Optimization of generation shedding allocation for BC grid security enhancement

Generation shedding is one of the most effective and commonly used corrective actions to mitigate insecurity of power systems under large disturbances. This paper presents the implementation of an optimization scheme for generation shedding allocation within an EMS system using integer programming. The approach allows addressing at the same time, various security concerns including thermal limit violation, transient instability, and voltage instability taking into account distribution factors of plants in different locations, which contribute differently to security enhancement. The optimization scheme can receive security enhancement requirements from various sources, such as online DSA (Dynamic Security Assessment), offline planning study and manual input.