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期刊号: CN32-1800/TM| ISSN1007-3175

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基于改进近似动态规划的安全约束机组组合算法

来源:电工电气发布时间:2024-03-11 10:11 浏览次数:63

基于改进近似动态规划的安全约束机组组合算法

曾恺, 朱建全
(华南理工大学 电力学院,广东 广州 510640)
 
    摘 要:针对电力系统的安全约束机组组合问题,提出了一种基于改进近似动态规划的求解算法。考虑到安全约束机组组合是一个多时段混合整数非线性规划问题,难以直接求解,所提算法将其建模成马尔可夫决策过程,并利用近似动态规划实现解耦求解。为了处理近似动态规划决策空间过大的问题,所提算法通过决策空间缩减技术提前获得大部分机组的开停机状态,有效提高求解效率。在 IEEE 39 节点系统和一个实际系统上进行了算例分析,验证了所提算法的有效性。
    关键词: 安全约束机组组合;混合整数非线性规划;近似动态规划;决策空间缩减技术
    中图分类号:TM715 ;TM76     文献标识码:A     文章编号:1007-3175(2024)02-0001-07
 
A Security-Constrained Unit Commitment Algorithm Based on
Improved Approximate Dynamic Programming
 
ZENG Kai, ZHU Jian-quan
(School of Electric Power Engireering, South China University of Technology, Guangzhou 510640, China)
 
    Abstract: In this paper, an improved approximate dynamic programming algorithm is proposed for the security-constrained unit commitment in power systems. First, considering security-constrained unit commitment is a multi-period mixed integer non-linear programming problem, which is difficult to solve directly, the proposed algorithm models it into a Markov decision process, and uses approximate dynamic programming to achieve decoupling. Then, in order to deal with the problem of excessive decision-making space for approximate dynamic programming, the proposed algorithm obtains the start-up and shut-down states of most units in advance through the decision space reduction technique, which effectively improves the solution efficiency. Finally, case studies are conducted on the IEEE 39-bus system and a practical system to validate the effectiveness of the proposed algorithm.
    Key words: security-constrained unit commitment; mixed integer non-linear programming; approximate dynamic programming; decision space reduction technique
 
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