Auxiliary primary frequency modulation and optimization control method for battery energy storage systems
A technology for battery energy storage system and optimal control, applied in flexible AC transmission system, AC network load balancing, etc. Considering charging cost and discharging benefit and other issues, to achieve good dynamic response characteristics and economic benefits, which is conducive to faster recovery and increase the effect of reverse discharge benefit
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[0048] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0049] Such as figure 1 As shown, the present invention measures the grid frequency f through the data acquisition module to determine the rate of change of the frequency deviation And the primary frequency regulation power deficit ΔP of the generator set. The absolute value of the rate of change of the frequency deviation The absolute value of the frequency modulation power deviation |ΔP| is used as the input quantity of the fuzzy control for fuzzification, fuzzy reasoning is performed under the fuzzy control rules, and finally the frequency modulation proportional coefficient K of the battery energy storage is output through fuzzy judgment I , to calculate the corresponding battery energy storage output power. If the value is within the rated power range of the battery, then output the power command; if it exceeds the rated power of the battery, the ou...
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