English Original Reader for Technical Students. Power transformers: short-circuit testing, monitoring systems (Smart Grid). Александр Юрьевич Хренников

electrical network.

      3. Algorithm of the operation of the information-measuring system for continuous monitoring of the state of the windings of power transformers.

      4. Metrological parameters of the device for continuous monitoring of the state of windings of power transformers.

      5. Quick-working protection during the operation of the device for continuous monitoring of the state of the windings of power transformers.

      6. Registration of primary and secondary currents and voltages of a power transformer during operation of the device for continuous monitoring of the state of power transformer windings.

      References

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      Chapter 2. Diagnostics and Transformer Testing Experience by LVI/FRA Methods

      Abstract

      LVI-testing, FRA and short-circuit inductive reactance measurements are sensitive to detecting such typical transformers winding faults as buckling, axial shift and other. It is given an algorithm of the frequency spectral analysis. The examples of diagnostics by LVI-testing, frequency spectral analysis of capacity range from 20 to 400 MVA and voltage range from 35 to 220 kV transformers and autotransformers are showed in service and during short-circuit testing. The studies are carried out for dependency of LVI oscillograms and signal spectra of power transformer winding of one type manufacturing.

      Keywords: Short-circuit, Testing Laboratory, Winding fault, Electrodynamic deformation, Low voltage impulse method

      2.1.