Formulation method of energy storage equipment control strategy for wind electricity planning power tracking
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A technology of energy storage equipment and control strategies, applied in wind power generation, energy storage, reducing/preventing power oscillation, etc.
Inactive Publication Date: 2017-08-08
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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[0002] Wind power has the characteristics of mature technology, low cost, and environmental friendliness, but its intermittent and fluctuating nature bring challenges to the operation and dispatch of the power grid and become an important factor restricting the development of wind power
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[0062] The present invention will be further described below in conjunction with accompanying drawing.
[0063] The invention provides a method for formulating a control strategy of an energy storage device for wind power planning power tracking, which is used to solve the problem of controlling the output power of the energy storage device in a wind-storage hybrid system.
[0064] 1. Cooperation mechanism of wind-storage hybrid system in the market environment
[0065] Wind power and energy storage constitute a wind-storage hybrid system, in which wind power is the energy source of the hybrid system, and energy storage provides the possibility of power regulation and control for the hybrid system. In the electricity market environment, the hybrid system declares the power generation plan and reserve capacity of each period to the grid in advance. During operation, the hybrid system adjusts the output power of the energy storage device in real time, so that the total output po...
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Abstract
The invention discloses a formulation method of an energy storage equipment control strategy for wind electricity planning power tracking. The method comprises the following steps: a, inputting basic data, b, initializing a Q value function, c, setting a time period t which is equal to 1 and an implemented action selection time number Nn which is equal to 0, d, determining a state of a hybrid system, e, selecting control action, f, obtaining an output power deviation control target value of the hybrid system, g, calculating an output power demand value of energy storage equipment at the t time period, h, calculating actual output power of the energy storage equipment at the t time period, i, calculating an actual output power deviation of the hybrid system at the t time period, j, calculating an immediate return value, k, determining charging and discharging states of the energy storage equipment at the t+1 time period, l, determining control action of the hybrid system at the t+1 time period, m, correcting the Q value function, and n, finishing training if a specified learning step number is reached, or else, allowing t to be equal to t+1 and Nn to be equal to Nn+1 and transferring to Step d. The method can realize reasonable control of the energy storage equipment, can lower wind storage expenses, and can reduce an influence of wind electricity output power fluctuation on operation of a power grid.
Description
technical field [0001] The invention relates to a method for formulating control strategies for energy storage equipment in a wind-storage hybrid system, which can improve the reliability, self-discipline and planning of the wind-storage hybrid system, and belongs to the technical field of power generation. Background technique [0002] Wind power generation has the characteristics of mature technology, low cost, and environmental friendliness, but its intermittency and volatility bring challenges to power grid operation and dispatch, and become an important factor restricting the development of wind power. With the increasing proportion of wind power connected to the grid, it will be difficult to achieve a reasonable consumption of wind power only by grid-side regulation. In recent years, from the perspective of improving the self-discipline of wind power, slowing down the impact of wind power on the operation of the grid has gradually become a new development direction. . ...
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