大型燃气管网快速可靠的暂态仿真与连续Optimization
Fast and Reliable Transient Simulation and Continuous Optimization of Large-Scale Gas Networks
摘要：
我们关注的是在误差控制环境中的大型天然气管道系统的模拟和优化。气体流动动力学局部近似的足够精确的物理模型，从层次结构的复杂性降低，并随时间变化。由多个涡轮压缩机组成的压缩机站的可行工作区域包括聚合特征场的双凸近似。提出了一种先离散后优化的离散伴随方法，并将其应用于有效集策略下的序列二次规划求解由提名验证产生的非线性约束最优化问题。这里提出的方法加速计算的短期预测的突然变化的气体管理，并允许在大型网络的一天内的气体流量计划的经济控制。实际天然气管道系统的案例研究表明，新方法的显着性能。
英文摘要：
We are concerned with the simulation and optimization of large-scale gas pipeline systems in an error-controlled environment. The gas flow dynamics is locally approximated by sufficiently accurate physical models taken from a hierarchy of decreasing complexity and varying over time. Feasible work regions of compressor stations consisting of several turbo compressors are included by semiconvex approximations of aggregated characteristic fields. A discrete adjoint approach within a first-discretize-then-optimize strategy is proposed and a sequential quadratic programming with an active set strategy is applied to solve the nonlinear constrained optimization problems resulting from a validation of nominations. The method proposed here accelerates the computation of near-term forecasts of sudden changes in the gas management and allows for an economic control of intra-day gas flow schedules in large networks. Case studies for real gas pipeline systems show the remarkable performance of the new method.
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