市场环境下基于Benders分解的输电网规划决策

市场条件下,由于不确定因素对市场经济运行的影响,输电网的扩展规划必须考虑发电公司和用户的需求,减缓输电系统阻塞,促进市场的公平竞争。首先以电力联营市场模式为研究背景,针对不确定因素作用下可能的未来场景,基于最优潮流的输电网边际定价模型,提出了以投资成本和运行成本为优化目标的输电网静态规划模型;然后基于奔德斯(B enders)分解算法先求解出各个典型场景下输电网规划优化方案,再根据决策理论中的最小最大悔则进行多场景规划决策;最后在IEEE-24节点系统上进行了仿真计算。与确定性输电网规划方法相比,该模型计及了电网规划与经济运行中不确定因素的影响,从而能更有效地指导市场环境下输电网规划综合决策,提高规划系统经济性能。

Transmission Expansion Planning Decision Based on Benders Decomposition Under Market Environment

In deregulated and competitive power market,it is important to expand or strengthen transmission network for delivering power from generators to loads under uncertainties and providing a fair environment to all market participants.A new comprehensive decision strategy for transmission expansion planning under a competitive pool-mode market environment is therefore presented in this paper.In the proposed optimal strategy,a new transmission planning model is developed with Benders decomposition method considering a variety of market driven future scenarios,while a decision analysis scheme is incorporate to minimize the total planning cost and operating cost of the selected plans.The proposed approach is applied to IEEE 24-bus test system to illustrate that the method is feasible and effective for solving the transmission expansion planning problem under complex competitive electricity market.