Petrochemical plant power grid stability control system study

This paper is describing a case study on a plant-wide stability control system, which utilizes load shedding for active switching of non-essential load within milliseconds in case of an external grid power failure, in a petrochemical plant in Shanghai, China. Control philosophy and system configuration are introduced in details. Finally system limitations are examined based on actual operation of the system, and then potential improvements in the stability control system by adopting a more advanced power management system are proposed. This paper is one of the first comprehensive studies on stability control systems in industrial complexes in China.