考虑惯性动能的风电场旋转备用容量优化方法

并网风电场主动参与旋转备用控制,已成为调度部门和风电场运营商面临的新挑战。将变速风电机组的转子惯性动能纳入到风电场旋转备用容量范畴,从而最大限度地利用转子惯性动能参与电网频率调节或紧急备用;并根据风电场实际运行场景,提出了备用优化运行模式与调度优化运行模式及其对应的优化模型。实际算例分析表明,相比于传统备用方法,所提出的方法可在备用优化运行模式下使风电场弃风量最小,给风电场商带来较为可观的经济利益;可在调度优化运行模式下向电网提供最大的旋转备用容量,更加有利于电网稳定运行。

Optimization of Wind Farm Spinning Reserve Capacity Considering Rotor Inertia Kinetic Energy

It has become a new challenge for the grid connected wind farm to actively participate in the spinning reserve control to both main system operator and wind farm operator. Taking the rotor inertia kinetic energy of variable speed wind turbines into the wind farm spinning reserve capacity is suggested to make full use of rotor inertia energy to participate in the frequency control or emergence reserve control. Based on the actual operation scenarios of wind farm, this paper proposes optimal reserve mode and optimal scheduling mode, and the associated mathematical optimal model. Case studies demonstrate that the optimal reserve mode can minimize the wind power load shedding with considerable economic benefits. In the meantime, the optimal scheduling mode can maximizing the wind farm spinning reserve capacity, which is very useful for the stability of an electrical power system.This work is supported by National Natural Science Foundation of China (No. 51377047), Fundamental Research Funds for the Central Universities (No. 2013B27614) and Funding of Jiangsu Innovation Program for Graduate Education (No. CXLX13_226).