电力系统暂态稳定紧急控制并行序贯优化算法

Parallel sequential optimization algorithm for transient stability emergency control of power system

电力系统暂态稳定紧急控制可建模成一个大规模的动态优化问题,为此,提出一种基于并行灵敏度分析的双层优化算法。在仿真层,采用有限元正交配置离散微分代数方程,并结合并行计算技术求解状态量及灵敏度;在优化层,采用预测校正内点法求解较小规模的非线性规划问题。算例结果表明,所提方法具有较高的计算效率。

The transient stability emergency control of power system can be modeled as a large scale dynamic opumization problem, for which a two-layer optimization algorithm based on the parallel sensitivity analysis is proposed. In the simulation layer, the differential algebraic equations are discretized by the orthogonal collocation on finite elements, and the parallel computation technology is used to solve the state variables and sensitivities. In the optimization layer, the predictor-corrector interior point method is adopted to solve the nonlinear programming problem. Case study results show that the proposed method has high computational efficiency.