CN111896909A - Method and device for correcting error of electric energy meter - Google Patents

Method and device for correcting error of electric energy meter Download PDF

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CN111896909A
CN111896909A CN202010686306.2A CN202010686306A CN111896909A CN 111896909 A CN111896909 A CN 111896909A CN 202010686306 A CN202010686306 A CN 202010686306A CN 111896909 A CN111896909 A CN 111896909A
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electric energy
energy meter
current
voltage
meter
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CN111896909B (en
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姜鹏飞
刘沛
姜智峰
周建涛
李二鹤
范鹏
张勉
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Henan Institute Of Metrology And Testing Science
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Henan Institute of Metrology
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
    • G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
    • G01R35/005—Calibrating; Standards or reference devices, e.g. voltage or resistance standards, "golden" references
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Abstract

本发明提供一种电能表误差修正方法，包括以下步骤：设置电能表检定装置的负载功率因数为1.0，并向标准表施加标准电压和标准电流；获取标准表的测量电压U以及电能表的测量电压UC，计算电压比差BC，并根据

Figure 558285DEST_PATH_IMAGE002
修正电能表的电压；根据标准表的测量电流I以及电能表的测量电流IC，计算电流比差BI；计算电能表与标准表的相对误差r；步骤5，根据电能表与标准表的相对误差r和电流比差BI计算电流比差补偿系数b；步骤6，根据
Figure 644401DEST_PATH_IMAGE004
修正电能表的电流，使得修正后电能表的测量电流等于标准表的测量电流I。

Figure 202010686306

The invention provides an error correction method for an electric energy meter, comprising the following steps: setting the load power factor of the electric energy meter verification device to 1.0, and applying a standard voltage and a standard current to a standard meter; obtaining the measured voltage U of the standard meter and the measurement of the electric energy meter voltage U C , calculate the voltage ratio difference B C , and according to

Figure 558285DEST_PATH_IMAGE002
Correct the voltage of the electric energy meter; calculate the current ratio difference B I according to the measured current I of the standard meter and the measured current I C of the electric energy meter; calculate the relative error r between the electric energy meter and the standard meter; Step 5, according to the The relative error r and the current ratio difference B I calculate the current ratio difference compensation coefficient b; step 6, according to
Figure 644401DEST_PATH_IMAGE004
Correct the current of the electric energy meter so that the measured current of the electric energy meter after the correction is equal to the measured current I of the standard meter.

Figure 202010686306

Description

一种电能表误差修正方法及装置Method and device for correcting error of electric energy meter

技术领域technical field

本发明涉及仪表修正领域，具体的说，涉及了一种电能表误差修正方法及装置。The invention relates to the field of meter correction, in particular to a method and device for correcting errors of an electric energy meter.

背景技术Background technique

尽管电压电流修的与标准表相比非常准了，但是误差仍然大。设计者坚持认为电压电流准了，误差一定准，不再提供更多方法与资料，工作陷入僵局，难以解释是什么原因。后来观察工人现场操作，发现实际的操作步骤是先根据标准表修正电压电流，然后凭经验对电流微调，误差正了电流就低一点，误差负了电流就高一点，反复多次。Although the voltage and current repair is very accurate compared with the standard meter, the error is still large. The designer insists that the voltage and current are accurate, and the error must be accurate, and no more methods and data are provided. The work is deadlocked, and it is difficult to explain the reason. Later, I observed the on-site operation of the workers and found that the actual operation steps are to first correct the voltage and current according to the standard meter, and then fine-tune the current according to experience. If the error is positive, the current will be lower, and if the error is negative, the current will be higher.

为了解决以上存在的问题，人们一直在寻求一种理想的技术解决方案。In order to solve the above problems, people have been looking for an ideal technical solution.

发明内容SUMMARY OF THE INVENTION

本发明的目的是针对现有技术的不足，从而提供了一种电能表误差修正方法及装置，只需一次就能够把误差修正到理想范围内。The purpose of the present invention is to aim at the deficiencies of the prior art, so as to provide a method and device for correcting the error of an electric energy meter, which can correct the error within an ideal range only once.

为了实现上述目的，本发明所采用的技术方案是：一种电能表误差修正方法，包括以下步骤：In order to achieve the above purpose, the technical solution adopted in the present invention is: an error correction method for an electric energy meter, comprising the following steps:

步骤1，设置电能表检定装置的负载功率因数为1.0，并向标准表施加标准电压和标准电流；其中，将标准表的电压回路与电能表的电压回路并联，标准表的电流回路与电能表的电流回路串联；Step 1, set the load power factor of the electric energy meter verification device to 1.0, and apply the standard voltage and standard current to the standard meter; wherein, the voltage loop of the standard meter is connected in parallel with the voltage loop of the electric energy meter, and the current loop of the standard meter is connected to the electric energy meter. The current loops are connected in series;

步骤2，获取标准表的测量电压U以及电能表的测量电压UC，计算电压比差BC，其中

Figure DEST_PATH_IMAGE001
，并根据
Figure DEST_PATH_IMAGE002
修正电能表的电压，使得修正后电能表的测量电压等于标准表的测量电压U；Step 2: Obtain the measured voltage U of the standard meter and the measured voltage U C of the electric energy meter, and calculate the voltage ratio difference B C , where
Figure DEST_PATH_IMAGE001
, and according to
Figure DEST_PATH_IMAGE002
Correct the voltage of the electric energy meter so that the measured voltage of the electric energy meter after the correction is equal to the measured voltage U of the standard meter;

步骤3，根据标准表的测量电流I以及电能表的测量电流IC，计算电流比差BI，其中

Figure DEST_PATH_IMAGE003
；Step 3, according to the measured current I of the standard meter and the measured current I C of the electric energy meter, calculate the current ratio difference B I , where
Figure DEST_PATH_IMAGE003
;

步骤4，计算电能表与标准表的相对误差r，其中，

Figure DEST_PATH_IMAGE004
；Step 4: Calculate the relative error r between the electric energy meter and the standard meter, where,
Figure DEST_PATH_IMAGE004
;

步骤5，根据电能表与标准表的相对误差r和电流比差BI计算电流比差补偿系数b，其中，

Figure DEST_PATH_IMAGE005
，
Figure DEST_PATH_IMAGE006
表示理想误差修正值；Step 5: Calculate the current ratio difference compensation coefficient b according to the relative error r between the electric energy meter and the standard meter and the current ratio difference B I , where,
Figure DEST_PATH_IMAGE005
,
Figure DEST_PATH_IMAGE006
represents the ideal error correction value;

步骤6，根据

Figure DEST_PATH_IMAGE007
修正电能表的电流，使得修正后电能表的测量电流等于标准表的测量电流I。Step 6, according to
Figure DEST_PATH_IMAGE007
Correct the current of the electric energy meter so that the measured current of the electric energy meter after the correction is equal to the measured current I of the standard meter.

基于上述，步骤5中，

Figure 412838DEST_PATH_IMAGE006
=0，此时，电流比差补偿系数
Figure DEST_PATH_IMAGE008
。Based on the above, in step 5,
Figure 412838DEST_PATH_IMAGE006
=0, at this time, the current ratio difference compensation coefficient
Figure DEST_PATH_IMAGE008
.

基于上述，在进行步骤1之前，先进行电能表直流电压的修正；Based on the above, before performing step 1, correct the DC voltage of the electric energy meter first;

在进行步骤6后，设置电能表检定装置的负载功率因数为0.5，进行电能表相位的修正。After performing step 6, set the load power factor of the electric energy meter verification device to 0.5, and perform the correction of the electric energy meter phase.

本发明还提供一种电能表误差修正装置，包括电能表检定装置和标准表，所述电能表检定装置包括电压电流输出模块、电压比差计算模块、电流比差计算模块、电流比差补偿系数计算模块以及修正模块，The present invention also provides an electric energy meter error correction device, including an electric energy meter verification device and a standard meter. The electric energy meter verification device includes a voltage and current output module, a voltage ratio difference calculation module, a current ratio difference calculation module, and a current ratio difference compensation coefficient. calculation module and correction module,

所述电压电流输出模块，与所述标准表连接，用于在负载功率因数为1.0或0.5时，向标准表施加标准电压和标准电流；The voltage and current output module is connected to the standard meter, and is used for applying standard voltage and standard current to the standard meter when the load power factor is 1.0 or 0.5;

所述标准表的电压回路与至少一个电能表的电压回路并联，所述标准表的电流回路与至少一个电能表的电流回路串联；The voltage loop of the standard meter is connected in parallel with the voltage loop of the at least one electric energy meter, and the current loop of the standard meter is connected in series with the current loop of the at least one electric energy meter;

所述电压比差计算模块，用于获取标准表的测量电压U以及每个电能表的测量电压UC，计算每个电能表电压比差BC，其中

Figure 718528DEST_PATH_IMAGE001
；The voltage ratio difference calculation module is used to obtain the measured voltage U of the standard meter and the measured voltage U C of each electric energy meter, and calculate the voltage difference B C of each electric energy meter, wherein
Figure 718528DEST_PATH_IMAGE001
;

所述电流比差计算模块，用于根据标准表的测量电流I以及每个电能表的测量电流IC，计算每个电能表电流比差BI，其中

Figure DEST_PATH_IMAGE009
；The current ratio difference calculation module is used to calculate the current ratio difference B I of each electric energy meter according to the measured current I of the standard meter and the measured current I C of each electric energy meter, wherein
Figure DEST_PATH_IMAGE009
;

所述电流比差补偿系数计算模块，用于计算每个电能表与标准表的相对误差r，并根据每个电能表与标准表的相对误差r和电流比差BI计算每个电能表的电流比差补偿系数b，其中，

Figure DEST_PATH_IMAGE010
，
Figure 907720DEST_PATH_IMAGE005
，
Figure 663449DEST_PATH_IMAGE006
表示理想误差修正值；The current ratio difference compensation coefficient calculation module is used to calculate the relative error r of each electric energy meter and the standard meter, and calculate the relative error r of each electric energy meter and the standard meter and the current ratio difference B I of each electric energy meter. Current ratio difference compensation coefficient b, where,
Figure DEST_PATH_IMAGE010
,
Figure 907720DEST_PATH_IMAGE005
,
Figure 663449DEST_PATH_IMAGE006
represents the ideal error correction value;

所述修正模块，与所述电流比差计算模块、所述电流比差计算模块和所述电流比差补偿系数计算模块，用于根据每个电能表的测量电压UC、电压比差BU和公式

Figure 328086DEST_PATH_IMAGE002
计算补偿电压，并输出补偿电压至对应电能表，进行电能表电压的修正；用于根据每个电能表的测量电流IC、电流比差BI、电流比差补偿系数b和公式
Figure 714331DEST_PATH_IMAGE007
计算补偿电流，并输出补偿电流至对应电能表，进行电能表电流的修正。The correction module, together with the current ratio difference calculation module, the current ratio difference calculation module and the current ratio difference compensation coefficient calculation module, are used to measure the voltage U C and the voltage ratio difference BU according to the measured voltage of each electric energy meter. and formula
Figure 328086DEST_PATH_IMAGE002
Calculate the compensation voltage, and output the compensation voltage to the corresponding electric energy meter to correct the voltage of the electric energy meter; it is used to measure the current I C , the current ratio difference B I , the current ratio difference compensation coefficient b and the formula of each electric energy meter
Figure 714331DEST_PATH_IMAGE007
Calculate the compensation current, and output the compensation current to the corresponding electric energy meter to correct the electric energy meter current.

本发明相对现有技术具有突出的实质性特点和显著的进步，具体的说，本发明根据电能表相对误差值对电流比差进行修正，从而只需一次就能够把电能表相对误差修正到理想范围内，修正效率高；同时通过该修正装置还可以同时对多个电能表进行修正，节约了人力成本和时间成本。Compared with the prior art, the present invention has outstanding substantive features and significant progress. Specifically, the present invention corrects the current ratio difference according to the relative error value of the electric energy meter, so that the relative error of the electric energy meter can be corrected to an ideal value only once. Within the range, the correction efficiency is high; at the same time, the correction device can also correct multiple electric energy meters at the same time, saving labor cost and time cost.

附图说明Description of drawings

图1是本发明所述修正方法的流程示意图。FIG. 1 is a schematic flowchart of the correction method according to the present invention.

图2是本发明所述修正装置的原理框图。FIG. 2 is a functional block diagram of the correction device according to the present invention.

具体实施方式Detailed ways

下面通过具体实施方式，对本发明的技术方案做进一步的详细描述。The technical solutions of the present invention will be further described in detail below through specific embodiments.

如图1所示，一种电能表误差修正方法，包括以下步骤：As shown in Figure 1, an error correction method for an electric energy meter includes the following steps:

步骤1，设置电能表检定装置的负载功率因数为1.0，并向标准表施加标准电压和标准电流；其中，将标准表的电压回路与电能表的电压回路并联，标准表的电流回路与电能表的电流回路串联；Step 1, set the load power factor of the electric energy meter verification device to 1.0, and apply the standard voltage and standard current to the standard meter; wherein, the voltage loop of the standard meter is connected in parallel with the voltage loop of the electric energy meter, and the current loop of the standard meter is connected to the electric energy meter. The current loops are connected in series;

步骤2，获取标准表的测量电压U以及电能表的测量电压UC，计算电压比差BC，其中

Figure 637156DEST_PATH_IMAGE001
，并根据
Figure 884991DEST_PATH_IMAGE002
修正电能表的电压，使得修正后电能表的测量电压等于标准表的测量电压U；Step 2: Obtain the measured voltage U of the standard meter and the measured voltage U C of the electric energy meter, and calculate the voltage ratio difference B C , where
Figure 637156DEST_PATH_IMAGE001
, and according to
Figure 884991DEST_PATH_IMAGE002
Correct the voltage of the electric energy meter so that the measured voltage of the electric energy meter after the correction is equal to the measured voltage U of the standard meter;

步骤3，根据标准表的测量电流I以及电能表的测量电流IC，计算电流比差BI，其中

Figure 445548DEST_PATH_IMAGE003
；Step 3, according to the measured current I of the standard meter and the measured current I C of the electric energy meter, calculate the current ratio difference B I , where
Figure 445548DEST_PATH_IMAGE003
;

步骤4，计算电能表与标准表的相对误差r，其中，

Figure DEST_PATH_IMAGE011
；Step 4: Calculate the relative error r between the electric energy meter and the standard meter, where,
Figure DEST_PATH_IMAGE011
;

步骤5，根据电能表与标准表的相对误差r和电流比差BI计算电流比差补偿系数b，其中，

Figure 935784DEST_PATH_IMAGE005
，
Figure 224201DEST_PATH_IMAGE006
表示理想误差修正值；Step 5: Calculate the current ratio difference compensation coefficient b according to the relative error r between the electric energy meter and the standard meter and the current ratio difference B I , where,
Figure 935784DEST_PATH_IMAGE005
,
Figure 224201DEST_PATH_IMAGE006
represents the ideal error correction value;

步骤6，根据

Figure 272797DEST_PATH_IMAGE007
修正电能表的电流，使得修正后电能表的测量电流等于标准表的测量电流I。Step 6, according to
Figure 272797DEST_PATH_IMAGE007
Correct the current of the electric energy meter so that the measured current of the electric energy meter after the correction is equal to the measured current I of the standard meter.

具体的，如果想一次就把误差修正为0，则将步骤5中,理想误差修正值

Figure 205637DEST_PATH_IMAGE006
预置为0，
Figure 494536DEST_PATH_IMAGE006
=0，此时，电流比差补偿系数
Figure 350541DEST_PATH_IMAGE008
。Specifically, if you want to correct the error to 0 once, then set the ideal error correction value in step 5 to
Figure 205637DEST_PATH_IMAGE006
preset to 0,
Figure 494536DEST_PATH_IMAGE006
=0, at this time, the current ratio difference compensation coefficient
Figure 350541DEST_PATH_IMAGE008
.

具体的，在进行步骤1之前，先进行电能表直流电压的修正；Specifically, before performing step 1, first perform the correction of the DC voltage of the electric energy meter;

在进行步骤6后，设置电能表检定装置的负载功率因数为0.5，进行电能表相位的修正；After performing step 6, set the load power factor of the electric energy meter verification device to 0.5, and correct the phase of the electric energy meter;

通过上述步骤，将电能表检测装置的相对误差修正为0。Through the above steps, the relative error of the electric energy meter detection device is corrected to 0.

本发明还提供一种电能表误差修正装置，如图2所示，包括电能表检定装置和标准表，所述电能表检定装置包括电压电流输出模块、电压比差计算模块、电流比差计算模块、电流比差补偿系数计算模块以及修正模块，The present invention also provides an electric energy meter error correction device, as shown in FIG. 2 , including an electric energy meter verification device and a standard meter. The electric energy meter verification device includes a voltage and current output module, a voltage ratio difference calculation module, and a current ratio difference calculation module. , the current ratio difference compensation coefficient calculation module and the correction module,

所述电压电流输出模块，与所述标准表连接，用于在负载功率因数为1.0或0.5时，向标准表施加标准电压和标准电流；The voltage and current output module is connected to the standard meter, and is used for applying standard voltage and standard current to the standard meter when the load power factor is 1.0 or 0.5;

所述标准表的电压回路与至少一个电能表的电压回路并联，所述标准表的电流回路与至少一个电能表的电流回路串联；The voltage loop of the standard meter is connected in parallel with the voltage loop of the at least one electric energy meter, and the current loop of the standard meter is connected in series with the current loop of the at least one electric energy meter;

所述电压比差计算模块，用于获取标准表的测量电压U以及每个电能表的测量电压UC，计算每个电能表电压比差BC，其中

Figure 425332DEST_PATH_IMAGE001
；The voltage ratio difference calculation module is used to obtain the measured voltage U of the standard meter and the measured voltage U C of each electric energy meter, and calculate the voltage difference B C of each electric energy meter, wherein
Figure 425332DEST_PATH_IMAGE001
;

所述电流比差计算模块，用于根据标准表的测量电流I以及每个电能表的测量电流IC，计算每个电能表电流比差BI，其中

Figure 491639DEST_PATH_IMAGE009
；The current ratio difference calculation module is used to calculate the current ratio difference B I of each electric energy meter according to the measured current I of the standard meter and the measured current I C of each electric energy meter, wherein
Figure 491639DEST_PATH_IMAGE009
;

所述电流比差补偿系数计算模块，用于计算每个电能表与标准表的相对误差r，并根据每个电能表与标准表的相对误差r和电流比差BI计算每个电能表的电流比差补偿系数b，其中，

Figure 279336DEST_PATH_IMAGE010
，
Figure 401400DEST_PATH_IMAGE005
，
Figure 508245DEST_PATH_IMAGE006
表示理想误差修正值；The current ratio difference compensation coefficient calculation module is used to calculate the relative error r of each electric energy meter and the standard meter, and calculate the relative error r of each electric energy meter and the standard meter and the current ratio difference B I of each electric energy meter. Current ratio difference compensation coefficient b, where,
Figure 279336DEST_PATH_IMAGE010
,
Figure 401400DEST_PATH_IMAGE005
,
Figure 508245DEST_PATH_IMAGE006
represents the ideal error correction value;

所述修正模块，与所述电流比差计算模块、所述电流比差计算模块和所述电流比差补偿系数计算模块，用于根据每个电能表的测量电压UC、电压比差BU和公式

Figure 58087DEST_PATH_IMAGE002
计算补偿电压，并输出补偿电压至对应电能表，进行电能表电压的修正；用于根据每个电能表的测量电流IC、电流比差BI、电流比差补偿系数b和公式
Figure 631064DEST_PATH_IMAGE007
计算补偿电流，并输出补偿电流至对应电能表，进行电能表电流的修正。The correction module, together with the current ratio difference calculation module, the current ratio difference calculation module and the current ratio difference compensation coefficient calculation module, are used to measure the voltage U C and the voltage ratio difference BU according to the measured voltage of each electric energy meter. and formula
Figure 58087DEST_PATH_IMAGE002
Calculate the compensation voltage, and output the compensation voltage to the corresponding electric energy meter to correct the voltage of the electric energy meter; it is used to measure the current I C , the current ratio difference B I , the current ratio difference compensation coefficient b and the formula of each electric energy meter
Figure 631064DEST_PATH_IMAGE007
Calculate the compensation current, and output the compensation current to the corresponding electric energy meter to correct the electric energy meter current.

最后应当说明的是:以上实施例仅用以说明本发明的技术方案而非对其限制；尽管参照较佳实施例对本发明进行了详细的说明，所属领域的普通技术人员应当理解：依然可以对本发明的具体实施方式进行修改或者对部分技术特征进行等同替换；而不脱离本发明技术方案的精神，其均应涵盖在本发明请求保护的技术方案范围当中。Finally it should be noted that: the above embodiment is only used to illustrate the technical scheme of the present invention and not to limit it; Although the present invention has been described in detail with reference to the preferred embodiment, those of ordinary skill in the art should understand: The specific embodiments of the invention are modified or some technical features are equivalently replaced; without departing from the spirit of the technical solutions of the present invention, all of them should be included in the scope of the technical solutions claimed in the present invention.

Claims (4)

1.一种电能表误差修正方法，其特征在于，包括以下步骤：1. A method for correcting an error of an electric energy meter, comprising the following steps: 步骤1，设置电能表检定装置的负载功率因数为1.0，并向标准表施加标准电压和标准电流；其中，将标准表的电压回路与电能表的电压回路并联，标准表的电流回路与电能表的电流回路串联；Step 1, set the load power factor of the electric energy meter verification device to 1.0, and apply the standard voltage and standard current to the standard meter; wherein, the voltage loop of the standard meter is connected in parallel with the voltage loop of the electric energy meter, and the current loop of the standard meter is connected to the electric energy meter. The current loops are connected in series; 步骤2，获取标准表的测量电压U以及电能表的测量电压UC，计算电压比差BC，其中
Figure 994869DEST_PATH_IMAGE002
，并根据
Figure 895698DEST_PATH_IMAGE004
修正电能表的电压，使得修正后电能表的测量电压等于标准表的测量电压U；Step 2: Obtain the measured voltage U of the standard meter and the measured voltage U C of the electric energy meter, and calculate the voltage ratio difference B C , where
Figure 994869DEST_PATH_IMAGE002
, and according to
Figure 895698DEST_PATH_IMAGE004
Correct the voltage of the electric energy meter so that the measured voltage of the electric energy meter after the correction is equal to the measured voltage U of the standard meter; 步骤3，根据标准表的测量电流I以及电能表的测量电流IC，计算电流比差BI，其中
Figure 724370DEST_PATH_IMAGE006
；Step 3, according to the measured current I of the standard meter and the measured current I C of the electric energy meter, calculate the current ratio difference B I , where
Figure 724370DEST_PATH_IMAGE006
; 步骤4，计算电能表与标准表的相对误差r，其中，
Figure 898342DEST_PATH_IMAGE008
；Step 4: Calculate the relative error r between the electric energy meter and the standard meter, where,
Figure 898342DEST_PATH_IMAGE008
; 步骤5，根据电能表与标准表的相对误差r和电流比差BI计算电流比差补偿系数b，其中，
Figure 634086DEST_PATH_IMAGE010
，
Figure 82647DEST_PATH_IMAGE012
表示理想误差修正值；Step 5: Calculate the current ratio difference compensation coefficient b according to the relative error r between the electric energy meter and the standard meter and the current ratio difference B I , where,
Figure 634086DEST_PATH_IMAGE010
,
Figure 82647DEST_PATH_IMAGE012
represents the ideal error correction value; 步骤6，根据
Figure 680506DEST_PATH_IMAGE014
修正电能表的电流，使得修正后电能表的测量电流等于标准表的测量电流I。Step 6, according to
Figure 680506DEST_PATH_IMAGE014
Correct the current of the electric energy meter so that the measured current of the electric energy meter after the correction is equal to the measured current I of the standard meter. 2.根据权利要求1所述的电能表误差修正方法，其特征在于：步骤5中，
Figure 36664DEST_PATH_IMAGE012
=0，此时，电流比差补偿系数
Figure 664130DEST_PATH_IMAGE016
。2. The electric energy meter error correction method according to claim 1, characterized in that: in step 5,
Figure 36664DEST_PATH_IMAGE012
=0, at this time, the current ratio difference compensation coefficient
Figure 664130DEST_PATH_IMAGE016
. 3.根据权利要求1所述的电能表误差修正方法，其特征在于：3. The electric energy meter error correction method according to claim 1, is characterized in that: 在进行步骤1之前，先进行电能表直流电压的修正；Before proceeding to step 1, correct the DC voltage of the electric energy meter; 在进行步骤6后，设置电能表检定装置的负载功率因数为0.5，进行电能表相位的修正。After performing step 6, set the load power factor of the electric energy meter verification device to 0.5, and perform the correction of the electric energy meter phase. 4.一种电能表误差修正装置，其特征在于：包括电能表检定装置和标准表，所述电能表检定装置包括电压电流输出模块、电压比差计算模块、电流比差计算模块、电流比差补偿系数计算模块以及修正模块，4. An electric energy meter error correction device, characterized in that it includes an electric energy meter verification device and a standard meter, and the electric energy meter verification device comprises a voltage and current output module, a voltage ratio difference calculation module, a current ratio difference calculation module, and a current ratio difference calculation module. Compensation coefficient calculation module and correction module, 所述电压电流输出模块，与所述标准表连接，用于在负载功率因数为1.0或0.5时，向标准表施加标准电压和标准电流；The voltage and current output module is connected to the standard meter, and is used for applying standard voltage and standard current to the standard meter when the load power factor is 1.0 or 0.5; 所述标准表的电压回路与至少一个电能表的电压回路并联，所述标准表的电流回路与至少一个电能表的电流回路串联；The voltage loop of the standard meter is connected in parallel with the voltage loop of the at least one electric energy meter, and the current loop of the standard meter is connected in series with the current loop of the at least one electric energy meter; 所述电压比差计算模块，用于获取标准表的测量电压U以及每个电能表的测量电压UC，计算每个电能表电压比差BC，其中
Figure DEST_PATH_IMAGE017
；The voltage ratio difference calculation module is used to obtain the measured voltage U of the standard meter and the measured voltage U C of each electric energy meter, and calculate the voltage difference B C of each electric energy meter, wherein
Figure DEST_PATH_IMAGE017
; 所述电流比差计算模块，用于根据标准表的测量电流I以及每个电能表的测量电流IC，计算每个电能表电流比差BI，其中
Figure DEST_PATH_IMAGE018
；The current ratio difference calculation module is used to calculate the current ratio difference B I of each electric energy meter according to the measured current I of the standard meter and the measured current I C of each electric energy meter, wherein
Figure DEST_PATH_IMAGE018
; 所述电流比差补偿系数计算模块，用于计算每个电能表与标准表的相对误差r，并根据每个电能表与标准表的相对误差r和电流比差BI计算每个电能表的电流比差补偿系数b，其中，
Figure DEST_PATH_IMAGE019
，
Figure 455498DEST_PATH_IMAGE010
，
Figure DEST_PATH_IMAGE020
表示理想误差修正值；The current ratio difference compensation coefficient calculation module is used to calculate the relative error r of each electric energy meter and the standard meter, and calculate the relative error r of each electric energy meter and the standard meter and the current ratio difference B I of each electric energy meter. Current ratio difference compensation coefficient b, where,
Figure DEST_PATH_IMAGE019
,
Figure 455498DEST_PATH_IMAGE010
,
Figure DEST_PATH_IMAGE020
represents the ideal error correction value; 所述修正模块，与所述电流比差计算模块、所述电流比差计算模块和所述电流比差补偿系数计算模块，用于根据每个电能表的测量电压UC、电压比差BU和公式
Figure 540653DEST_PATH_IMAGE004
计算补偿电压，并输出补偿电压至对应电能表，进行电能表电压的修正；用于根据每个电能表的测量电流IC、电流比差BI、电流比差补偿系数b和公式
Figure DEST_PATH_IMAGE021
计算补偿电流，并输出补偿电流至对应电能表，进行电能表电流的修正。The correction module, together with the current ratio difference calculation module, the current ratio difference calculation module and the current ratio difference compensation coefficient calculation module, are used to measure the voltage U C and the voltage ratio difference BU according to the measured voltage of each electric energy meter. and formula
Figure 540653DEST_PATH_IMAGE004
Calculate the compensation voltage, and output the compensation voltage to the corresponding electric energy meter to correct the voltage of the electric energy meter; it is used to measure the current I C , the current ratio difference B I , the current ratio difference compensation coefficient b and the formula of each electric energy meter
Figure DEST_PATH_IMAGE021
Calculate the compensation current, and output the compensation current to the corresponding electric energy meter to correct the electric energy meter current.
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