文档介绍：
Optimal Control of Wind/Storage System Satisfying Ramp
Rate Limit in Grid Codes#
WANG Ying, DAI Xianzhong, ZHANG Kaifeng**
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(School of Automation, Southeast University, Nanjing, 210096)
Abstract: Wind power ramp rate limit in grid codes must be satisfied when smoothing wind power
fluctuations. A methodology is proposed in this paper that can satisfy the ramp rate requirement by
using two means, . energy storage system and wind power curtailment. Based on the ultra-short-term
wind power prediction, a rolling optimization problem is established to maximize the total profit of
wind/storage hybrid system. The proposed method is applied in a case with practical data from an
actual wind/storage demonstration project in China and the results show the effectiveness of the
method.)
Key words: wind power generation, energy storage, power smoothing, ramp rate control
0 Introduction
Wind energy has experienced phenomenal growth in recent years. As the wind power
fluctuates, the integration of wind poses profound challenges to the operation of grid. Specifically,
large changes of wind power within a short period of time are difficult for power system operators
to manage. Studies conducted on the CAISO, PJM and ERCOT have shown that large ramps of
wind power exist in each of these systems and sometimes lead to large wind ramping events [1]-[2