A flywheel energy storage-based voltage sag compensation method and system

Abstract

The application provides a flywheel energy storage-based voltage sag compensation method and system, and belongs to the field of voltage sag compensation. The method comprises the following steps: collecting sag characteristic parameters to perform sag prediction, obtaining predicted sag parameters and sag prediction errors; obtaining operation characteristic parameters and loss parameters of a plurality of flywheel energy storage units, and performing compensation matching degree analysis; performing flywheel monitoring error classification, and performing error matching degree analysis in combination with the sag prediction errors; performing loss balance degree analysis, and screening optimal flywheel energy storage units for compensation in combination with the compensation matching degree and the error matching degree. The application solves the technical problems of poor compensation effect and uneven use of flywheel energy storage units caused by insufficient selection basis in the prior art, accurately selects flywheel energy storage units by comprehensively considering the compensation matching degree, the error matching degree and the loss balance degree, and achieves the technical effects of improving the voltage sag compensation effect and achieving balanced use of flywheel energy storage units.

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