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Causes of magnetic flux produced by the excitation mechanism of power transformers

source:Industry News     Popular:adapter     release time:2021-03-12 17:26:53     Article author:sznbone    

  The transformer manufacturer said that the primary winding of the power transformer is the magnetic flux of the star connection. The original magnetic flux symmetry assumes that the secondary side delta connection closed winding is opened to the open delta connection, then the magnetomotive force is only provided by the primary star winding. . It seems that the solution results of the original text can be copied,

Causes of magnetic flux produced by the excitation mechanism of power transformers(图1)

  But the original text solves the established equations because of the multivariate linear equations with as many as 8 imaginary and real quantities.

  There is no simple connection between each other,

  The relative value of the magnetic resistance of each segment of the magnetic circuit can only be input by means of computer programming

  According to the Gaussian elimination method for power transformers, my country’s electric power industry has developed rapidly over the years,

  The short-circuit capacity of the power system is getting bigger and bigger,

  In order to control the short-circuit current when a short-circuit fault occurs,

  The design requires that the impedance voltage value of the power transformer in the system greatly exceeds the value specified in the national standard,

  Generally, the out-of-range is between 50% and 100%; its impact is the increase in the leakage magnetic field of the transformer, thereby controlling the eddy current loss value of the transformer's internal windings, pull plates, clamps and tank walls, and whether there will be localized Overheating puts forward higher requirements to ensure the safe operation of the transformer.


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