基于生产可能性边界的含规模风电电力系统网架重构策略

Production-possibility Frontier-based Network Reconfiguration Strategy for Power System Integrated With Scaled Wind Farm

研究高比例新能源接入场景下的网架重构策略,对于构建与新型电力系统的电源结构相适应的停电防御体系具有重要意义。引入生产可能性边界方法,将计及规模风电出力后重构方案的优化转化为启动功率这一稀缺性资源的优化配置问题。在对重构阶段的生产资源、技术条件和电源出力进行数学描述的基础上,采用规格化法平面约束法将重构方案优化建模为混合整数线性规划问题。在求解获得由多个最优重构方案组成的时步网架重构生产可能性边界曲线后,采用变异系数法筛选出最优的时步重构方案。最后,以接入规模风电的IEEE39节点系统为例仿真验证了所提方法的有效性。

The research on the grid reconfiguration strategy under the scenario of high proportion of new energy integration is of great significance to build a blackout defense system suitable for the power structure of the new power system. The method of production-possibility frontier is employed in transforming optimization of the reconfiguration scheme considering the scaled wind power into the optimal dispatching of the scarce starting power. Based on the mathematical description of the production resources, the technical conditions and the power sources output, the optimization of reconfiguration scheme is modeled into an MILP problem by means of the normalized normal constraint method. After the production-possibility frontier curve comprised of multiple reconfiguration schemes is achieved, the optimal scheme is identified with the coefficient of variation method. The validity of the proposed strategy is verified in an IEEE 39-bus system with the scaled wind power integrated.