KR101307098B1 - Apparatus and method for automatically correcting transmission error of voltage and current in electric power distribution system - Google Patents

Abstract

PURPOSE: An auto-correction apparatus for the transmission error of the voltage and the current of a power distribution apparatus and a method thereof are provided to correct the error that is present in voltage and current values by further accurate measurement, thereby being operated with high reliability. CONSTITUTION: An auto-correction apparatus for the transmission error includes a first measurement unit, a second measurement unit, a processing unit, and a correction unit. The first measurement unit (110) defines the reference value by measuring the current and voltage values flowing in the power distribution line. The current and the voltage values which are measured in the power distribution apparatus installed in the power distribution line are converted to the predetermined reference ratio in a transducer, and the second measurement unit (120) is provided to be output. The processing unit calculates and processes the error value of conversion value when the ratio of the reference value and the conversion value are not included in the error range of the predetermined reference ratio. The correction unit corrects the conversion value by controlling a variable resistance based on the error value. [Reference numerals] (10) Power distributor; (100) Automatic correction device; (20) Control unit; (30) Power distribution operating system

Description

Automatic correction device and method for transmission error of voltage and current of distributor

The present invention relates to an apparatus and method for automatically correcting an error for measured values of voltage and current, and more particularly, to an apparatus for automatically correcting a transmission error that may occur in voltage and current values measured by a distributor. And to a method.

Grid linkage of renewable energy sources such as solar power generation and wind power generation is expanding. Accordingly, the existing dendritic distribution system has been changed to a loop or mesh system and has been changed to a distribution system in which control elements such as voltage and reactive power control are added. In relation to this, research on distribution system operation plan and operation system is under development. Such research basically requires accurate measurements of voltage and current in high-voltage distribution lines.

Current voltage and current measurements used in power distribution system operation and application development utilize the values transmitted through distribution devices installed in the distribution lines, namely, process switchgear, recloser, ground switchgear, and multi-circuit breaker. However, voltage and current measurements measured and transmitted through these distributors may be used continuously after being set to the reference voltage of the distribution line without any measurement of the line. In addition, the voltage and current sensors of the distributor are continuously generated errors due to degradation and the surrounding environment.

A conventional power distribution system is further described with reference to FIG. 1. The current and voltage values measured by the existing distributor 10 are transmitted to the distribution management system 30 via the control unit 20. Here, the current measurement in the distributor 10 is made through the instrument current transformer (CT). In addition, the voltage measurement in the distributor 10 is made through at least one of an instrument transformer (PT), a CVD type voltage sensor using a capacitor, and an RVD type voltage sensor using a resistor. These current and voltage measurement sensors can be used embedded in or attached to power distribution equipment.

The control unit 20 receives the current and voltage values measured by the distributor 10, and outputs the converted analog voltage and current values according to the received values. This output consists of a voltage ratio of 13200V: 4V and a current ratio of 630A: 0.63A. The reason for performing this conversion is that the higher the value used for digital conversion or for future maintenance, the greater the cost. Thereafter, the converted value is transmitted to the power distribution operating system 30.

However, the values measured at the distributor 10 may not be accurate and may have errors, as mentioned above.

In this regard, the name of the invention is "voltage, current measurement and error correction system and method of the high-voltage system", there is a Korean Patent Publication No. 2010-0029931 published on March 18, 2010.

The present invention corrects the errors that may exist in the voltage and current values measured by the distributors through more accurate measurement to solve the above conventional problems, and the errors that may occur in the transmission of these measured values to the outside It is also an object of the present invention to provide an apparatus and method that can automatically correct.

Automatic correction device of the present invention for solving the above problems is a first measuring unit for defining a reference value by measuring the current and voltage values flowing on the distribution line; A second measuring unit configured to measure a converted value output by converting current and voltage values measured by a power distribution device installed on a distribution line at a predetermined reference ratio by a transducer; A processor configured to calculate an error value of the converted value if the ratio between the reference value and the converted value is not within an error range of the preset reference ratio; And a correction unit configured to correct the converted value by adjusting the variable resistor based on the error value.

In addition, the automatic transmission error correction apparatus, after the correction in the correction unit, characterized in that for transmitting the corrected conversion value back to the processing unit to confirm that the correction is made correctly.

The corrector may further include: an adjuster controller configured to control to correct the converted value according to the error value calculated by the processor; And a regulator including an electric motor for automatically adjusting the variable resistance according to the control.

The processor may further include a time and location information detector configured to detect time and location information of the converted value measured from the second measurement unit; And a data processor configured to calculate an error value based on the reference value when the ratio between the reference value and the converted value is not within an error range of a preset reference ratio.

The automatic correction method of the present invention for solving the above problems comprises the steps of defining a reference value by measuring the current and voltage values flowing on the distribution line; Measuring a converted value output by converting current and voltage values measured by a power distribution device installed on a distribution line at a predetermined reference ratio; Calculating an error value of the conversion value if the ratio of the reference value and the conversion value is not within an error range of the preset reference ratio; And correcting the conversion value by adjusting the variable resistor based on the error value.

In addition, the automatic transmission error correction method is characterized in that, after the correction in the correction step, the corrected conversion value is transferred to the calculation step to confirm that the correction is made correctly.

The correcting step may further include controlling to correct the converted value according to the error value calculated in the calculating step; And automatically adjusting the variable resistor according to the control.

The calculating step may further include detecting time and position information of the measured conversion value from the measuring step of the conversion value; And calculating an error value based on the reference value if the ratio of the reference value and the converted value is not included in the error range of the preset reference ratio.

Automatic correction device of the present invention for solving the above problems is a first measuring unit for defining a reference value by measuring the current and voltage values flowing on the distribution line; A third measuring unit configured to analyze and measure current and voltage values converted into digital values and transmitted to the power distribution operating system; If the ratio between the reference value and the current and voltage values transmitted to the power distribution operating system is not within the error range of the preset reference ratio, the error value of the current and voltage values transmitted to the power distribution operating system is calculated based on the reference value. Processing unit; And a correction unit configured to correct current and voltage values transmitted to the power distribution operating system by adjusting the variable resistor based on the error value.

In addition, the automatic transmission error correction apparatus is characterized in that after the correction in the correction unit, to transmit the corrected current and voltage values back to the processing unit to confirm that the correction is made correctly.

The correction unit may further include: an adjuster controller configured to control to correct current and voltage values transmitted to the power distribution operating system according to the error value calculated by the processor; And a regulator including an electric motor for automatically adjusting the variable resistance according to the control.

The processor may further include: a time and location information detector configured to detect time and location information of current and voltage values transmitted from the third measurement unit to the power distribution operating system; And a data processor configured to calculate an error value based on the reference value when the ratio between the reference value and the current and voltage values transmitted to the power distribution operating system is not included in the error range of the preset reference ratio.

The automatic correction method of the present invention for solving the above problems comprises the steps of defining a reference value by measuring the current and voltage values flowing on the distribution line; Analyzing and measuring current and voltage values converted to digital values and sent to the power distribution operating system; Calculating an error value of the current and voltage values transmitted to the power distribution operating system based on the reference value if the ratio between the reference value and the current and voltage values transmitted to the power distribution operating system is not included in the error range of the preset reference ratio. ; And correcting current and voltage values transmitted to the power distribution operating system by adjusting a variable resistor based on the error value.

In addition, the automatic transmission error correction method is characterized in that, after the correction in the correction step, the corrected current and voltage values are transferred to the calculation step to confirm that the correction is made correctly.

The correcting step may include controlling to correct current and voltage values transmitted to the power distribution operating system according to the error value calculated in the calculating step; And automatically adjusting the variable resistor according to the control.

The calculating step includes detecting time and position information of the measured value from the measuring of current and voltage values transmitted to the power distribution operating system; And calculating an error value based on the reference value if the ratio between the reference value and the current and voltage values transmitted to the power distribution operating system is not included in the error range of the preset reference ratio.

According to the present invention, the error that may occur when the current and voltage value measured in the power distribution device, the current and voltage value measured in the power distribution device to the control unit and the error that may occur when transferring the current and voltage value from the control unit to the outside There is an effect that can be corrected automatically. In addition, the present invention has the advantage that can be applied irrespective of the type of power distribution equipment installed in compliance with the requirements according to the international convention.

Accordingly, in the distribution system operating method and operating system, since the current and voltage values, which are essential elements for their operation, can be measured more precisely and accurately, the operation can be performed more reliably.

1 is a conceptual diagram illustrating an embodiment to which the automatic correction device of the present invention is applied.
2 is a block diagram showing an embodiment to which the automatic correction device of the present invention is applied.
3 is a block diagram illustrating in detail the processing unit included in the automatic correction device of the present invention.
Figure 4 is a block diagram showing another embodiment to which the automatic correction device of the present invention is applied.
5 illustrates a data packet actually transmitted to the power distribution operating system in the automatic calibrating apparatus of the present invention.
6 is a flowchart illustrating an automatic correction method according to an embodiment of the present invention.
7 is a flowchart illustrating an automatic correction method according to another embodiment of the present invention.

The present invention will now be described in detail with reference to the accompanying drawings. Hereinafter, a repeated description, a known function that may obscure the gist of the present invention, and a detailed description of the configuration will be omitted. Embodiments of the present invention are provided to more fully describe the present invention to those skilled in the art. Accordingly, the shapes and sizes of the elements in the drawings and the like can be exaggerated for clarity.

Hereinafter, an embodiment to which the automatic correction device of the present invention is applied will be described with reference to FIG. 1. 1 is a conceptual diagram illustrating an embodiment to which the automatic correction device of the present invention is applied. That is, FIG. 1 illustrates an embodiment in which the automatic correction device 100 of the present invention is applied to the existing power distribution system 10, 20, 30. The automatic correction device 100 of the present invention measures the actual current and voltage values, and functions to correct the current and voltage values measured by the power distribution device. In addition, the automatic correction device 100 of the present invention is the error of the measurement value that may occur in the control unit 20 and the error that may occur in the communication between the control unit 20 and the distributor 10 and the power distribution operating system 30. Can be corrected. This automatic correction device 100 of the present invention is described in more detail with reference to FIGS. 2 and 4 below.

Hereinafter, an embodiment of the present invention will be described in more detail with reference to FIG. 2. An embodiment of the present invention is an error that may occur in the current and voltage values measured in the distributor 10, an error that may occur in the conversion of the current and voltage values in the converter 21 in the control unit 20, and the converter ( Focusing on the correction of errors that may occur in the transfer of current and voltage values to the terminal device 22 in 21).

2 is a block diagram of an embodiment to which the automatic correction device of the present invention is applied. As mentioned above, the automatic calibration device according to an embodiment of the present invention includes a first measuring unit 110, a second measuring unit 120, a correcting unit 130, and a processing unit 140.

First, the first measuring unit 110 measures the actual current and voltage values flowing in the distribution line. The actual current and voltage values measured by the first measurement unit 110 are defined as "reference values". In addition, the measuring equipment used in the first measuring unit 110 may be a device used for measuring the current and voltage in the distributor 10, the existing equipment that is high accuracy and precision for the measurement or to be developed later It can also be In addition, the first measurement unit 110 functions to transmit the reference value to the processing unit 140. Such delivery may be via at least one of wired and wireless.

Thereafter, the second measuring unit 120 measures the analog output value transmitted from the converter 21 to the terminal device 22, that is, a conversion value of the current and voltage values measured from the distributor 10. do. For simplicity in the specification below, these analog output values are referred to as "conversion values". This conversion value is used to check whether there is an error in the current and voltage values measured in the power distribution device 10, as mentioned above. Thereafter, the converted value is transferred to the processing unit 140 for the following processing.

The processor 140 compares the ratio of the reference value transmitted from the first measurement unit 110 to the conversion value received from the second measurement unit 120 and the preset reference ratio, and if the ratio is different, the reference value is determined. The error value of the conversion value is calculated on the basis. Here, the predetermined reference ratio includes a voltage ratio of 13200V: 4V and a current ratio of 630A: 0.63A. However, it is to be appreciated that this predetermined reference ratio is defined to meet the ratio of the converter 21 described above, and may be changed according to a situation or a user-defined ratio. Thereafter, the processor 140 transmits the error value to the corrector 130 again. On the other hand, if these ratios are equal or within an error range, the current and voltage values measured at the distributor 10 are regarded as accurate values. In addition, as described below with reference to FIG. 3, when receiving the reference value and the value received from the controller, the processor 140 may separately record time and location information to assist in future maintenance.

The correction unit 130 functions to actually correct the converted value using the error value received from the processing unit 140. To this end, although not shown in the drawing, the corrector 130 adjusts according to an error value calculated by the processor and an adjuster including an electric motor to automatically adjust the variable resistor included in the converter 21. And an adjuster control unit for controlling the adjuster. The regulator may comprise not only an electric motor, but also all means capable of automatically adjusting the variable resistor. Therefore, when the adjuster controller of the corrector 130 receives the error value transmitted from the processor 140, the adjuster controller instructs the adjuster to perform correction based on the error value. The regulator then adjusts the variable resistor by the error value delivered according to this indication. After the adjustment is made, a check is made to see if the correction has been made correctly. Therefore, when the adjustment process is completed, the corrected value is transferred back to the processing unit 140. When the processor 140 receives the corrected value, the comparison between the reference value and the corrected value ratio and the preset reference ratio is performed again, and the above-described process is performed. This process is repeated until it is determined that the corrected value has been corrected correctly.

Errors that may occur during measurement in the distributor 10, errors that may occur during conversion in the converter 21, or errors that may occur during transmission of measured values from the converter 21 to the terminal device 22 through the foregoing process. Can be corrected.

In addition, although it has been described that the correction is performed based on the measurement of both current and voltage in the foregoing process, only one of the current and the voltage may be measured, and only one of them may be performed.

Hereinafter, referring to FIG. 3, the processing unit 140 included in the automatic correction device according to an embodiment of the present invention will be described in detail. The processor 140 includes a time and location information detector 141 and a data processor 142.

When the processor 140 receives the reference value from the first measuring unit 110 and the converted value from the second measuring unit 120, the time and location information detector 141 detects the time and position information of the converted value. And record it on a recording medium. This information can be used for subsequent maintenance of the distribution equipment or distribution line. These values are then passed to the data processor 142.

The data processor 142 compares the reference value with the converted value. In comparison, the predetermined reference ratio between the reference value and the converted value is 13200V: 4V in voltage and 630A: 0.63A in current. As a result of the comparison, if the ratio between the reference value and the converted value is not 13200V: 4V in voltage or 630A: 0.63A in current, an error value of the converted value is calculated based on the reference value. For example, assume that the voltage of the reference value measured from the first measuring unit 110 is 13200V, the current is 630A, the voltage of the conversion value transferred from the converter 21 is 3.8V, and the current is 0.6A. In this case, since the correct voltage and current values corresponding to the reference value are 4V and 0.63A, respectively, according to a predetermined reference ratio, error values of + 0.2V and + 0.03A are calculated. As another example, if the voltage of the conversion value transferred from the converter 21 is 4.2V and the current is 0.7A, error values of -0.2V and -0.07A are calculated based on the ratio to the reference value. This calculated value is referred to as the error value. Thereafter, the error value is transmitted to the correction unit 130 to correct the converted value. As mentioned above, the predetermined reference ratio may be changed according to the setting of the converter 20 or according to the setting of the user.

In addition, although not shown in the drawings, the processor 140 may include a display and a setting unit to enable the user to check the correction value, the error value, and the error ratio. Through this, the user can set the correction error ratio limit and input information on the maintenance target device, and can improve the data management and reliability of the maintenance work of the user.

Hereinafter, another embodiment of the automatic correction device of the present invention will be described with reference to FIGS. 4 and 5. Another embodiment of the present invention may occur in the process of transmitting the current and voltage values from the terminal device 22 to the power distribution operating system 30, that is, the error occurring during transmission and the conversion to digital values according to international conventions. Focus on the correction of errors. Such another embodiment may be a correction that is additionally performed when the above-described embodiment is not properly performed or when more accurate correction is required. In addition, the embodiment to be described in FIG. 4 may be a correction that may be performed separately or selectively from one embodiment described above.

As mentioned above, the terminal device 22 is a device that can receive a command from the power distribution operating system 30 and perform a remote control function for the power distribution device. In addition, the terminal device 22 can provide an analysis of the cause of the accident to store all the events generated on the distribution line, and transmit the state of the wiring line to the processing unit 140 to process the state monitoring and control from afar. Can be.

The third measurement unit 150 included in the automatic calibration device of the present invention measures the current and voltage values transmitted from the terminal device 22 to the power distribution operating system 30. The third measuring unit 150 may be in the form of a connector. Here, the current and voltage values transmitted to the power distribution operating system 30 are values converted into digital signals according to international conventions including DNP 3.0 and IEC 61850. An example of the digital signal transmitted to the power distribution operating system 30 is shown in FIG. 5.

In FIG. 5, the underlined parts indicate measured values such as voltage and current. The part representing the measured value starts with "1E 02 00". In addition, "01 74 00", "01 78 00" and "01 78 00" represent A phase, B phase and C phase currents, respectively. In addition, "01 A6 31", "01 8C 32" and "01 EC 31" represent the power supply side A phase, B phase and C phase voltages, respectively, and "01 14 32", "01 82 32" and "01 28". 32 "represents load gain A phase, B phase, and C phase voltage, respectively. Since the signal transmitted to the power distribution operating system 30 is converted according to the international convention, the third measuring unit 150 may measure current and voltage values through analysis of the signal. Thereafter, the measured current and voltage values are transferred to the processor 140.

Thereafter, the process performed in the processing unit 140 is similar to the process of processing the transform value, described above with reference to FIG. 3. Therefore, for the clarity of the description, the description of the process performed in the processor 140 will be made except for the overlapping part.

First, the processor 140 receives a reference value from the first measurement unit 110 and a current and voltage value transmitted from the third measurement unit 150 to the power distribution operating system 30. Thereafter, the time position information detector 141 detects time and position information of current and voltage values transmitted from the power distribution operating system 30. As mentioned earlier, this information is later used for maintenance of distribution equipment or distribution lines. These values are then passed to the data processor 142.

Thereafter, a comparison between the reference value and the current and voltage values transmitted from the data processor 142 to the power distribution operating system 30 is performed. In comparison, the ratio between the reference value and the current and voltage value transmitted to the power distribution operating system 30 is 13200V: 4V in voltage and 630A: 0.63A in current. If the ratio of the reference value and the current and voltage value transmitted to the power distribution operating system 30 is not 13200V: 4V in voltage or 630A: 0.63A in current, the power distribution operating system 30 is based on the reference value. Calculate the error value of the current and voltage values transmitted by. As described above, the error value is transmitted to the correction unit 130, and correction is performed so that current and voltage values transmitted to the power distribution operating system 30 are correctly output. In addition, the above-described ratio may vary according to the user's setting and in accordance with the ratio of the converter 21. In addition, although it has been described that the correction is performed based on the measurement of both current and voltage in the foregoing process, only one of the current and the voltage may be measured, and only one of them may be performed.

Hereinafter, an automatic correction method according to an embodiment of the present invention will be described with reference to FIG. 6. An embodiment of the present invention is an error that may occur in the current and voltage values measured by the distributor 10, the error that may occur in the conversion of the current and voltage values, and the error that may occur in the transfer of the current and voltage values Focus on the correction.

6 is a flowchart illustrating an automatic correction method according to an embodiment of the present invention. First, an actual current and voltage value flowing in a distribution line is measured, and step S110 of defining this value as a reference value is performed. The reference value here is the reference current and voltage value that is used for later correction. Therefore, this value should be measured through existing measuring equipment with high accuracy or precision or measuring equipment to be developed in the future.

Thereafter, after the current and voltage values measured by the distributor are converted to a preset reference ratio in the converter, a step S120 of measuring the value output from the converter is performed. In step S120, when the measured current and voltage values are converted, the voltage value measured by the distributor 10 is 13200V: 4V, and the measured current value is converted to a predetermined reference ratio of 630A: 0.63A. That is, if the measured voltage value is 13200V and the current value is 630A, the converted voltage value is 4V and the converted current value is output as 0.63A. In the following, for the sake of brevity of the specification, the converted current value and the converted voltage value are referred to as "conversion value". In addition, as mentioned above, the ratios described above may vary depending on the situation or the user's settings.

Thereafter, a step (S130) of comparing the error range between the reference value and the conversion value and the preset reference ratio is performed. Here, the predetermined reference ratio is 13200V: 4V in voltage and 630A: 0.63A in current. As a result of this comparison, if the ratio of the reference value and the conversion value is within the error range of the preset reference ratio, it is considered that there is no error in the current and voltage values measured in the distributor 10, and the procedure is terminated. . On the other hand, if not, a step (S140) of calculating an error value of the converted value based on the reference value is performed. This error value is used to correct the conversion value measured by the second measurement unit 120, as mentioned above with reference to FIGS. 1 and 2.

Thereafter, the step S150 of correcting the conversion value is performed by adjusting the variable resistance in the converter 21 based on the error value. As mentioned above, the adjustment of this variable resistor is made through a regulator including an electric motor or the like. When this correction is completed, control is passed back to step S130 to confirm that the correction was made correctly. In operation S130, a comparison between the reference value and the corrected value is performed to confirm whether the corrected value is a corrected value. This process is repeated until the corrected value is determined to be corrected.

Hereinafter, an automatic correction method according to another embodiment of the present invention will be described with reference to FIG. 7. Another embodiment of the present invention focuses on the error occurring when transmitting current and voltage values from the terminal device 22 to the power distribution operating system 30 and the correction of errors that may occur when converting them to digital values. Such other embodiments may be additionally made after one embodiment of the present invention is made, or may be performed separately or selectively from one embodiment of the present invention.

7 is a flowchart illustrating an automatic correction method according to another embodiment of the present invention. First, a step of measuring the actual current and voltage values flowing in the distribution line and defining these values as reference values is performed (S210). As mentioned throughout the specification, the reference value is the current and voltage value that becomes the reference used for subsequent correction.

Thereafter, a step (S220) of analyzing and measuring current and voltage values transmitted to the power distribution operating system 30 is performed. Here, the current and voltage values transmitted to the power distribution operating system 30 are values converted into digital signals according to international conventions including DNP 3.0, IEC 61850, and the like.

Thereafter, a step (S230) of comparing the error range between the reference value and the ratio of the current and voltage values transmitted to the power distribution operating system 30 with the preset reference ratio is performed. The preset reference ratio here is 13200V: 4V in voltage and 630A: 0.63A in current. As a result of this comparison, if the ratio between the reference value and the current and voltage values transmitted to the power distribution operating system 30 is within an error range of the preset reference ratio, the current and voltage values transmitted to the power distribution operating system 30 have an error. It is determined that there is no, and this procedure is terminated. On the other hand, if not, calculating the error value of the current and voltage values transmitted to the power distribution operating system 30 based on the reference value (S240) is performed. This error value is used in the correction unit 130 to correct the current and voltage values transmitted to the power distribution operating system 30 through the terminal device 22, as mentioned above.

Thereafter, the step S250 is performed to adjust the variable resistor in the converter 21 based on the error value to correct the current and voltage values transmitted to the power distribution operating system 30. As mentioned above, the adjustment of this variable resistor is made through a regulator including an electric motor or the like. When this correction is completed, control is passed back to step S230 to confirm that the correction was made correctly. In operation S230, a comparison between the reference value and the corrected value is performed to confirm whether the corrected value is a corrected value. This process is repeated until it is determined that the corrected value has been correctly corrected.

As described above, the best embodiment has been disclosed in the drawings and the specification. Although specific terms have been employed herein, they are used for purposes of illustration only and are not intended to limit the scope of the invention as defined in the claims or the claims. Therefore, those skilled in the art will understand that various modifications and equivalent other embodiments are possible from this. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

110: first measuring unit 120: second measuring unit
130: correction unit 140: processing unit
150: third measuring unit

Claims (16)

A first measuring unit defining a reference value by measuring current and voltage values flowing on the distribution line;
A second measurement unit configured to measure a conversion value, at which a current and voltage value measured by a power distribution device installed on the distribution line is converted to a preset reference ratio by a transducer;
A processor configured to calculate an error value of the converted value if the ratio between the reference value and the converted value is not within an error range of the preset reference ratio; And
And a correction unit for correcting the conversion value by adjusting a variable resistor based on the error value. The method of claim 1,
The automatic transmission error correction device,
And after the correction is made in the correction unit, the corrected conversion value is transmitted back to the processing unit to confirm that the correction is made correctly. The method of claim 1,
Wherein,
An adjuster control unit controlling to correct the conversion value according to the error value calculated by the processing unit; And
And a regulator including an electric motor for automatically adjusting the variable resistance according to the control. The method of claim 1,
Wherein,
A time and location information detector for detecting time and location information of the converted value measured from the second measurement unit; And
And a data processor configured to calculate the error value based on the reference value when the ratio between the reference value and the converted value is not within an error range of the preset reference ratio. . Defining a reference value by measuring current and voltage values flowing on the distribution line;
Measuring a converted value output by converting current and voltage values measured by a power distribution device installed on the power distribution line at a predetermined reference ratio;
Calculating an error value of the converted value if the ratio of the reference value and the converted value is not within an error range of the preset reference ratio; And
And correcting the conversion value by adjusting a variable resistor based on the error value. The method of claim 5,
The transmission error automatic correction method,
And after the correction is made in the correction step, the corrected conversion value is transferred to the calculation step to confirm that the correction is made correctly. The method of claim 5,
Wherein the correcting step comprises:
Controlling to correct the conversion value according to the error value calculated in the calculation step; And
And automatically adjusting the variable resistor according to the control. The method of claim 5,
Wherein,
Detecting time and position information of the converted value measured from the measuring of the converted value; And
And calculating an error value based on the reference value if the ratio of the reference value and the converted value is not within an error range of the preset reference ratio. A first measuring unit defining a reference value by measuring current and voltage values flowing on the distribution line;
A third measuring unit configured to analyze and measure current and voltage values converted into digital values and transmitted to the power distribution operating system;
If the ratio between the reference value and the current and voltage values transmitted to the power distribution operating system is not within the error range of a preset reference ratio, the error value of the current and voltage values transmitted to the power distribution operating system based on the reference value. Processing unit for calculating the; And
And a correction unit configured to correct current and voltage values transmitted to the power distribution operating system by adjusting a variable resistor based on the error value. 10. The method of claim 9,
The automatic transmission error correction device,
And after the correction is made in the correcting unit, transmitting the corrected current and voltage values back to the processing unit to confirm that the correcting is performed. 10. The method of claim 9,
Wherein,
A regulator controller configured to control to correct current and voltage values transmitted to the power distribution operating system according to the error value calculated by the processor; And
And a regulator including an electric motor for automatically adjusting the variable resistance according to the control. 10. The method of claim 9,
Wherein,
A time and location information detector for detecting time and location information of current and voltage values transmitted from the third measurement unit to the power distribution operating system; And
And a data processor configured to calculate the error value based on the reference value when the ratio between the reference value and the current and voltage values transmitted to the power distribution operating system is not within the error range of the preset reference ratio. Transmission error automatic correction apparatus. Defining a reference value by measuring current and voltage values flowing on the distribution line;
Analyzing and measuring current and voltage values converted to digital values and sent to the power distribution operating system;
If the ratio between the reference value and the current and voltage values transmitted to the power distribution operating system is not within the error range of a preset reference ratio, the error value of the current and voltage values transmitted to the power distribution operating system based on the reference value. Calculating; And
Correcting the current and voltage values transmitted to the power distribution operating system through adjustment of a variable resistor based on the error value. The method of claim 13,
The transmission error automatic correction method,
And after the correction is made in the correction step, the corrected current and voltage values are transferred to the calculation step to confirm that the correction is made correctly. The method of claim 13,
Wherein the correcting step comprises:
Controlling to correct current and voltage values transmitted to the power distribution operating system according to the error value calculated in the calculating step; And
And automatically adjusting the variable resistor according to the control. The method of claim 13,
Wherein,
Detecting time and position information of the measured value from the measuring of current and voltage values transmitted to the power distribution operating system; And
Calculating an error value based on the reference value if the ratio between the reference value and the current and voltage values transmitted to the power distribution operating system is not within the error range of the preset reference ratio. , Transmission error automatic correction method.

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