In view of the fact that most of the current research on power system chain failure is based on traditional power system,and the hidden fault,one of the important factors leading to chain failure,is ignored.Based on this,a novel cascading fault model of power system was constructed based on stochastic load flow(SLF)and cellular automata(CA)algorithms for hidden faults.Firstly,SLF was used to introduce wind power and photovoltaic units to construct a new power system,and the active initial power flow of each line in the system was calculated.Then,the CA algorithm was used to simplify the topology of the system,and the cell state was judged by the hidden fault probability model of power flow over limit,and the state of the cell and its neighbor was used for fault transmission to simulate the chain fault.Finally,the improved IEEE39-node system was taken as an example to verify the effectiveness of the model.This model can provide a new reference for the study of new cascading fault model and hidden fault of power system.
关键词
新型电力系统/连锁故障/隐性故障/随机潮流/元胞自动机
Key words
new power system/chain failure/hidden fault/random power flow/cellular automata
维普
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