CN114879121A - Method and device for detecting wrong wiring of intelligent electric energy meter, storage medium and equipment - Google Patents

Method and device for detecting wrong wiring of intelligent electric energy meter, storage medium and equipment Download PDF

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Publication number
CN114879121A
CN114879121A CN202210601005.4A CN202210601005A CN114879121A CN 114879121 A CN114879121 A CN 114879121A CN 202210601005 A CN202210601005 A CN 202210601005A CN 114879121 A CN114879121 A CN 114879121A
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voltage
electric energy
energy meter
intelligent electric
phasor
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常仕亮
成涛
吴高林
何珉
郑可
吴嘀
杜杰
张家铭
周峰
周华勇
谭时顺
王雪松
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State Grid Chongqing Electric Power Co Marketing Service Center
State Grid Corp of China SGCC
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State Grid Chongqing Electric Power Co Marketing Service Center
State Grid Corp of China SGCC
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
    • G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/55—Testing for incorrect line connections
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
    • Y04S10/52—Outage or fault management, e.g. fault detection or location

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Abstract

The invention provides a wrong wiring detection method, a device, a storage medium and equipment of an intelligent electric energy meter. The method realizes automatic judgment of the wrong wiring type of the intelligent electric energy meter, improves the accuracy of the judgment result, and avoids the safety risk of operation.

Description

Method and device for detecting wrong wiring of intelligent electric energy meter, storage medium and equipment
Technical Field
The invention relates to the technical field of intelligent electric energy meters, in particular to a method, a device, a storage medium and equipment for detecting wrong wiring of an intelligent electric energy meter.
Background
At present, when a related technician analyzes the wrong wiring condition of the intelligent electric energy meter, the related technician firstly needs to adopt a plurality of detection instruments such as a phase volt-ampere meter, a three-phase electric energy meter field inspection instrument, an electricity utilization inspection instrument, a pincerlike multimeter and the like to detect the intelligent electric energy meter, and then analyzes the metering fault and the existing abnormity of the intelligent electric energy meter.
The existing analysis method for the wrong wiring of the intelligent electric energy meter needs related technical personnel such as metering, meter installation and power connection, electricity utilization inspection and the like to use instruments and meters for detection, the accuracy of a detection result is influenced by the professional skill level and practical work experience of the related technical personnel, and due to the fact that the skill levels of the detection personnel are different, the accuracy of the obtained detection result and the analysis result is low, and great potential safety hazards exist in the detection process.
Disclosure of Invention
In view of this, the present application provides a method, an apparatus, a storage medium, and a device for detecting a wrong wiring of an intelligent electric energy meter, and mainly aims to solve the technical problems of low accuracy of an analysis result of the wrong wiring of the existing intelligent electric energy meter and potential safety hazards.
According to a first aspect of the present invention, there is provided a miswiring detection method for an intelligent electric energy meter, the method comprising:
receiving operation data uploaded by an intelligent electric energy meter, and acquiring the load characteristic of the intelligent electric energy meter;
extracting power data in the operating data, and judging whether the power data is in a preset power data range;
if the power data is not in the preset power data range, extracting a voltage phase sequence in the operating data, and generating a voltage component diagram according to the phase sequence type of the voltage phase sequence;
calculating the current phasor of each element in the intelligent electric energy meter according to the operation data, and adding the current phasor of each element into the voltage phasor diagram to generate a phasor map of the intelligent electric energy meter;
and determining a voltage access mode of each element and a current access mode of each element in the phasor diagram by using the load characteristics, and obtaining the misconnection type of the intelligent electric energy meter according to the voltage access mode of each element and the current access mode of each element.
Optionally, the generating a voltage phase quantity map according to the phase sequence type of the voltage phase sequence includes:
when the phase sequence type of the voltage phase sequence is a positive phase sequence, sequentially adding each phase voltage of the intelligent electric energy meter at intervals of 120 degrees along the clockwise direction, extracting the voltage phasor of each element in the operation data, and adding the voltage phasor of each element according to the wiring mode of the intelligent electric energy meter to obtain a voltage phasor diagram;
and when the phase sequence type of the voltage phase sequence is a reverse phase sequence, sequentially adding each phase voltage of the intelligent electric energy meter along the anticlockwise interval of 120 degrees, extracting the voltage phasor of each element in the operation data, and adding the voltage phasor of each element according to the wiring mode of the intelligent electric energy meter to obtain a voltage phasor diagram.
Optionally, the operational data includes a current value, active power, reactive power and power factor of each of the elements; calculating a current phasor of each element in the intelligent electric energy meter through the operation data, adding the current phasor of each element into the voltage phasor diagram, and generating a phasor map of the intelligent electric energy meter, wherein the phasor map comprises the following steps:
calculating a phase angle value of each element according to the power factor of each element;
determining the phase angle direction of each element according to the active power and the reactive power of each element;
calculating the position relation and the angle between the voltage phasor and the current phasor of each element according to the phase angle value and the phase angle direction of each element;
obtaining the current phasor of each element according to the position relation and the angle between the voltage phasor and the current phasor of each element and the current value of each element;
and adding the current phasor of each element into the voltage phasor diagram to generate a phasor diagram of the intelligent electric energy meter.
Optionally, the determining a voltage access manner of each element and a current access manner of each element in the phasor diagram by using the load characteristics includes:
obtaining a theoretical position relation and an angle between the current phasor of each element and the phase voltage of the intelligent electric energy meter according to the load characteristics of the intelligent electric energy meter;
according to the theoretical position relation and the angle, obtaining the phase difference of the phase voltage of the intelligent electric energy meter and the phase difference of the current phasor of each element in the phasor map;
and determining the voltage wiring mode of each element and the current wiring mode of each element according to the phase difference of the phase voltage of the intelligent electric energy meter and the phase difference of the current phasor of each element in the phasor map.
Optionally, the obtaining the miswiring type of the intelligent electric energy meter according to the voltage access manner of each element and the current access manner of each element includes:
acquiring a preset voltage wiring mode of each element and a preset current wiring mode of each element in the intelligent electric energy meter;
comparing the voltage wiring mode of each element with a preset voltage wiring mode of each element, and comparing the current wiring mode of each element with a preset current wiring mode of each element to obtain a comparison result of the voltage wiring mode of each element and a comparison result of the current wiring mode of each element;
and determining the wrong wiring type of the intelligent electric energy meter according to the comparison result of the voltage wiring mode of each element and/or the comparison result of the current wiring mode of each element, wherein the wrong wiring type comprises voltage wrong connection, current wrong connection, polarity reverse connection of a voltage transformer and polarity reverse connection of a current transformer.
Optionally, the power data includes a total power factor and a power factor of each element in the intelligent electric energy meter; the extracting power data in the operating data and judging whether the power data is in a preset power data range includes:
acquiring a preset power data range according to the load characteristics of the intelligent electric energy meter, wherein the preset power data range comprises a total power factor change range and a power factor change range of each element, which correspond to the intelligent electric energy meter under different operation quadrants of a quadrant I, a quadrant II, a quadrant III and a quadrant IV and different load power factor angles;
judging whether the total power factor is in the total power factor variation range or not, and judging whether the power factor of each element is in the corresponding power factor variation range of each element or not;
and if the total power factor is not in the variation range of the total power factor and/or the power factor of each element is not in the variation range of the power factor of each corresponding element, determining that the power data is not in the preset power data range.
Optionally, the extracting power data in the operating data, and determining whether the power data is within a preset power data range further includes:
if the total power factor is in the variation range of the total power factor and the power factor of each element is in the variation range of the power factor of each corresponding element, calculating the sum of the power factors of each element, calculating the ratio of the sum to the total power factor, and comparing the ratio with a preset ratio, wherein when the wiring mode of the intelligent electric energy meter is three-phase three-wire, the preset ratio is three-phase three-wire
Figure BDA0003669879520000041
When the wiring mode of the intelligent electric energy meter is a three-phase four-wire mode, the preset ratio is 3;
if the ratio is consistent with the preset ratio, the power data is in the preset power data range;
and if the ratio is not consistent with the preset ratio, the power data is not in the preset power data range.
According to a second aspect of the present invention, there is provided a miswiring detection device for an intelligent electric energy meter, the device comprising:
the acquisition module is used for receiving the operation data uploaded by the intelligent electric energy meter and acquiring the load characteristic of the intelligent electric energy meter;
the judging module is used for extracting power data in the operating data and judging whether the power data is in a preset power data range;
the extraction module is used for extracting a voltage phase sequence in the operating data if the power data is not in the preset power data range, and generating a voltage phase diagram according to the phase sequence type of the voltage phase sequence;
the calculation module is used for calculating the current phasor of each element in the intelligent electric energy meter through the operation data, adding the current phasor of each element into the voltage phasor diagram and generating a phasor map of the intelligent electric energy meter;
and the output module is used for determining the voltage access mode of each element and the current access mode of each element in the phasor diagram by using the load characteristics, and obtaining the misconnection type of the intelligent electric energy meter according to the voltage access mode of each element and the current access mode of each element.
According to a third aspect of the present invention, there is provided a storage medium having stored thereon a computer program which, when executed by a processor, implements the above-described method for detecting miswiring of an intelligent electric energy meter.
According to a fourth aspect of the present invention, there is provided a computer device, comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the method for detecting miswiring of the intelligent electric energy meter.
The invention provides a wrong wiring detection method, a device, a storage medium and equipment of an intelligent electric energy meter, which are characterized in that firstly, operation data uploaded by the intelligent electric energy meter are received, the load characteristic of the intelligent electric energy meter is obtained, secondly, power data in the operation data are extracted, whether the power data are in a preset power data range or not is judged, if the power data are not in the preset power data range, a voltage phase sequence in the operation data are extracted, a voltage phasor diagram is generated according to the phase sequence type of the voltage phase sequence, then, the current phasor of each element in the intelligent electric energy meter is calculated through the operation data, the current phasor of each element is added into the voltage phasor diagram to generate a phasor diagram of the intelligent electric energy meter, finally, the voltage access mode of each element in the phasor diagram and the current access mode of each element are determined by utilizing the load characteristic, and according to the voltage access mode of each element and the current access mode of each element, and obtaining the wrong wiring type of the intelligent electric energy meter. According to the method, the logic relation of the power data in the operation data of the intelligent electric energy meter is judged, the phasor atlas is determined by using the operation data, the wrong wiring type of the intelligent electric energy meter is analyzed according to the load characteristic of the intelligent electric energy meter, the automatic judgment of the wrong wiring type of the intelligent electric energy meter is realized, the accuracy of the judgment result is improved, and the safety risk of operation is avoided.
The foregoing description is only an overview of the technical solutions of the present application, and the present application can be implemented according to the content of the description in order to make the technical means of the present application more clearly understood, and the following detailed description of the present application is given in order to make the above and other objects, features, and advantages of the present application more clearly understandable.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a schematic flowchart illustrating a method for detecting a miswiring of an intelligent electric energy meter according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram illustrating a miswiring detection device of an intelligent electric energy meter according to an embodiment of the present invention;
fig. 3 shows a voltage phasor diagram of a three-phase three-wire intelligent electric energy meter in the method for detecting the miswiring of the intelligent electric energy meter according to the embodiment of the invention;
fig. 4 shows a phasor map of a three-phase three-wire intelligent electric energy meter in the method for detecting the wrong wiring of the intelligent electric energy meter according to the embodiment of the invention;
fig. 5 shows a voltage wiring manner and a current wiring manner of each element in a phasor map of a three-phase three-wire intelligent electric energy meter in the wrong wiring detection method of the intelligent electric energy meter according to the embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The embodiment of the application provides a wrong wiring detection method for an intelligent electric energy meter, and as shown in fig. 1, the method comprises the following steps:
101. and receiving the operation data uploaded by the intelligent electric energy meter, and acquiring the load characteristic of the intelligent electric energy meter.
In the embodiment of the application, the wrong wiring detection method of the intelligent electric energy meter can be applied to any metering points such as trade settlement gateways, trade settlement users and line loss assessment gateways, and the wrong wiring types of the intelligent electric energy meter in different operation quadrants of quadrant I, quadrant II, quadrant III and quadrant IV and different load characteristics in the metering points are researched and judged.
Specifically, the intelligent electric energy meter can display the voltage, the current, the power factor, the active power and the reactive power of each element in the meter, and the operation data uploaded by the intelligent electric energy meter, such as the voltage phase sequence, the total active power, the total reactive power, the total power factor and the like, can be read in real time, and can also remotely acquire the operation data through an acquisition system. The load characteristics are comprehensively analyzed according to the primary load tidal current direction, the input operation condition of the electric equipment, the load rate, the input condition of the reactive power compensation device and other factors, so that the type of the load is determined, namely whether the load is an inductive load or a capacitive load, and the specific operation quadrant of the intelligent electric energy meter.
102. And extracting power data in the operation data, and judging whether the power data is in a preset power data range.
In the embodiment of the application, whether the power data meet the preset rule and the logic relation is judged according to the rule and the logic relation presented by a power supply line or a power consumer under different inductive and capacitive load characteristics by obtaining the power data in the operation data of the intelligent electric energy meter so as to determine whether the intelligent electric energy meter normally operates.
Specifically, the laws and logic relationships presented by a power supply line or a power consumer under different inductive and capacitive load characteristics are embodied in each preset power data range of the intelligent electric energy meter under different operation quadrants of quadrant I, quadrant II, quadrant III and quadrant IV, which are obtained through the load characteristics, and when the power data in the operation data of the intelligent electric energy meter is within the preset power data range, it indicates that the intelligent electric energy meter is normally operated.
103. And if the power data is not in the preset power data range, extracting a voltage phase sequence in the operation data, and generating a voltage phasor diagram according to the phase sequence type of the voltage phase sequence.
In the embodiment of the application, when the power data of the intelligent electric energy meter is not in the preset power data range, that is, the intelligent electric energy meter does not meet the rule and the logic relationship which should be presented under different inductive and capacitive load characteristics, it can be determined that the intelligent electric energy meter is abnormal in operation and has the condition of wrong wiring, and the type of the wrong wiring of the intelligent electric energy meter needs to be further judged.
Specifically, the type of wrong wiring of the intelligent electric energy meter is judged, a phasor map needs to be generated, a voltage phasor map is generated according to read relevant data of voltage in the operation data of the intelligent electric energy meter, and the phasor map of the intelligent electric energy meter is further generated on the basis of the voltage phasor map.
104. Calculating the current phasor of each element in the intelligent electric energy meter through the operation data, and adding the current phasor of each element into the voltage phasor diagram to generate the phasor diagram of the intelligent electric energy meter.
In the embodiment of the application, according to the power factor value of each element in the operation data of the intelligent electric energy meter, the phase angle of each element is obtained by calculating an inverse cosine function, then the current phasor of each element is determined by combining the direction of the active power and the reactive power of each element, and finally the current phasor is added into a voltage phasor diagram to obtain the phasor diagram of the intelligent electric energy meter.
105. And determining the voltage access mode of each element and the current access mode of each element in the phasor diagram by using the load characteristics, and obtaining the wrong wiring type of the intelligent electric energy meter according to the voltage access mode of each element and the current access mode of each element.
In the embodiment of the application, in the generated phasor atlas of the intelligent electric energy meter, the voltage access mode of each element and the current access mode of each element can be determined according to the load characteristics, so that the type of wrong wiring of the intelligent electric energy meter can be accurately researched and judged without manual testing, and the research and judgment accuracy can reach 100%.
The invention provides a wrong wiring detection method, a device, a storage medium and equipment of an intelligent electric energy meter, which are characterized in that firstly, operation data uploaded by the intelligent electric energy meter are received, the load characteristic of the intelligent electric energy meter is obtained, secondly, power data in the operation data are extracted, whether the power data are in a preset power data range or not is judged, if the power data are not in the preset power data range, a voltage phase sequence in the operation data are extracted, a voltage phasor diagram is generated according to the phase sequence type of the voltage phase sequence, then, the current phasor of each element in the intelligent electric energy meter is calculated through the operation data, the current phasor of each element is added into the voltage phasor diagram to generate a phasor diagram of the intelligent electric energy meter, finally, the voltage access mode of each element in the phasor diagram and the current access mode of each element are determined by utilizing the load characteristic, and according to the voltage access mode of each element and the current access mode of each element, and obtaining the wrong wiring type of the intelligent electric energy meter. According to the method, the logic relation of the power data in the operation data of the intelligent electric energy meter is judged, the phasor atlas is determined by using the operation data, the wrong wiring type of the intelligent electric energy meter is analyzed according to the load characteristic of the intelligent electric energy meter, the automatic judgment of the wrong wiring type of the intelligent electric energy meter is realized, the accuracy of the judgment result is improved, and the safety risk of operation is avoided.
In one embodiment, step 103 may be specifically implemented by the following method: when the phase sequence type of the voltage phase sequence is a positive phase sequence, adding each phase voltage of the intelligent electric energy meter in turn at intervals of 120 degrees along the clockwise direction, extracting the voltage phasor of each element in the operation data, adding the voltage phasor of each element according to the wiring mode of the intelligent electric energy meter to obtain a voltage phasor diagram, when the phase sequence type of the voltage phase sequence is a negative phase sequence, adding each phase voltage of the intelligent electric energy meter in turn at intervals of 120 degrees along the anticlockwise direction, extracting the voltage phasor of each element in the operation data, and adding the voltage phasor of each element according to the wiring mode of the intelligent electric energy meter to obtain a voltage phasor diagram.
In this embodiment, the voltage phase sequence types of the intelligent electric energy meter are divided into a positive phase sequence and a negative phase sequence, and a correct voltage phasor diagram is generated according to different phase sequence types and the measured voltage phasor of each element.
Specifically, according to the method for detecting the wrong wiring of the intelligent electric energy meter provided by the embodiment of the application, the intelligent electric energy meter with a three-phase three-wire wiring mode is selected, the voltage specification is 3 × 100V, the current specification is 3 × 1.5(6) a, and the measured operation data is shown in table 1.
Figure BDA0003669879520000081
Figure BDA0003669879520000091
TABLE 1
Since the voltage phase sequence of the three-phase three-wire intelligent electric energy meter is measured to be a positive phase sequence, and the voltage value of each element is measured, it can be seen that a voltage phasor graph for determining the positive phase sequence according to the voltage phasor is shown in fig. 3.
In one embodiment, step 104 may be specifically implemented by the following method: the method comprises the steps of firstly calculating a phase angle numerical value of each element according to a power factor of each element, secondly determining a phase angle direction of each element according to active power and reactive power of each element, thirdly calculating a position relation and an angle between a voltage phasor and a current phasor of each element according to the phase angle numerical value and the phase angle direction of each element, further obtaining the current phasor of each element according to the position relation and the angle between the voltage phasor and the current phasor of each element and a current value of each element, and finally adding the current phasor of each element into a voltage phasor diagram to generate a phasor diagram of the intelligent electric energy meter.
In this embodiment, the operating data of the three-phase three-wire intelligent electric energy meter and the generated voltage phasor diagram acquired in the above embodiments are taken as references to calculate the current phasor of the first element therein
Figure BDA0003669879520000092
The method comprises the following specific steps: first, the value of the phase angle of the first element is calculated:
Figure BDA0003669879520000093
then, according to the active power Pa of the first element being 7.22 > 0 and the reactive power Qa of the first element being-25.50 < 0, the phase angle of the first element is known
Figure BDA0003669879520000094
It can be seen that the leading angle of the first element is 360 ° + (-73 °) 287 °, which results in the first element being able to be moved forward
Figure BDA0003669879520000095
So that the voltage phasor of the first element
Figure BDA0003669879520000096
Leading current phasor
Figure BDA0003669879520000097
Has an angle of 287 °; further calculating the current phasor of the second element
Figure BDA0003669879520000098
The method comprises the following specific steps: firstly, calculating a phase angle value of the second element:
Figure BDA0003669879520000099
then, according to the active power Pc-17.59 < 0 and Qc-18.51 < 0 of the second element, the phase of the second element can be knownCorner
Figure BDA00036698795200000910
The lead angle of the second element is thus 360 ° + (-133 °) -227 °, which results in the achievement of a lead angle of 360 ° + (-133 °)
Figure BDA00036698795200000911
Thus the voltage phasor of the second element
Figure BDA00036698795200000912
Leading the current phasor of the second element
Figure BDA00036698795200000913
Is 227 deg.. According to the calculation process, the current phasor of each element can be obtained, and then the current phasor of each element is added into the generated voltage phasor diagram, so that a three-phase three-wire intelligent electric energy meter phasor diagram can be obtained as shown in fig. 4.
In one embodiment, step 105 may be specifically implemented by the following method: according to the load characteristics of the intelligent electric energy meter, theoretical position relations and angles between current phasors of each element and phase voltages of the intelligent electric energy meter are obtained, then according to the theoretical position relations and the angles, phase differences of the phase voltages of the intelligent electric energy meter and phase differences of the current phasors of each element in a phasor map are obtained, and further according to the phase differences of the phase voltages of the intelligent electric energy meter and the phase differences of the current phasors of each element in the phasor map, a voltage wiring mode of each element and a current wiring mode of each element are determined.
In this embodiment, the operation data of the three-phase three-wire intelligent electric energy meter and the generated phasor map obtained in the above embodiments are taken as references, because
Figure BDA0003669879520000101
The voltage phase sequence is a positive phase sequence, and the load characteristic is used for acquiring that the load power factor angle is inductive 0-30 degrees, so that the current phasor of the element of the intelligent electric energy meter lags behind the corresponding phase voltage by 0-30 degrees. As can be seen from the figure 4, it is,
Figure BDA0003669879520000102
lagging phase voltage
Figure BDA0003669879520000103
About 17 deg., can be judged
Figure BDA0003669879520000104
And
Figure BDA0003669879520000105
is the current voltage of the same phase,
Figure BDA0003669879520000106
lagging phase voltage
Figure BDA0003669879520000107
About 17 deg., can be judged
Figure BDA0003669879520000108
And
Figure BDA0003669879520000109
is the current voltage of the same phase, and
Figure BDA00036698795200001010
there is no corresponding current flow to the current source,
Figure BDA00036698795200001011
sequentially judging the voltage of the b-phase
Figure BDA00036698795200001012
Is the c-phase voltage and is the c-phase voltage,
Figure BDA00036698795200001013
is the a-phase voltage and is the a-phase voltage,
Figure BDA00036698795200001014
is composed of
Figure BDA00036698795200001015
Is composed of
Figure BDA00036698795200001016
The condition of wrong wiring of each element in the three-phase three-wire intelligent electric energy meter in the embodiment is shown in fig. 5, wherein the phase voltage
Figure BDA00036698795200001017
Is a phase voltage
Figure BDA00036698795200001018
Phase voltage
Figure BDA00036698795200001019
Is b phase voltage
Figure BDA00036698795200001020
Phase voltage
Figure BDA00036698795200001021
Is a c-phase voltage
Figure BDA00036698795200001022
Voltage connection of first element
Figure BDA00036698795200001023
Current of the first element
Figure BDA00036698795200001024
Access
Figure BDA00036698795200001025
Second element voltage connection
Figure BDA00036698795200001026
Current of the second element
Figure BDA00036698795200001027
Access
Figure BDA00036698795200001028
The intelligent electric energy meter can be obtained by analyzing the wrong wiring of each element in the three-phase three-wire intelligent electric energy meterThe wrong wiring type of (2).
In one embodiment, step 105 may be specifically implemented by the following method: firstly, acquiring a preset voltage wiring mode of each element and a preset current wiring mode of each element in the intelligent electric energy meter, then comparing the voltage wiring mode of each element with the preset voltage wiring mode of each element, comparing the current wiring mode of each element with the preset current wiring mode of each element to obtain a comparison result of the voltage wiring mode of each element and a comparison result of the current wiring mode of each element, and finally determining the misconnection type of the intelligent electric energy meter according to the comparison result of the voltage wiring mode of each element and/or the comparison result of the current wiring mode of each element, wherein the misconnection type comprises voltage misconnection, current misconnection, voltage transformer polarity reversal and current transformer polarity reversal.
In this embodiment, the voltage and current of the intelligent electric energy meter have uniform and correct wiring modes under different wiring modes. Specifically, for the three-phase three-wire intelligent electric energy meter, the condition that the correct wiring is the voltage wiring is the phase voltage
Figure BDA00036698795200001029
Is a phase voltage
Figure BDA00036698795200001030
Phase voltage
Figure BDA00036698795200001031
Is b phase voltage
Figure BDA00036698795200001032
Phase voltage
Figure BDA00036698795200001033
Is a c-phase voltage
Figure BDA00036698795200001034
The current connection condition is the current of the first element
Figure BDA00036698795200001035
Access
Figure BDA00036698795200001036
Current of the second element
Figure BDA00036698795200001037
Access
Figure BDA00036698795200001038
I.e. the first element voltage
Figure BDA00036698795200001039
Access
Figure BDA00036698795200001040
Electric current of
Figure BDA00036698795200001041
Access
Figure BDA00036698795200001042
Second element voltage
Figure BDA00036698795200001043
Access
Figure BDA00036698795200001044
Electric current
Figure BDA00036698795200001045
Access
Figure BDA00036698795200001046
Under the wiring state, the three-phase three-wire intelligent electric energy meter can correctly meter. And when the actual wiring condition of the voltage or the current is inconsistent with the correct wiring condition, the wiring condition is wrong, and the metering of the three-phase three-wire intelligent electric energy meter is incorrect in the wrong wiring state, so that the metering is inaccurate. The wrong wiring types of the three-phase three-wire intelligent electric energy meter mainly comprise voltage wrong connection, current wrong connection, polarity reversal of a voltage transformer, polarity reversal of a current transformer and the likeTypes, different error types can be combined, for example, the voltage access condition is: phase voltage
Figure BDA0003669879520000111
Is a phase voltage
Figure BDA0003669879520000112
Phase voltage
Figure BDA0003669879520000113
Is a c-phase voltage
Figure BDA0003669879520000114
Phase voltage
Figure BDA0003669879520000115
Is b phase voltage
Figure BDA0003669879520000116
And the current access condition is: electric current
Figure BDA0003669879520000117
Access
Figure BDA0003669879520000118
Electric current
Figure BDA0003669879520000119
Access
Figure BDA00036698795200001110
The wiring mode is inconsistent with the correct wiring mode, the wiring error can be judged, the wrong wiring type is voltage misconnection, the polarity of the first element current transformer is reversely connected, and the metering of the intelligent electric energy meter is incorrect in the state. And to three-phase four-wire intelligent ammeter, under its correct wiring, the voltage access condition is: phase voltage
Figure BDA00036698795200001111
Is a phase voltage
Figure BDA00036698795200001112
Phase voltage
Figure BDA00036698795200001113
Is b phase voltage
Figure BDA00036698795200001114
Phase voltage
Figure BDA00036698795200001115
Is a c-phase voltage
Figure BDA00036698795200001116
The current access condition is as follows: the current connection condition is the current of the first element
Figure BDA00036698795200001117
Access
Figure BDA00036698795200001118
Current of the second element
Figure BDA00036698795200001119
Access
Figure BDA00036698795200001120
Current of the third element
Figure BDA00036698795200001121
Access
Figure BDA00036698795200001122
I.e. the first element voltage
Figure BDA00036698795200001123
Access
Figure BDA00036698795200001124
Electric current of
Figure BDA00036698795200001125
Access
Figure BDA00036698795200001126
Second element voltage
Figure BDA00036698795200001127
Access
Figure BDA00036698795200001128
Electric current
Figure BDA00036698795200001129
Access
Figure BDA00036698795200001130
Third element voltage
Figure BDA00036698795200001131
Access
Figure BDA00036698795200001132
Electric current
Figure BDA00036698795200001133
Access
Figure BDA00036698795200001134
Under this wiring state, three-phase four-wire intelligent ammeter can correct the measurement. The wiring inconsistent with the correct wiring belongs to wrong wiring, and the three-phase four-wire intelligent electric energy meter is incorrect in metering under the wrong wiring state, so that the wiring is inaccurate. Three-phase four-wire intelligent electric energy meter misconnection mainly includes types such as voltage misconnection, current misconnection, voltage transformer polarity reversal, current transformer polarity reversal, can make up between the different error types, the access condition of voltage and electric current for example is: first element voltage
Figure BDA00036698795200001135
Access
Figure BDA00036698795200001136
Electric current
Figure BDA00036698795200001137
Access
Figure BDA00036698795200001138
Second element voltage
Figure BDA00036698795200001139
Access
Figure BDA00036698795200001140
Electric current
Figure BDA00036698795200001141
Access
Figure BDA00036698795200001142
Third element voltage
Figure BDA00036698795200001143
Access
Figure BDA00036698795200001144
Electric current
Figure BDA00036698795200001145
Access
Figure BDA00036698795200001146
The wiring mode is wrong and is inconsistent with the correct wiring mode, the wrong wiring type is voltage misconnection and current misconnection, the polarity of the current transformer of the third element is reversely connected, and the metering of the three-phase four-wire intelligent electric energy meter is incorrect in the state.
In one embodiment, step 102 may be specifically implemented by the following method: acquiring a preset power data range according to the load characteristics of the intelligent electric energy meter, wherein the preset power data range comprises a total power factor change range and a power factor change range of each element corresponding to the intelligent electric energy meter in different operation quadrants of a quadrant I, a quadrant II, a quadrant III and a quadrant IV and different load power factor angles, judging whether the total power factor is in the total power factor change range, judging whether the power factor of each element is in the corresponding power factor change range of each element, and if the total power factor is not in the total power factor change range and/or the power factor of each element is not in the corresponding power factor change range of each element, judging that the power data is not in the preset power data range.
In this embodiment, the preset power data range of the intelligent electric energy meter specifically means that the absolute value of the power factor of the intelligent electric energy meter is defined as "large" according to 0.866-1, 0.5-0.866 is defined as "medium", 0-0.5 is defined as "small", the voltage of each element of the three-phase three-wire intelligent electric energy meter is close to the rated value, the voltage of each element of the three-phase four-wire intelligent electric energy meter is close to the rated value, and the current of each element has a certain amplitude, which generally needs to be 0.075A or more, and presents characteristics and rules, for example: when the intelligent electric energy meter is a three-phase three-wire intelligent electric energy meter, under the inductive load of a quadrant I of the intelligent electric energy meter and under the condition that the load power factor angle of the intelligent electric energy meter is 0-30 degrees, the total power factor change range of the intelligent electric energy meter is 0.866-1, the absolute value is large, wherein the power factor change range of a first element is 0.5-0.866, the absolute value is middle, the power factor change range of a second element is 0.866-1, and the absolute value is large; under the condition that the intelligent electric energy meter is under II-quadrant capacitive load and the load power factor angle of the intelligent electric energy meter is 0-30 degrees, the change range of the total power factor of the intelligent electric energy meter is-0.866-1, the absolute value is large, wherein the change range of the power factor of the first element is-0.866-1, the absolute value is large, the change range of the power factor of the second element is-0.5-0.866, and the absolute value is medium; under the inductive load of a quadrant III of the intelligent electric energy meter, under the condition that the load power factor angle of the intelligent electric energy meter is 30-60 degrees, the change range of the total power factor is-0.5-0.866, the absolute value is 'middle', wherein the change range of the first element power factor is 0-0.5, the absolute value is 'small', wherein the change range of the second element power factor is-0.866-1, and the absolute value is 'big'; under the condition that the intelligent electric energy meter is under the IV-quadrant capacitive load and the load power factor angle of the intelligent electric energy meter is 60-90 degrees, the change range of the total power factor is 0-0.5, the absolute value is small, wherein the change range of the first element power factor is 0.5-0.866, the absolute value is middle, the change range of the second element power factor is 0-0.5, and the absolute value is small.
When the intelligent electric energy meter is a three-phase four-wire intelligent electric energy meter, under the condition that the inductive load of a quadrant I and the load power factor angle is 0-30 degrees, the change ranges of the total power factor, the first element power factor, the second element power factor and the third element power factor of the intelligent electric energy meter are 0.866-1, and the absolute value is large; under the condition that the load power factor angle is 30-60 degrees under the II-quadrant capacitive load, the change ranges of the total power factor, the first element power factor, the second element power factor and the third element power factor are-0.5-0.866, and the absolute value is 'middle'; under the inductive load of the III quadrant, under the condition that the load power factor angle is 30-60 degrees, the change ranges of the total power factor, the first element power factor, the second element power factor and the third element power factor are-0.5-0.866, and the absolute value is 'middle'; under the condition that the load power factor angle is 60-90 degrees under the IV-quadrant capacitive load, the variation ranges of the total power factor, the first element power factor, the second element power factor and the third element power factor of the intelligent electric energy meter are 0-0.5, and the absolute value is small;
in the three-phase three-wire intelligent electric energy meter and the three-phase four-wire intelligent electric energy meter, the power data can be judged not to be in the preset power data range as long as the situation that the total power factor of the intelligent electric energy meter is not in the change range of the total power factor and/or the power factor of each element is not in the change range of the power factor of each corresponding element occurs.
In one embodiment, step 102 may also be implemented by: if the total power factor is in the variation range of the total power factor and the power factor of each element is in the variation range of the power factor of each corresponding element, calculating the sum of the power factors of each element, calculating the ratio of the sum to the total power factor, and comparing the ratio with a preset ratio, wherein when the wiring mode of the intelligent electric energy meter is three-phase three-wire, the preset ratio is three-phase three-wire
Figure BDA0003669879520000131
When the wiring mode of the intelligent electric energy meter is a three-phase four-wire mode, the preset ratio is 3, if the ratio is consistent with the preset ratio, the power data are in the preset power data range, and if the ratio is inconsistent with the preset ratio, the power data are not in the preset power data range.
In this embodiment, when the total power factor of the intelligent electric energy meter is within the variation range of the total power factor, and the power factor of each element in the intelligent electric energy meter is within the variation range of the power factor of each corresponding element, it cannot be completely stated that the wiring of the intelligent electric energy meter is completely correct, and further judgment needs to be made on the wiring condition of the intelligent electric energy meter according to the logical relationship between the power factors.
Specifically, a sum is obtained by calculating a logical relationship between the power factors, that is, by adding the power factors of each element in the intelligent electric energy meter, and a ratio of the sum to the total power factor is calculated. Further, the ratio is compared with a preset ratio, wherein when the wiring mode of the intelligent electric energy meter is three-phase three-wire, the preset ratio is
Figure BDA0003669879520000132
When the wiring mode of intelligent ammeter is three-phase four-wire, preset ratio is 3. Finally, a comparison result is obtained, when the ratio is consistent with the preset ratio, namely the power data is in the preset power data range, the wiring of the intelligent electric energy meter is completely correct, and when the ratio is inconsistent with the preset ratio, namely the power data is not in the preset power data range, the wiring of the intelligent electric energy meter is problematic. Specifically, the logic relationship between the total power factor of the three-phase three-wire intelligent electric energy meter and each element can be calculated by the following formula 1:
equation 1:
Figure BDA0003669879520000133
wherein
Figure BDA0003669879520000134
Is the sum of the power factors of each element;
Figure BDA0003669879520000135
is the total power factor.
The specific calculation of the logical relationship between the total power factor of the three-phase four-wire intelligent electric energy meter and each element can be realized by the following formula 2:
equation 2:
Figure BDA0003669879520000136
wherein
Figure BDA0003669879520000141
Is the sum of the power factors of each element;
Figure BDA0003669879520000142
is the total power factor.
Further, as a specific implementation of the method shown in fig. 1, the present embodiment provides a miswiring detection device for an intelligent electric energy meter, as shown in fig. 2, the device includes: the device comprises an acquisition module 21, a judgment module 22, an extraction module 23, a calculation module 24 and an output module 25, wherein:
the acquisition module 21 is used for receiving the operation data uploaded by the intelligent electric energy meter and acquiring the load characteristics of the intelligent electric energy meter;
the judging module 22 is used for extracting power data in the operating data and judging whether the power data is in a preset power data range;
the extraction module 23 is configured to extract a voltage phase sequence in the operating data if the power data is not within the preset power data range, and generate a voltage component diagram according to a phase sequence type of the voltage phase sequence;
the calculation module 24 is used for calculating the current phasor of each element in the intelligent electric energy meter through the operation data, adding the current phasor of each element into the voltage phasor diagram, and generating a phasor map of the intelligent electric energy meter;
the output module 25 may be configured to determine a voltage access manner of each element and a current access manner of each element in the phasor diagram by using the load characteristics, and obtain the misconnection type of the intelligent electric energy meter according to the voltage access manner of each element and the current access manner of each element.
In a specific application scenario, the extracting module 23 specifically includes, when the phase sequence type of the voltage phase sequence is a positive phase sequence, sequentially adding each phase voltage of the intelligent electric energy meter at intervals of 120 ° clockwise, extracting a voltage phasor of each element in the operation data, and adding the voltage phasor of each element according to a wiring manner of the intelligent electric energy meter to obtain a voltage phasor diagram; and when the phase sequence type of the voltage phase sequence is a reverse phase sequence, sequentially adding each phase voltage of the intelligent electric energy meter along the anticlockwise interval of 120 degrees, extracting the voltage phasor of each element in the operation data, and adding the voltage phasor of each element according to the wiring mode of the intelligent electric energy meter to obtain a voltage phasor diagram.
In a specific application scenario, the calculation module 24 is specifically configured to calculate a phase angle value of each element according to the power factor of each element; determining the phase angle direction of each element according to the active power and the reactive power of each element; calculating the position relation and the angle between the voltage phasor and the current phasor of each element according to the phase angle value and the phase angle direction of each element; obtaining the current phasor of each element according to the position relation and the angle between the voltage phasor and the current phasor of each element and the current value of each element; and adding the current phasor of each element into the voltage phasor diagram to generate a phasor diagram of the intelligent electric energy meter.
In a specific application scenario, the output module 25 may be specifically configured to obtain a theoretical position relationship and an angle between a current phasor of each element and a phase voltage of the intelligent electric energy meter according to a load characteristic of the intelligent electric energy meter; according to the theoretical position relation and the angle, the phase difference of the phase voltage of the intelligent electric energy meter and the phase difference of the current phasor of each element in the phasor map are obtained; and determining the voltage wiring mode of each element and the current wiring mode of each element according to the phase difference of the phase voltage of the intelligent electric energy meter and the phase difference of the current phasor of each element in the phasor map.
In a specific application scenario, the output module 25 may be specifically configured to obtain a voltage wiring manner preset for each element and a current wiring manner preset for each element in the intelligent electric energy meter; comparing the voltage wiring mode of each element with a preset voltage wiring mode of each element, and comparing the current wiring mode of each element with a preset current wiring mode of each element to obtain a comparison result of the voltage wiring mode of each element and a comparison result of the current wiring mode of each element; and determining the wrong wiring type of the intelligent electric energy meter according to the comparison result of the voltage wiring mode of each element and/or the comparison result of the current wiring mode of each element, wherein the wrong wiring type comprises voltage wrong connection, current wrong connection, polarity reverse connection of a voltage transformer and polarity reverse connection of a current transformer.
In a specific application scenario, the determining module 22 is specifically configured to obtain a preset power data range according to the load characteristics of the intelligent electric energy meter, where the preset power data range includes a total power factor variation range and a power factor variation range of each element corresponding to the intelligent electric energy meter in different operation quadrants of quadrant I, quadrant II, quadrant III, and quadrant IV and different load power factor angles; judging whether the total power factor is in a total power factor variation range or not, and judging whether the power factor of each element is in a corresponding power factor variation range of each element or not; and if the total power factor is not in the variation range of the total power factor and/or the power factor of each element is not in the variation range of the power factor of each corresponding element, judging that the power data is not in the preset power data range.
In a specific application scenario, the determining module 22 may be further configured to calculate a sum of the power factors of each component and a ratio of the sum to the power factor if the total power factor is within a variation range of the total power factor and the power factor of each component is within a variation range of the power factor, and compare the ratio with a preset ratio, where the preset ratio is a three-phase three-wire connection mode when the intelligent electric energy meter is connected in the three-phase three-wire connection mode
Figure BDA0003669879520000151
When the wiring mode of the intelligent electric energy meter is a three-phase four-wire mode, the preset ratio is 3; if the ratio is consistent with the preset ratio, the power data is in the preset power data range; and if the ratio is not consistent with the preset ratio, the power data is not in the preset power data range.
It should be noted that other corresponding descriptions of the functional units related to the wrong wiring detection device of the intelligent electric energy meter provided in this embodiment may refer to the corresponding descriptions in fig. 1, and are not described herein again.
Based on the method shown in fig. 1, correspondingly, the present embodiment further provides a storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the method for detecting a miswiring of the intelligent electric energy meter shown in fig. 1.
Based on such understanding, the technical solution of the present application may be embodied in the form of a software product, and the software product to be identified may be stored in a non-volatile storage medium (which may be a CD-ROM, a usb disk, a removable hard disk, or the like), and include several instructions for enabling a computer device (which may be a personal computer, a server, or a network device, or the like) to execute the method of the various implementation scenarios of the present application.
Based on the method shown in fig. 1 and the embodiment of the device for detecting miswiring of an intelligent electric energy meter shown in fig. 2, in order to achieve the above object, the embodiment further provides an entity device for detecting miswiring of an intelligent electric energy meter, which may specifically be a personal computer, a server, a smart phone, a tablet computer, a smart watch, or other network devices, and the entity device includes a storage medium and a processor; a storage medium for storing a computer program; a processor for executing a computer program for implementing the above-described method as shown in fig. 1.
Optionally, the entity device may further include a user interface, a network interface, a camera, a Radio Frequency (RF) circuit, a sensor, an audio circuit, a WI-FI module, and the like. The user interface may include a Display screen (Display), an input unit such as a keypad (Keyboard), etc., and the optional user interface may also include a USB interface, a card reader interface, etc. The network interface may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface), etc.
Those skilled in the art will appreciate that the physical device structure for detecting miswiring of the intelligent electric energy meter provided by the present embodiment does not constitute a limitation to the physical device, and may include more or less components, or combine some components, or arrange different components.
The storage medium may further include an operating system and a network communication module. The operating system is a program for managing the hardware of the above-mentioned entity device and the software resources to be identified, and supports the operation of the information processing program and other software and/or programs to be identified. The network communication module is used for realizing communication among components in the storage medium and communication with other hardware and software in the information processing entity device.
Through the above description of the embodiments, those skilled in the art will clearly understand that the present application can be implemented by software plus a necessary general hardware platform, and can also be implemented by hardware. By applying the technical scheme of the application, firstly, the operation data uploaded by the intelligent electric energy meter is received, the load characteristic of the intelligent electric energy meter is obtained, secondly, extracting power data in the operation data, judging whether the power data is in a preset power data range, if the power data is not in the preset power data range, extracting a voltage phase sequence in the operation data, and generating a voltage phase quantity diagram according to a phase sequence type of the voltage phase sequence, and then calculating the current phasor of each element in the intelligent electric energy meter through the operation data, adding the current phasor of each element into the voltage phasor diagram, generating a phasor map of the intelligent electric energy meter, finally determining the voltage access mode of each element and the current access mode of each element in the phasor map by using the load characteristics, and obtaining the wrong wiring type of the intelligent electric energy meter according to the voltage access mode of each element and the current access mode of each element. According to the method, the logic relation of the power data in the operation data of the intelligent electric energy meter is judged, the phasor atlas is determined by using the operation data, the wrong wiring type of the intelligent electric energy meter is analyzed according to the load characteristic of the intelligent electric energy meter, the automatic judgment of the wrong wiring type of the intelligent electric energy meter is realized, the accuracy of the judgment result is improved, and meanwhile, the safety risk of operation is avoided.
Those skilled in the art will appreciate that the drawings are merely schematic representations of preferred embodiments and that the blocks or flowchart illustrations are not necessary to practice the present application. Those skilled in the art will appreciate that the modules in the devices in the implementation scenario may be distributed in the devices in the implementation scenario according to the description of the implementation scenario, or may be located in one or more devices different from the present implementation scenario with corresponding changes. The modules of the implementation scenario may be combined into one module, or may be further split into a plurality of sub-modules.
The above application serial numbers are for description purposes only and do not represent the superiority or inferiority of the implementation scenarios. The above disclosure is only a few specific implementation scenarios of the present application, but the present application is not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present application.

Claims (10)

1. A wrong wiring detection method of an intelligent electric energy meter is characterized by comprising the following steps:
receiving operation data uploaded by an intelligent electric energy meter, and acquiring the load characteristic of the intelligent electric energy meter;
extracting power data in the operating data, and judging whether the power data is in a preset power data range;
if the power data is not in the preset power data range, extracting a voltage phase sequence in the operating data, and generating a voltage component diagram according to the phase sequence type of the voltage phase sequence;
calculating the current phasor of each element in the intelligent electric energy meter according to the operation data, and adding the current phasor of each element into the voltage phasor diagram to generate a phasor map of the intelligent electric energy meter;
and determining a voltage access mode of each element and a current access mode of each element in the phasor diagram by using the load characteristics, and obtaining the misconnection type of the intelligent electric energy meter according to the voltage access mode of each element and the current access mode of each element.
2. The method of claim 1, wherein the extracting the voltage phase sequence in the operating data and generating a voltage phase component map according to the phase sequence type of the voltage phase sequence comprises:
when the phase sequence type of the voltage phase sequence is a positive phase sequence, sequentially adding each phase voltage of the intelligent electric energy meter at intervals of 120 degrees along the clockwise direction, extracting the voltage phasor of each element in the operation data, and adding the voltage phasor of each element according to the wiring mode of the intelligent electric energy meter to obtain a voltage phasor diagram;
and when the phase sequence type of the voltage phase sequence is a reverse phase sequence, sequentially adding each phase voltage of the intelligent electric energy meter along the anticlockwise interval of 120 degrees, extracting the voltage phasor of each element in the operation data, and adding the voltage phasor of each element according to the wiring mode of the intelligent electric energy meter to obtain a voltage phasor diagram.
3. The method of claim 1, wherein the operational data includes a current value, active power, reactive power, and power factor for each of the elements; calculating a current phasor of each element in the intelligent electric energy meter through the operation data, adding the current phasor of each element into the voltage phasor diagram, and generating a phasor map of the intelligent electric energy meter, wherein the phasor map comprises the following steps:
calculating a phase angle value of each element according to the power factor of each element;
determining the phase angle direction of each element according to the active power and the reactive power of each element;
calculating the position relation and the angle between the voltage phasor and the current phasor of each element according to the phase angle value and the phase angle direction of each element;
obtaining the current phasor of each element according to the position relation and the angle between the voltage phasor and the current phasor of each element and the current value of each element;
and adding the current phasor of each element into the voltage phasor diagram to generate a phasor diagram of the intelligent electric energy meter.
4. The method of claim 1, wherein said determining a voltage access pattern of each element and a current access pattern of each element in said phasor diagram using said load characteristics comprises:
obtaining a theoretical position relation and an angle between the current phasor of each element and the phase voltage of the intelligent electric energy meter according to the load characteristics of the intelligent electric energy meter;
according to the theoretical position relation and the angle, obtaining the phase difference of the phase voltage of the intelligent electric energy meter and the phase difference of the current phasor of each element in the phasor map;
and determining the voltage wiring mode of each element and the current wiring mode of each element according to the phase difference of the phase voltage of the intelligent electric energy meter and the phase difference of the current phasor of each element in the phasor map.
5. The method according to claim 1, wherein the obtaining the miswiring type of the intelligent electric energy meter according to the voltage connection mode of each element and the current connection mode of each element comprises:
acquiring a preset voltage wiring mode of each element and a preset current wiring mode of each element in the intelligent electric energy meter;
comparing the voltage wiring mode of each element with a preset voltage wiring mode of each element, and comparing the current wiring mode of each element with a preset current wiring mode of each element to obtain a comparison result of the voltage wiring mode of each element and a comparison result of the current wiring mode of each element;
and determining the wrong wiring type of the intelligent electric energy meter according to the comparison result of the voltage wiring mode of each element and/or the comparison result of the current wiring mode of each element, wherein the wrong wiring type comprises voltage wrong connection, current wrong connection, polarity reverse connection of a voltage transformer and polarity reverse connection of a current transformer.
6. The method according to claim 1, wherein the power data includes a total power factor and a power factor for each element within the intelligent electric energy meter; the extracting power data in the operating data and judging whether the power data is in a preset power data range includes:
acquiring a preset power data range according to the load characteristics of the intelligent electric energy meter, wherein the preset power data range comprises a total power factor change range and a power factor change range of each element, which correspond to the intelligent electric energy meter under different operation quadrants of a quadrant I, a quadrant II, a quadrant III and a quadrant IV and different load power factor angles;
judging whether the total power factor is in the total power factor variation range or not, and judging whether the power factor of each element is in the corresponding power factor variation range of each element or not;
and if the total power factor is not in the variation range of the total power factor and/or the power factor of each element is not in the variation range of the power factor of each corresponding element, determining that the power data is not in the preset power data range.
7. The method of claim 6, wherein the extracting power data from the operation data and determining whether the power data is within a preset power data range further comprises:
if the total power factor is within the variation range of the total power factor and the power factor of each element is within the corresponding variation range of the power factor of each element,calculating the sum of the power factors of each element, calculating the ratio of the sum to the total power factor, and comparing the ratio with a preset ratio, wherein when the wiring mode of the intelligent electric energy meter is three-phase three-wire, the preset ratio is
Figure FDA0003669879510000031
When the wiring mode of the intelligent electric energy meter is a three-phase four-wire mode, the preset ratio is 3;
if the ratio is consistent with the preset ratio, the power data is in the preset power data range;
and if the ratio is not consistent with the preset ratio, the power data is not in the preset power data range.
8. The utility model provides a wrong wiring detection device of intelligent ammeter which characterized in that, the device includes:
the acquisition module is used for receiving the operation data uploaded by the intelligent electric energy meter and acquiring the load characteristic of the intelligent electric energy meter;
the judging module is used for extracting power data in the operating data and judging whether the power data is in a preset power data range;
the extraction module is used for extracting a voltage phase sequence in the operating data and generating a voltage component diagram according to the phase sequence type of the voltage phase sequence if the power data is not in the preset power data range;
the calculation module is used for calculating the current phasor of each element in the intelligent electric energy meter through the operation data, adding the current phasor of each element into the voltage phasor diagram and generating a phasor map of the intelligent electric energy meter;
and the output module is used for determining the voltage access mode of each element and the current access mode of each element in the phasor diagram by using the load characteristics, and obtaining the misconnection type of the intelligent electric energy meter according to the voltage access mode of each element and the current access mode of each element.
9. A storage medium having a computer program stored thereon, the computer program, when being executed by a processor, realizing the steps of the method of any one of claims 1 to 7.
10. A computer arrangement comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the computer program realizes the steps of the method of any one of claims 1 to 7 when executed by the processor.
CN202210601005.4A 2022-05-30 2022-05-30 Method and device for detecting wrong wiring of intelligent electric energy meter, storage medium and equipment Pending CN114879121A (en)

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