TKRZ-5001 Transformer Winding Deformation Tester Frequency Response Method + Impedance Method

TKRZ-5001 Transformer Winding Deformation Tester, based on the measurement of the characteristic parameters of the transformer's internal windings, adopts the internal fault frequency response analysis that is currently being developed in developed countries in the world.

(FRA) method, can make accurate judgments on the internal fault of the transformer. After the transformer is designed and manufactured, its coil and internal structure are determined, so for a multi-winding transformer coil

If the voltage level is the same and the winding method is the same, the corresponding parameters (Ci, Li) of each coil should be determined. Therefore, the frequency domain characteristic response of each coil is also determined, and the corresponding three-phase line

There is a certain degree of comparability between the frequency maps; the transformer has a short circuit between turns and phases during the test, or a collision occurs during transportation, which causes the relative displacement of the coil, and the relative displacement of the coil during the operation.

Under short-circuit and fault conditions, the deformation of the coil due to electromagnetic tension will change the distribution parameters of the transformer winding. Then affect and change the original frequency domain characteristics of the transformer, that is, the frequency response occurs

Amplitude changes and resonant frequency shifts, etc. The transformer winding tester developed based on the response analysis method is such a novel non-destructive testing equipment for transformer internal faults. It works for

63kV～500kV power transformer internal structure fault detection.

       The transformer winding deformation tester is to quantify the response changes of the internal winding parameters of the transformer in different frequency domains, according to the magnitude of the change, the amplitude, area and frequency of the frequency response change.

To determine the degree of change in the internal windings of the transformer according to the changing trend of the transformer, and then determine whether the transformer has been severely damaged and whether it needs to be overhauled according to the measurement results. For running

Regardless of whether the frequency domain characteristic map is saved in the past, the fault degree can also be judged by comparing the difference of the characteristic map between the faulty transformer coils. Of course, if you save

A set of original winding characteristic diagrams of the transformer can provide a more accurate and powerful basis for the operation status of the transformer, post-accident analysis, maintenance and repair.

    1. The acquisition and control adopts high-speed, highly integrated microprocessor;

       2. USB interface for communication between the laptop and the instrument;

       3. The hardware movement adopts DDS special digital high-speed frequency sweep technology (USA), and the test can accurately diagnose the winding twist, bulge, shift, tilt, short-circuit deformation between turns and phase-to-phase contact.

Faults such as short circuit;

       4. High-speed dual-channel 16-bit A/D sampling (the tap switch is changed in the field test, and the waveform curve has obvious changes);

       5. The signal output amplitude is adjusted by software, the maximum amplitude peak value is ±10V;

       6. The computer will automatically analyze the test results and generate electronic documents (Word);

       7. The instrument has the dual measurement system functions of linear frequency sweep measurement and segmented frequency sweep measurement, compatible with the current measurement modes of two technical schools in China;

       8. The amplitude-frequency characteristics conform to the national technical indicators of the amplitude-frequency characteristics tester. The abscissa (frequency) has two kinds of linear division and logarithmic division, so the printed curve can be a linear division curve

The line can also be a logarithmic graduation curve, the user can choose according to actual needs;

       9. Detection data automatic analysis system

       The analysis result of the comparison of winding similarity between the three phases A, B, and C is as follows:

       ① Very good consistency ② Good consistency ③ Poor consistency ④ Very poor consistency

       Longitudinal comparison A-A, B-B, C-C retrieve the original data and the current data in phase to compare the winding deformation, the analysis results are:

       ①Normal winding ②Slightly deformed ③Moderately deformed ④Seriously deformed

       10. It can automatically generate Word electronic documents for saving and printing;

       11. The instrument fully meets the technical requirements of the electric power standard DL/T911-2004 "Frequency Response Analysis Method of Power Transformer Winding Deformation".