A superscalar decision support method of short-circuit current node based on the sensitivity of the impedance

The present invention provides a node based on the sensitivity of the impedance of the short circuit current exceeding decision support method, comprising the steps of: acquiring data online or offline data, and acquires the physical bus connection relationship set power range, and reducing the short-circuit current interrupting current priority measures level; fault point is calculated open circuit voltage and short circuit current, a short-circuit current exceeding the grid points within the range, and subjected to an alarm; reduction measures against excessive short-circuit current bus, the search; calculated for each node impedance to reduce the sensitivity of the short-circuit current measures, and measures to reduce short-circuit current sorting; generate excessive short-circuit current decision support, and excessive short-circuit current decision support for verification. The present invention is based on limiting measures to change the structure of the network to achieve, if excessive short-circuit current problems under the current operation mode, the automatic analysis of plant station wiring, running state line and crew, giving decision support recommendations.