Security analysis-linear sensitivity analysis method The above-mentioned method is too complex, with too much computation involved Check the outages one-by-one.it is not necessary and not realistic ■ Measures to improve the efficiency of outage analysis Fast algorithm with lower accuracy o事故筛选(Contingency Screening) Fast,parallel computing devices 电力镜广城测量乌控制四川省重点实验蜜 家电网电力系统广域测量与控制四川省重点实验室 Security analysis-linear sensitivity analysis method  The above-mentioned method is too complex, with too much computation involved  Check the outages one-by-one. it is not necessary and not realistic  Measures to improve the efficiency of outage analysis  Fast algorithm with lower accuracy  事故筛选（Contingency Screening）  Fast, parallel computing devices