适应大规模风电并网的超短期调度策略研究

Study on Ultra-short Term Dispatching Strategies for Large-scale Wind Power Integration

为应对由风电不确定性引起机组调节响应不及时、计划跟踪误差较大等问题,本文提出了一种引入MPC思想的超短期调度方法。为了最大限度接纳风电,基于MPC基本原理以机组实时输出和超短期预测数据作为反馈信息,建立完全接纳风电和弃风最小两种滚动优化模型,并针对不同的情况结合判据选择合适的模型进行优化,实现了跟踪理想调度方案过程中更大限度地接纳风电和削弱不确定因素对系统的影响。并以吉林省某电网为例,进行算例分析验证了所提模型及算法的有效性。

For dealing with such issues as slow response of unit adjustment and big planning and tracking error due to uncertainty of wind power,in this paper,an ultra-short term dispatching method with MPC idea is introduced.For accepting the wind power as much as possible,such two kinds of rolling optimiza-tion models as complete acceptance of wind power and minimum wind power curtailment is set up based on MPC basic principle and with real time output of the unit as ultra-short term prediction data as feedback in-formation,the appropriate model is selected and optimized as per the different situations together with crite-ria so to achieve maximum acceptance of wind power and weaken the influence of uncertainty factor to the system during the tracking optimal dispatching proposal.The certain grid in Jilin is taken as an example and effectiveness of the proposed model and algorithm is verified by the calculation analysis.