混合电源及功率预测系统在风电并网中的应用

随着风电场装机容量的不断增加,解决大规模风电场并网对电网稳定性的影响问题就显得尤为重要。考虑到风能的特点及我国能源的地理分布情况,首先介绍了风电-火电"打捆运行"为电力系统供电的联合运行方式,通过调节火电厂的输送功率对风电进行调度,以实现电网的稳定及对风能接纳能力的最大化。其次,提出了多尺度选择的风电功率预测及误差校正方法,根据不同尺度的风电功率变化规律,可实现对风机组、电力系统的控制,以便于风电调度。最后,配以合适的储能装置、无功补偿设备可进一步增强电网的稳定性。通过假设的算例进行了验证和分析,具有一定的适应性和实用性。

Applications of the mixing power and power forecasting system in wind power

With the installed capacity of wind farms is increasing, to solve the problem about the stability of the grid is particularly important. Taking into account the characteristics of wind and distribution of energy, firstly, this paper introduces a new way of "bundling operation" to provide electricity to the system. By adjusting the power of the thermal power plants, we can make a schedule of wind power to maximize the acceptance of wind energy. Secondly, a power prediction method and error correction method of multi-scale chosen is put forward. According to the variation of wind power at different scales, we can control the air handling units and the power systems. Lastly, using appropriate energy storage device and reactive power compensation equipment can further enhance the stability of the grid. Data simulation confirms the feasibility of the model.