage;
and step S24, constructing the current phase angle display sample library based on the actual phase angle of the phase voltage input to the zero phase angle reference port and the voltage phase angle display sample library.
Specifically, in the existing wiring mode of the electric energy meter, the phase sequence combination of the access voltage is U a U b U c 、U a U c U b 、U b U a U c 、U b U c U a 、U c U a U b 、U c U b U a The 6 modes are respectively connected into inspection equipment by the 6 phase voltage wiring modes, the actual phase angles of the three-phase voltages of the generating end of each wiring mode are obtained, and then the voltage is input into the port U A 、U B 、U C The displayed phase angles of (2) are:wherein X is A, B, C, and voltage input port U of each wiring mode is obtained B 、U C The phase angle is displayed. In the present embodiment, the inspection device U A Port phase angle display reading +.>Always 0 deg., resulting in a sample library of partial voltage phase angle displays as shown in table 1. Then, on the premise of each phase voltage, a wiring mode of phase current is obtained, each phase current wiring mode is connected into inspection equipment, and a current input port I in the inspection equipment of each phase current wiring mode is measured A 、I B 、I C Through the current input port I A 、I B 、I C Voltage input port U of the actual phase angle of (a) A Obtain the actual phase angle of the current input port I of each current connection mode A 、I B 、I C And further obtaining a current phase angle display sample library.
TABLE 1Partial voltage phase angle display sample library
According to the invention, through calibration of a hardware port UA signal reference, the phase angle range of the actual signal display of the computing port is expanded between-360 degrees and 360 degrees, and compared with a vector diagram, the resolution of the phase sequence of a three-phase four-wire voltage line is improved, and the phase sequence resolution problem is solved;
In some embodiments, the step S24 includes:
s241, acquiring a wiring mode of three-phase current corresponding to each wiring mode of three-phase voltage, and connecting the three-phase current corresponding to each wiring mode into the inspection equipment, wherein the wiring mode of the three-phase current comprises the size and the direction of phase current of an input current input port;
step S242, measuring the actual phase angles of the current of each phase of the current input port of each wiring mode of the three-phase current, and acquiring the display phase angles of the current of each phase of the current input port of each wiring mode based on the actual phase angles of the current of each phase of the current input port of each wiring mode and the actual phase angles of the phase voltages of the reference port of the zero phase angle;
further, the step S242 specifically includes: and shifting the actual phase angles of the phase currents of the current input ports of each connection mode according to the shift mode that the actual phase angles of the phase voltages of the zero phase angle reference ports are shifted to zero degrees by taking the actual phase angles of the phase voltages of the zero phase angle reference ports as phase angle shift amounts, so as to obtain the display phase angles of the phase currents of the current input ports of each connection mode.
And step S242, based on the display phase angles of the currents of each phase of the current input port of each wiring mode of the three-phase current corresponding to each wiring mode of the three-phase voltage, obtaining the current phase angle display sample library.
Specifically, the phase sequence of the phase current access electric energy meter is provided with I a I b I c 、I a I c I b 、I b I a I c 、I b I c I a 、I c I a I b 、I c I b I a "6 modes, the current value is negative and the current is positive, then three-phase currentThe current direction corresponding to each phase sequence of the pair is combined with "++ + +. ++ - +++ - +++ -) - +++ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -, and/or is formed by the 8 modes of" + - - - ". One of the phase voltages is selected to be connected to the checking equipment in a wiring mode, one of the phase current sequences and one of the current directions corresponding to the phase current sequences are selected to be connected to the checking equipment, and a current input port I in the checking equipment is measured A 、I B 、I C Then according to the actual phase angle of the reference port U showing zero phase angle A The actual phase angle of the input phase voltage and the actual phase angle of each phase current connection mode to obtain a current input port I A 、I B 、I C The displayed phase angles of (2) are:wherein X is A, B, C, so as to obtain current input port I of each phase current wiring mode A 、I B 、I C And (3) obtaining the current phase angle display sample library by obtaining the phase sequence and the direction of each phase current in each phase voltage wiring mode. In the present embodiment, the inspection device U A Port phase angle display reading +.>Always 0 DEG, the wiring mode of the phase voltage is U b U a U c A partial current phase angle display sample library as shown in table 2 was obtained.
TABLE 2The phase voltage wiring mode is U b U a U c At this time, the partial voltage phase angle display sample library
If the phase current connection mode is-I a I c -I b Current input port I of access checking equipment A 、I B 、I C Current input port I A Is shown as phase angleCurrent input port I B Is shown as +.>Current input port I C Is shown as +.>。
In some embodiments, the method further comprises:
and S4, measuring the electric energy loss of the electric energy meter which is not wired according to the standard wiring, wherein the electric energy loss is measured specifically as follows:
dividing the electric energy measured by the actual wiring by an electric energy deviation coefficient to obtain electric energy corresponding to correct wiring, wherein the electric energy deviation coefficient is the ratio of the electric energy measured by the actual wiring mode to the electric energy measured by the standard wiring mode in a specific time.
Specifically, by metering the electric energy loss of the electric energy meter which is not wired according to the standard wiring, the electric energy charging of one charging period can be corrected, the electric charge pricing loss is reduced, and the normal electric order is maintained.
In some embodiments, the method further comprises:
And S5, encoding the wiring mode of the electric energy meter to be detected into a corresponding data format according to a preset encoding rule.
Specifically, in this embodiment, the wiring mode is encoded into a 16-bit data type, i.e. two bytes, and is initially 0x0000H, where b 15-b 10 are reserved bits, b 9-b 0 are valid bits, b9 are voltage phase sequence flag bits, b 8-b 6 are voltage phase sequence status bits, b 5-b 3 are current phase sequence status bits, b 2-b 0 are current direction status bits, and voltage positive phase sequence U a U b U c 、U b U a U c 、U c U a U b When b9 is set to 1, the negative phase sequence U of the voltage a U c U b 、U b U c U a 、、U c U b U a B9 is set to 0; voltage phase sequence U a U b U c At the time of b 8-b 6, 000, the voltage phase sequence U b U c U a At the time, b 8-b 6 are set to 001, and the voltage phase sequence U is set c U a U b B 8-b 6 are placed in 010; voltage phase sequence U a U c U b At the time, b 8-b 6 are set to 011, and the voltage phase sequence U is set b U a U c At the time, b 8-b 6 are set to 100, and the voltage phase sequence U c U a U b B 8-b 6 are set to 101; b 5-b 3 are set to 000 when the current phase sequence is Ia Ib Ic, b 5-b 3 are set to 001 when the current phase sequence is Ib Ic, and b 5-b 3 are set to 010 when the current phase sequence is Ib Ic; b 5-b 3 are set 011 when the current phase sequence is Ia Ic Ib, b 5-b 3 are set 100 when the current phase sequence is Ib Ic Ia, and b 5-b 3 are set 101 when the current phase sequence is Ib; and (3) writing 1 at the position corresponding to b 5-b 3 if the channel current direction is positive, and writing 0 at the position corresponding to b 2-b 0 if the channel current direction is negative. In practical applications, it may be encoded according to a specific data protocol.
It should be understood that the sequence number of each step in the foregoing embodiment does not mean that the execution sequence of each process should be determined by the function and the internal logic, and should not limit the implementation process of the embodiment of the present invention.
According to the electric energy meter wiring inspection method provided by the embodiment of the invention, the voltage phase angle display sample library and the current phase angle display sample library are constructed based on the actual phase angle of the input phase voltage in the zero phase angle display reference port and the electric energy meter wiring mode by selecting the zero phase angle display reference port; when the wiring mode of the electric energy meter to be detected is obtained, the inspection equipment is connected into the three-phase four-wire element according to the wiring mode of the electric energy meter to be detected, and is connected into the three-phase four-wire element, then a voltage display phase angle and a current display phase angle corresponding to the wiring mode of the electric energy meter to be detected are obtained, and then the corresponding wiring mode is inquired from the voltage phase angle display sample library and the current phase angle display sample library according to the obtained voltage display phase angle and the current display phase angle, so that the wiring mode of the electric energy meter to be detected is obtained. The wiring identification accuracy of the electric energy meter and the wiring mode identification speed of the electric energy meter are improved, meanwhile, intelligent rapid identification is realized, and operation is more convenient.
As shown in fig. 2, a schematic block diagram of an electric energy meter wiring inspection device 200 according to an embodiment of the present invention is shown, where the device 200 includes:
a selecting module 201, configured to select a reference port displaying a zero phase angle, and obtain an actual phase angle of an input phase voltage in the reference port displaying the zero phase angle, where the reference port displaying the zero phase angle is a voltage input port in inspection equipment, where the phase angle display is always zero;
the sample library establishing module 202 is configured to establish a voltage phase angle display sample library and a current phase angle display sample library corresponding to all connection modes of the electric energy meter in the inspection device based on an actual phase angle of the input phase voltage in the zero phase angle reference port and the connection modes of the electric energy meter;
and the obtaining module 203 is configured to obtain a voltage display phase angle and a current display phase angle of the electric energy meter to be detected, and obtain a wiring mode of the electric energy meter to be detected from the voltage phase angle display sample library and the current phase angle display sample library by inquiring a corresponding wiring mode.
In some embodiments, as shown in fig. 3, the sample library creation module 202 is shown to include:
the access module 2021 is configured to access the three-phase voltage to the inspection device according to a wiring mode of the electric energy meter by using the three-phase voltage, where each wiring mode corresponds to the three-phase voltage;
An actual phase angle obtaining module 2022, configured to obtain an actual phase angle of each phase voltage of each connection mode of the three-phase voltage from a power generation end, and obtain a display phase angle of the residual voltage input port based on the actual phase angle of the phase voltage input to the zero phase angle reference port and the actual phase angle of the phase voltage input to the residual voltage input port;
the voltage phase angle display sample library obtaining module 2023 is configured to obtain the voltage phase angle display sample library through a display phase angle of a voltage input port of each wiring mode of the three-phase voltage;
a current phase angle display sample library acquisition module 2024 is configured to construct the current phase angle display sample library based on the actual phase angle of the phase voltage input to the zero phase angle reference port and the voltage phase angle display sample library.
In some embodiments, as shown in fig. 3, the actual phase angle acquisition module 2022 is shown to include:
and a first offset module 20221, configured to offset the actual phase angle of the phase voltage of the residual voltage input port by using the actual phase angle of the phase voltage of the zero phase angle reference port as a phase angle offset, so as to obtain the displayed phase angle of the phase voltage of the residual voltage input port.
In some embodiments, as shown in fig. 4, the current phase angle display sample library acquisition module 2024 comprises:
the three-phase current wiring mode obtaining module 20241 is configured to obtain a three-phase current wiring mode corresponding to each wiring mode of a three-phase voltage, and connect each wiring mode of the three-phase current to the inspection device, where the wiring modes of the three-phase current include a phase current size and a phase current direction of an input current input port;
the display phase angle obtaining module 20242 of each phase current is configured to measure an actual phase angle of each phase current of the current input port of each connection mode of the three-phase current, and obtain a display phase angle of each phase current of the current input port of each connection mode based on the actual phase angle of each phase current of the current input port of each connection mode and the actual phase angle of the phase voltage of the zero phase angle reference port;
and the construction module 20243 is used for obtaining the current phase angle display sample library based on the display phase angles of the current of each phase of the current input port of each wiring mode of the three-phase current corresponding to each wiring mode of the three-phase voltage.
In some embodiments, as shown in fig. 4, the display phase angle acquisition module 20242 of each phase current comprises:
And a second offset module 202421, configured to offset the actual phase angles of the phase currents of the current input ports of each connection mode by using the actual phase angles of the phase voltages of the zero phase angle reference ports as phase angle offset amounts and by using the offset modes in which the actual phase angles of the phase voltages of the zero phase angle reference ports are offset by zero degrees, so as to obtain the display phase angles of the phase currents of the current input ports of each connection mode.
In some embodiments, as shown in fig. 5, a schematic block diagram of another electric energy meter wiring inspection device 200 according to an embodiment of the present invention is provided, where the device 200 further includes:
the power correction module 204 is configured to measure power loss of a power meter that is not wired according to a standard wiring, specifically:
dividing the electric energy measured by the actual wiring by an electric energy deviation coefficient to obtain electric energy corresponding to correct wiring, wherein the electric energy deviation coefficient is the ratio of the electric energy measured by the actual wiring mode to the electric energy measured by the standard wiring mode in a specific time.
In some embodiments, as shown in fig. 5, a schematic block diagram of another electric energy meter wiring inspection device 200 according to an embodiment of the present invention is provided, where the device 200 further includes:
The encoding module 205 is configured to encode the wiring mode of the electric energy meter to be detected into a corresponding data format according to a preset encoding rule.
The specific limitation of the electric energy meter wiring inspection device can be referred to the limitation of the electric energy meter wiring inspection method, and the description thereof is omitted herein. All or part of each module in the electric energy meter wiring inspection device can be realized by software, hardware and a combination thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.
Referring to fig. 6, fig. 6 is a schematic structural diagram of a computer device 600 according to an embodiment of the present invention. As shown in fig. 6, the device 600 may include a processor 601 and a memory 602; the memory 602 is configured to store software programs and modules, and the processor 601 implements any one of the above-described electric energy meter wiring inspection methods by running or executing the software programs and/or modules stored in the memory 602.
Referring to fig. 7, an embodiment of the present invention discloses a computer storage medium 701, where the computer storage medium 701 is configured to store program code executed by a processor, and the program code includes instructions for implementing the method for checking wiring of an electric energy meter according to any one of the above embodiments.
The computer readable medium may be a computer readable signal medium or a computer readable storage medium. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a Read-Only Memory (ROM), an erasable programmable Read-Only Memory (Erasable Programmable Read Only Memory; EPROM) or flash Memory, an optical fiber, a portable compact disc Read-Only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, either in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations of the present application may be written in one or more programming languages, including an object oriented programming language such as Java, smalltalk, C ++ and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a local area network (Local Area Network; hereinafter: LAN) or a wide area network (Wide Area Network; hereinafter: WAN), or may be connected to an external computer (for example, through the Internet using an Internet service provider).
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
Depending on the context, the word "if" as used herein may be interpreted as "at … …" or "at … …" or "in response to a determination" or "in response to detection". Similarly, the phrase "if determined" or "if detected (stated condition or event)" may be interpreted as "when determined" or "in response to determination" or "when detected (stated condition or event)" or "in response to detection (stated condition or event), depending on the context.
In the several embodiments provided in the present invention, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the elements is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple elements or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather to enable any modification, equivalent replacement, improvement or the like to be made within the spirit and principles of the invention.
Claims (10)
1. The method for checking the wiring of the electric energy meter is characterized by comprising the following steps of:
selecting a reference port displaying a zero phase angle, and acquiring an actual phase angle of input phase voltage in the reference port displaying the zero phase angle, wherein the reference port displaying the zero phase angle is a voltage input port with the phase angle always being zero in inspection equipment;
based on the actual phase angle of the input phase voltage in the zero phase angle reference port and the connection mode of the electric energy meter, taking the actual phase angle of the phase voltage of the zero phase angle reference port as a phase angle offset, constructing a voltage phase angle display sample library and a current phase angle display sample library corresponding to all connection modes of the electric energy meter in the inspection equipment;
and acquiring a voltage display phase angle and a current display phase angle of the electric energy meter to be detected, and inquiring a corresponding wiring mode in the voltage phase angle display sample library and the current phase angle display sample library to obtain the wiring mode of the electric energy meter to be detected.
2. The method for checking connection of electric energy meter according to claim 1, wherein the constructing a voltage phase angle display sample library and a current phase angle display sample library corresponding to all connection modes of the electric energy meter in the checking device based on the actual phase angle of the input phase voltage in the reference port displaying zero phase angle and the connection mode of the electric energy meter comprises:
according to the wiring modes of the three-phase voltage connected into the electric energy meter, connecting the three-phase voltage corresponding to each wiring mode into the inspection equipment;
acquiring the actual phase angles of the voltages of all phases of each wiring mode of the three-phase voltage from a power generation end, and acquiring the display phase angles of the input ports of the residual voltage based on the actual phase angles of the voltages of the phases of the reference ports of the zero phase angle and the input voltages of the input ports of the residual voltage;
obtaining a voltage phase angle display sample library through the display phase angles of the voltage input ports of each wiring mode of the three-phase voltage;
the current phase angle display sample library is constructed based on the actual phase angle of the phase voltage input to the zero phase angle reference port and the voltage phase angle display sample library.
3. The method for checking the wiring of the electric energy meter according to claim 2, wherein the step of obtaining the displayed phase angle of the remaining voltage input port based on the actual phase angle of the phase voltage input to the zero phase angle reference port and the actual phase angle of the phase voltage input to the remaining voltage input port includes:
and shifting the actual phase angle of the phase voltage of the residual voltage input port according to the shifting mode that the actual phase angle of the phase voltage of the zero phase angle reference port is shifted to zero degree, so as to obtain the display phase angle of the phase voltage of the residual voltage input port.
4. The method for checking the wiring of the electric energy meter according to claim 2, wherein the constructing the current phase angle display sample library based on the actual phase angle of the phase voltage input to the zero phase angle reference port and the voltage phase angle display sample library comprises:
acquiring a three-phase current wiring mode corresponding to each wiring mode of the three-phase voltage, and connecting the three-phase current to the inspection equipment in a corresponding way, wherein the wiring modes of the three-phase current comprise the size and the direction of phase current of an input current input port;
Measuring the actual phase angles of the current of each phase of the current input port of each wiring mode of the three-phase current, and acquiring the display phase angles of the current of each phase of the current input port of each wiring mode based on the actual phase angles of the current of each phase of the current input port of each wiring mode and the actual phase angles of the phase voltages of the reference port of the zero phase angle;
and obtaining the current phase angle display sample library based on the display phase angles of the current of each phase of the current input port of each wiring mode of the three-phase current corresponding to each wiring mode of the three-phase voltage.
5. The method for checking the connection of the electric energy meter according to claim 4, wherein the step of obtaining the displayed phase angle of each phase current of the current input port of each connection mode based on the actual phase angle of each phase current of the current input port of each connection mode and the actual phase angle of the phase voltage of the reference port of the zero phase angle comprises the steps of:
and shifting the actual phase angles of the phase currents of the current input ports of each connection mode according to the shift mode that the actual phase angles of the phase voltages of the zero phase angle reference ports are shifted to zero degrees by taking the actual phase angles of the phase voltages of the zero phase angle reference ports as phase angle shift amounts, so as to obtain the display phase angles of the phase currents of the current input ports of each connection mode.
6. The method for checking the wiring of the electric energy meter according to claim 1, wherein the steps of obtaining the voltage display phase angle and the current display phase angle of the electric energy meter to be checked, inquiring the corresponding wiring modes from the voltage phase angle display sample library and the current phase angle display sample library, and obtaining the wiring modes of the electric energy meter further comprise:
electric energy loss metering is carried out on an electric energy meter which is not connected according to standard connection, and the electric energy loss metering method specifically comprises the following steps:
dividing the electric energy measured by the actual wiring by an electric energy deviation coefficient to obtain electric energy corresponding to correct wiring, wherein the electric energy deviation coefficient is the ratio of the electric energy measured by the actual wiring mode to the electric energy measured by the standard wiring mode in a specific time.
7. The method for checking the wiring of the electric energy meter according to claim 1, wherein the steps of obtaining the voltage display phase angle and the current display phase angle of the electric energy meter to be checked, inquiring the corresponding wiring modes from the voltage phase angle display sample library and the current phase angle display sample library, and obtaining the wiring modes of the electric energy meter further comprise:
coding the wiring mode of the electric energy meter to be detected into a corresponding data format according to a preset coding rule;
The wiring mode is encoded into a 16-bit data type, the data type is initially 0x0000H, b 15-b 10 are reserved bits, b 9-b 0 are valid bits, b9 is a voltage phase sequence flag bit, b 8-b 6 are voltage phase sequence status bits, b 5-b 3 are current phase sequence status bits, b 2-b 0 are current direction status bits, b9 is set to 1 when the voltage positive phase sequence is UaUbUc, ubUaUc, ucUaUb, and b9 is set to 0 when the voltage negative phase sequence is UaUcUb, ubUcUa, ucUbUa; setting b 8-b 6 at 000 when the voltage phase sequence UaUbUc, setting b 8-b 6 at 001 when the voltage phase sequence UbUcUa, and setting b 8-b 6 at 010 when the voltage phase sequence UcUaUb; b 8-b 6 are set to 011 when the voltage phase sequence UaUcUb is used, b 8-b 6 are set to 100 when the voltage phase sequence UbUaUc is used, and b 8-b 6 are set to 101 when the voltage phase sequence UcUaUb is used; b 5-b 3 are set to 000 when the current phase sequence IaIbsic, b 5-b 3 are set to 001 when the current phase sequence IbIcIa, and b 5-b 3 are set to 010 when the current phase sequence IcIaIb; b 5-b 3 are set 011 when the current phase sequence IaIcIb, b 5-b 3 are set 100 when the current phase sequence IbIcIa, and b 5-b 3 are set 101 when the current phase sequence IcIaIb; the current direction is written 1 corresponding to the position in b5 to b3 if the channel current direction is forward, and 0 corresponding to the position in b2 to b0 if the channel current direction is reverse.
8. An electric energy meter wiring inspection device, characterized in that the device comprises:
The selecting module is used for selecting a reference port displaying a zero phase angle, acquiring an actual phase angle of input phase voltage in the reference port displaying the zero phase angle, wherein the reference port displaying the zero phase angle is a voltage input port with the phase angle always being zero in inspection equipment;
the sample library establishing module is used for establishing a voltage phase angle display sample library and a current phase angle display sample library corresponding to all wiring modes of the electric energy meter in the inspection equipment based on the actual phase angle of the input phase voltage in the zero phase angle reference port and the wiring modes of the electric energy meter;
the acquisition module is used for acquiring a voltage display phase angle and a current display phase angle of the electric energy meter to be detected, inquiring a corresponding wiring mode in the voltage phase angle display sample library and the current phase angle display sample library, and obtaining the wiring mode of the electric energy meter to be detected.
9. A computer device, the device comprising a processor and a memory; the memory is used for storing software programs and modules, and the processor implements the method according to any one of claims 1 to 7 by running or executing the software programs and/or modules stored in the memory.
10. A computer readable storage medium for storing program code for execution by a processor, the program code comprising instructions for implementing the method of any one of claims 1 to 7.
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