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太原理工大学电气与动力工程学院,山西省太原市 030024
Received:16 October 2021,
Revised:2022-03-22,
Published Online:01 June 2022,
Published:10 November 2022
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高清旭,梁定康,韩肖清等.基于截断系数实现状态合并的直流配电系统可靠性评估[J].电力系统自动化,2022,46(21):71-79.
GAO Qingxu,LIANG Dingkang,HAN Xiaoqing,et al.Reliability Assessment of DC Distribution System with Truncation-coefficient-based State Merging[J].Automation of Electric Power Systems,2022,46(21):71-79.
高清旭,梁定康,韩肖清等.基于截断系数实现状态合并的直流配电系统可靠性评估[J].电力系统自动化,2022,46(21):71-79. DOI: 10.7500/AEPS20211016001.
GAO Qingxu,LIANG Dingkang,HAN Xiaoqing,et al.Reliability Assessment of DC Distribution System with Truncation-coefficient-based State Merging[J].Automation of Electric Power Systems,2022,46(21):71-79. DOI: 10.7500/AEPS20211016001.
直流配电系统的电源拥有多个输出层级,负荷运行方式灵活多变,系统运行状态急剧增加,导致可靠性评估效率降低。文中提出一种基于状态合并的直流配电系统可靠性评估方法。首先,该方法根据直流配电系统源-荷耦合呈现出的多种运行状态,建立系统状态空间模型,根据不同状态之间的内在联系,研究状态合并的条件。然后,将故障树分析法与马尔可夫过程结合,提出基于截断系数的状态合并方法,该方法实现了差异化转移率情况下的状态合并。最后,采用IEEE-RBTS BUS 6直流配电系统作为算例验证了所提方法的有效性。
The power supply of the DC distribution system has multiple output levels. The load operation mode is flexible
and the system operation state increases sharply
which leads to the reduction of reliability assessment efficiency. This paper proposes a reliability assessment method for the DC distribution system based on state merging. First
this method establishes a system state space model based on the multiple operating states of the DC power distribution system with source-load coupling. The conditions of state merging are studied according to the intrinsic connection among different states. Then
the fault tree analysis method is combined with the Markov process to propose the state merging method based on the truncation factor. The method realizes state merging in the case of differential transfer ratios. Finally
the IEEE-RBTS BUS 6 DC distribution system is used as an example to verify the effectiveness of the proposed method.
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