KR101031782B1 - Evaluation method of high voltage generation and recording medium thereof - Google Patents

Abstract

PURPOSE: A method for evaluating high voltage generating source and a recording media of the same are provided to directly evaluate high voltage and current system at the field and calibrate the high voltage and current system based on the result of the evaluation. CONSTITUTION: The ratio error of a movable potential transformer is measured at a national standard organization(S110). The voltage generating source of a evaluating target is in connection with the primary side of the movable potential transformer(S120). The secondary side voltage value of the movable potential transformer is measured using a voltage meter(S130). High voltage generating source is evaluated using the voltage value of high voltage generating source(S140).

Description

Evaluation method of high voltage source and recording medium {Evaluation method of high voltage generation and recording medium}

The present invention relates to an evaluation method for evaluating a high voltage source operating in an industry, and more particularly, to calibrate various devices operated in an industry using a mobile voltage transformer or a current transformer accurately measured by a national standard organization. It is about evaluation method to do.

Recently, as power plants, power exchanges, and KEPCO operate independently, it is important to accurately measure the amount of electricity at the supply and distribution stages. Voltage transformers, current transformers, etc. have been used to accurately measure the amount of power for power plants, substations, and large power consumers.

In addition, the heavy electric equipment industry can be very dangerous to measure the high voltage source and the large current source directly. Therefore, the high voltage source and the large current source are applied to the primary side by using the voltage transformer and the current transformer, and the high voltage and the large current are applied to the primary side and lowered to the rated conversion ratio.

On the other hand, high voltage and high current systems used in the industry need to be periodically calibrated for quality control in accordance with ISO 17025. However, instrument transformer systems, high voltage generators, and large current generators are large and heavy and difficult to transport. In addition, the instrument transformer system, high voltage generator, and large current generator are frequently used for quality control and calibration testing of the product, so it is very difficult to carry the device directly to the national standards organization to evaluate its performance and to be calibrated according to the evaluation. to be.

Therefore, in the technical field to which the present invention belongs, it was required to develop a method for evaluating the instrument transformer system, high voltage, and high current equipments of the industrial field by taking the mobile voltage transformer and the current transformer which are easy to move to the industry and the calibration institution. .

Therefore, the present invention was created to solve the problems described above, an evaluation method for directly evaluating the high voltage and high current system used in the industry in the field, and to calibrate the high voltage and high current system based on the evaluation. The purpose is to provide.

However, the objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned will be clearly understood by those skilled in the art from the following description.

An object of the present invention described above, the step of measuring the error of the mobile voltage transformer 120 in the national standard authority (S110); Connecting the primary side of the high voltage generator 110 to be used in the industry and the moving voltage transformer 120 (S120); Measuring a secondary voltage value of the moving voltage transformer 120 using the voltage meter 130 (S130); And the rated conversion ratio, the measured non-error, and the secondary voltage value are applied to the following equation to obtain a voltage value of the high voltage source 110, and using the obtained voltage value of the high voltage source 110 to generate a high voltage source. Evaluating (110) (S140); can be achieved by providing a high voltage source evaluation method comprising a.

[Equation]

V = N _v V _s (1-α _v )

(Where, V: voltage of the high voltage generating source, N _v: measured value of the voltage meter, α _v:: rated voltage transformer for converting the movement ratio, V _s ratio error of the voltage transformer movement)

In addition, the voltage value measured by the voltage meter 130 and the voltage value of the obtained high voltage source 110 is characterized in that the RMS value.

And, according to the evaluation of the high voltage source 110, the step of correcting the high voltage source 110 based on the equation (S150); characterized in that it further comprises.

On the other hand, an object of the present invention, the step of measuring the error and phase angle error of the voltage transformer 220 for movement in the national standard authority (S210); Connecting the primary side of the industrial voltage transformer 230 to be used in the industry and the primary side of the movable voltage transformer 220 in parallel with the high voltage source 210 for generating a high voltage (S220); Connecting the voltage comparator 240 in series with the secondary side of the industrial voltage transformer 230 and the secondary side of the moving voltage transformer 220 (S230); Obtaining a non-error and phase angle error of the mobile voltage transformer 220 measured by the voltage comparator 240 (S240): and applying the measured error and phase angle error to the following equation to the industrial voltage transformer ( Acquiring the non-error and phase angle error of 230 and evaluating the industrial voltage transformer 230 using the obtained non-error and phase-angle error of the industrial voltage transformer 230 (S250). It can be achieved by providing an industrial voltage transformer evaluation method.

[Equation]

α _x = α _r + α _s

β _x = β _r + β _s

Where α _{x is the} error of the mobile voltage transformer measured by the national standard organization, β _x is the phase angle error of the mobile voltage transformer measured by the national standard organization, and α _{r is the} error of the mobile voltage transformer measured by the voltage comparator. , β _r : Phase angle error of mobile voltage transformer measured by voltage comparator, α _s : Non-error of industrial voltage transformer, β _s : Phase angle error of industrial voltage transformer)

In addition, according to the evaluation of the industrial voltage transformer 230, the step of correcting the industrial voltage transformer 230 based on the equation (S260); characterized in that it further comprises.

In addition, the voltage comparator 240 is characterized in that it is owned by the national standards organization.

In addition, the burden 250 connected in parallel with the secondary side of the mobile voltage transformer 220 is characterized by measuring the voltage transformer 220 for movement using the same burden value in the national standards organization and industry.

On the other hand, an object of the present invention, the step of measuring the error of the moving current transformer 320 in the national standard authority (S310); Connecting the primary side of the large current generator 310 to be used in the industry and the current transformer 320 for movement (S320); Measuring a secondary current value of the moving current transformer 320 using the current meter 330 (S330); And the rated conversion ratio, the measured non-error, and the secondary current value are applied to the following equation to obtain the current value of the large current generator 310, and using the obtained current value of the large current generator 310 to obtain the large current generator. Evaluating (310) (S340); it can be achieved by providing a large current source evaluation method comprising a.

[Equation]

I = N _I I _s (1-α _I )

Where I is the current value of the large current generator, N _I is the rated conversion ratio of the mobile current transformer, I _s is the measured value of the current measuring instrument, and α _I is the non-error of the mobile current transformer.

In addition, the current value measured by the current meter 330 and the obtained current value of the large current source 310 is characterized in that the RMS value.

And, according to the evaluation of the large current generator 310, the step of correcting the large current generator 310 based on the equation (S350); characterized in that it further comprises.

On the other hand, an object of the present invention is to measure the error and phase angle error of the current transformer 420 for movement in the national standard authority (S410); Connecting the primary side of the industrial current transformer 430 to be used in the industry and the primary side of the mobile current transformer 420 with the large current generator 410 for generating a large current (S420); Connecting the current comparator 440 with the secondary side of the industrial current transformer 430 and the secondary side of the mobile current transformer 420 (S430); the error of the mobile current transformer 420 measured by the current comparator 440; And acquiring phase angle error (S440): and applying the measured non-error and phase-angle error to the following equation to obtain the non-error and phase angle error of the industrial current transformer 430, and the obtained industrial current Evaluating the industrial current transformer 430 by using the error and phase angle error of the transformer 430 (S450) can be achieved by providing an industrial current transformer evaluation method comprising a.

[Equation]

α _x = α _r + α _s

β _x = β _r + β _s

Where α _{x is the} error of the mobile current transformer measured by the national standard organization, β _x is the phase angle error of the mobile current transformer measured by the national standard organization, and α _{r is the} error of the mobile current transformer measured by the current comparator. , β _r : Phase angle error of mobile current transformer measured by current comparator, α _s : Non-error of industry current transformer, β _s : Phase angle error of industry current transformer)

In addition, according to the evaluation of the industrial current transformer 430, the step of correcting the industrial current transformer 430 based on the equation (S460); characterized in that it further comprises.

In addition, the current comparator 440 is characterized in that it is owned by the national standards organization.

In addition, the burden 450 connected in series between the secondary side of the mobile current transformer 420 and the current comparator 440 measures that the mobile current transformer 420 is measured using the same burden value in a national standard organization and an industry. It features.

On the other hand, the object of the present invention can be achieved by providing, as another category, a computer readable recording medium having recorded thereon a program for executing an evaluation method.

According to the present invention as described above, there is an effect that can directly evaluate the high voltage and high current system used in the industry, and to calibrate the high voltage and high current system based on the evaluation.

In addition, according to the present invention, the high quality and high current system can be easily calibrated in the field, thereby enabling effective quality control.

The following drawings, which are attached to this specification, illustrate one preferred embodiment of the present invention, and together with the detailed description thereof, serve to further understand the technical spirit of the present invention. It should not be construed as limited.
1 is a configuration diagram for evaluating a high voltage generation source according to the present invention;
2 is a flowchart sequentially showing a procedure for evaluating a high voltage generation source according to the present invention;
3 is a configuration diagram for evaluating an industrial voltage transformer according to the present invention;
4 is a flowchart sequentially showing a sequence for evaluating an industrial voltage transformer according to the present invention;
5 is a configuration diagram for evaluating a large current generating source according to the present invention;
6 is a flowchart sequentially showing a procedure for evaluating a large current generating source according to the present invention;
7 is a configuration diagram for evaluating an industrial current transformer according to the present invention;
8 is a flowchart sequentially showing a procedure for evaluating an industrial current transformer according to the present invention.

Hereinafter, with reference to the drawings will be described a preferred embodiment of the present invention. In addition, one Example described below does not unduly limit the content of this invention described in the Claim, and the whole structure demonstrated by this Embodiment is not necessarily required as a solution of this invention.

<Evaluation method of high voltage source>

1 is a configuration diagram for evaluating a high voltage source according to the present invention, and FIG. 2 is a flowchart sequentially showing a procedure for evaluating a high voltage source according to the present invention.

In order to evaluate the high voltage generator 110 used in the industry according to the present invention, steps S110 to S150 are performed, which will be described below with reference to FIGS. 1 and 2.

First, as shown in FIG. 1, in order to evaluate the high voltage generator 110, the step of measuring the error of the mobile voltage transformer 120 is performed by the Korea Institute of Standards and Science, which is a national standard organization (S110). The voltage transformer 120 has been developed and used to easily measure the various equipment used in each industry.

Next, after measuring the error of the mobile voltage transformer 120, the step of connecting the primary side of the high voltage generator 110 and the mobile voltage transformer 120 to be evaluated that is actually used in the industry (S120) is performed. ).

Next, after connecting the high voltage generator 110 and the primary side of the movable voltage transformer 120, the secondary voltage value of the movable voltage transformer 120 is measured by using the voltage meter 130. (S130). At this time, the secondary voltage value of the mobile voltage transformer 120 measured by the voltage meter 130 is represented by an RMS value.

Next, the voltage value of the high voltage generator 110 is obtained by applying the rated conversion ratio and the error rate of the mobile voltage transformer 120 and the voltage value measured by the voltage meter 130 to the following Equation 1. The voltage value of the high voltage source 110 obtained at this time is calculated as the RMS value. An operation of evaluating the high voltage source 110 is performed using the obtained voltage value of the high voltage source 110 (S140).

(Where, V: voltage of the high voltage generating source, N _v: rated voltage transformer converts the movement ratio, V _s : Measured value of the voltage meter, α _v : Non-error of the moving voltage transformer)

Lastly, according to the evaluation of the high voltage generator 110, the step of calibrating the high voltage generator 110 based on Equation 1 described above is performed (S150). The step of calibrating obtains the RMS voltage value of the high voltage source 110 by the calculation of Equation 1 above, and compares the obtained RMS voltage value with the output voltage value of the high voltage source 110 that is actually used in the industry. The difference is known. Using the difference value, the high voltage source 110 is calibrated.

<Evaluation method of industrial voltage transformer>

3 is a configuration diagram for evaluating an industrial voltage transformer according to the present invention, and FIG. 4 is a flowchart sequentially showing a procedure for evaluating an industrial voltage transformer according to the present invention.

In order to evaluate the voltage transformer 230 used in the industry according to the present invention, steps S210 to S260 are performed, which will be described below with reference to FIGS. 3 and 4.

First, as shown in Figure 3, in order to evaluate the industrial voltage transformer 230 according to the present invention, the step of measuring the error and phase angle error of the mobile voltage transformer 220 in the Korea Research Institute of Standards and Science It will be performed (S210). In this case, the error and phase angle error of the mobile voltage transformer 220 to be measured may be accurately measured to accurately calibrate various equipment operated in the industrial field.

Next, after measuring the error and phase angle error of the mobile voltage transformer 220 at the Korea Research Institute of Standards and Science, the primary side of the industrial voltage transformer 230 and 1 of the mobile voltage transformer 220 actually operated in the industry. The vehicle side is performed in parallel with the high voltage generator 210 operating in the industry (S220).

Next, the step of connecting the voltage comparator 240 owned by the Korea Research Institute of Standards and Science in series with the secondary side of the industrial voltage transformer 230 and the secondary side of the moving voltage transformer 220 (S230). The secondary side of the industrial voltage transformer 230 is connected to the S terminal of the voltage comparator 240, and the secondary side of the movable voltage transformer 220 is connected to the X terminal of the voltage comparator 240. At this time, the burden 250 connected in parallel with the secondary side of the mobile voltage transformer 220 should measure the mobile voltage transformer 220 at the same burden value in the Korea Research Institute of Standards and Science.

Next, the step of acquiring the error and phase angle error of the moving voltage transformer 220 measured by the voltage comparator 240 is performed (S240).

Next, the error and phase angle error of the mobile voltage transformer 220 measured by the national standards organization and the error and phase angle error of the mobile voltage transformer 220 measured by the voltage comparator 240 are represented by the following [Equation 5] 2]. By using Equation 2, the error and phase angle error of the industrial voltage transformer 230 are obtained, and the industrial voltage transformer 230 is obtained by using the obtained error and phase angle error of the industrial voltage transformer 230. Evaluation is performed (S250).

Where α _{x is the} error of the mobile voltage transformer measured by the national standard organization, β _x is the phase angle error of the mobile voltage transformer measured by the national standard organization, and α _{r is the} error of the mobile voltage transformer measured by the voltage comparator. , β _r : Phase angle error of mobile voltage transformer measured by voltage comparator, α _s : Non-error of industrial voltage transformer, β _s : Phase angle error of industrial voltage transformer)

Finally, according to the evaluation of the industrial voltage transformer 230, the industrial voltage transformer 230 is calibrated based on Equation 2 (S260). In the above Equation 2, the error and phase angle error of the mobile voltage transformer measured by the national standard authority is subtracted from the error and phase angle error of the mobile voltage transformer measured by the voltage comparator. You get each error. At this time, the industrial voltage transformer 230 is calibrated by using the acquired error and phase angle error.

On the other hand, Table 1 below is an example of the evaluation results of the error of the industrial voltage transformer using a mobile voltage transformer, [Table 2] is an evaluation result of the phase angle error of the industrial voltage transformer using a mobile voltage transformer An example is shown. In this case, the unit of [Table 1] is%, and the unit of [Table 2] is min.

Rated conversion ratio Non-errors of Mobile Voltage Transformers Measured by the National Standards Institute Error of Moving Voltage Transformer Measured by Voltage Comparator Non-errors in Industrial Voltage Transformers 110V: 110V -0.041 -0.008 -0.033 220V: 110V -0.047 -0.018 -0.029 440 V: 110 V -0.030 -0.004 -0.026 550 V: 110 V -0.030 -0.002 -0.028

Rated conversion ratio Phase Angle Error of Mobile Voltage Transformer Measured by National Standards Institute Phase Angle Error of Moving Voltage Transformer Measured by Voltage Comparator Phase Angle Error of Industrial Voltage Transformers 110V: 110V 1.54 1.24 0.30 220V: 110V 1.53 1.35 0.18 440 V: 110 V 1.38 1.22 0.16 550 V: 110 V 1.21 1.09 0.12

When the industry provides the error and phase angle error of the industrial voltage transformer which are the values measured in [Table 1] and [Table 2], the industry determines whether to continue using the voltage transformer according to the KSC 1706 standard.

<Evaluation method of large current generating source>

5 is a configuration diagram for evaluating a large current generating source according to the present invention, Figure 6 is a flow chart showing a sequence for evaluating the large current generating source according to the present invention.

In order to evaluate the large current generator 310 used in the industry according to the present invention, steps S310 to S350 are performed, which will be described below with reference to FIGS. 5 and 6.

First, as shown in FIG. 5, in order to evaluate the large current generator 310, the step of measuring the error of the mobile current transformer 320 is performed by the Korea Research Institute of Standards and Science, which is a national standard organization (S310). The current transformer 320 is developed and used to easily move a variety of equipment used in each industry to measure.

Next, after measuring the non-error of the mobile current transformer 320, it is actually used in the industry, and performs the step of connecting the primary side of the large current generator 310 and the mobile current transformer 320 to be evaluated ( S320).

Next, after the large current generator 310 and the primary side of the mobile current transformer 320 are connected, the secondary current value of the mobile current transformer 320 is measured using the current meter 330. (S330). At this time, the secondary current value of the mobile current transformer 320 measured by the current meter 330 is represented by an RMS value.

Next, the current value of the large current generating source 310 is obtained by applying the current value measured by the rated conversion ratio and the non-error and the current measuring unit 130 of the mobile current transformer 320 to the following [Equation 3]. At this time, the obtained current value of the large current generator 310 is calculated as an RMS value. The step of evaluating the large current generator 310 using the obtained current value of the large current generator 310 is performed (S340).

Where I is the current value of the large current generator, N _I is the rated conversion ratio of the mobile current transformer, I _s : measured value of current measuring instrument, α _I : non-error of mobile current transformer)

Lastly, according to the evaluation of the large current generator 310, the step of calibrating the large current generator 310 based on Equation 3 described above is performed (S350). The step of calibrating obtains the RMS current value of the large current generator 310 by the calculation of Equation 3 above, and compares the obtained RMS current value with the output current value of the large current generator 310 operating in an actual industry. The difference is known. The large current generator 310 is calibrated using this difference value.

<Evaluation method of industrial current transformer>

7 is a configuration diagram for evaluating an industrial current transformer according to the present invention, and FIG. 8 is a flowchart sequentially showing a procedure for evaluating an industrial current transformer according to the present invention.

In order to evaluate the current transformer 430 used in the industry according to the present invention, steps S410 to S460 are performed, which will be described below with reference to FIGS. 7 and 8.

First, as shown in Figure 7, in order to evaluate the industrial current transformer 430 according to the present invention, the step of measuring the error and phase angle error of the mobile current transformer 420 in the Korea Research Institute of Standards and Science It is performed (S410). At this time, the non-error and phase angle error of the mobile current transformer 420 to be measured must be accurately measured to accurately calibrate various equipment operating in the industrial field. Therefore, the precise measurement of the mobile current transformer 420 is made by the Korea Research Institute of Standards and Science, a national standard organization.

Next, after measuring the error and phase angle error of the mobile current transformer 420 in the Korea Research Institute of Standards and Science, the primary side of the industrial current transformer 430 that is actually operating in the industry and 1 of the mobile current transformer 420. The vehicle side is connected in series with the large current generator 410 being operated in the industry (S420).

Next, the step of connecting the current comparator 440 owned by the Korea Research Institute of Standards and Science with the secondary side of the industrial current transformer 430 and the secondary side of the mobile current transformer 420 (S430). One terminal of the secondary side of the industrial current transformer 430 is connected to the K _S terminal of the current comparator 440, the other terminal is connected to the terminal I, and the terminal I is grounded. In addition, one terminal of the secondary side of the mobile current transformer 420 is connected to the K _X terminal of the current comparator 440, the other terminal is connected to the terminal I, and the terminal I is grounded. At this time, the burden 450 connected in series with the secondary side of the mobile current transformer 420 should measure the mobile current transformer 420 at the same burden value in the Korea Research Institute of Standards and Science.

Next, a step of acquiring the error and phase angle error of the moving current transformer 420 measured by the current comparator 440 is performed (S440).

Next, the error and phase angle error of the mobile current transformer 420 measured by a national standard organization and the error and phase angle error of the mobile current transformer 420 measured by the current comparator 440 are expressed as follows. 4]. Equation 4 obtains the error and phase angle error of the industrial current transformer 430, using the obtained industry current transformer 430 and the error and phase angle error of the industrial current transformer 430 An evaluation step is performed (S450).

Where α _{x is the} error of the mobile current transformer measured by the national standard organization, β _x is the phase angle error of the mobile current transformer measured by the national standard organization, and α _{r is the} error of the mobile current transformer measured by the current comparator. , β _r : Phase angle error of mobile current transformer measured by current comparator, α _s : Non-error of industry current transformer, β _s : Phase angle error of industry current transformer)

Finally, according to the evaluation of the industrial current transformer 430, the industrial current transformer 430 is calibrated based on Equation 4 described above (S460). In the above Equation 4, the error and phase angle error of the mobile current transformer measured by the National Standards Institute are subtracted from the error and phase angle error of the mobile current transformer measured by the current comparator. You get each error. At this time, the industrial current transformer 230 is calibrated using the acquired error and phase angle error.

On the other hand, Table 3 below is an example of the evaluation results of the error of the industrial current transformer, Table 4 shows an example of the evaluation results of the phase angle error of the industrial current transformer. In this case, the unit of [Table 3] is%, and the unit of [Table 4] is min.

Rated conversion ratio Non-error of Mobile Current Transformer Measured by National Standards Institute Ratio Error of Moving Current Transformer Measured by Current Comparator Non-errors in Industrial Current Transformers 10A: 5A -0.024 -0.002 -0.022 50A: 5A -0.023 -0.003 -0.020 100A: 5A -0.016 -0.004 -0.012 750A: 5A -0.011 -0.001 -0.010

Rated conversion ratio Phase Angle Error of Mobile Transformer Transformer Measured by National Standards Institute Phase Angle Error of Moving Current Transformer Measured by Voltage Comparator Phase Angle Error of Industrial Current Transformer 10A: 5A 1.32 1.21 0.11 50A: 5A 1.41 1.31 0.10 100A: 5A 1.33 1.22 0.11 750A: 5A 1.19 1.09 0.10

If the industry provides the error and phase angle error of the industrial current transformer, which are the values measured in [Table 3] and [Table 4], the industry determines whether to continue using the current transformer according to the KSC 1706 standard.

<Recording medium>

The invention can also be embodied as computer readable code on a computer readable recording medium. Computer-readable recording media include all kinds of recording devices that store data that can be read by a computer system. Examples of computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, floppy disks, optical data storage devices, and the like, which are also implemented in the form of carrier waves (for example, transmission over the Internet). Include. The computer readable recording medium can also be distributed over network coupled computer systems so that the computer readable code is stored and executed in a distributed fashion. In addition, functional programs, codes, and code segments for implementing the present invention can be easily inferred by programmers in the art to which the present invention belongs.

As mentioned above, although demonstrated with reference to one Embodiment of this invention, this invention is not limited to this, A various deformation | transformation and an application are possible. That is, those skilled in the art will readily appreciate that many modifications are possible without departing from the spirit of the invention.

110: high voltage source
120: moving voltage transformer
130: voltage measuring instrument
210: high voltage source
220: moving voltage transformer
230: industrial voltage transformer
240: voltage comparator
250: burden
310: large current generating source
320: mobile current transformer
330: current measuring instrument
410: large current generating source
420: current transformer for movement
430: industrial current transformer
440: current comparator
450: burden

Claims (15)

Measuring the error of the moving voltage transformer 120 in a national standard organization (S110);
Connecting the high voltage generator (110) to be used in the industry and the primary side of the movable voltage transformer (S120);
Measuring a secondary voltage value of the movable voltage transformer 120 using a voltage meter 130 (S130); And
The voltage conversion factor of the voltage transformer 120, the non-error, and the secondary voltage value is applied to the following equation to obtain a voltage value of the high voltage generator 110, the obtained high voltage generator 110 Evaluating the high voltage source (110) using the voltage value of (S140).
[Equation]
V = N _v V _s (1-α _v )
(Where, V: voltage of the high voltage generating source, N _v: rated voltage transformer converts the movement ratio, V _s : Measured value of the voltage meter, α _v : Non-error of the moving voltage transformer)
The method of claim 1,
And the voltage value measured by the voltage meter (130) and the obtained voltage value of the high voltage source (110) are RMS values.
The method of claim 1,
And calibrating the high voltage source (110) based on the equation according to the evaluation of the high voltage source (110) (S150).
delete delete delete delete delete delete delete delete delete delete delete A computer-readable recording medium having recorded thereon a program for executing the evaluation method according to any one of claims 1 to 3.

Images