Standby power supply system and method for high mountain communication station

Abstract

The invention relates to a standby power supply system and method for a high mountain communication station. The system comprises a power generation mechanism, an energy storage battery, a power diode, a first DC / DC converter, a second DC / DC converter and a third DC / DC converter. The high-voltage side of each DC / DC converter is connected with the same bus, the low-voltage side of the first DC / DC converter is connected with an original DC power supply network in a relay station, the low-voltage side of the second DC / DC converter is connected with the energy storage battery, and the low-voltage side of the third DC / DC converter is connected with the power generation mechanism. The method comprises the following steps of performing constant low-voltage side voltage control on the first DC / DC converter according to the U1 and the U3, and performing first compound control on the second DC / DC converter, and performing second compound control on the third DC / DC converter. The method has the advantage that the topology of the original system is slightly changed. Graded voltage control is adopted, system overvoltage is avoided, light energy is fully utilized, and electric quantity loss caused by charging of an original system battery is avoided. When the photovoltaic generating capacity is small and the electric quantity of the energy storage battery is insufficient, the DC / DC working efficiency can be fully improved.

Description

technical field [0001] The invention relates to the field of power supply, in particular to a standby power supply system and method for a high mountain communication station. Background technique [0002] The communication DC power supply usually adopts a modular high-frequency switching rectifier. The high-frequency switching rectifier module is generally single-phase 220V or three-phase 380V AC input, and the module capacity is generally 20A / 48V to 50A / 48V per block; the power supply mode of the alpine communication station is AC Single-way power supply and backup battery power supply, and the DC power supply adopts a one-way charging method, which lacks intelligent battery state detection means, and there are safety hazards in manual discharge detection, which cannot be fed back to the grid, which is not conducive to energy saving and emission reduction. When the AC single-channel power supply mode is adopted, when the AC power supply is interrupted and the DC power supp...

AI Technical Summary

Problems solved by technology

[0003] The present invention mainly solves the problem that the existing high-mountain communication station power supply scheme is easy to cause communication link transmission interruption when the AC power supply is interrupted and the DC power supply is unreliable, which is not conducive to the safe operation of the power grid. It provides a direct external connection to the original system. On the other hand, there is less interference to the original system, and the backup power supply system and method of the alpine communication station can improve the reliability of power supply

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