Line fault region identification method
A line fault and area identification technology, applied in the electrical field, can solve the problems of long delay, no current limiting reactor boundary, weakened DC line fault characteristics, etc., and achieves strong resistance to transition resistance, low communication requirements, and fast action speed. Effect
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[0052] Such as Figure 1-10 As shown, since the transfer function of the T zone is affected by many parameters, including the equivalent resistance R of the converter eq , equivalent inductance L eq , Equivalent capacitance C eq Peace wave reactor L d . The following will analyze each influencing factor one by one.
[0053] Converter equivalent inductance L eq = 2L 0 / 3 depends on the inductance L of the bridge arm of the converter 0 , so the equivalent inductance of the T area is determined by the smoothing reactor L d It is determined together with the inductance of the bridge arm; the equivalent capacitance C in the T area eq =6C 0 / N is determined by the submodule capacitance C 0 It is determined together with the number of sub-modules N; the equivalent resistance R in the T area eq = 2R arm / 3 is determined by the equivalent resistance of the bridge arm. However, the parameters corresponding to different projects are different, but the parameters are all with...
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