Modularized UPS system and data transmission method of power equipment

Abstract

The invention discloses a modularized UPS system. The system comprises at least two power equipments, a master control device and a serial bus; each power equipment receives control state information transmitted by the master control device, and when it is determined that a present period is a first preset period, the power equipment transmits a state signal data frame to the serial bus according to the control state information, the state signal data frame comprises an identification domain, the identification domain comprises a state signal data area, and the state signal data area stores data values of state signals; and the serial bus receives the state signal data frames transmitted by the at least two power equipments, and transmits the state signal data frames of the same values in the state signal data area to the master control device in a parallel manner. According to embodiments of the invention, the serial bus in the transmission device is used to transmit the data frames of multiple modules in the parallel manner, the occupation rate of the serial bus is reduced, and the capacity of system modules can be expanded.

Description

technical field [0001] The invention relates to the field of data transmission, in particular to a modularized UPS system and a data transmission method for power equipment. Background technique [0002] At present, the work of modular UPS (Uninterruptible Power Supply, uninterruptible power supply) system requires the transmission of a large amount of real-time data between various power devices through serial buses such as RS485 bus and CAN (Controller Area Network, Controller Area Network) bus. For example, in a modular UPS system, each power device not only needs to transmit its own current data and other control signal data to other modules or main control devices, but also needs to transmit some real-time status signals that can only tolerate a delay of 1ms-2ms at most data. At the same time, after the data of the power equipment in the system increases, the amount of data to be transmitted by the serial bus increases accordingly, resulting in an increase in the occup...

AI Technical Summary

Problems solved by technology

It can solve the problems of high serial bus occupancy caused by a large amount of data transmission, aggravated status signal transmission delay, and unfavorable system module expansion.

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