Control method for battery energy storage system tracking wind-light planned output
A battery energy storage system and planned output technology, applied in flexible AC transmission systems, photovoltaic power generation, wind power generation, etc., can solve the problems of abandoning wind and solar energy, impact, and untrackable power generation of electric fields.
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[0081] 1. Theoretical basis
[0082] The schematic diagram of the predictive control principle is as follows: figure 1 shown.
[0083] Such as figure 1 middle y sp y(t) is the output value of the control object; 0 time represents the current time, and the curves on the left and right sides of 0 time represent the past and future output and control respectively; predictive control The algorithm is to output y according to the prediction p (k) and expected output y r (k) difference e(k), calculate the optimal control quantity u(k) that minimizes e(k) at the current and future L times.
[0084] Predictive control is to determine the future control role by achieving the optimal performance of a certain performance index. Optimal control in the traditional sense generally refers to the global optimum, while optimization in predictive control is a rolling optimization with a limited time period. That is to say, in predictive control, optimization is not performed offline once...
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