基于改进模型预测控制的微电网能量管理策略

发布时间：2018-05-04 04:38

本文选题：微电网(微网) + 多时间尺度　；参考：《电力系统自动化》2017年22期

【摘要】：微电网中分布式电源出力具有间歇性、波动性等特点,并且负荷形式多样,分布式电源和负荷的不确定性会导致微电网能量优化的不确定性。为了更好地解决上述问题,提出了一种基于改进模型预测控制(MPC)的双层多时间尺度微电网优化策略。传统MPC优化中某些模型参数固定,难以及时处理系统中的突发扰动;并且传统MPC的单个优化周期时长有限,难以处理一些与时间相关或影响优化结果全局性的复杂约束。根据微电网中不确定性因素及复杂约束提出MPC的自适应改进,能更好地适应微电网设备投切灵活、发电功率受外界影响大等特性,更好地保障系统的鲁棒性与优化的精确性。基于日前计划优化出未来的能量分配及负荷调度;在日内基于改进MPC并参考日前优化结果进行实时能量优化,从而使目标更优,提高结果的准确性。最后应用MATLAB进行仿真,证明了所提策略的适用性和准确性。
[Abstract]:Distributed power generation in microgrid has the characteristics of intermittent and fluctuating, and the load forms are varied. The uncertainty of distributed power generation and load will lead to the uncertainty of energy optimization of microgrid. In order to solve the above problems, an improved model predictive control (MPC) based multi-time scale microgrid optimization strategy is proposed. In the traditional MPC optimization, some model parameters are fixed, it is difficult to deal with the burst disturbance in the system in time, and the single optimization period of the traditional MPC is limited, so it is difficult to deal with some complex constraints related to time or affecting the global optimization results. According to the uncertainty factors and complex constraints in microgrid, the adaptive improvement of MPC is proposed, which can better adapt to the characteristics such as flexible switching of micro-grid equipment, large external influence on generating power, and better guarantee the robustness and optimization accuracy of the system. Based on the pre-day plan, the future energy distribution and load scheduling are optimized, and the real-time energy optimization based on the improved MPC and the pre-day optimization results is carried out in order to make the target better and improve the accuracy of the results. Finally, MATLAB simulation is used to verify the applicability and accuracy of the proposed strategy.
【作者单位】：东南大学电气工程学院;国网江苏省电力公司电力科学研究院;南京师范大学电气与自动化工程学院;
【基金】：国家重点研发计划资助项目(2016YFB0900500) 国家自然科学基金资助项目(51777031)~~
【分类号】：TM727

【相似文献】