A Fast Security Region Construction and Scheduling Optimization Method for Byproduct Gas System in Steel Industry

Scheduling optimization plays a pivotal role for byproduct gas system in steel industry, for which is directly related to the smooth production and economic interest raising for the enterprise. While owing to the dynamic characteristics of the related equipment as well as the complexity of the network, the adjustable amount considering operational security of the byproduct system may commonly change during daily production. In order to solve this problem, a fast security region assessment and scheduling optimization method is proposed in this study. It starts with a modeling process for the byproduct gas network based on linear difference equation. Then a security region construction method combining hyperplane moving technique and Quickhull algorithm is designed to timely acquire the dynamic adjustable margin for the scheduling units. Finally, a scheduling architecture involving both the computed security region and some other real-world essential constraints is established. The following experiments are conducted in two aspects, i.e., comparing with other security region assessment method and commonly deployed scheduling optimization, where the scheduling scheme obtained by the proposed method exhibits not only operationally optimal but also practically secured. Furthermore, an application software is also developed and given as a proof for the real-world application of this study.