Alternating current side anti-countercurrent control method and terminal

Abstract

The invention discloses an AC side anti-countercurrent control method and a terminal. The method comprises the following steps: S1, acquiring electrical parameters of an intelligent micro-grid; and S2, calculating a correction coefficient according to the electrical parameters, and performing correction control on the power of the battery system side of the intelligent microgrid according to the correction coefficient. A correction coefficient mode is used, it is guaranteed that execution is carried out on the basis of the original set power on the battery system side, and it is also guaranteed that when the power change of the battery system side is set in a time-phased mode, the adjustment power fed back by real-time collection power changes along with the power set on the battery system side in the time-phased mode; the strategy ensures that the issued power and the power which is acquired in real time and needs to be adjusted do not conflict, and a battery system side performs execution according to the originally set power and only performs correction by multiplying the power by a coefficient.

Description

technical field [0001] The invention relates to the technical field of energy storage systems, in particular to an AC side anti-backflow control method and a terminal. Background technique [0002] As various new power devices such as intelligent floor heating and intelligent projection become more and more popular in residents' homes, the daily electricity consumption and peak power of each household are increasing; The equipment in the factory is also gradually entering the pace of upgrading, replacing old equipment with smarter and more powerful equipment, and the daily electricity consumption and peak power of commercial electricity are also increasing day by day. [0003] The pressure on the grid load has increased sharply, and in the context of the country's 2030 carbon peak, thermal power plants are gradually shutting down, and power supply is tight, resulting in power rationing for commercial power. For this reason, the existing technology uses energy storage. The s...

AI Technical Summary

Problems solved by technology

[0006] First, if there is a second power generation system in the microgrid, because there is a second power generation system in the microgrid, even if the discharge power of the energy storage system drops to 0 and the AC contactor 2 on the battery system side is cut off, the power generation system cannot be stopped. Energy reverse flow, when the power generation system reverses to the grid, it will cause fluctuations in the grid, which will have a great impact on the stability of the grid

[0007] Second, when the power grid scheduling command is given to the EMS, the real-time sampling results may also be sent to the EMS at the same time, resulting in a conflict between the two commands. The EMS does not know whether it should respond to the scheduling command or the result of real-time feedback, causing system errors and cannot be realized. Scheduling management

[0008] Due to the above two problems, the current of the smart microgrid is reversed to the power grid

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