多水库互联电力系统的随机最优化问题

本文提出一种求解多水库群并计及随机径流的互联电力系统长期优化调度的分解一协调新方法。具有m个水库和n个地区电网的联合电力系统被分解为m个水电子问题和N个地区火电子问题。每个水电子问题可采用二维随机动态规划求解。水火之间的协调是通过逐次修正对偶变量以达到电量平衡来解决。针对华中华东9个大型水库的互联电力系统进行了计算机程序设计、调试和计算。计算结果表明,本文提出的新算法是有效的。

STOCHASTIC OPTIMIZATION OF INTERCONNECTED MULTIRESERVOIR POWER SYSTEMS

A New Decomposition-Coordination (DC) methodology for solving the long-term optimal scheduling of interconnected multi-reservoir systems with stochastic river inflows is presented. The problem (with M reservoirs and N regional power systems) is composed of M hydro and N thermal subproblems. The optimization of the hydro individual hydro subprblem can be solved by a 2-state Stochastic Dynamic Programming (SDP) taking into account the stochasticity and time senies correlation of the river inflows. The thermal and hydro coordination is accomplished by successively updating dual variables so that the total average hydro and thermal generations meet the predicted system load demands. A computer program has been developed and tested for the Central China and East China Interconnected Power System with up to reservoirs. Numenical result shows the effectiveness of the proposed method as compared with existing methods.