Short-circuit protection analysis method and short-circuit test method for urban rail transit traction system
The invention provides a short-circuit protection analysis method and a short-circuit test method for an urban rail transit traction system. The analysis method comprises the following steps: building an equivalent circuit model in a simulation environment according to a main circuit of a system dur...
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Main Authors | , , , , , , |
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Format | Patent |
Language | Chinese English |
Published |
11.06.2021
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Subjects | |
Online Access | Get full text |
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Summary: | The invention provides a short-circuit protection analysis method and a short-circuit test method for an urban rail transit traction system. The analysis method comprises the following steps: building an equivalent circuit model in a simulation environment according to a main circuit of a system during a short-circuit fault; setting different short-circuit working conditions according to the parameters influencing the short-circuit current during the short-circuit fault; determining the selection of electrical measurement quantity and the position of a measurement point according to the operating characteristics of each level of protection device; after parameters of an equivalent circuit model are set according to the short-circuit working condition, performing simulation through the equivalent circuit model according to the electrical parameters of the traction power supply system and the short-circuit working condition parameters, and obtaining a short-circuit current waveform; and according to the short-c |
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Bibliography: | Application Number: CN202110228553 |