考虑级联故障的电力系统脆弱性评估  

Assessment on Power System Vulnerability Considering Cascading Failure

作　　者：周彦衡[1] 吴俊勇[1] 张广韬[1] 苗青[1] 屈博[1] 胡艳梅[1] 

机构地区：[1]北京交通大学电气工程学院,北京市海淀区100044

出　　处：《电网技术》2013年第2期444-449,共6页Power System Technology

摘　　要：电力系统的大停电事故,多由级联故障而并非单一故障引起。为此,基于支路故障组合模型,通过对母线电压和支路功率稳定裕度的计算得出相应指标,对当前系统在N 1和N 2故障下进行风险评估,以为支路故障状态下的电力系统应对策略的制定提供参考。算例结果验证了所提指标的有效性。Power system blackouts are mostly caused by cascading failures but not by single fault.Based on the model of branch fault combination and through the calculation of stability margin of bus voltage and branch power,corresponding indices are obtained.Using obtained indices the risk assessment of IEEE 24-bus RTS under N-1 fault and N-2 faults is performed.The effectiveness of the obtained indices is verified by calculation results.

关 键 词：级联故障 支路故障组合 连续潮流法 概率风险性 脆弱性评估 

分 类 号：TM744[电气工程—电力系统及自动化]