Power grid dispatching operation domain division considering voltage stability constraints

Abstract The operational instability and scheduling complexity is brought by the high proportion of renewable energy access to the grid. In order to cope with this problem, this paper proposes a method based on the mean voltage stability L-index analysis of stochastic voltage stability and the grid operating domain. This method can quickly find the weakest node in the whole network and help the dispatchers monitor and control the weak nodes. Based on the observation of the voltage stability of the whole network, the grid operation domain division index is proposed, and the grid is divided into different operation domains based on the voltage stability constraint. The validity and correctness of the proposed scheme and indicators are verified by the typical example of IEEE-30 node.