Distribution network feeder terminal unit power supply management system and method

Abstract

The invention relates to a distribution network feeder terminal unit power supply management system and method. The system comprises an alternating current power supply module, a main control back-up power supply charging and discharging module, a work communication power supply monitoring control module and a back-up high-voltage operating power supply module. In the distribution network feeder terminal unit power supply management system, the alternating current power supply module is powered by two paths of alternating current mains supply, so that the power supply reliability of the alternating current mains supply is ensued; the main control back-up power supply charging and discharging module can provide backup power when the alternating current mains supply is in outage to ensure the normal operation of the distribution network feeder terminal unit when the alternating current mains supply is in outage; the work communication power supply monitoring control module can well solve the problem of voltage jitter when the main control back-up power supply charging and discharging module is in power supplying; and the back-up high-voltage operating power supply module can well eliminate arc discharge caused by switch equipment actions, so that the power supply safety and the reliability of the high-voltage operating power supply are ensured.

Description

technical field [0001] The invention relates to a distribution network automation feeder terminal, in particular to a distribution network feeder terminal power management system and method. Background technique [0002] In the distribution network automation project, the feeder terminal (FTU) is used for outdoor switch monitoring on the pole. It is an intelligent terminal device installed in the power distribution room and feeder. Load, voltage, power, current position of switch, energy storage completion, etc. are sent to the main station, and can also receive control commands (opening and closing) from the main station to control and adjust the power distribution equipment. When a fault occurs, each FTU records important information before and during the fault, such as the maximum fault current, the load current before the fault, the maximum fault power, etc., and transmits the above information to the DAS control center, which is determined after computer system analysis...

AI Technical Summary

Problems solved by technology

[0003] Based on the above description of the application of the FTU function, in order to ensure that the FTU can normally realize the purpose of monitoring, communication and control of the feeder network, it is necessary for the FTU to provide stable and reliable working power, operating power and communication power, but in the prior art , when the power grid is normal, the 10KV high voltage is directly converted to AC220V through a dedicated power transformer to supply power to the FTU. If the power grid fails, the FTU cannot work, and it cannot be guaranteed that the fault can be uploaded to the master station and perform corresponding control operations. This will lead to the paralysis of the grid

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