Power storage and discharge device and control method thereof

Abstract

The invention provides a power storage and discharge device and a control method thereof. The power storage and discharge device comprises a guide rail and a mobile energy storage assembly placed on the guide rail. The mobile energy storage assembly is used for being in communication connection with a peripheral control terminal, and performing upward movement or downward movement on the guide rail based on a movement control instruction when receiving the movement control instruction sent by the peripheral control terminal; an energy storage flywheel is arranged in the mobile energy storage assembly, and the energy storage flywheel is used for entering a discharging state when the mobile energy storage assembly moves upwards and entering an energy storage state when the mobile energy storage assembly moves downwards. Mechanical energy storage can be used for providing a wider power adjusting range, and meanwhile the beneficial effects of being low in cost and high in reliability are achieved.

Description

technical field [0001] The invention relates to the technical field of energy storage, in particular to a storage and discharge device and a control method thereof. Background technique [0002] In the power system, the unit module flywheel is usually used to realize energy storage and discharge. The unit module flywheel can only adjust the output power within a certain power range. For example, the power range is 250KW-5MW. If a larger output power is required, the Connect multiple unit modular flywheels in parallel to achieve power expansion. However, this power expansion method will not be able to meet the demand for higher output power due to the cost and complexity of the system structure. Moreover, due to the limitation of the power range of the unit module flywheel, the power adjustment at low frequency and deep for a long time needs to be realized with other forms of solutions, which further increases the system cost and the complexity of the system structure. To su...

AI Technical Summary

Problems solved by technology

[0002] In the power system, the unit module flywheel is usually used to realize energy storage and discharge. The unit module flywheel can only adjust the output power within a certain power range. For example, the power range is 250KW-5MW. If a larger output power is required, the Connect multiple unit modular flywheels in parallel to achieve power expansion. However, this power expansion method will not be able to meet the demand for higher output power due to the impact of cost and system structure complexity.

Moreover, due to the limitation of the power range of the unit module flywheel, the power regulation at low frequency and deep for a long time needs to be realized with other forms of solutions, which further increases the system cost and the complexity of the system structure

In summary, the existing energy storage and discharge systems still have room for development

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