Networked microgrid stability through distributed formal analysis
Networked microgrid stability through distributed formal analysis
复制标题
DOI：
10.1016/j.apenergy.2018.06.038
复制
发表时间：
2018-10
期刊：
影响因子：
11.2
通讯作者：
Yan Li;Peng Zhang;M. Yue
中科院分区：
文献类型：
--
作者：
Yan Li;Peng Zhang;M. Yue
提出了一种基于可达集计算的可扩展分布式形式化分析方法（DFA），用于评估分布式能源扰动下网络化微电网的稳定性。由于数学上的严格性，DFA可以以分布式的方式有效地计算所有可能的动态边界，这是通过传统的时域模拟或直接方法无法实现的。然后将分布式拟对角化Geršgorin（DQG）理论与DFA相结合，以确定系统的稳定裕度。建立了一种面向微电网的分解方法，以解耦网络化微电网系统，并实现DFA和DQG的计算，同时还保护每个子系统的隐私。通过对网络化微电网系统的数值计算，验证了DFA和DQG算法的有效性。
A scalable distributed formal analysis (DFA) via reachable set computation is presented to efficiently evaluate the stability of networked microgrids under disturbances induced by distributed energy resources (DERs). With mathematical rigor, DFA can efficiently compute the boundaries of all possible dynamics in a distributed way, which are unattainable via traditional time-domain simulations or direct methods. A distributed quasi-diagonalized Geršgorin (DQG) theory is then combined with DFA to identify systems’ stability margins. A microgrid-oriented decomposition approach is established to decouple a networked microgrid system and enable calculations of DFA and DQG while also preserving the privacy of each subsystem. Numerical tests on a networked microgrid system validate that DFA and DQG facilitate the efficient calculation and analysis of networked microgrids’ stability.