Flywheel energy storage system, control method and storage medium of flywheel energy storage system

Abstract

The invention discloses a flywheel energy storage system, a control method and a storage medium of the flywheel energy storage system. The flywheel energy storage system used for assisting wind power generator grid inertia adjustment includes: a transformer; the general control equipment includes a general controller and N The master control relay, the first end of each master control relay is connected to the transformer, the master controller is connected to each master control relay; the magnetic levitation flywheel energy storage device includes N magnetic levitation flywheel energy storage supports corresponding to the N master control relays Each maglev flywheel energy storage branch includes a first pre-charging circuit, a first bidirectional converter, a second pre-charging circuit, a second bidirectional converter, a motor, and a flywheel controller. The flywheel energy storage system used to assist wind turbine grid inertia adjustment can realize frequent and deep charging and discharging, reduce the risk of power grid full load protection and meet the economical adjustment method of wind turbine smooth adjustment.

Description

technical field [0001] The present invention relates to the technical field of flywheel energy storage, in particular to a flywheel energy storage system for assisting wind power generator grid inertia adjustment, a control method of the flywheel energy storage system and a computer storage medium. Background technique [0002] With the development of new energy methods and grid-connected technologies, the proportion of new energy in the power grid is getting higher and higher, and there are still a large number of micro-grids combined with regional characteristics. New energy, especially wind power generation, is greatly affected by the natural environment. As the basic equipment for power generation, wind turbines must take on the role of regulating grid stability and continuous power generation at any time. [0003] In related technologies, wind power new energy power plants use electrochemical battery energy storage systems as the main equipment for primary frequency reg...

AI Technical Summary

Problems solved by technology

However, when the inertia of the power grid occurs, the required full-scale operation will greatly impact the life of the electrochemical battery. Therefore, operating in this environment will increase the frequency of battery replacement in new energy power stations and reduce economic efficiency.

Moreover, as the running time increases, it is difficult for the battery to be in a state of 100% effective capacity, and the effective capacity of the battery is one of the conditions that limit the stop of charge and discharge. When the battery voltage drops to a specified threshold, the discharge will stop. Therefore, the electrochemical The battery energy storage system cannot be fully charged

Images