The object-oriented method and the digital simulation approach were employed based on event scanning, and the simulation platform of elevator group model with multi-level velocity mode was developed in MATLAB, which provided a good general platform for the research and design of elevator group control strategy.

An integrated performance index method of contingency screening in on-line dynamic security assessment

Contingency screening is one of the most important functional modules of online dynamic security assessment, which can greatly reduce the quantity of predefined contingencies to be analyzed.