Distributed Multiple Line-Outages Detection in Power Grid With Finite Time Observer

Multiple line-outages detection is an important and meaningful research task for power grid security. In this paper, we model the power grid as a distributed complex network and obtain real time power data from phase measurenment units (PMUs). A novel distributed multiple line-outages detection algorithm is proposed, in which each bus sensor receives data from its neighbor buses. By constructing a virtual finite time observer network, the topology variation of power grid can be detected in finite time. Finally, simulation results based on IEEE9 bus system show that the proposed algorithm is effective to detect line-outages in real time.