CN112990676A - Method and device for remotely verifying type of three-phase electric energy meter in operation based on voltage information - Google Patents

Method and device for remotely verifying type of three-phase electric energy meter in operation based on voltage information Download PDF

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CN112990676A
CN112990676A CN202110237546.9A CN202110237546A CN112990676A CN 112990676 A CN112990676 A CN 112990676A CN 202110237546 A CN202110237546 A CN 202110237546A CN 112990676 A CN112990676 A CN 112990676A
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electric energy
phase
energy meter
voltage
phase electric
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王立斌
杜晓东
赵建利
曾四鸣
姬艳鹏
冯海燕
李士林
董娜
张宇贤
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State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Hebei Electric Power Co Ltd
State Grid Hebei Electric Power Co Ltd
Xingtai Power Supply Co of State Grid Hebei Electric Power Co Ltd
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State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Hebei Electric Power Co Ltd
State Grid Hebei Electric Power Co Ltd
Xingtai Power Supply Co of State Grid Hebei Electric Power Co Ltd
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    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
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Abstract

The invention discloses a method and a device for remotely verifying the type of a three-phase electric energy meter in operation based on voltage information, and relates to the technical field of power equipment management; the method comprises the steps that a processor reads archive information and voltage information of all three-phase electric energy meters from an electricity utilization information acquisition system, each three-phase electric energy meter is sequentially selected from the archive information of the three-phase electric energy meters, and the voltage conformity degree F is calculated4、F4' and F3If F is4More than or equal to 2, the power is judged to be a 3 gamma 220V three-phase four-wire electric energy meter, if F4' more than or equal to 2, the power is judged to be a three-phase four-wire electric energy meter with 3 gamma 57.7V, if F3More than or equal to 3, the three-phase electric energy meter is judged to be a 3 gamma 100V three-phase three-wire electric energy meter; the device is a computer readable storage medium, a computer program is stored in the computer readable storage medium, and the computer program is executed by a processor to realize the step of remotely verifying the type method of the in-service three-phase electric energy meter based on the voltage information; it passes through S1S5, and the like, the improvement of the work efficiency of verifying the type of the in-service three-phase electric energy meter is realized.

Description

Method and device for remotely verifying type of three-phase electric energy meter in operation based on voltage information
Technical Field
The invention relates to the technical field of power equipment management, in particular to a method and a device for remotely verifying the type of a three-phase electric energy meter in operation based on voltage information.
Background
In order to adapt to various application scenes, the three-phase electric energy meter has various types, and can be divided into a 3 x 220V three-phase four-wire electric energy meter, a 3 x 57.7V three-phase four-wire electric energy meter and a 3 x 100V three-phase three-wire electric energy meter according to voltage specifications and wiring modes. Due to negligence of workers in the recording work of the three-phase electric energy meter files, the types of the three-phase electric energy meters in the electric information acquisition system files are partially inconsistent with the actual conditions, for example, a 3 x 220V three-phase four-wire electric energy meter is recorded in the electric information acquisition system as follows: the 3 x 100V three-phase three-wire electric energy meter can affect the accuracy of a series of analysis and calculation based on the type of the three-phase electric energy meter in operation, such as overvoltage analysis, voltage loss analysis and the like. Therefore, the types of the in-transit three-phase electric energy meter in the power utilization information acquisition system files need to be checked regularly to ensure the accuracy of a series of analysis and calculation based on the types of the in-transit three-phase electric energy meter, but the in-transit three-phase electric energy meter has the characteristics of wide and dispersed geographical distribution, and a large amount of manpower and material resources are consumed by manually checking on site.
Problems with the prior art and considerations:
how to solve the technical problem of lower work efficiency of the type of a three-phase electric energy meter in operation.
Disclosure of Invention
The invention aims to provide a method and a device for remotely verifying the type of a three-phase electric energy meter in operation based on voltage information, which improve the working efficiency of verifying the type of the three-phase electric energy meter in operation through steps S1-S5 and the like.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: s1, reading archive information and voltage information of all three-phase electric energy meters from an electricity utilization information acquisition system by a processor; s2, the processor selects each three-phase electric energy meter from the file information of the three-phase electric energy meter in turn, and calculates the voltage conformity F between the three-phase electric energy meter and the 3 x 220V three-phase four-wire electric energy meter4If F is4At least 2, the three-phase four-wire electric energy meter is judged to be the 3 gamma 220V three-phase four-wire electric energy meter, and the step S5 is skipped, otherwise, the step S3 is entered; s3, a processor calculates voltage conformity F 'of the three-phase electric energy meter and the 3 x 57.7V three-phase four-wire electric energy meter'4If F'4At least 2, the three-phase four-wire electric energy meter is judged to be the 3 gamma 57.7V three-phase four-wire electric energy meter, the step S5 is skipped, and otherwise, the step S4 is executed; s4, a processor calculates the voltage conformity F between the three-phase electric energy meter and the 3 x 100V three-phase three-wire electric energy meter3If F is3At least 3, the three-phase electric energy meter is judged to be the 3 gamma 100V three-phase three-wire electric energy meter, the step S5 is skipped, and otherwise, the step S5 is entered; s5, judging the type of the object to be processed by the field coreAnd (5) performing grinding.
The further technical scheme is as follows: after the step S5, the method includes the steps of S6, determining whether the verification of all the types of the three-phase electric energy meter is completed, if so, entering the step S7, otherwise, returning to the step S2; and S7, the processor summarizes the information of the three-phase electric energy meter with the wrong type to form an error list, and summarizes the information of the three-phase electric energy meter with the type needing to be verified on site to form a list to be verified on site.
The further technical scheme is as follows: in the step of S2, the user can,
F4＝f4a+f4b+f4c (1)
(1) in the formula, F4For voltage conformity of three-phase electric energy meter and 3 x 220V three-phase four-wire electric energy meter4aThe A phase voltage of the three-phase electric energy meter and the 3 x 220V three-phase four-wire electric energy meter conforms to the mark, and the calculation mode is shown as the formula (2); f. of4bThe B-phase voltage of the three-phase electric energy meter and the 3 x 220V three-phase four-wire electric energy meter is consistent with the mark, and the calculation mode is shown as the formula (3); f. of4cC-phase voltage of the three-phase electric energy meter and the 3 x 220V three-phase four-wire electric energy meter conforms to the mark, and the calculation mode is shown as the formula (4);
Figure BDA0002960591830000021
(2) in the formula of U4aiCollecting values of A phase voltage of the three-phase electric energy meter at any collecting time; eta is a margin coefficient;
Figure BDA0002960591830000022
(3) in the formula of U4biCollecting a value for the B-phase voltage of the three-phase electric energy meter at any collecting time;
Figure BDA0002960591830000031
(4) in the formula of U4ciAnd acquiring a value of the C-phase voltage of the three-phase electric energy meter at any acquisition time.
The further technical scheme is as follows: in the step of S3, the user can,
F'4＝f'4a+f'4b+f'4c (6)
(6) of formula (II) F'4Is the voltage conformity f 'of a three-phase electric energy meter and a 3 gamma 57.7V three-phase four-wire electric energy meter'4aThe A phase voltage of the three-phase electric energy meter and the 3 x 57.7V three-phase four-wire electric energy meter is consistent with the mark, and the calculation mode is shown as the formula (7); f'4bThe B-phase voltage of the three-phase electric energy meter and the 3 x 57.7V three-phase four-wire electric energy meter is consistent with the mark, and the calculation mode is shown as the formula (8); f'4cThe C phase voltage of the three-phase electric energy meter and the 3 x 57.7V three-phase four-wire electric energy meter is consistent with the mark, and the calculation mode is shown as the formula (9);
Figure BDA0002960591830000032
(7) in formula (II) U'4aiCollecting values of A phase voltage of the three-phase electric energy meter at any collecting time;
Figure BDA0002960591830000033
(8) in formula (II) U'4biCollecting a value for the B-phase voltage of the three-phase electric energy meter at any collecting time;
Figure BDA0002960591830000034
(9) in formula (II) U'4ciAnd acquiring a value of the C-phase voltage of the three-phase electric energy meter at any acquisition time.
The further technical scheme is as follows: in the step of S4, the user can,
F3＝f3a+f3b+f3c (11)
(11) in the formula, F3For voltage coincidence between three-phase electric energy meter and 3 x 100V three-phase three-wire electric energy meter3aThe A phase voltage of the three-phase electric energy meter and the 3 gamma 100V three-phase three-wire electric energy meter conforms to the mark, and the calculation mode is shown as the formula (12); f. of3bThe B-phase voltage of the three-phase electric energy meter and the 3 gamma 100V three-phase three-wire electric energy meter conforms to the mark, and the calculation mode is shown as the formula (13); f. of3cThe C phase voltage of the three-phase electric energy meter and the 3 gamma 100V three-phase three-wire electric energy meter conforms to the mark, and the calculation mode is shown as the formula (14);
Figure BDA0002960591830000041
(12) in the formula of U3aiCollecting values of A phase voltage of the three-phase electric energy meter at any collecting time;
Figure BDA0002960591830000042
(13) in the formula of U3biCollecting a value for the B-phase voltage of the three-phase electric energy meter at any collecting time;
Figure BDA0002960591830000043
(14) in the formula of U3ciAnd acquiring a value of the C-phase voltage of the three-phase electric energy meter at any acquisition time.
The further technical scheme is as follows: in step S1, the profile information of the three-phase electric energy meter includes the number and the type of the three-phase electric energy meter.
The further technical scheme is as follows: in step S7, the processor saves the error list and the to-be-verified list in the memory.
The further technical scheme is as follows: in step S7, the processor outputs the error list and the to-be-verified list to a display or a printer.
An apparatus for remotely verifying the type of a three-phase electric energy meter in operation on the basis of voltage information comprises a memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the steps of the method for remotely verifying the type of a three-phase electric energy meter in operation on the basis of voltage information when executing the computer program.
An apparatus for remotely verifying the type of an in-service three-phase electric energy meter based on voltage information is a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, carries out the steps of the above-mentioned method for remotely verifying the type of an in-service three-phase electric energy meter based on voltage information.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
s1, reading archive information and voltage information of all three-phase electric energy meters from an electricity utilization information acquisition system by a processor; s2, the processor selects each three-phase electric energy meter from the file information of the three-phase electric energy meter in turn, and calculates the voltage conformity F between the three-phase electric energy meter and the 3 x 220V three-phase four-wire electric energy meter4If F is4At least 2, the three-phase four-wire electric energy meter is judged to be the 3 gamma 220V three-phase four-wire electric energy meter, and the step S5 is skipped, otherwise, the step S3 is entered; s3, a processor calculates voltage conformity F 'of the three-phase electric energy meter and the 3 x 57.7V three-phase four-wire electric energy meter'4If F'4At least 2, the three-phase four-wire electric energy meter is judged to be the 3 gamma 57.7V three-phase four-wire electric energy meter, the step S5 is skipped, and otherwise, the step S4 is executed; s4, a processor calculates the voltage conformity F between the three-phase electric energy meter and the 3 x 100V three-phase three-wire electric energy meter3If F is3At least 3, the three-phase electric energy meter is judged to be the 3 gamma 100V three-phase three-wire electric energy meter, the step S5 is skipped, and otherwise, the step S5 is entered; s5, determining that field verification of the type is required. According to the technical scheme, the working efficiency of the type of the in-service three-phase electric energy meter is improved by checking through steps from S1 to S5 and the like.
An apparatus for remotely verifying the type of a three-phase electric energy meter in operation on the basis of voltage information comprises a memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the steps of the method for remotely verifying the type of a three-phase electric energy meter in operation on the basis of voltage information when executing the computer program. According to the technical scheme, the working efficiency of the type of the three-phase electric energy meter in operation is verified through the device, the steps from S1 to S5 and the like.
An apparatus for remotely verifying the type of an in-service three-phase electric energy meter based on voltage information is a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, carries out the steps of the above-mentioned method for remotely verifying the type of an in-service three-phase electric energy meter based on voltage information. According to the technical scheme, the working efficiency of the type of the three-phase electric energy meter in operation is verified through the device, the steps from S1 to S5 and the like.
See detailed description of the preferred embodiments.
Drawings
FIG. 1 is a flow chart of example 1 of the present invention;
FIG. 2 is a graph of typical voltages of a three-phase four-wire electric energy meter of the present invention at a constant voltage of 220V;
FIG. 3 is a graph of voltage of a C voltage metering loop of the three-phase four-wire electric energy meter with 220V gamma according to the invention when a fault occurs;
FIG. 4 is a graph of typical voltages of a three-phase four-wire electric energy meter of the present invention, 3 x 57.7V, during normal operation;
FIG. 5 is a graph of voltage of a voltage metering loop A of the three-phase four-wire electric energy meter with 57.7V 3 gamma when the voltage metering loop fails;
FIG. 6 is a graph showing typical voltages of a 3 x 100V three-phase three-wire electric energy meter according to the present invention;
FIG. 7 is a graph of voltage when a C voltage metering loop of the three-phase three-wire electric energy meter with 100V 3 fails.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways than those described herein, and it will be apparent to those of ordinary skill in the art that the present application is not limited to the specific embodiments disclosed below.
Example 1:
as shown in fig. 1, the present invention discloses a method for remotely verifying the type of an in-service three-phase electric energy meter based on voltage information, which comprises the following steps:
s1, the processor reads the file information and the voltage information of all the three-phase electric energy meters from the electricity information acquisition system, and the file information of the three-phase electric energy meters comprises the serial numbers and the types of the three-phase electric energy meters.
S2, the processor selects each three-phase electric energy meter from the file information of the three-phase electric energy meter in turn, and calculates the voltage conformity F between the three-phase electric energy meter and the 3 x 220V three-phase four-wire electric energy meter4If F is4If the formula (5) is satisfied, the three-phase four-wire electric energy meter is judged to be the 3 x 220V three-phase four-wire electric energy meter, and the step S6 is carried out, if F is satisfied4If equation (5) is not satisfied, the process proceeds to step S3.
F4＝f4a+f4b+f4c (1)
(1) In the formula, F4For voltage conformity of three-phase electric energy meter and 3 x 220V three-phase four-wire electric energy meter4aThe A phase voltage of the three-phase electric energy meter and the 3 x 220V three-phase four-wire electric energy meter conforms to the mark, and the calculation mode is shown as the formula (2); f. of4bThe B-phase voltage of the three-phase electric energy meter and the 3 x 220V three-phase four-wire electric energy meter is consistent with the mark, and the calculation mode is shown as the formula (3); f. of4cThe C-phase voltage of the three-phase electric energy meter and the 3 x 220V three-phase four-wire electric energy meter are matched with the mark, and the calculation mode is shown as the formula (4).
Figure BDA0002960591830000071
(2) In the formula of U4aiCollecting values of A phase voltage of the three-phase electric energy meter at any collecting time; eta is a margin coefficient.
Figure BDA0002960591830000072
(3) In the formula of U4biCollecting a value for the B-phase voltage of the three-phase electric energy meter at any collecting time; eta is a margin coefficient.
Figure BDA0002960591830000073
(4) In the formula of U4ciCollecting a value for the C-phase voltage of the three-phase electric energy meter at any collecting time; eta is a margin coefficient.
F4≥2 (5)
S3, a processor calculates voltage conformity F 'of the three-phase electric energy meter and the 3 x 57.7V three-phase four-wire electric energy meter'4If F'4If the equation (10) is satisfied, the three-phase four-wire electric energy meter is judged to be the three-phase four-wire electric energy meter with the 3 x 57.7V, and the flow goes to step S6, if F'4If equation (10) is not satisfied, the process proceeds to step S4.
F'4＝f'4a+f'4b+f'4c (6)
(6) Of formula (II) F'4Is the voltage conformity f 'of a three-phase electric energy meter and a 3 gamma 57.7V three-phase four-wire electric energy meter'4aThe A phase voltage of the three-phase electric energy meter and the 3 x 57.7V three-phase four-wire electric energy meter is consistent with the mark, and the calculation mode is shown as the formula (7); f'4bThe B-phase voltage of the three-phase electric energy meter and the 3 x 57.7V three-phase four-wire electric energy meter is consistent with the mark, and the calculation mode is shown as the formula (8); f'4cThe C phase voltage of the three-phase electric energy meter and the 3 x 57.7V three-phase four-wire electric energy meter is identified in accordance with the calculation mode shown as the formula (9).
Figure BDA0002960591830000081
(7) In formula (II) U'4aiCollecting values of A phase voltage of the three-phase electric energy meter at any collecting time; eta is a margin coefficient.
Figure BDA0002960591830000082
(8) In formula (II) U'4biCollecting a value for the B-phase voltage of the three-phase electric energy meter at any collecting time; eta is a margin coefficient.
Figure BDA0002960591830000083
(9) In formula (II) U'4ciCollecting a value for the C-phase voltage of the three-phase electric energy meter at any collecting time; eta is a margin coefficient.
F'4≥2 (10)
S4, a processor calculates the voltage conformity F between the three-phase electric energy meter and the 3 x 100V three-phase three-wire electric energy meter3If F is3If the equation (15) is satisfied, the three-phase electric energy meter is determined to be the 3 x 100V three-phase three-wire electric energy meter, and the process goes to step S6, if F is3If equation (15) is not satisfied, the process proceeds to step S5.
F3＝f3a+f3b+f3c (11)
(11) In the formula, F3For voltage coincidence between three-phase electric energy meter and 3 x 100V three-phase three-wire electric energy meter3aThe A phase voltage of the three-phase electric energy meter and the 3 gamma 100V three-phase three-wire electric energy meter conforms to the mark, and the calculation mode is shown as the formula (12); f. of3bThe B-phase voltage of the three-phase electric energy meter and the 3 gamma 100V three-phase three-wire electric energy meter conforms to the mark, and the calculation mode is shown as the formula (13); f. of3cThe C-phase voltage of the three-phase electric energy meter and the 3 x 100V three-phase three-wire electric energy meter are matched with the mark, and the calculation mode is shown as the formula (14).
Figure BDA0002960591830000091
(12) In the formula of U3aiCollecting values of A phase voltage of the three-phase electric energy meter at any collecting time; eta is a margin coefficient.
Figure BDA0002960591830000092
(13) In the formula of U3biAnd acquiring a value of the B-phase voltage of the three-phase electric energy meter at any acquisition time.
Figure BDA0002960591830000093
(14) In the formula of U3ciCollecting a value for the C-phase voltage of the three-phase electric energy meter at any collecting time; eta is a margin coefficient.
F3≥3 (15)
And S5, judging that the type of the three-phase electric energy meter cannot be judged according to the voltage information and needing to be verified on site.
And S6, judging whether the verification of all the three-phase electric energy meter types is finished or not, if so, entering the step S7, and if not, returning to the step S2.
And S7, the processor stores the three-phase electric energy detail with the wrong type in the file and the three-phase electric energy detail with the type needing field verification in a memory and outputs the three-phase electric energy detail, and the staff corrects the file and verifies the field respectively.
Example 2:
the invention discloses a device for remotely verifying the type of an in-operation three-phase electric energy meter based on voltage information, which comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein the processor realizes the steps of embodiment 1 when executing the computer program.
Example 3:
the present invention discloses a computer-readable storage medium storing a computer program which, when executed by a processor, implements the steps in embodiment 1.
The conception of the application is as follows:
the invention discloses a remote verification method for the type of an in-transit three-phase electric energy meter based on voltage information, which aims to realize remote verification of an in-transit three-phase electric energy meter file according to the voltage information of the in-transit three-phase electric energy meter, thereby achieving the purposes of improving the working efficiency and saving manpower and material resources.
Description of the technical solution:
according to the voltage characteristics of different types of three-phase electric energy meters during operation, corresponding remote verification rules of the types of the three-phase electric energy meters are formulated, and then the types of the three-phase electric energy meters during operation are remotely verified based on the voltage information of the three-phase electric energy meters during operation.
1. 3 gamma 220V three-phase four-wire electric energy meter type remote verification rule
The three-phase voltage value of the normally-operated 3 x 220V three-phase four-wire electric energy meter A, B, C is kept at about 220V. If one phase voltage metering circuit is in fault, the phase voltage is abnormal, but the voltage values of the other two phases are still kept at about 220V. The probability of the simultaneous failure of two or more voltage metering loops is very small, and the invention is not considered.
As shown in FIG. 2, a typical voltage curve of a normally operating three-phase four-wire electric energy meter with a 3 x 220V voltage is shown.
As shown in FIG. 3, the voltage curve of the C voltage metering loop of the 3 x 220V three-phase four-wire electric energy meter is in failure.
According to the principle, the voltage conformity F between any three-phase electric energy meter and the 3 x 220V three-phase four-wire electric energy meter in the electric information acquisition system file is defined4If F is represented by formula (1)4And when the formula (5) is met, the three-phase electric energy meter is judged to be a 3 x 220V three-phase four-wire electric energy meter.
F4＝f4a+f4b+f4c (1)
(1) In the formula (f)4aFor the three-phase electric energyThe meter and the A-phase voltage of the 3 x 220V three-phase four-wire electric energy meter are matched with a mark, and the calculation mode is shown as the formula (2); f. of4bThe B-phase voltage of the three-phase electric energy meter and the 3 x 220V three-phase four-wire electric energy meter is consistent with the mark, and the calculation mode is shown as the formula (3); f. of4cThe C-phase voltage of the three-phase electric energy meter and the 3 x 220V three-phase four-wire electric energy meter are matched with the mark, and the calculation mode is shown as the formula (4).
Figure BDA0002960591830000101
(2) In the formula of U4aiCollecting values of A phase voltage of the three-phase electric energy meter at any collecting time; eta is a margin coefficient.
Figure BDA0002960591830000111
(3) In the formula of U4biCollecting a value for the B-phase voltage of the three-phase electric energy meter at any collecting time; eta is a margin coefficient.
Figure BDA0002960591830000112
(4) In the formula of U4ciCollecting a value for the C-phase voltage of the three-phase electric energy meter at any collecting time; eta is a margin coefficient.
F4≥2 (5)
In summary, if at least two phases of the three-phase electric energy meter A, B, C in the electricity information collection system file are maintained at about 220V, it can be determined that the three-phase electric energy meter is a 3 x 220V three-phase four-wire electric energy meter.
2. 3 x 57.7V three-phase four-wire electric energy meter type remote verification rule
The three-phase voltage value of the normally-operated 3 x 57.7V three-phase four-wire electric energy meter A, B, C is kept at about 57.7V. If one phase voltage metering circuit is in failure, the phase voltage is abnormal, but the voltage values of the other two phases are still kept at about 57.7V. The probability of the simultaneous failure of two or more voltage metering loops is very small, and the invention is not considered.
As shown in FIG. 4, a typical voltage curve of a three-phase four-wire electric energy meter with 57.7V 3 is in normal operation.
As shown in FIG. 5, the voltage curve of the three-phase four-wire electric energy meter A with the 3 x 57.7V when the voltage metering loop fails.
According to the principle, the voltage conformity F 'of any three-phase electric energy meter and the 3 x 57.7V three-phase four-wire electric energy meter in the electric information acquisition system file is defined'4If F 'is shown as formula (6)'4And when the formula (10) is met, the three-phase electric energy meter is judged to be a three-phase four-wire electric energy meter with 3 x 57.7V.
F'4＝f'4a+f'4b+f'4c (6)
(6) Of formula (II) to'4aThe A phase voltage of the three-phase electric energy meter and the 3 x 57.7V three-phase four-wire electric energy meter is consistent with the mark, and the calculation mode is shown as the formula (7); f'4bThe B-phase voltage of the three-phase electric energy meter and the 3 x 57.7V three-phase four-wire electric energy meter is consistent with the mark, and the calculation mode is shown as the formula (8); f'4cThe C phase voltage of the three-phase electric energy meter and the 3 x 57.7V three-phase four-wire electric energy meter is identified in accordance with the calculation mode shown as the formula (9).
Figure BDA0002960591830000121
(7) In formula (II) U'4aiCollecting values of A phase voltage of the three-phase electric energy meter at any collecting time; eta is a margin coefficient.
Figure BDA0002960591830000122
(8) In formula (II) U'4biCollecting a value for the B-phase voltage of the three-phase electric energy meter at any collecting time; eta is a margin coefficient.
Figure BDA0002960591830000123
(9) In formula (II) U'4ciCollecting a value for the C-phase voltage of the three-phase electric energy meter at any collecting time; eta is a margin coefficient.
F'4≥2 (10)
In summary, if at least two phases of the three phases A, B, C of the three-phase electric energy meter in the electricity information collection system file are maintained at about 57.7V, it can be determined that the three-phase electric energy meter is a 3 x 57.7V three-phase four-wire electric energy meter.
3. 3 gamma 100V three-phase three-wire electric energy meter type remote verification rule
The two-phase voltage value of the normally-operated 3 gamma 100V three-phase three-wire electric energy meter A, C should be kept at about 100V, and the B-phase voltage should be 0V all the time. If a fault occurs in the metering circuit of one of the A, C two phases, the phase voltage will be abnormal, but the other phase voltage value should be kept at about 100V. A. The probability of the C two-phase voltage metering circuit simultaneously having faults and the probability of the B phase voltage metering circuit having faults are very small, and the invention does not consider.
As shown in FIG. 6, a typical voltage curve of a three-phase three-wire electric energy meter with 3 x 100V in normal operation is shown.
As shown in FIG. 7, the voltage curve of the C voltage metering loop of the 3 x 100V three-phase three-wire electric energy meter is in failure.
According to the principle, the voltage conformity F between any three-phase electric energy meter and the 3 x 100V three-phase three-wire electric energy meter in the electricity information acquisition system file is defined3If F is represented by formula (11)3And when the formula (15) is met, the three-phase electric energy meter is judged to be a 3 x 100V three-phase three-wire electric energy meter.
F3＝f3a+f3b+f3c (11)
(11) In the formula (f)3aThe A phase voltage of the three-phase electric energy meter and the 3 gamma 100V three-phase three-wire electric energy meter conforms to the mark, and the calculation mode is shown as the formula (12); f. of3bThe B-phase voltage of the three-phase electric energy meter and the 3 gamma 100V three-phase three-wire electric energy meter conforms to the mark, and the calculation mode is shown as the formula (13); f. of3cThe C-phase voltage of the three-phase electric energy meter and the 3 x 100V three-phase three-wire electric energy meter are matched with the mark, and the calculation mode is shown as the formula (14).
Figure BDA0002960591830000131
(12) In the formula of U3aiCollecting values of A phase voltage of the three-phase electric energy meter at any collecting time; eta is a margin coefficient.
Figure BDA0002960591830000132
(13) In the formula of U3biAnd acquiring a value of the B-phase voltage of the three-phase electric energy meter at any acquisition time.
Figure BDA0002960591830000133
(14) In the formula of U3ciCollecting a value for the C-phase voltage of the three-phase electric energy meter at any collecting time; eta is a margin coefficient.
F3≥3 (15)
In summary, if at least one phase voltage value of two phases of a certain three-phase electric energy meter A, C in the electricity information acquisition system file is kept at about 100V, and the phase voltage B should be always 0V, it can be determined that the three-phase electric energy meter is a 3 x 100V three-phase three-wire electric energy meter.
4. Working procedure
As shown in fig. 1, the overall flow chart.
And S1, reading the file information and the voltage information of all the three-phase electric energy meters from the electricity utilization information acquisition system. The archive information of the three-phase electric energy meter comprises the number and the type of the three-phase electric energy meter.
S2, sequentially selecting the three-phase electric energy meter, and calculating the voltage conformity F between the three-phase electric energy meter and the 3 x 220V three-phase four-wire electric energy meter4If F is4If the formula (5) is satisfied, the three-phase four-wire electric energy meter is judged to be the 3 x 220V three-phase four-wire electric energy meter, and the operation goes to the step S6 if F4If equation (5) is not satisfied, the process proceeds to step S3.
S3, calculating the voltage conformity F 'of the three-phase electric energy meter and the 3 x 57.7V three-phase four-wire electric energy meter'4If F'4If the equation (10) is satisfied, the three-phase four-wire electric energy meter is judged to be the three-phase four-wire electric energy meter with the 3 x 57.7V, and the flow goes to step S6, if F'4If equation (10) is not satisfied, the process proceeds to step S4.
S4, calculating the voltage conformity F between the three-phase electric energy meter and the 3 x 100V three-phase three-wire electric energy meter3If F is3If the equation (15) is satisfied, the three-phase electric energy meter is determined to be the 3 x 100V three-phase three-wire electric energy meter, and the process goes to step S6, if F is3If equation (15) is not satisfied, the process proceeds to step S5.
And S5, judging that the type of the three-phase electric energy meter cannot be judged according to the voltage information and needing to be verified on site.
And S6, judging whether the verification of all the three-phase electric energy meter types is finished or not, if so, entering the step S7, and if not, returning to the step S2.
And S7, outputting three-phase electric energy particulars with wrong types in the file and three-phase electric energy particulars with types needing field verification, and respectively carrying out file correction and field verification by a worker.
5. Example analysis
By applying the method provided by the invention, the types of the three-phase electric energy meters in the electric information acquisition system files within a certain county range are verified, and the three-phase electric energy list with wrong types in the files and the three-phase electric energy list with the types needing to be verified on site are respectively shown in a table 1 and a table 2.
Table 1: three-phase electric energy list detail with wrong type in file
Electric energy meter numbering Type in archive Meet the criterion Type determined by the method
C69
3 gamma 100V three-phase three-wire electric energy meter F4≥2 3 gamma 220V three-phase four-wire electric energy meter
C103
3 gamma 220V three-phase four-wire electric energy meter F3≥3 3 gamma 100V three-phase three-wire electric energy meter
C158
3 gamma 100V three-phase three-wire electric energy meter F'4≥2 Three-phase four-wire electric energy meter with 57.7V 3 x
C227 3 gamma 220V three-phase four-wire electric energy meter F'4≥2 Three-phase four-wire electric energy meter with 57.7V 3 x
The type of the three-phase electric energy meter in the table 1 in the electric information acquisition system file is different from the type researched and judged by the method, so the type of the three-phase electric energy meter in the table 1 in the electric information acquisition system file needs to be corrected.
Table 2: three-phase electric energy meter of the type requiring field verification
Electric energy meter numbering Type in archive F4Value of F'4Value of F3Value of
C33 3 gamma 220V three-phase four-wire electric energy meter 1 0 0
C199 3 gamma 220V three-phase four-wire electric energy meter 0 0 2
F of three-phase electric energy meter in meter 24Does not satisfy formula (5) or F'4Does not satisfy the formula (10) F3The formula (15) is not satisfied, so the type of the three-phase electric energy meter in the meter 2 cannot be researched and judged remotely, and a worker needs to check the type of the three-phase electric energy meter on site.

Claims (10)

1. A method for remotely verifying the type of a three-phase electric energy meter in operation based on voltage information is characterized by comprising the following steps: the method comprises the following steps that S1, the processor reads all the archives of the three-phase electric energy meter from the electricity utilization information acquisition systemInformation and voltage information; s2, the processor selects each three-phase electric energy meter from the file information of the three-phase electric energy meter in turn, and calculates the voltage conformity F between the three-phase electric energy meter and the 3 x 220V three-phase four-wire electric energy meter4If F is4At least 2, the three-phase four-wire electric energy meter is judged to be the 3 gamma 220V three-phase four-wire electric energy meter, and the step S5 is skipped, otherwise, the step S3 is entered; s3, a processor calculates voltage conformity F 'of the three-phase electric energy meter and the 3 x 57.7V three-phase four-wire electric energy meter'4If F'4At least 2, the three-phase four-wire electric energy meter is judged to be the 3 gamma 57.7V three-phase four-wire electric energy meter, the step S5 is skipped, and otherwise, the step S4 is executed; s4, a processor calculates the voltage conformity F between the three-phase electric energy meter and the 3 x 100V three-phase three-wire electric energy meter3If F is3At least 3, the three-phase electric energy meter is judged to be the 3 gamma 100V three-phase three-wire electric energy meter, the step S5 is skipped, and otherwise, the step S5 is entered; s5, determining that field verification of the type is required.
2. The method for remotely verifying the type of an on-the-fly three-phase electric energy meter based on voltage information as claimed in claim 1, wherein: after the step S5, the method includes the steps of S6, determining whether the verification of all the types of the three-phase electric energy meter is completed, if so, entering the step S7, otherwise, returning to the step S2; and S7, the processor summarizes the information of the three-phase electric energy meter with the wrong type to form an error list, and summarizes the information of the three-phase electric energy meter with the type needing to be verified on site to form a list to be verified on site.
3. The method for remotely verifying the type of an on-the-fly three-phase electric energy meter based on voltage information as claimed in claim 1, wherein: in the step of S2, the user can,
F4＝f4a+f4b+f4c (1)
(1) in the formula, F4For voltage conformity of three-phase electric energy meter and 3 x 220V three-phase four-wire electric energy meter4aThe A phase voltage of the three-phase electric energy meter and the 3 x 220V three-phase four-wire electric energy meter conforms to the mark, and the calculation mode is shown as the formula (2); f. of4bThe phase B voltage of the three-phase electric energy meter and the 3 gamma 220V three-phase four-wire electric energy meter conforms to the standardThe calculation mode is shown as formula (3); f. of4cC-phase voltage of the three-phase electric energy meter and the 3 x 220V three-phase four-wire electric energy meter conforms to the mark, and the calculation mode is shown as the formula (4);
Figure FDA0002960591820000011
(2) in the formula of U4aiCollecting values of A phase voltage of the three-phase electric energy meter at any collecting time; eta is a margin coefficient;
Figure FDA0002960591820000021
(3) in the formula of U4biCollecting a value for the B-phase voltage of the three-phase electric energy meter at any collecting time;
Figure FDA0002960591820000022
(4) in the formula of U4ciAnd acquiring a value of the C-phase voltage of the three-phase electric energy meter at any acquisition time.
4. The method for remotely verifying the type of an on-the-fly three-phase electric energy meter based on voltage information as claimed in claim 1, wherein: in the step of S3, the user can,
F′4＝f′4a+f′4b+f′4c (6)
(6) of formula (II) F'4Is the voltage conformity f 'of a three-phase electric energy meter and a 3 gamma 57.7V three-phase four-wire electric energy meter'4aThe A phase voltage of the three-phase electric energy meter and the 3 x 57.7V three-phase four-wire electric energy meter is consistent with the mark, and the calculation mode is shown as the formula (7); f'4bThe B-phase voltage of the three-phase electric energy meter and the 3 x 57.7V three-phase four-wire electric energy meter is consistent with the mark, and the calculation mode is shown as the formula (8); f'4cThe C phase voltage of the three-phase electric energy meter and the 3 gamma 57.7V three-phase four-wire electric energy meter are matched and identifiedThe calculation mode is shown as the formula (9);
Figure FDA0002960591820000023
(7) in formula (II) U'4aiCollecting values of A phase voltage of the three-phase electric energy meter at any collecting time;
Figure FDA0002960591820000024
(8) in formula (II) U'4biCollecting a value for the B-phase voltage of the three-phase electric energy meter at any collecting time;
Figure FDA0002960591820000031
(9) in formula (II) U'4ciAnd acquiring a value of the C-phase voltage of the three-phase electric energy meter at any acquisition time.
5. The method for remotely verifying the type of an on-the-fly three-phase electric energy meter based on voltage information as claimed in claim 1, wherein: in the step of S4, the user can,
F3＝f3a+f3b+f3c (11)
(11) in the formula, F3For voltage coincidence between three-phase electric energy meter and 3 x 100V three-phase three-wire electric energy meter3aThe A phase voltage of the three-phase electric energy meter and the 3 gamma 100V three-phase three-wire electric energy meter conforms to the mark, and the calculation mode is shown as the formula (12); f. of3bThe B-phase voltage of the three-phase electric energy meter and the 3 gamma 100V three-phase three-wire electric energy meter conforms to the mark, and the calculation mode is shown as the formula (13); f. of3cThe C phase voltage of the three-phase electric energy meter and the 3 gamma 100V three-phase three-wire electric energy meter conforms to the mark, and the calculation mode is shown as the formula (14);
Figure FDA0002960591820000032
(12) in the formula of U3aiCollecting values of A phase voltage of the three-phase electric energy meter at any collecting time;
Figure FDA0002960591820000033
(13) in the formula of U3biCollecting a value for the B-phase voltage of the three-phase electric energy meter at any collecting time;
Figure FDA0002960591820000034
(14) in the formula of U3ciAnd acquiring a value of the C-phase voltage of the three-phase electric energy meter at any acquisition time.
6. The method for remotely verifying the type of an on-the-fly three-phase electric energy meter based on voltage information as claimed in claim 1, wherein: in step S1, the profile information of the three-phase electric energy meter includes the number and the type of the three-phase electric energy meter.
7. The method for remotely verifying the type of an on-the-fly three-phase electric energy meter based on voltage information as claimed in claim 2, wherein: in step S7, the processor saves the error list and the to-be-verified list in the memory.
8. The method for remotely verifying the type of an on-the-fly three-phase electric energy meter based on voltage information as claimed in claim 2, wherein: in step S7, the processor outputs the error list and the to-be-verified list to a display or a printer.
9. A device for remotely verifying the type of a running three-phase electric energy meter based on voltage information is characterized in that: comprising a memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the steps of any one of the claims 1-8 for remotely verifying the method of operating a three-phase electric energy meter type based on voltage information when executing the computer program.
10. A device for remotely verifying the type of a running three-phase electric energy meter based on voltage information is characterized in that: being a computer readable storage medium, storing a computer program which, when being executed by a processor, carries out the steps of any one of claims 1 to 8 of a method for remotely verifying the operation of a three-phase electric energy meter type on the basis of voltage information.
CN202110237546.9A 2021-03-03 2021-03-03 Method and device for remotely verifying type of three-phase electric energy meter in operation based on voltage information Pending CN112990676A (en)

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