Solving the security constrained unit commitment problem: Three novel approaches

IF 5 2区 工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC
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引用次数: 0

Abstract

This work proposes three novel approaches to speed up the solution of the Security Constrained Unit Commitment problem: an improvement of an active-set iterative approach taken from literature, an approach using solver callback functions for the evaluation of system and security constraints in the branch-and-bound tree, and one based on a shrinking horizon decomposition integrated with the use of callback functions. The three approaches were tested over five different case studies and compared against an approach taken from literature to assess scalability and performance. Results show that the modified iterative approach is always faster than the original one reported in the literature (between −58% and −93% run time), while the callback-based method does not reduce the computational time of large-scale instances. Finally, the shrinking-horizon-based approach was proved to be the fastest (up to −98% less time) despite not guaranteeing optimality (about 1% suboptimal).
解决安全受限的单位承诺问题:三种新方法
本研究提出了三种加速解决安全受限单位承诺问题的新方法:一种是对文献中的主动集迭代方法的改进,一种是使用求解器回调函数来评估分支约束树中的系统和安全约束,还有一种是基于收缩视界分解并结合使用回调函数的方法。这三种方法在五个不同的案例研究中进行了测试,并与文献中的一种方法进行了比较,以评估可扩展性和性能。结果表明,修改后的迭代方法总是比文献中报道的原始方法更快(运行时间在-58%到-93%之间),而基于回调的方法并没有减少大规模实例的计算时间。最后,基于收缩远景的方法被证明是最快的(最多可减少-98%的时间),尽管它不能保证最优性(约1%的次优)。
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来源期刊
International Journal of Electrical Power & Energy Systems
International Journal of Electrical Power & Energy Systems 工程技术-工程:电子与电气
CiteScore
12.10
自引率
17.30%
发文量
1022
审稿时长
51 days
期刊介绍: The journal covers theoretical developments in electrical power and energy systems and their applications. The coverage embraces: generation and network planning; reliability; long and short term operation; expert systems; neural networks; object oriented systems; system control centres; database and information systems; stock and parameter estimation; system security and adequacy; network theory, modelling and computation; small and large system dynamics; dynamic model identification; on-line control including load and switching control; protection; distribution systems; energy economics; impact of non-conventional systems; and man-machine interfaces. As well as original research papers, the journal publishes short contributions, book reviews and conference reports. All papers are peer-reviewed by at least two referees.
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