摘要
在探讨了Petri网理论和复杂电网连锁故障机理的基础上,提出一种基于广义随机Petri网(Generalized Stochastic Petri Net,GSPN)的电网连锁故障模型。围绕了负荷这一影响连锁故障发生和传播的最重要物理量,结合故障发生的概率,对连锁故障的发生机理和传播过程进行了理论分析和系统建模。该模型很好地模拟了传输线因过负荷发生故障的场景,不但反应各个传输线之间的相互作用,还反应了过负荷情况下负荷的再分配。通过对BPA九节点系统进行建模分析,验证了所提出的GSPN方法的可行性。
On the basis of the Petri net model and the mechanism of cascading failures occurred in complex power grids,the paper proposes a generalized stochastic Petri net （GSPN） model of analyzing cascading failures in power grids.The model firstly focuses on the load which influences the occurrence and spread of cascading failures,and combines the probability of failures,thus the occurrence of cascading events and propagation process are systematically analyzed and modelled.Then,the transmission line failure due to overload is simulated well by the proposed model,not only the interaction between transmission lines is denoted but also the redistribution of load is reflected under the overload situation.Finally,a BPA nine-node system is used to verify the proposed GSPN model,the result shows that the proposed GSPN model is feasible.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2011年第14期113-119,共7页
Power System Protection and Control
关键词
复杂电网
连锁故障
广义随机PETRI网
complex power grid
cascading failure
generalized stochastic petri net（GSPN）
