Power supply cable type selecting method for urban track traffic traction power supply and distribution system
A technology for urban rail transit, power supply and distribution systems, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of design and research, and fully consider the series-parallel resonance of the system.
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[0063] The present invention will be further described below in conjunction with accompanying drawing.
[0064] According to the current domestic mainstream power system design, namely 110kV main substation, 35kV traction substation, 24-pulse traction rectifier unit, 0.38kV step-down substation and following substation, 35kV traction power supply and distribution for urban rail transit The length of the power supply cable in the system and the selection of the charging capacitor per unit length, the specific steps are as follows:
[0065] 1. Design the incoming power supply parameters and main substation parameters of urban rail transit users, including the connection mode between urban rail transit users and the public power grid, PCC points and their maximum and minimum short-circuit capacity. The public power grid may The existing background harmonic frequency distribution, 110kV / 35kV main transformer parameters in 110kV main substation, such as rated capacity, impedance vo...
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