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Electronic transformer calibrator

Electronic transformer calibrator

Type: ZC-104
ZC-104 electronic transformer calibrator is mainly used to calibrate the electronic transformer output in accordance with IEC61850 (- 9-1, - 9-2, - 9-2L). Calibration items include: ratio difference, phase difference, delay, polarity, etc. At the same time, it is equipped with small signal input terminals, which can verify the electronic transformer with small signal output and the parallel unit with small signal input.

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Product Features
1. Verify the electronic transformer that conforms to IEC61850 (- 9-1, - 9-2, - 9-2le), iec60044 standard and small signal (LPCT / Rogowski) output;
2. It can output precise small voltage signal to verify the merging unit of small signal input; it can output digital signal (FT3 format) to verify the merging unit supporting FT3 input;
3. Support synchronous signal output, synchronous signal input, non synchronous delay and other methods to verify the accuracy of electronic transformer; the accuracy verification items include basic wave ratio difference, angle difference, absolute delay, harmonic ratio difference and angle difference, etc;
4. It supports the verification of Mu's frame transmission delay, frame dispersion, frame loss, wrong sequence, time-keeping accuracy, etc.; it supports the verification of transient composite error; it supports the verification of transient ratio difference, angle difference exceeding limit, sampling point mutation, quality displacement recording, etc;
5. Support the harmonic analysis function, be able to carry out 2 ~ 40 times harmonic analysis on standard and tested sampling signals, display histogram and signal distortion rate;
6. Support the automatic parameter detection function, support the analysis of SCD configuration file of the whole station, and complete the parameter setting with - key; analyze the whole protocol of SMV message, analyze its protocol format and configuration of each parameter;
7. The mean value, variation, extreme value and multiple errors of ratio difference and phase difference can be counted, and the stability and linearity of electronic transformer can be verified comprehensively;
8. Support FT3 status word control function; support FT3 exception control (such as frame stop output exception, jump exception, flying point exception, etc.);
9. The protocol consistency analysis function is provided to analyze all data items in the whole frame to determine whether they meet the protocol consistency requirements:
10. The traditional transformer calibration device (BHE type) and Agilent 3458A digital multi-meter are used to realize the value transfer;
11. The built-in GPS or crystal with high stability can be used to output pulse synchronous signal;
12. The protocol package of IEC61850 (- 9-1, - 9-2, - 9-2le) can be parsed in full frame, the number of ASDU and sampling points can be analyzed automatically, and all channel waveforms can be displayed, and all channel data can be visually viewed without packet capturing;
13. It has ST, SC dual fiber Ethernet interface and dual R45 Ethernet interface to improve reliability, and it is convenient to access electronic transformer with different interfaces;
14. The sixth order quasi synchronous algorithm makes the algorithm error of non synchronous sampling approach to zero;
15. Adopt 24bit ad chip and 512 times over sampling technology, greatly expand the bandwidth and improve the accuracy;
16. Adopt multi gear automatic switch and FIR filter to improve dynamic range and reduce signal-to-noise ratio;
17. Real time display of waveform, frequency, amplitude, phase and other data is convenient for comprehensive analysis of transformer performance:
18. With industrial computer, 800x600 touch screen, more convenient to operate;
19. It is equipped with powerful and easy-to-use operation software, which can run in industrial computer or notebook;
20. The mean value, variation, extreme value, multiple errors and other data of ratio difference and phase difference can be counted. It can check the stability and linearity of electronic transformer;
21. It can carry out multiple harmonic analysis and verify the accuracy of each harmonic of electronic transformer:
22. It can record and replay the whole test process:
23. It can carry out frame loss test and count the number of frames lost in real time.
Parameter

Test accuracy

Accuracy level

Grade 0.05 (ratio difference: < 0.05%, angle difference: < 2 ')

Absolute delay

<2μs

Harmonic measurement accuracy

ratio difference: 0.1%Uh or 0.1%Ih

angle difference:10’

Input range

Voltage range

100/√3V and 100V

Current range

1A, 5A

Small signal input range

150Mv, 200Mv, 225mV, 4V, 1.625v, 1V, 2V, 3.25V, 4V, 6.5V

Precise measurement range

Voltage(V)

5%~120%Un(valid value 0.05%RD Un=100/√3V or 100V)

Current(A)

1%~120%(Valid value 0.05% RD In=1A or 5A)

Current gear

50mA, 200mA,1A,5A

Small signal

1%~120%Un (Un=5V)

Amplitude uncertainty

be better than 0.01%

Small signal input

Range above 1V

1%~120% Un Grade 0.05S (For measuring transformer)

Range below 1V

100%~2000% Un Grade0.05% (For testing and protecting transformer)

Small signal output (Optional)

Output Voltage

0~7V

Output harmonic

2~40 times

Output accuracy

0.05~5V (0.05% RD)

Harmonic accuracy

0.01%Uh

Power consumption of input circuit

Voltage

<0.2VA (100V, 100/√3V)

Current

<1VA(5A) or < 0.2VA (1A)

communication protocol

Agreement type

IEC61850 (-9-1,-9-2,-9-2LE), IEC60044 (FT3)

FT3 dosing output

1~200% Un or In (0.05%, 2’)

Ethernet interface

SC optical fiber interface

1 (Multimode fiber wavelength 1310nm)

ST optical fiber interface

1(Multimode fiber wavelength 1310nm)

RJ45 interface

2

synchronization

Optical B code synchronous input

1 (Second pulse and B code configurable)

Optical B code synchronous output

1 (Second pulse and B code configurable)

Electric synchronous input

1

Electric synchronous output

1

Inbound interface

display

TFT LCD resolution 800x600

operation

Touch screen operation, industrial computer has USB interface, can connect USB mouse and keyboard

Power supply

220V ±10%, 50Hz±5Hz

Machine Weight

≤10kg

guide
With the rapid development of smart grid technology, the pilot construction of digital substation has become more and more. Because digital substation uses optical fiber for digital transmission, there is no secondary voltage drop and AD acquisition error of analog energy meter, which greatly reduces the error of transmission statistics: secondary circuit. Digitalization is the direction of power development in the world.
As a bridge from analog world to digital world, electronic transformer plays an important role in digital substation. It can be considered that electronic transformer is the cornerstone of digital substation, and all digital quantities are the source of it. Therefore, the accuracy and performance of electronic transformer are very important. China's measurement Law stipulates that all measuring instruments must be transmitted by measurement, that is, all measuring instruments must be transmitted by measurement.
It must be able to realize the magnitude source. Therefore, it is necessary to measure and transmit the electronic transformer in the practical application, and to verify the accuracy and stability of the measurement, as well as the correctness of IEC61850 protocol support.
Zc-104 electronic transformer calibrator is just to solve the problem of detection and calibration of electronic transformer. It supports iec61850-9-1 and iec61850-9-2. It has the function of verifying angle difference and comparison difference of electronic transformer, and can carry out holographic analysis of communication message. It can carry out various communication fault tests and accuracy verification of digital transformer.
The core of C-104 electronic transformer calibrator adopts dual CPU architecture, which has powerful functions. With 24bit ad chip and 512 times oversampling technology, the bandwidth is greatly expanded and the measurement accuracy is improved. At the same time, multi gear automatic switching and FIR filter are used to improve the dynamic range and SNR. Using Lab view to develop management software, the interface is beautiful and easy to use. A large number of EMC measures have been taken for power supply and sampling input, which can adapt to the complex field test environment. The portable design scheme is adopted to facilitate the laboratory and field test.
Zc-104 electronic transformer calibrator is mainly used to calibrate the electronic transformer output in accordance with IEC61850 (- 9-1, - 9-2, - 9-2LE). Calibration items include: ratio difference, phase difference, delay, polarity, etc. At the same time, it is equipped with small signal input terminal, which can verify the electronic transformer of small signal output and the merging unit of small signal input.
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