Safety and stability control system control strategy for refinery enterprise electrical power system

• Main Authors: CHEN ZHANGSHENG, ZHU LINSONG, TANG CHUNHUA, WU MINQING
• Format: Patent
• Language: Chinese; English
• Published: 15.10.2014
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

A safety and stability control system control strategy for a refinery enterprise electrical power system relates to the stability control strategy for an enterprise power grid. In an refinery enterprise, users and a power plant are laid equal stress on; only heat supply units are provided; installed machine and starting capacity is insufficient; user security protection load is large and is distributed at the power grid ends; load can be wrongly cut due to multistage multiple safety automatic devices, instrument interlock and large-scale synchronous machines and the like; the II and the III type large-disturbance may cause underfrequency, undervoltage, out-of-step oscillation, reverse power, overfrequency and overvoltage; and various changes of the operation modes of the power grid ends and varied load rates enable the actual switchable load of the stability control system is far less than the design value and the like. The technical main points for making the control strategy are that the control types are c