智能电网调度控制系统新型应用架构设计

提出了基于分解协调和多目标趋优控制的智能电网调度控制系统应用新架构。利用分解协调策略,在各级电网实时数据和模型数据不逐级集中的条件下实现系统级分析计算(包括短路电流、潮流、小干扰、机电暂态、机电—电磁暂态混合仿真等),实现各类应用的完全分布化,降低对分析计算程序和硬件的要求,同时提升各类分析计算收敛性和建模精细度。利用多目标趋优技术,实现大电网安全、经济、环保多目标自动趋优运行,提升电网调度控制系统的智能性。同时,提出了带潮流方程的状态估计方法,为各类在线应用提供在线电网模型;提出了具有最小/最大稳定裕度计算功能的在线安全分析方法,为多目标优化提供稳定裕度指标。

A Novel Application Architecture Design for Smart Grid Dispatching and Control Systems

A novel application architecture of smart gird dispatching and control systems is proposed based on decompose-coordinate strategy and multi-index optimization approaching control. By decompose-coordinate strategy, the higher level control center can carry out system level calculation such as load flow, short circuit current analysis, small-signal disturbance analysis, electromechanical transient simulation, electromechanical and electromagnetic hybrid simulation etc, even if the higher level control center does not collect real-time data and model data of lower level control centers. Therefore, decompose-coordinate strategy can reduce performance requirements for hardware and calculation software, and improve the convergence of system level calculation and fineness of power system models. By multi-objective optimization, smart grid dispatching and control systems can be more intelligent and have better balanced security, efficiency and environment protection. Also, in order to provide on-line power systems model for on-line applications, a state estimating method with load flow equation constraints is proposed. To provide stability margin index for on-line applications, a dynamic security analyzing method capable of giving minimal/maximal stability margins is proposed.