KR101169936B1 - Voltage transformer measurement system for ratio correction factor and phase displacement, calculation method using the same, and recording medium thereof - Google Patents

Abstract

The present invention relates to a voltage transformer measuring system for measuring a non-calibration factor and phase error, and an evaluation method using the same, and calculates the non-calibration factor and phase error from the zero burden and the external burden. Therefore, the present invention relates to an invention for calculating and evaluating a non-correction factor and a phase error in a desired second burden. For this purpose, the control means 200 calculates a non-correction factor and phase error of the industrial voltage transformer 130 at zero burden without external burden (S110); Calculating, by the control means 200, the non-correction factor and the phase error of the industrial voltage transformer 130 at the first load 151 (S120); And calculating, by the control means 200, the non-correction factor and the phase error of the industrial voltage transformer 130 at the second burden 153 based on the non-correction factor and the phase error (S130). Disclosed is a method for evaluating a voltage transformer using an uncorrection factor and a phase error.

Description

Voltage transformer measurement system for measuring non-calibration factor and phase error, evaluation method using the same, and recording medium thereof {Voltage transformer measurement system for ratio correction factor and phase displacement, calculation method using the same, and recording medium}

The present invention relates to a voltage transformer measuring system for measuring a non-calibration factor and a phase error, and an evaluation method using the same. More specifically, the non-calibration factor and phase error are respectively determined in a zero burden and an external burden. The present invention relates to an invention for calculating and evaluating a non-correction factor and a phase error in a desired second burden using the same.

Voltage transformers and current transformers are the key equipment used in the heavy electric equipment industry for high voltage, large current, and power loss measurements. Therefore, the most common method used to calibrate a voltage transformer is to use a standard voltage transformer having the same rated conversion ratio as the voltage transformer under test and having an accuracy of 10 times or more. The secondary voltage of the standard voltage transformer is compared with the secondary voltage of the voltage transformer under test to measure the uncorrected factors and the phase error of the voltage transformer under measurement.

On the other hand, according to IEC 60044-2 and ANSI C57.13, the international standard for voltage transformer testing, the uncorrected factor and phase error of the voltage transformer under test are measured by connecting an external load in parallel to the secondary side of the voltage transformer under test. At this time, two different external burdens should be measured, and the external burden values required by IEC 60044-2 and ANSI C57.13 are different.

Thus, users of industrial voltage transformers have different burden values as they test voltage transformers in the field under different conditions from those measured under the IEC or ANSI standard in a standard room environment. Therefore, industrial voltage transformer users are required to measure the uncorrected factor and phase error of voltage transformer according to the burden of new field environment.

Therefore, in the technical field to which the present invention belongs, theoretically the non-compensation factor and the phase error are measured without the measurement of the non-calibration factor and phase error measured at two different burdens of the voltage transformer according to the IEC or ANSI standard. It required development of a way to get it.

Accordingly, the present invention was created to solve the problems described above, and calculates and evaluates the non-compensation factor and the phase error in the second burden by using the non-correction factor and the phase error measured at any different burden. It is an object of the present invention to provide a method and system which can be used.

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

The object of the present invention described above, the control means 200 calculates the non-correction factor and phase error of the industrial voltage transformer 130 in the zero burden without external burden (S110); Calculating, by the control means 200, the non-correction factor and the phase error of the industrial voltage transformer 130 at the first load 151 (S120); And calculating, by the control means 200, the non-correction factor and the phase error of the industrial voltage transformer 130 at the second burden 153 based on the non-correction factor and the phase error (S130). It can be achieved by providing a voltage transformer evaluation method using a non-correction factor and a phase error.

In addition, the non-compensation factor at zero burden is characterized in that it is calculated based on the following [Equation]

[Mathematical Expression]

:영부담에서 비보정인자,

:영부담에서 비오차)(here,

In non-compensation factor,

: It is rainy at zero burden)

In addition, the non-correction factor in the first burden 151 is characterized in that it is calculated based on the following [Equation].

[Mathematical Expression]

:제1부담에서 비보정인자,

:제1부담에서 비오차)(here,

In the first burden, the non-calibration factor,

: Rainy at first burden)

In addition, the non-correction factor in the second burden 153 is characterized in that it is calculated based on the following [Equation].

[Mathematical Expression]

:제2부담에서 비보정인자,

:영부담에서 비보정인자,

:제2부담에서 컨덕턴스,

:제2부담에서 서셉턴스,

:누설 저항,

:누설 리액턴스,

:영부담에서 위상오차)(here,

In the second burden, the non-calibration factor,

In non-compensation factor,

In conductance 2,

In the second part, susceptance,

A: Leakage resistance,

Leakage reactance,

: Phase error in zero burden

In addition, the phase error in the second burden 153 is characterized in that it is calculated based on the following [Equation].

[Mathematical Expression]

:제2부담에서 위상오차,

:영부담에서 위상오차,

:영부담에서 비보정인자,

:제2부담에서 컨덕턴스,

:제2부담에서 서셉턴스,

:누설 저항,

:누설 리액턴스,

:영부담에서 위상오차)(here,

In phase 2, phase error,

: Phase error in zero burden,

In non-compensation factor,

In conductance 2,

In the second part, susceptance,

A: Leakage resistance,

Leakage reactance,

: Phase error in zero burden

In addition, the control means 200 evaluates the non-correction factor and the phase error calculated using the non-correction factor and the phase error measured in the second burden 153 (S140).

On the other hand, an object of the present invention, the control means 200 to calculate the non-correction factor and phase error of the industrial voltage transformer 130 in the first burden (151) (S110); Calculating, by the control means 200, the non-correction factor and the phase error of the industrial voltage transformer 130 at zero burden without external burden (S120); And calculating, by the control means 200, the non-correction factor and the phase error of the industrial voltage transformer 130 at the second burden 153 based on the non-correction factor and the phase error (S130). It can be achieved by providing a voltage transformer evaluation method using a non-correction factor and a phase error.

On the other hand, an object of the present invention is another category, voltage transformer measuring device 100 for measuring the non-correction factor and phase error of the industrial voltage transformer 130 used in the industry at any burden; And a control means for calculating a non-correction factor and a phase error of the industrial voltage transformer 130 at a desired burden based on the non-correction factor and the phase error. It can be achieved by providing a transformer measuring system.

 In addition, the arbitrary burden is the first burden 151 with the zero burden and the external burden which has no external burden, and the target burden is the second burden 153 which is different from the zero burden and the first burden 151. It is characterized by the).

In addition, the voltage transformer measuring apparatus 100 includes: a high voltage generator 110 generating a high voltage; a moving voltage transformer 120 in which the high voltage generator 110 and the primary side are connected in parallel; A voltage comparator 140 connected in series with the secondary side of the moving voltage transformer 120; An industrial voltage transformer 130 in which the high voltage generator 110 and the primary side are connected in parallel, and the voltage comparator 140 and the secondary side are connected in series; And a first load 151 connected in parallel with the secondary side of the industrial voltage transformer 130.

In addition, the voltage comparator 140 is characterized in that the voltage comparator of the national standards organization.

In addition, the mobile voltage transformer 120 is characterized in that the voltage transformer of the national standards organization.

In addition, the non-compensation factor in the zero burden is characterized in that it is calculated based on the following equation.

[Mathematical Expression]

:영부담에서 비보정인자,

:영부담에서 비오차)(here,

In non-compensation factor,

: It is rainy at zero burden)

And, the non-correction factor in the first burden 151 is characterized in that it is calculated based on the following [Equation].

[Mathematical Expression]

:제1부담에서 비보정인자,

:제1부담에서 비오차)
(here,

In the first burden, the non-calibration factor,

: Rainy at first burden)

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 a voltage transformer evaluation method using a non-calibration factor and a phase error.

According to the present invention as described above, it is possible to calculate and evaluate the non-correction factor and the phase error in the target third burden by using the non-correction factor and the phase error measured at arbitrary different burdens.

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 showing the configuration of a voltage transformer measuring system according to the present invention,
2 is a configuration diagram showing in detail the voltage transformer measuring apparatus according to the present invention;
3 is a configuration diagram for measuring the non-calibration factor and phase error of the voltage transformer measuring apparatus at zero burden according to the present invention;
4 is a configuration diagram for measuring a non-correction factor and phase error of the voltage transformer measuring apparatus in the first load according to the present invention;
5 is a configuration diagram for measuring a non-calibration factor and phase error of the voltage transformer measuring apparatus in the second burden according to the present invention;
6 and 7 are flowcharts sequentially illustrating a method of evaluating a voltage transformer using an uncorrection factor and a phase error according to the present invention.

Hereinafter, with reference to the drawings will be described a preferred embodiment of the present invention. In addition, the embodiment described below does not unduly limit the content of the present invention described in the claims, and the entire structure described in this embodiment is not necessarily essential as the solution means of the present invention.

< With non-calibration factors Phase error  Configuration of Measuring Voltage Transformer Measurement System>

1 is a configuration diagram showing the configuration of the voltage transformer measuring system according to the present invention, Figure 2 is a configuration diagram showing a voltage transformer measuring apparatus according to the present invention in detail, Figure 3 is a voltage transformer in the zero burden according to the present invention 4 is a configuration diagram for measuring the non-calibration factor and phase error of the measuring apparatus, and FIG. 4 is a configuration diagram for measuring the non-calibration factor and phase error of the voltage transformer measuring apparatus in the first load according to the present invention.

1 and 2, the voltage transformer measuring system for measuring the non-calibration factor and the phase error according to the present invention preferably comprises a voltage transformer measuring device 100 and the control means 200. . Hereinafter, a configuration of a voltage transformer measuring system for measuring a non-correction factor and a phase error according to the present invention will be described with reference to FIGS. 1 to 4.

The voltage transformer measuring device 100 according to the present invention is a device for measuring the uncorrected factor and phase error of the industrial voltage transformer 130 used in the industry. Accordingly, the voltage transformer measuring apparatus 100 is composed of an approximately high voltage generator 110, a movable voltage transformer 120, an industrial voltage transformer 130, a voltage comparator 140, and a load 150, and thus the industrial voltage transformer 130. We can measure the non-calibration factor and phase error.

The high voltage generator 110, which is a component of the above-described voltage transformer measuring device 100, is a device for generating a high voltage as shown in FIGS. 3 to 4, the movable voltage transformer 120 and the industrial voltage transformer 130. Are connected in parallel with the primary sides 121 and 131, respectively. And any one intersection of each device connected in parallel is grounded (160).

In addition, the mobile voltage transformer 120 is a voltage transformer owned by the Korea Research Institute of Standards and Science, a national standard organization, and the primary side 121 is parallel to the primary side 131 of the high voltage generator 110 and the industrial voltage transformer 130. The secondary side 122 is connected in series with the voltage comparator 140. At this time, it is connected to the S terminal 141 of the voltage comparator 140. The moving voltage transformer 120 moves to an industrial site and measures the rain and phase errors at the Korea Research Institute of Standards and Science before measuring the error and phase error of the industry voltage transformer 130. However, the configuration of the measuring device for measuring the moving voltage transformer 120 is the same as the configuration of the voltage transformer measuring device 100. However, instead of the voltage transformer possessed by the industry, the mobile voltage transformer is measured, and a voltage transformer having a higher precision than the mobile voltage transformer 120 becomes a standard voltage transformer.

In addition, the industrial voltage transformer 130 is a voltage transformer used in an industrial field, and the primary side 131 is connected to the primary side 121 of the high voltage generator 110 and the movable voltage transformer 121, and the secondary side ( 132 is connected to the X terminal 142 of the voltage comparator 140. 3 to 4, the secondary side 132 of the industrial voltage transformer 130 has a leakage impedance 155, and the secondary side 132 is connected in parallel with the load 150. However, the burden 150 may be divided into a zero burden, a first burden 151, and a second burden 153 having no external burden.

In addition, the voltage comparator 140 is a voltage comparator held by the Korea Research Institute of Standards and Science, a national standard organization. The secondary side 122 of the mobile voltage transformer 120 and the secondary side 132 of the industrial voltage transformer 130 are described above. ) In series with each other. The voltage comparator 140 having the above-described configuration compares the voltage of the secondary side 122 of the mobile voltage comparator with the voltage of the secondary side 132 of the industrial voltage comparator to calculate the non-calibration factor and phase error of the mobile voltage comparator 120. do.

In addition, the burden 150 is connected in parallel with the secondary side 132 of the industrial voltage transformer 130, and the same burden value should be used when measuring the mobile voltage transformer 120 in each of the national standards organization and the industry. This load 150 is a load connected between the secondary terminals of the instrument transformer, and is expressed by the apparent power consumed by the load under the rated secondary current or the rated secondary voltage of the rated frequency and the power factor of the load. Hereinafter, unless otherwise specified, the term burden 150 is used in the same sense.

Meanwhile, the burden 150 is divided into a zero burden, a first burden 151, and a second burden 153, as shown in FIGS. 3 to 5, wherein the zero burden means a burden without external burden, The first and second burdens 151 and 153 have an external burden and represent different burden values.

The control means 200 according to the present invention uses the non-compensation factor and phase error of the industrial voltage transformer 130 at zero and first load 151 and the non-compensation factor and phase at the second burden 153. Calculate the error. The control means 200 having the above-described functions may be any calculation device capable of calculating a computer or a notebook. However, it will be apparent to those skilled in the art that the present invention is not limited thereto but may be embodied in the present invention as long as it can be simply configured using a microprocessor or the like.

In addition, the equations required for calculating the non-correction factor and phase error in the second burden 153 calculated by the control means 200 will be described in the method invention described below.

< With non-calibration factors Phase error  Evaluation Method of Voltage Transformer Using

5 is a configuration diagram for measuring the non-calibration factor and phase error of the voltage transformer measuring apparatus in the second burden according to the present invention, Figure 6 and Figure 7 is a voltage transformer evaluation using the non-calibration factor and phase error according to the present invention A flowchart showing the method sequentially. 6 and 7 illustrate an embodiment of a method of evaluating a voltage transformer using a non-compensation factor and a phase error according to the present invention, which can be performed by a voltage transformer measuring system for measuring a phase error and an uncorrection factor having the above-described configuration. have.

Hereinafter, a method of evaluating a voltage transformer using an uncorrection factor and a phase error according to the present invention will be described with reference to FIGS. 5 to 7. This step is to perform approximately steps S100 to S140.

First, the step of measuring the non-error and phase error of the mobile voltage transformer 120 in the National Institute of Standards and Science, a national standard organization (S100). Hereinafter, the non-error and phase error of the measured voltage transformer 120 are used.

Next, the industrial voltage transformer 130 at zero load using the non-error and phase error of the mobile voltage transformer 120 measured by the control means 200 and the non-error and phase error measured by the voltage comparator 140. Computing the non-correction factor and the phase error of (S110).

At this time, the error and the phase error of the industrial voltage transformer 130 is calculated based on Equation 1 below.

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

Then, the non-compensation factor of the industrial voltage transformer 130 at zero burden is calculated by Equation 2 below.

:영부담에서 산업체 전압변성기의 비보정인자,

:영부담에서 산업체 전압변성기의 비오차)
(here,

: Non-calibration factor of industrial voltage transformer in zero burden,

: Error in industrial voltage transformer at zero burden

Next, the control means 200 performs a step of calculating the phase correction with the non-correction factor of the industrial voltage transformer 130 in the first burden 151 (S120). At this time, the non-error and phase error of the industrial voltage transformer 130 in the first burden 151 can be obtained by the above-described calculation formula.

However, the non-correction factor of the industrial voltage transformer 130 in the first burden is calculated by the following Equation 3.

:제1부담에서 비보정인자,

:제1부담에서 비오차)
(here,

In the first burden, the non-calibration factor,

: Rainy at first burden)

Finally, the non-calibration factor and phase error of the industrial voltage transformer 130 at the desired second burden 153 based on the calculated zero load and the non-calibration factor and phase error of the first load 151 calculated by the control means 200. It calculates the step (S130).

Hereinafter, a method of calculating the non-correction factor and phase error of the industrial voltage transformer 130 in the second burden 153 by using the equation will be described in detail.

First, in the case where the voltage comparator X terminal 142 of FIG. 3 is opened, the leakage impedance 155 at zero load is a secondary leakage output impedance of the industrial voltage transformer 130 as follows. Is defined as

:영부담에서 누설 임피던스,

:누설 저항,

:누설 리액턴스)(here,

: Leakage impedance at zero load,

A: Leakage resistance,

Leakage reactance)

In addition, the complex ratio of the primary voltage vector Vp to the secondary voltage vector Vs of the industrial voltage transformer 130 at zero load is defined by Equation 5 as follows.

:산업체 전압변성기의 정격변환비,

:영부담에서의 비보정인자,

:영부담에서의 위상오차,

:영부담에서 2차측 전압벡터의 위상,

:영부담에서 1차측 전압벡터의 위상)
(here,

: Rated conversion ratio of industrial voltage transformer,

Non-compensation factor in the

: Phase error in zero burden,

Is the phase of the secondary voltage vector at zero load,

Is the phase of the primary voltage vector at zero load.

Next, as shown in FIG. 5, since the desired second burden 153 is a series connection of a resistor and an inductor, Equation 6 is defined as follows.

:제2부담,

:저항,

:리액턴스)(here,

2nd burden,

:resistance,

Reactance

In addition, the complex ratio of the primary voltage vector Vp to the secondary voltage vector Vs of the industrial voltage transformer 130 in the second burden is defined by Equation 7 below.

:산업체 전압변성기의 정격변환비,

:제2부담에서의 비보정인자,

:제2부담에서의 위상오차,

:제2부담에서 2차측 전압벡터의 위상,

:제2부담에서 1차측 전압벡터의 위상)
(here,

: Rated conversion ratio of industrial voltage transformer,

The non-calibration factor in the second burden,

: Phase error in the second burden,

: Phase of the secondary voltage vector at the second burden,

: Phase of the primary voltage vector at the second burden)

In the case where the voltage comparator X terminal 142 of FIG. 5 is opened, the current flowing through the leakage impedance 155 and the second load 153 is the same, and is defined by Equation 8 as follows.

Equation 8 can be rewritten by Equation 9 as follows.

[Equation 9] can be rewritten as the following [Equation 10] using [Equation 4], [Equation 5], [Equation 6], and [Equation 7].

By solving Equation 10 and arranging the real part, the non-correction factor in the second burden 153 can be obtained by Equation 11 as follows.

here,

:컨덕턴스이고,

Is conductance,

:서셉턴스이다.

: Susceptance.

Solving the imaginary part by solving Equation 10, the phase error in the second burden 153 can be obtained by the following Equation 12.

는 [수학식 9]에서 제2부담(153)인

대신 제1부담(151)인 아래 첨자 t로 대체하면 아래와 같은 [수학식 13]으로 정의된다.Leakage impedance of industrial voltage transformer 130,

Is the second burden (153) in [Equation 9]

Instead, subscript t, which is the first burden 151, is defined as [Equation 13] below.

와

의 크기는 10^-4정도 이므로,

의 급수전개에서 2차항 이상은 무시할 수 있다. 따라서 누설 출력 임피던스

의 저항성분(

)와 리액턴스 성분(

)은 아래와 같은 [수학식 14]에 의해 구할 수 있다.In [Equation 13]

Wow

Size is about 10 ^-4

More than the secondary term can be neglected in Thus leakage output impedance

Resistance component of

) And reactance component (

) Can be obtained by Equation 14 below.

)와 위상오차(

), 제1부담(151) t에서의 비보정인자(

)와 위상오차(

), 그리고

,

를 측정하여 그 값을 얻으면 [수학식 14]에 의하여

및

의 값을 구할 수 있다.In conclusion, the non-calibration factor (

) And phase error (

), The non-calibration factor at the first burden (151) t (

) And phase error (

), And

,

When the value is obtained by the equation [Equation 14]

And

Can be found.

및

로부터 제2부담(153)에서의 비보정인자와 위상오차를 [수학식 11] 및 [수학식 12]를 이용하여 측정에 의하지 않고도 이론적 계산에 의하여 구할 수 있다.
And,

And

The non-calibration factor and phase error in the second burden 153 can be obtained by theoretical calculation without using measurement using Equations 11 and 12.

Finally, the control means 200 performs a step of evaluating the non-correction factor and the phase error calculated using the non-correction factor and the phase error measured in the second burden 153 (S140). At this time, the evaluation will be described in the validation by comparing the theoretical value and the measured value which will be described below.

On the other hand, as shown in Figure 6, after first calculating the non-correction factor and phase error in the first burden 151, and then calculates the non-correction factor and phase error in the zero burden to the target second burden 153 You can also find the non-correction factor and phase error of.

<Validation by comparing theoretical and measured values>

As shown in FIG. 5, the theoretical expense at the second burden 153 is determined by directly connecting the second burden 153 and the calculated value at the zero burden and the first burden 151. The validation of the values of the qualifiers and the phase error will be described.

In order to test the effectiveness of the burden effect, three types of voltage transformers (VT1, VT2, and VT3) with different accuracy are used. Measured. However, at this time, the t-burden is the first burden 151, and the b-burden means the second burden 153 desired. The manufacturers and rating loads of VT1, VT2, and VT3 are shown in Table 1 below.

Kinds Volume Production company accuracy Rated load VT1 3.3kV Zera 0.005% 5VA VT2 3.3kV CT-etech 0.02% 5VA VT3 3.3kV Yokogawa 0.2% 15VA

In addition, the burden value, the power factor, the resistance value, and the reactance value of the t burden and the b burden are shown in [Table 2].

Burden Measurement factor Measures

t burden
Burden 4.87VA Power factor 1.00 R _t 2483Ω x _t 0Ω

b burden
Burden 5.05VA Power factor 0.80 R _b 1917.2Ω x _b 1437.9Ω

Table 3 shows the measurement results of the non-correction factors and phase errors at zero, t, and b for the three types of voltage transformers as described above, and the calculated values at b.

Burden Measurement factor VT1 VT2 VT3 Zero burden
(Measures) RCF ₀ 0.999890 0.999752 0.998114 β ₀ -0.000006 -0.000012 0.000227 t burden
(Measures) RCF _t 1.000007 0.999835 0.998742 β _t -0.000047 -0.000099 0.000020 b burden
(Measures) RCF _b 1.000014 0.999873 0.998762 β _b 0.000032 -0.000032 0.000448 b burden
(Calculated value) RCF _b 1.000012 0.999875 0.998763 β _b 0.000033 -0.000033 0.000446 Difference
ΔRCF _b 0.000002 -0.000002 -0.000001 Δβ _b -0.000001 0.000001 0.000002

의 저항성분(

)과 리액턴스 성분(

)을 구하면 아래 [표 4]와 같다.Leakage output impedance of three types of voltage transformers by substituting the non-compensation factor, phase error, and resistance and reactance values of t-load measured at zero and t-load into [Equation 14]

Resistance component of

) And reactance component (

) Is shown in [Table 4] below.

Kinds Resistance (R ₀ ) Reactance (X ₀ ) VT1 0.29Ω 0.10Ω VT2 0.21Ω 0.22Ω VT3 1.56Ω 0.51 Ω

In the b burden, the non-correction factors and the phase error were calculated using Equations 11 and 12, respectively, and are shown in Table 3. The difference between the measured value and the calculated value in the b burden showed a very good agreement within 2x10 ^-6 for all three voltage transformers. Therefore, the validity of the industrial voltage transformer 130 was verified by comparing the theoretical value and the measured value according to the non-correction factor and the phase error in the second burden 153.

<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. In addition, the computer-readable recording medium may be distributed over network-connected computer systems so that computer readable codes can be stored and executed in a distributed manner. 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. In other words, those skilled in the art can easily understand that many variations are possible without departing from the gist of the present invention.

100: voltage transformer measuring device
110: high voltage source
120: moving voltage transformer
121: primary side
122: secondary side
130: industrial voltage transformer
131: primary side
132: secondary side
140: voltage comparator
141: S terminal
142: X terminal
150: burden
151: First burden
153: Second burden
155: leakage impedance
160: ground
200: control means

Claims (16)

Calculating, by the control means 200, the non-correction factor and the phase error of the industrial voltage transformer 130 at zero burden without external burden (S110);
Calculating, by the control means (200), a non-correction factor and a phase error of the industrial voltage transformer (130) at a first burden (151); And
Calculating, by the control means 200, the non-correction factor and the phase error of the industrial voltage transformer 130 at the second burden 153 based on the non-correction factor and the phase error (S130). Voltage transformer evaluation method using a non-calibration factor and phase error, characterized in that.
The method of claim 1,
The method of evaluating a voltage transformer using a non-correction factor and a phase error, characterized in that the non-correction factor in the zero burden is calculated based on the following Equation.
[Mathematical Expression]

(here,

In non-compensation factor,

: It is rainy at zero burden)
The method of claim 1,
The method of evaluating a voltage transformer using a non-correction factor and phase error, characterized in that the non-correction factor in the first burden 151 is calculated based on the following Equation.
[Mathematical Expression]

(here,

In the first burden, the non-calibration factor,

: Rainy at first burden)
The method of claim 1,
The method of evaluating a voltage transformer using a non-correction factor and phase error, characterized in that the non-correction factor in the second burden (153) is calculated based on the following Equation.
[Mathematical Expression]

(here,

In the second burden, the non-calibration factor,

In non-compensation factor,

In conductance 2,

In the second part, susceptance,

A: Leakage resistance,

Leakage reactance,

: Phase error in zero burden
The method of claim 1,
The phase error of the second burden (153) is calculated based on the following [Equation] voltage transformer using a non-correction factor and the phase error evaluation method.
[Mathematical Expression]

(here,

In phase 2, phase error,

: Phase error in zero burden,

In non-compensation factor,

In conductance 2,

In the second part, susceptance,

A: Leakage resistance,

Leakage reactance,

: Phase error in zero burden
The method of claim 1,
And evaluating, by the control means 200, the non-correction factor and the phase error calculated using the non-correction factor and the phase error measured in the second burden 153 (S140). Voltage transformer evaluation method using qualifier and phase error.
Calculating, by the control means 200, the non-correction factor and the phase error of the industrial voltage transformer 130 at the first burden 151 (S110);
Calculating, by the control means (200), a non-correction factor and a phase error of the industrial voltage transformer (130) at zero burden without external burden (S120); And
Calculating, by the control means 200, the non-correction factor and the phase error of the industrial voltage transformer 130 at the second burden 153 based on the non-correction factor and the phase error (S130). Voltage transformer evaluation method using a non-calibration factor and phase error, characterized in that.
A voltage transformer measuring device 100 for measuring a non-correction factor and a phase error of an industrial voltage transformer 130 used in an industry at an arbitrary burden; And
And a non-correction factor and a phase error control means for calculating a non-correction factor and a phase error of the industrial voltage transformer 130 based on the non-correction factor and the phase error. Voltage transformer measuring system.
The method of claim 8,
The arbitrary burden is
The first burden 151 with zero burden and external burden without external burden, and
The purpose burden mentioned above,
Voltage transformer measuring system for measuring the non-correction factor and the phase error, characterized in that the second burden (153) different from the zero burden and the first burden (151).
The method of claim 9,
The voltage transformer measuring device 100,
A high voltage generator 110 generating a high voltage;
A moving voltage transformer 120 in which the high voltage source 110 and the primary side are connected in parallel;
A voltage comparator 140 connected in series with the secondary side of the movable voltage transformer 120;
The industrial voltage transformer 130 in which the high voltage source 110 and the primary side are connected in parallel, and the voltage comparator 140 and the secondary side are connected in series; And
And a first load (151) connected in parallel with the secondary side of the industrial voltage transformer (130).
delete delete The method of claim 9,
The voltage transformer measuring system for measuring the phase correction and the non-compensation factor, characterized in that the non-compensation factor is calculated based on the following equation.
[Mathematical Expression]

(here,

In non-compensation factor,

: Rain on the burden
The method of claim 9,
The non-correction factor in the first burden (151) is a voltage transformer measuring system for measuring the non-correction factor and phase error, characterized in that calculated based on the following equation.
[Mathematical Expression]

(here,

In the first burden, the non-calibration factor,

: Rainy at first burden)
A computer-readable recording medium having recorded thereon a program for executing a method for evaluating a voltage transformer using a non-correction factor and a phase error according to any one of claims 1 to 6.
A computer-readable recording medium having recorded thereon a program for executing the method of evaluating a voltage transformer using a non-calibration factor and a phase error according to claim 7.

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