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| 摘要: |
| 针对传统水火电系统短期经济调度模型在经济上的保守性,分析了在市场环境下考虑来水量不确定性的必然性和重要性,总结了目前水火电系统短期经济调度的常用方法.并指出这些方法的不足之处.在此基础上,将模糊集理论应用于来水量不确定性分析,提出了一种水火电系统短期经济调度的新方法.该方法考虑了来水量的不确定因素,用隶属度函数将来水量模糊化,以水火电系统中火电燃料费用最小和水电用水量偏差最小作为优化目标,采用模糊优化方法进行平衡,兼顾了火电和水电2个方面,并采用原对偶内点法求解该多目标模糊最优问题,具有较好的收敛性能.与传统方法相比,提出的方法较好地提高了系统的经济性.在一个测试系统的应用效果表明了该方法的有效性. |
| 关键词: 水火电系统 经济调度 模糊集 原对偶内点法 |
| DOI： |
| 分类号:TM734 |
| 基金项目: |
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| Short term economic dispatch of hydro-thermal coordinated system based on fuzzy optimization and interior point method |
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AI Lin HUA Dong
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| Abstract: |
| The uncertainty of water supplement should be considered in the short term economic dispatch model of hydro - thermal coordinated power system in market environment,its necessity and importance are analyzed. The common methods of short term hydro - thermal coordinated economic dispatch are summarized. An improved method is proposed,in which the fuzzy set theory is used to deal with the uncertainty of water supplement. The water supplement is fuzzed up by membership function and both the minimum fuel fee and minimum water consumption restraint are taken as optimization objectives. The fuzzy optimization is used to balance two objectives and the primal - dual interior point method with better convergence performance is used to solve this multi - objective fuzzy optimization problem. Application in a test system illustrates its effectiveness. |
| Key words: hydro-thermal coordinated system,economic dispatch,fuzzy set,primal-dual interior point method |
