Battery energy storage system control method for improving wind power controllability
A technology of battery energy storage system and control method, which is applied in the direction of battery circuit devices, current collectors, electric vehicles, etc., and can solve the problems that are not combined with the current situation of wind power forecasting and application requirements of wind power forecasting
Active Publication Date: 2014-03-12
CHINA ELECTRIC POWER RES INST +1
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Problems solved by technology
[0004] In order to overcome the above defects, the present invention provides a battery energy storage system control method for improving the controllability of wind power. The problem of anticipating application requirements
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[0035] Such as Figure 1-3 As shown, a battery energy storage system control method for improving the controllability of wind power, the battery energy storage system control method for improving the controllability of wind power, including: a battery energy storage system and its control system, characterized in that, The method comprises the steps of:
[0036] (1). Under a certain control strategy, estimate the required energy storage capacity;
[0037] (2). Using the estimated energy storage capacity as the initial scale of the battery energy storage system, initialize the parameters of the battery energy storage system;
[0038] (3). Input wind power data;
[0039] (4). Judging whether the working time T of the control system is less than [24-T adj ], if less than, the battery energy storage system is in the working mode at this time, and the predicted deviation ΔP at the current moment is obtained k , contrast deviation ΔP k and allowable error bandwidth α;
[0040]...
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The invention provides a battery energy storage system control method for improving wind power controllability. In the process of controlling a battery energy storage system, the state of charge (SOC) of the battery energy storage system in a later period of each control period is adjusted to an initial state by setting the control period which takes day as time scale, constraint conditions in the application process of the battery energy storage system, such as a control target and an SOC working range of the battery energy storage system, and a factor such as a continuous charge-discharge working condition which possibly appears in the working process of the battery energy storage system are considered in a combined way to estimate the scale demand of the battery energy storage system, and the estimated scale is the initial scale of the battery energy storage system; and the input of the system is controlled to be wind power short-term power prediction data and real-time wind power active power data, predicted deviation is obtained by subtracting the real-time wind power active power data from the wind power short-term power prediction data, and when the deviation exceeds the allowable error bandwidth, the battery energy storage system is controlled to absorb or release partial power to reduce the deviation between the wind power and a target curve and improve the controllability of the wind power.
Description
technical field [0001] The invention belongs to the application field of battery energy storage technology, and in particular relates to a control method of a battery energy storage system for improving the controllability of wind power. Background technique [0002] Natural wind energy resources are inherently random and cannot be predicted accurately. my country's wind power development is dominated by large-scale development, long-distance power transmission, and high-voltage centralized access. As large-scale wind turbines are connected to the grid, wind power fluctuations have a significant impact on the grid, and battery energy storage technology is one of the effective ways to reduce these impacts. [0003] Wind power forecasting is divided into ultra-short-term, short-term, medium-term and long-term forecasting according to the forecasting time. Among them, the purpose of short-term power forecasting is to facilitate the reasonable dispatching of the power grid and ...
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IPC IPC(8): H02J7/00
Inventor 李建林马会萌李蓓惠东
Owner CHINA ELECTRIC POWER RES INST