Predicting Voltage Instability of Power System via Hybrid System Reachability Analysis
Predicting Voltage Instability of Power System via Hybrid System Reachability Analysis
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DOI：
10.1109/acc.2007.4282216
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发表时间：
2007-07
期刊：
影响因子：
--
通讯作者：
Y. Susuki;T. Hikihara
中科院分区：
文献类型：
--
作者：
Y. Susuki;T. Hikihara
估计电力系统的电压不稳定性对于减少大停电事故具有重要意义。本文提出利用混杂系统的可达性分析预测电力系统的电压失稳。可达性分析是通过计算混合自动机的不安全集的向后可达集来进行的。该自动机表示连续的电压动态和继电器设备的离散操作。混合自动机的不安全集合也是状态空间的子集，其中系统电压显示不可接受的水平，例如低值或高值。与单机负荷总线（SMLB）系统与控制路由切换，我们表明，在SMLB系统的电压不稳定性可以预测使用的可达性分析。所得到的结果意味着，电压失稳导致大停电可能是检测到之前，它发生在电力系统中。
Estimating voltage instability of power systems is important for reduction of large blackouts. This paper proposes to use reachability analysis of hybrid systems for predicting voltage instability of a power system. The reachability analysis is performed by computing backward reachable sets for unsafe sets of hybrid automata. The automata represent continuous voltage dynamics and discrete operations by relay devices. The unsafe sets of hybrid automata are also subsets of state space in which a system voltage shows unacceptable levels such as low or high values. With single machine-load bus (SMLB) system with controlled route switching, we show that voltage instability in the SMLB system can be predicted using the reachability analysis. The obtained result implies that voltage instability leading to large blackouts is possibly detected before its occurrence in power systems.