Emergency load shedding algorithm for power systems based on successive optimization

作者：Wang Gang; Zhang Xuemin; Mei Shengwei^*; Tan Wei

来源：Journal of Tsinghua University(Science and Technology), 2009, 49(7): 943-947.

• Correction control
• Economic operations
• Emergency load shedding
• Load margin
• Load-shedding
• Optimization algorithms
• Optimization variables
• Power flow equations
• Power system
• Power systems
• Safe control
• Shanghai power grid
• Transient stability
• Two stage
• Voltage stability
• Voltage stability region

A two stage emergency load shedding algorithm was developed to ensure safe control along with economic operation. The first stage improves the solvability of the power flow equation while the second stage achieves the requested load margin for voltage stability. The voltage weak node set is identified using the tangential plane of the voltage stability boundary. A successive optimization algorithm improves solvability of the power flow equation, whose objective is to minimize the load shedding and improve transient stability with fast calculational speed using the load of the voltage weak node set as the optimization variables. The algorithm is validated by simulations of the IEEE-39 system and the Shanghai power grid.

• 出版日期2009
• 单位清华大学