CN114167108A - Electric energy meter phasor diagram drawing method, system, device and storage medium - Google Patents
Electric energy meter phasor diagram drawing method, system, device and storage medium Download PDFInfo
- Publication number
- CN114167108A CN114167108A CN202111458836.2A CN202111458836A CN114167108A CN 114167108 A CN114167108 A CN 114167108A CN 202111458836 A CN202111458836 A CN 202111458836A CN 114167108 A CN114167108 A CN 114167108A
- Authority
- CN
- China
- Prior art keywords
- voltage
- phase
- current
- meter
- electric energy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
- G01R11/04—Housings; Supporting racks; Arrangements of terminals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/10—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods using digital techniques
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a method, a system and a device for drawing a phasor diagram of an electric energy meter and a storage medium, wherein the method for drawing the phasor diagram of the electric energy meter comprises the following steps: acquiring the type and phase sequence of the electric meter; selecting a voltage reference diagram corresponding to the type and the phase sequence of the electric meter; acquiring the positive and negative of a voltage amplitude, a current amplitude, a power factor and consumed reactive power; plotting voltage amplitude values on the voltage reference graph according to the voltage amplitude values; and calculating an included angle between the voltage and the current according to the power factor, judging the leading or lagging states of the voltage and the current according to the positive and negative of the consumed reactive power, drawing the current assistance on the voltage reference diagram according to the leading or lagging states of the voltage and the current, and remotely obtaining the electric energy meter phasor diagram. The invention has the advantages of low cost, no need of volt-ampere phase meter and other instruments, and great saving of cost; the remote map can be drawn remotely and instantly, time and labor are saved, a large amount of journey time is saved, and user time and measurement data time are communicated and coordinated.
Description
Technical Field
The invention belongs to the technical field of electric power detection, and particularly relates to a method, a system and a device for drawing a phasor diagram of an electric energy meter and a storage medium.
Background
The meter installation and electricity connection are used as an important ring for the construction of a power system, the safety and reliability electricity utilization of power users and the accuracy of electric quantity statistics are concerned, and the meter installation and electricity connection has a vital influence on the investment income of power enterprises. How to ensure the correctness of wiring and how to guarantee the legal rights and interests of users is a problem that power enterprises should pay attention to and research. In the actual process, due to the reasons of limited capacity level of meter installation and power connection personnel or negligence in work and the like, wrong wiring conditions are inevitable, metering misalignment and calculation fee errors are caused, and unnecessary troubles are brought to power supply enterprises and users. After finding the suspected wrong wiring ammeter, the measurement staff need go to the scene at the first time, and the line is checked in a power failure mode. The field metering personnel usually choose one of the following two methods to check faulty wiring in a live way:
the first method is to measure the voltage, current, phase difference and other information of the electric meter by using a volt-ampere phase meter, manually draw a phasor diagram, analyze a wrong wiring mode and provide a correction measure. The method has high requirement on the technical level of workers, consumes less time, and can finish the phasor diagram drawing and analyzing work of an ammeter at one moment by college students trained through special misconnection courses after 15 minutes on average, and the power load changes instantaneously;
the second is that a specific ammeter calibrator or electricity utilization tester is used for measuring data, and only voltage and current need to be sampled, the calibrator or the electricity utilization tester can automatically draw a phasor diagram and give a wiring judgment result. Compared with the first method, the method reduces the technical threshold of outworkers, saves time, can simultaneously measure various data and improves the accuracy. However, the calibration instrument or electricity utilization inspection instrument required by the method is heavy, inconvenient to carry and expensive in manufacturing cost, and when the amplitude of the voltage and the current is too small, the drawn phasor diagram can be wrong.
In the two methods, a worker needs to go to the site, the route consumes a lot of time, only a phasor diagram at a certain moment on the site can be obtained, a real-time phasor diagram cannot be measured on the site within twenty-four hours, the loads of the same ammeter at different moments are different, the phasor diagram of some wrong wiring under a specific load condition is similar to the correct wiring, and the phasor diagram at a certain moment cannot be completely and objectively seen, so that the complete judgment cannot be accurately carried out.
With the comprehensive popularization of the intelligent electric meter and the trend of the functions of the electricity information acquisition system to be perfect, the electricity information acquisition system can automatically store massive historical data such as 96-point split-phase voltage, current, power factor, reactive power and the like of a high-voltage user and a public transformer user every day, the function of a low-voltage user is on line recently, in addition, the data of all users and information of whether a reverse phase sequence exists or not can be selected on a data calling and detecting interface to carry out direct reading and detection in real time, and the function of file inquiry can acquire the types of the electric meter and is divided into three-phase three-line, three-phase four-line and single-phase types. Based on the data acquisition and storage functions of the acquisition system, a remote drawing method of the real-time phasor diagram of the electric energy meter is explored, and the phasor diagram drawing and the wiring mode analysis can be directly realized on a computer without going to the site.
Disclosure of Invention
The invention aims to provide a method, a system, a device and a storage medium for drawing a phasor diagram of an electric energy meter, so as to solve the problem that the phasor diagram used in the process of detecting wrong wiring can only be drawn on site in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a method for drawing a phasor diagram of an electric energy meter, which comprises the following steps:
acquiring the type and phase sequence of the electric meter;
selecting a voltage reference diagram corresponding to the type and the phase sequence of the electric meter;
acquiring the positive and negative of a voltage amplitude, a current amplitude, a power factor and consumed reactive power;
plotting voltage amplitude values on the voltage reference graph according to the voltage amplitude values;
and calculating an included angle between voltage and current according to the power factor, judging the leading or lagging states of the voltage and the current according to the positive and negative of the consumed reactive power, and drawing current assistance on the voltage reference diagram according to the leading or lagging states of the voltage and the current and the included angle between the voltage and the current to obtain an electric energy meter phasor diagram. Optionally, the electric meter types include a three-phase three-wire electric meter, a three-phase four-wire electric meter and a single-phase electric meter.
Optionally, the phase sequence of the three-phase three-wire electric meter and the three-phase four-wire electric meter includes a positive phase sequence and a negative phase sequence.
Optionally, the voltage reference map includes a three-phase three-wire positive phase-sequence voltage reference map, a three-phase three-wire negative phase-sequence voltage reference map, a three-phase four-wire positive phase-sequence voltage reference map, a three-phase four-wire negative phase-sequence voltage reference map, and a single-phase voltage reference map.
Optionally, an included angle between the voltage and the current is calculated according to the power factor, and the specific method is as follows:
according to power factor
Inversely calculating the included angle between the voltage and the current
The calculation formula is as follows:
optionally, the relation between the voltage and the current phase lead or lag is determined according to the positive and negative of the consumed reactive power, and the specific method is as follows: if the consumed reactive power is positive, the voltage leads the current, and if the consumed reactive power is negative, the voltage lags the current.
Optionally, the electric energy meter phase quantity diagram is obtained, the wiring of the electric energy meter is judged, and field maintenance is performed when wrong wiring occurs.
In a second aspect of the present invention, a system for the electric energy meter phasor diagram drawing method is provided, including:
the first acquisition module is used for acquiring the type and phase sequence of the electric meter;
the second acquisition module is used for acquiring a voltage reference diagram corresponding to the type and the phase sequence of the electric meter;
the third acquisition module is used for acquiring the positive and negative of the voltage amplitude, the current amplitude, the power factor and the consumed reactive power;
the first drawing module is used for drawing a voltage amplitude on the voltage reference graph according to the voltage amplitude;
and the second drawing module is used for calculating an included angle between voltage and current according to the power factor, judging the leading or lagging states of the voltage and the current according to the positive and negative of the consumed reactive power, and drawing the current on the voltage reference diagram in an auxiliary manner according to the leading or lagging states of the voltage and the current and the included angle between the voltage and the current to obtain an electric energy meter phasor diagram.
In a third aspect of the present invention, a computer device is provided, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the electric energy meter phasor mapping method when executing the computer program.
In a fourth aspect of the present invention, a computer-readable storage medium is provided, which stores a computer program, and when the computer program is executed by a processor, the method for drawing a phasor diagram of an electric energy meter is implemented.
The invention has the following beneficial effects:
1) according to the electric energy meter phasor diagram drawing method provided by the embodiment of the invention, the voltage and current included angle is calculated through the power factor, the advance or lag relation of the voltage and the current is judged through the positive and negative of the consumed reactive power, and the diagram can be drawn remotely and instantly by combining the voltage and the current amplitude, so that the time and the labor are saved. Saving a large amount of distance time, communicating and coordinating user time and measuring data time, and improving working efficiency.
2) The electric energy meter phase diagram drawing method provided by the embodiment of the invention has zero cost, does not need volt-ampere phase meters, check meters or electricity utilization check meters and other instruments, and greatly saves cost.
3) On-site investigation requires at least two metering staff members to go together, one of which supervises. According to the electric energy meter phasor diagram drawing method provided by the embodiment of the invention, a computer can automatically draw a diagram in a remote checking method, at most one person is enough, and the labor force is reduced.
4) The electric energy meter phasor diagram drawing method provided by the embodiment of the invention not only solves the problem that a volt-ampere phase meter cannot simultaneously measure multiple data, but also solves the problem that the accuracy of an electricity utilization tester and a calibrator is inaccurate when the load is too low, and historical data and real-time data can be compared in a drawing mode, so that the problem that the phasor diagram is easy to judge and make mistakes when only a single moment is found in field investigation is solved, and the accuracy is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a flowchart of a method for drawing a phasor diagram of an electric energy meter according to an embodiment of the present invention.
Fig. 2 is a diagram of five voltage references in an embodiment of the invention, wherein: a is a three-phase three-wire system positive phase sequence, b is a three-phase four-wire system positive phase sequence, c is a three-phase three-wire system negative phase sequence, d is a three-phase four-wire system negative phase sequence, and e is a single-phase meter.
Fig. 3 is a phasor diagram drawing result diagram of an embodiment of the phasor diagram drawing method for the electric energy meter according to the embodiment of the invention.
Fig. 4 is a phasor diagram drawing result of another embodiment of the phasor diagram drawing method for the electric energy meter according to the embodiment of the invention.
Detailed Description
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The following detailed description is exemplary in nature and is intended to provide further details of the invention. Unless otherwise defined, all technical 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 herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention.
As shown in fig. 1, in a first aspect of the present invention, a method for drawing a phasor diagram of an electric energy meter is provided, including the following steps:
step 1: and acquiring the type of the electric meter.
The electric meter is divided into three types, namely three-phase three-wire type, three-phase four-wire type and single-phase type, massive data can be directly called from the background of the power utilization information acquisition system, and electric meter file information can be manually inquired.
Step 2: and (4) preprocessing data, aiming at screening out abnormal electric meters.
When the method is applied to the embodiment of the invention, the voltage amplitude of the three-phase three-wire ammeter is between 90V and 110V, the voltage amplitude of the three-phase four-wire ammeter and the voltage amplitude of the single-phase ammeter are between 200V and 240V, and the ammeter beyond the range needs to immediately check whether the voltage is in phase failure and unbalance on site.
And step 3: and (5) calling the phase sequence of the electric meter.
The phase sequence of the ammeter is divided into two types of positive phase sequence and negative phase sequence.
As an example of the present invention, the phase sequence of the electricity meter may directly call the data in batches from the background of the electricity information collection system, or "electricity meter event" may be selected on the "data call" interface of the system, and "voltage negative phase sequence record" on the right side — total number of times of voltage negative phase sequence "is selected for call, if the voltage negative phase sequence record is 0, it indicates that the electricity meter is positive phase sequence at this time, if the voltage negative phase sequence record is not 0, then" last 1 voltage negative phase sequence "is selected for call, if the last 1 voltage negative phase sequence end time is earlier than the current time, it indicates that the electricity meter is positive phase sequence at this time, otherwise, the electricity meter is negative phase sequence at this time.
And 4, step 4: and selecting a voltage reference diagram corresponding to the phase sequence and the type of the electric meter, wherein the reference diagram is shown in figure 2.
The voltage reference diagrams are respectively a three-phase three-wire positive phase-sequence voltage reference diagram, a three-phase three-wire negative phase-sequence voltage reference diagram, a three-phase four-wire positive phase-sequence voltage reference diagram, a three-phase four-wire negative phase-sequence voltage reference diagram and a single-phase voltage reference diagram (a single-phase table does not have the concept of positive and negative phase sequences).
And 5: and drawing the electric meter phasor diagram.
Example 1
Take a three-phase three-wire electric energy meter as an example.
For a three-phase three-wire electric energy meter, the voltage and current amplitudes of the first element and the second element are Uab, Ucb, Ia and Ic respectively, and the cosine value of the included angle between the voltage and the current of the first element is the power factor of the first element
The cosine value of the included angle between the voltage and the current of the second element is the power factor of the first element
The reactive power consumed by the first element is Q1, the reactive power consumed by the second element is Q2, and the above real-time dataThe data acquisition method can be used for acquiring data calling and testing functions of the electricity utilization information acquisition system, and historical data can be acquired in electricity meter curve data query functions of the electricity utilization information acquisition system.
Specifically, the process of drawing the phasor diagram of the three-phase three-wire electric energy meter mainly comprises the following three substeps:
step 511: finding a voltage direction on a voltage reference diagram of the three-phase three-wire electric energy meter, and drawing voltage amplitudes Uab and Ucb of the first element and the second element;
step 512: according to first element power factor
Back-calculating the first element voltage
And current
Included angle therebetween
According to second element power factor
Back-calculating the second element voltage
And current
Included angle therebetween
Calculating the formula:
step 513: according to the positive and negative of reactive power consumed by first element, the phase advance or lag relation between voltage and current of first element can be judged, if it is positive, the voltage is advanced with current, if it is negative, the voltage is lagged with current, and according to the included angle
And the first element current amplitude Ia may plot the first element current;
according to the positive and negative of reactive power consumed by second element, the phase advance or delay relation between voltage and current of second element can be judged, if it is positive, the voltage is advanced with current, if it is negative, the voltage is delayed with current, and according to the included angle
And the second element current amplitude Ic can draw the second element current;
plotting the voltages of the first and second elements
First element current
Second element current
After that, a phasor diagram was obtained.
Example 2
Take a three-phase four-wire electric energy meter as an example.
For a three-phase four-wire electric energy meter, the voltage and current amplitudes of the first element, the second element and the third element are Ua, Ub, Uc, Ia, Ib and Ic respectively, and the cosine value of the included angle between the voltage and the current of the first element is the power factor of the first element
The cosine value of the included angle between the voltage and the current of the second element is the power factor of the second element
The cosine of the angle between the voltage and the current of the third element is the power factor of the third element
The reactive power consumed by the first element is Q1, the reactive power consumed by the second element is Q2, the reactive power consumed by the third element is Q3, the real-time data can be acquired in a data calling and testing function of the electricity utilization information acquisition system, and the historical data can be acquired in an electricity meter curve data query function of the electricity utilization information acquisition system.
Specifically, the process of drawing the phasor diagram of the three-phase four-wire electric energy meter mainly comprises the following three substeps:
step 521: finding a voltage direction on a voltage reference diagram of the three-phase four-wire electric energy meter, and drawing voltage amplitudes Ua, Ub and Uc of a first element, a second element and a third element;
step 522: according to first element power factor
Back-calculating the first element voltage
And current
Included angle therebetween
According to second element power factor
Back-calculating the second element voltage
And current
Included angle therebetween
According to third element power factor
Back-calculating the third element voltage
And current
Included angle therebetween
Calculating the formula:
step 523: according to the positive and negative of reactive power consumed by first element, the phase advance or lag relation between voltage and current of first element can be judged, if it is positive, the voltage is advanced with current, if it is negative, the voltage is lagged with current, and according to the included angle
And the first element current amplitude Ia may plot the first element current;
according to the positive and negative of reactive power consumed by second element, the phase advance or delay relation between voltage and current of second element can be judged, if it is positive, the voltage is advanced with current, if it is negative, the voltage is delayed with current, and according to the included angle
And second element currentThe amplitude Ib may plot the second element current;
according to the positive and negative of reactive power consumed by the third element, the phase lead or lag relation between the voltage and the current of the third element can be judged, if the phase lead or lag relation is positive, the voltage leads the current, if the phase lead or lag relation is negative, the voltage lags the current, and then the phase lead or lag relation is judged according to the included angle
And the third element current amplitude Ic may plot the third element current;
plotting voltages of the first, second and third elements
Currents of the first, second and third elements
After that, a phasor diagram was obtained.
Example 3
Take a single-phase meter as an example.
For a single-phase meter, the amplitudes of the voltage and the current are U, I respectively, and the cosine value of the included angle between the voltage and the current is the power factor
The consumed reactive power is Q, the real-time data can be obtained in a data calling and testing function of the electricity utilization information acquisition system, and the historical data can be obtained in an electricity meter curve data query function of the electricity utilization information acquisition system.
Specifically, the process of drawing the phasor diagram of the single-phase table mainly comprises the following three substeps:
step 531: finding a voltage direction on a voltage reference diagram of the single-phase meter, and drawing a voltage amplitude U;
step 532: according to power factor
Back calculated voltage
And current
Included angle therebetween
Calculating the formula:
step 533: according to the positive and negative of the consumed reactive power, the phase advance or lag relation between the voltage and the current can be judged, if the phase advance or lag relation is positive, the voltage is advanced to the current, if the phase advance or lag relation is negative, the voltage is lagged to the current, and then the phase advance or lag relation is judged according to the included angle
And the current amplitude I can be used for drawing the current phasor
Drawing a voltage
Electric current
After that, a phasor diagram was obtained.
Step 6: judging the wrong wiring type and correcting measures. The technology is mature, can be used for automatically judging a writable program, and can be used for checking a wiring manual and analyzing the wiring manual.
The process of the invention is described in detail below by way of an example:
as an example, the electric meter 3462830086 is a positive-phase-sequence, three-phase three-wire electric meter, and the metering staff plots the phasor at the abnormal time, i.e., a negative current of phase a at 12 days 4 of 10 months in 2021. At this time, the voltage amplitude Uab is 105.0V, Ucb is 105.1V, the current amplitude Ia is-0.04A, Ic is 0.03A,
q1 and Q2 are both greater than 0.
Then calculate
The degree of the magnetic field is measured,
and (4) degree. The phasor diagram obtained by applying the vector diagram drawing method of the invention is shown in FIG. 3. The phasor diagram has no wrong wiring phenomenon, but has low power factor and needs further analysis.
The electric meter is observed to have large load and high power factor most of time by adopting system data, when the load is selected at 17 days 10, 12 and 10 months in 2021 under normal load, the voltage amplitude Uab is 103.6V, Ucb is 103.8V, the current amplitude Ia is 0.14A, Ic is 0.11A,
q1 and Q2 are both greater than 0.
Then calculate
The degree of the magnetic field is measured,
and (4) degree. The phasor diagram obtained by applying the vector diagram rendering method of the invention is shown in FIG. 4. The phasor diagram is very correct and can be considered as a negative current due to too low a power factor, without going to a field check.
In a second aspect of the present invention, there is provided a system for the electric energy meter phasor diagram drawing method, including:
the first acquisition module is used for acquiring the type and phase sequence of the electric meter;
the second acquisition module is used for acquiring a voltage reference diagram corresponding to the type and the phase sequence of the electric meter;
the third acquisition module is used for acquiring the positive and negative of the voltage amplitude, the current amplitude, the power factor and the consumed reactive power;
the first drawing module is used for drawing a voltage amplitude on the voltage reference graph according to the voltage amplitude;
and the second drawing module is used for calculating an included angle between voltage and current according to the power factor, judging the leading or lagging states of the voltage and the current according to the positive and negative of the consumed reactive power, and drawing the current on the voltage reference diagram in an auxiliary manner according to the leading or lagging states of the voltage and the current and the included angle between the voltage and the current to obtain an electric energy meter phasor diagram.
In a third aspect of the present invention, a computer device is provided, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the computer program is executed by the processor, the electric energy meter phasor mapping method described above is implemented.
In a fourth aspect of the present invention, a computer-readable storage medium is provided, where a computer program is stored, and when the computer program is executed by a processor, the method for drawing a phasor diagram of an electric energy meter is implemented.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.
Claims (10)
1. A method for drawing a phasor diagram of an electric energy meter is characterized by comprising the following steps:
acquiring the type and phase sequence of the electric meter;
selecting a voltage reference diagram corresponding to the type and the phase sequence of the electric meter;
acquiring the positive and negative of a voltage amplitude, a current amplitude, a power factor and consumed reactive power;
plotting voltage amplitude values on the voltage reference graph according to the voltage amplitude values;
and calculating an included angle between voltage and current according to the power factor, judging the leading or lagging states of the voltage and the current according to the positive and negative of the consumed reactive power, and drawing current assistance on the voltage reference diagram according to the leading or lagging states of the voltage and the current and the included angle between the voltage and the current to obtain an electric energy meter phasor diagram.
2. The method for mapping phasors of an electric energy meter according to claim 1, wherein said meter types include a three-phase three-wire meter, a three-phase four-wire meter, and a single-phase meter.
3. The electric energy meter phasor diagram drawing method according to claim 2, wherein the phase sequence of the three-phase three-wire electric meter and the three-phase four-wire electric meter includes a positive phase sequence and a negative phase sequence.
4. The electric energy meter phasor mapping method according to claim 1, wherein the voltage reference diagram includes a three-phase three-wire positive-phase-sequence voltage reference diagram, a three-phase three-wire negative-phase-sequence voltage reference diagram, a three-phase four-wire positive-phase-sequence voltage reference diagram, a three-phase four-wire negative-phase-sequence voltage reference diagram, and a single-phase voltage reference diagram.
5. The electric energy meter phasor diagram drawing method according to claim 1, characterized in that the included angle between voltage and current is calculated according to the power factor in the following specific manner:
according to power factor
Inversely calculating the included angle between the voltage and the current
The calculation formula is as follows:
6. the electric energy meter phasor diagram drawing method according to claim 5, wherein the relation between the voltage and the current phase lead or lag is determined according to the positive and negative of the consumed reactive power by: if the consumed reactive power is positive, the voltage leads the current, and if the consumed reactive power is negative, the voltage lags the current.
7. The electric energy meter phasor diagram drawing method according to claim 1, characterized in that wiring of an electric energy meter is judged after the electric energy meter phasor diagram is obtained, and field maintenance is performed when wrong wiring occurs.
8. A system for the electric energy meter phasor mapping method of claim 1, comprising:
the first acquisition module is used for acquiring the type and phase sequence of the electric meter;
the second acquisition module is used for acquiring a voltage reference diagram corresponding to the type and the phase sequence of the electric meter;
the third acquisition module is used for acquiring the positive and negative of the voltage amplitude, the current amplitude, the power factor and the consumed reactive power;
the first drawing module is used for drawing a voltage amplitude on the voltage reference graph according to the voltage amplitude;
and the second drawing module is used for calculating an included angle between voltage and current according to the power factor, judging the leading or lagging states of the voltage and the current according to the positive and negative of the consumed reactive power, and drawing the current on the voltage reference diagram in an auxiliary manner according to the leading or lagging states of the voltage and the current and the included angle between the voltage and the current to obtain an electric energy meter phasor diagram.
9. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the electric energy meter phasor mapping method according to any one of claims 1 to 6 when executing the computer program.
10. A computer-readable storage medium, in which a computer program is stored, which, when being executed by a processor, carries out a method for phasor mapping of an electric energy meter according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111458836.2A CN114167108A (en) | 2021-12-01 | 2021-12-01 | Electric energy meter phasor diagram drawing method, system, device and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111458836.2A CN114167108A (en) | 2021-12-01 | 2021-12-01 | Electric energy meter phasor diagram drawing method, system, device and storage medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114167108A true CN114167108A (en) | 2022-03-11 |
Family
ID=80482529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111458836.2A Pending CN114167108A (en) | 2021-12-01 | 2021-12-01 | Electric energy meter phasor diagram drawing method, system, device and storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114167108A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117879179A (en) * | 2024-03-11 | 2024-04-12 | 西安热工研究院有限公司 | Electrical equipment abnormal power state monitoring method and system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103675449A (en) * | 2013-12-02 | 2014-03-26 | 国家电网公司 | Method for generating wiring phasor diagram by using inner data of intelligent ammeter |
| CN104316822A (en) * | 2014-11-05 | 2015-01-28 | 国家电网公司 | Method for rapidly and accurately judging false wiring of metering device |
| CN105911420A (en) * | 2016-05-30 | 2016-08-31 | 厦门大学嘉庚学院 | Algorithm for automatically identifying 192 three-phase three-wire electric energy meter wiring modes |
| CN107942113A (en) * | 2017-11-29 | 2018-04-20 | 国家电网公司 | Failure electric quantity compensating method and system |
| CN109142829A (en) * | 2018-08-08 | 2019-01-04 | 国网重庆市电力公司电力科学研究院 | A kind of online discriminating method of three-phase and four-line metering device false wiring and system |
| CN113655430A (en) * | 2021-08-19 | 2021-11-16 | 国网湖北省电力有限公司随州供电公司 | Method for monitoring and automatically judging three-phase three-wire wrong wiring in batch |
-
2021
- 2021-12-01 CN CN202111458836.2A patent/CN114167108A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103675449A (en) * | 2013-12-02 | 2014-03-26 | 国家电网公司 | Method for generating wiring phasor diagram by using inner data of intelligent ammeter |
| CN104316822A (en) * | 2014-11-05 | 2015-01-28 | 国家电网公司 | Method for rapidly and accurately judging false wiring of metering device |
| CN105911420A (en) * | 2016-05-30 | 2016-08-31 | 厦门大学嘉庚学院 | Algorithm for automatically identifying 192 three-phase three-wire electric energy meter wiring modes |
| CN107942113A (en) * | 2017-11-29 | 2018-04-20 | 国家电网公司 | Failure electric quantity compensating method and system |
| CN109142829A (en) * | 2018-08-08 | 2019-01-04 | 国网重庆市电力公司电力科学研究院 | A kind of online discriminating method of three-phase and four-line metering device false wiring and system |
| CN113655430A (en) * | 2021-08-19 | 2021-11-16 | 国网湖北省电力有限公司随州供电公司 | Method for monitoring and automatically judging three-phase three-wire wrong wiring in batch |
Non-Patent Citations (1)
| Title |
|---|
| 朱新宇等: "《飞行电学基础》", 中国民航出版社, pages: 69 - 70 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117879179A (en) * | 2024-03-11 | 2024-04-12 | 西安热工研究院有限公司 | Electrical equipment abnormal power state monitoring method and system |
| CN117879179B (en) * | 2024-03-11 | 2024-06-11 | 西安热工研究院有限公司 | Electrical equipment abnormal power state monitoring method and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107340492B (en) | Electric energy metering device fault analysis method based on big data mining and scene pre-judgment | |
| CN101118269B (en) | Wire connection analyser for electric power protective circuit | |
| CN106569164A (en) | Method and system for synchronization testing of electric quantity of double-core electric energy meter | |
| CN111257820B (en) | Three-phase intelligent electric meter wiring remote detection method | |
| CN106483397B (en) | A kind of electric energy quality detection device and measurement method of high-precision high bandwidth | |
| CN101762768A (en) | Method for analyzing autotransformer differential protection CT circuit connection | |
| CN110187193B (en) | Dielectric loss monitoring system and method based on total-station voltage transformer stability judgment | |
| CN113655430A (en) | Method for monitoring and automatically judging three-phase three-wire wrong wiring in batch | |
| CN111724060A (en) | Integrated analysis monitoring system and analysis method for transformer area line loss | |
| CN109270316A (en) | A kind of power consumer electricity consumption abnormality recognition method, device and terminal device | |
| CN110058189B (en) | Electric energy meter misconnection judgment method based on phase angle analysis | |
| CN114167108A (en) | Electric energy meter phasor diagram drawing method, system, device and storage medium | |
| CN108802654A (en) | A kind of the automatic Calibration acquisition system and method for forming and capacity dividing test power supply | |
| CN113933580B (en) | System and method for detecting efficiency of direct-current charging pile based on instantaneous active synchronization | |
| CN111721988A (en) | Measuring instrument and method for electric quantity compensation of metering device | |
| CN109541520B (en) | Phase-splitting calculation method for fault error electric quantity of electric energy metering device | |
| CN108171960B (en) | Self-diagnosis method and system for abnormity of metering device of integrated energy management platform | |
| CN103344937A (en) | Device and method for detecting power consumption of intelligent watt-hour meter | |
| CN106526305B (en) | It is a kind of for judging the phasor analysis device of three-phase second loop return wiring correctness | |
| CN102095958A (en) | Method for analyzing wiring correctness of double-winding conventional transformer single-switch differential protection CT | |
| CN102095971A (en) | Method for analyzing wiring of differential protection CT return circuit of exciting transformer | |
| CN113552527B (en) | Multi-table set line loss table determining device and line loss table determining method | |
| CN105548793A (en) | Wiring identification method based load impedance feature | |
| CN102095981A (en) | Method for realizing differential protection CT (Current Transformer) loop wiring analysis of exciting transformer | |
| CN115587635A (en) | Transformer area line loss analysis method and system based on neutral point deviation judgment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |