A control method and system for network-constructed energy storage to resist voltage ride through and network attacks

Abstract

The application relates to a control method and system for resisting voltage ride-through and network attacks of a grid-forming energy storage, comprising the following steps: collecting operation data of a grid-forming energy storage system, identifying voltage ride-through disturbance and network attacks based on the operation data, and generating voltage ride-through disturbance identification and network attack identification; based on the operation data, constructing an unknown input observer group and estimating the operation state of the grid-forming energy storage system to obtain an estimated operation state, and generating a trusted state based on the estimated operation state; based on the trusted state, the voltage ride-through disturbance identification and the network attack identification, adjusting the parameters of the grid-forming energy storage, and constructing an elastic compensation term to stabilize the grid-forming energy storage system; constructing a deep learning model, inputting the trusted state, the voltage ride-through disturbance identification and the network attack identification into the deep learning model, and outputting an original control instruction; the application has the ability to resist high and low voltage ride-through, and also considers network security, thereby significantly improving the safety of the grid-forming energy storage.