学术论文

      微电网分级优化故障重构

      Micro-grid Hierarchical Optimization Fault Reconstruction

      摘要:
      结合微电网重构时须遵循的组网规则,综合考虑重构后微网的微源配置、敏感性负荷支撑、电压及频率支撑等关键性能要满足微电网孤网运行的要求,提出将组网规则以组网约束的形式引入到微网重构优化问题之中;针对微网采用传统构造适应度函数优化方法时需要进行大量潮流计算,提出一种分级优化思想,将不涉及潮流计算的寻优过程作为第一级先行处理,将涉及潮流计算的寻优过程作为第二级优化处理,使得只有满足第一级优化指标的方案进入第二级优化,可以大大减少计算量,并且可以达到确切最优解.算例结果验证了模型及方法的有效性.
      Abstract:
      Combining micro-grid construction rules and considering the operation requirements of isolated micro-grids, such as micro-source configuration, sensitive load support, voltage, frequency support, and furthermore, these rules were introduced in the form of grid-construction constraints into the optimization model. For the mass power flow calculation in the process of constructing fitness function of the micro-grids optimization, a hierarchical optimization thought was proposed, which treated the processes that not involved power flow calculation as the first stage, and those involved as the second stage. Only the results that meeting the optimal solution of first stage can continue the second stage, which can reduce the calculation greatly, and obtain accurate optimal solution. The simulation results verify the effectiveness of the model and methods.
      Author: LI Xianshan XU Hao ZOU Fang BI Hongxu
      作者单位: 三峡大学电气与新能源学院,湖北省宜昌市,443002
      刊 名: 中国电机工程学报 ISTICEIPKU
      年,卷(期): 2015, 35(24)
      分类号: TM721
      在线出版日期: 2016年2月25日
      基金项目: 国家自然科学基金项目(51277110). Project Supported by National Natural Science Foundation of China