Vulnerability Assessment for Low Voltage Micro-Grid on Running State

摘要

A method used to assess the system vulnerability of micro-grid on running state is proposed to provide technical support for better self-healing in this paper. Both structural characteristic and operation state are taken into consideration. Firstly, the definition of micro-grid vulnerability under the isolated operation state is presented. Then after analyzing the influencing factors, a mathematic assessment model on running state micro-grid is established to picture system vulnerability, and a generic metric function is proposed based on risk theory. At last, a typical CERTS case is used to test and verify the proposed model, and the simulation results show that the weak part in micro-grid can be found accurately.