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中文摘要：
电力市场环境下，各省级电力公司的购电计划中除了一定的固定购电合约以外，在一定的条件下还还存在着自由购电空间。对如何确定省级电网企业的自由购电空间的问题进行研究，提出一套较为完整的判别体系流程，对不同购电情况下的购电量以及购电费用建模分析，并在存在购电优化空间的条件下构建了购电优化模型。通过南方某省电网企业2006年的购电实际数据进行验证分析，结果表明，该购电优化空间判别方法和购电优化模型能够为省级电网企业的购电策略提供可靠合理的辅助决策分析。
英文摘要：
In the electricity market, there is some free space under certain conditions in electricity purchasing by provincial grid companies besides most fixed purchasing contracts. The problem of how to identify the free purchasing space for these companies was studied. A system of discriminating process was proposed, models of purchasing quantity and cost under different conditions were established, and an optimal purchasing model suitable for free purchasing space existence was built. The electricity purchasing data of a province in 2006 were used to carry out empirical study of the mode, and the results showed that the method can provide reliable and reasonable decision-making assistant for provincial grid companies in power purchasing.
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Research on parameter design of competitive generation markets based on dynamic simulation and cloud
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