A wind power generating set energy storage power generation system and its energy scheduling method

Abstract

The invention discloses an energy storage power generation system of a wind power generator set and an energy dispatching method of the energy storage power generation system. The energy storage powergeneration system comprises an energy storage unit, a battery management unit, an energy storage bidirectional converter, a boost transformer and an energy management unit, wherein the energy storageunit is used for storing or releasing electric energy, the battery management unit is used for detecting and protecting a battery module in the energy storage unit, the energy storage bidirectional converter is used for converting an alternating current of a power grid to a direct current so as to charge a battery or converting the direct current discharged from the battery to the alternating current sent back to the power grid, the boost transformer is used for connecting the energy storage bidirectional converter and the power grid and rising an output voltage of the energy storage bidirectional converter to a power grid voltage, and the energy management unit is used for sending a control signal to the energy storage bidirectional converter and a master controller of the wind power generator set to do real-time control according to real-time data of the master controller of the wind power generator set, the energy storage unit, the energy storage bidirectional converter and a powergrid dispatching instruction and wind power forecast information of a power forecast system. By the energy storage power generation system, the optimal charge-discharge rate of the energy storage system can be made, the utilization efficiency of the energy storage system is improved, and moreover, the energy storage system is high in control efficiency and rapid in response speed.

Description

technical field [0001] The invention relates to the technical field of energy storage and power generation of a wind power generating set, in particular to an energy storage and power generation system of a wind power generating set and an energy dispatching method thereof. Background technique [0002] It is well known in the industry that energy shortage is a very important problem in the 21st century, and one of the best ways to solve this problem is new energy such as solar or wind power generation. Due to the characteristics of random fluctuation and uncontrollable output of wind power generation, it brings challenges to the stable operation and control of the power grid, and even leads to the status quo of abandoning wind power and reducing power, which brings serious economic losses to wind farm owners. At present, the common method is to use the energy storage system to store or release electric energy, so as to cooperate with the grid dispatching instructions, impro...

AI Technical Summary

Problems solved by technology

In order to effectively manage and control the wind farm energy storage system, an energy management system is generally set up to schedule and manage the wind storage system, but the current common method is to use the current state of the system to make regular judgments, and does not take into account battery charging and discharging. The relationship between the rate and the storage and release capacity of the battery, using the predicted power-limited time to optimize the energy storage charge and discharge rate, resulting in the battery not being able to fully exert its value within its life cycle, reducing the overall economic benefits of the energy storage system

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