Flywheel energy storage device, generator set combined power supply system and control method

Abstract

The invention relates to the technical field of the combined power supply and particularly relates to a flywheel energy storage device, a generator set combined power supply system and a control method. The system comprises a generator set, a rectifier, an impact load and a flywheel energy storage device. A general controller in the flywheel energy storage device automatically generates a charge and discharge control command according to acquired and processed data information and sends the command to each flywheel controller to control the charge and discharge states of the flywheel energy storage unit to maintain stable operation of the entire system, due to the advantages of fast charging and discharging response speed, long service life and good safety of the flywheel energy storage device, the system and the control method of the invention suppress the fluctuation of the impact load through the flywheel energy storage device, the stability and reliability of the working of the generator set are improved, the service life of the generator set is prolonged, the capacity and energy consumption of the generator set are reduced, and therefore, the cost of the power supply system isreduced.

Description

technical field [0001] The invention relates to the technical field of combined power supply, in particular to a combined power supply system and control method of a flywheel energy storage device and a generator set. Background technique [0002] As a complete set of power generation equipment that can provide stable power supply, the generator set has the characteristics of flexible deployment, convenient transportation, easy operation and maintenance, etc. It has a very wide range of uses, especially for places that are not connected to the grid, or when the grid fails When used as an emergency power supply. Among the electrical loads that need to be powered by generator sets, there is a type of electrical loads that are impact loads, whose power fluctuates in a large and frequent range, and suddenly loads or sheds loads suddenly. The stability has a great impact, which will cause the voltage and frequency of the generating set to fluctuate in a large range, and even cau...

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Problems solved by technology

However, this method also has many disadvantages. First, it increases the investment of the generator set equipment; second, the generator set operates under the condition of lower than the rated load for a long time, resulting in high fuel consumption and poor economy; third, the power of the generator set fluctuates frequently , the shafting torque impact of the unit is severe, which affects the fatigue life of the shafting

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