METHOD OF CONTROLLING CHARGING AND DISCHARGING OF BATTERY ENERGY STORAGE DEVICE AND THE BATTERY ENERGY STORAGE DEVICE FOR THE SAME
First Claim
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1. A method of charging and discharging battery energy storage device, comprising:
- measuring a voltage and a frequency of a grid;
measuring a state of charge (SOC) value of a battery;
calculating an SOC offset value and an SOC feedback gain value from the measured SOC value of the battery; and
performing a voltage droop control based on the voltage of the grid and a frequency droop control on the basis of the frequency of the grid, the SOC offset value and the SOC feedback gain value and controlling charging and discharging of the battery.
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Abstract
A method of charging and discharging battery energy storage device is provided. The method includes measuring a voltage and a frequency of a grid, measuring a state of charge (SOC) value of a battery, calculating an SOC offset value and an SOC feedback gain value from the measured SOC value of the battery, and performing a voltage droop control based on the voltage of the grid and a frequency droop control on the basis of the frequency of the grid, the SOC offset value and the SOC feedback gain value and controlling charging and discharging of the battery.
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Citations
11 Claims
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1. A method of charging and discharging battery energy storage device, comprising:
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measuring a voltage and a frequency of a grid; measuring a state of charge (SOC) value of a battery; calculating an SOC offset value and an SOC feedback gain value from the measured SOC value of the battery; and performing a voltage droop control based on the voltage of the grid and a frequency droop control on the basis of the frequency of the grid, the SOC offset value and the SOC feedback gain value and controlling charging and discharging of the battery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A battery energy storage device comprising:
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a battery; a data storage unit storing data necessary for a voltage droop control and a frequency droop control for the battery; an SOC measuring unit measuring an SOC value of the battery; a grid voltage and frequency measuring unit measuring a voltage and a frequency of the grid; a charging and discharging control unit performing the voltage droop control and frequency droop control corresponding to the voltage and frequency of the grid by using the data stored in the data storage unit, and an SOC offset value and an SOC feedback gain value of the battery, which are calculated on the basis of the SOC value, and outputting a control signal for performing charging and discharging on the battery while preventing overcharging and over-discharging at the time of charging and discharging the battery; and a charging and discharging unit charging or discharging the battery according to the control signal for performing charging and discharging of the charging and discharging control unit. - View Dependent Claims (11)
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Specification