【摘要】 提出了一种电力系统静态安全在线风险评估方法。该方法建立了计及气象因素的输电线路实时评估模型,并利用该模型求解输电线路的实时故障概率,在此基础上利用随机潮流计算所建立的风险指标。为了减小求解规模,提出了一种实时故障筛选与排序方法。按照是否考虑输电线路随机故障分为2种情况进行对比分析,New England 10机39节点系统的计算表明,所提方法能够真实评估系统当前所处的风险水平。更多还原

【Abstract】 A method of online risk assessment for the static security of power system is proposed,which establishes a real-time assessment model of transmission line with the consideration of meteorological factors,calculates the real-time fault probability of transmission line according to the established model and applies the probabilistic power flow to obtain the established risk indexes. A method of real-time fault screening and ranking is proposed to reduce the scale of computation. Comparative analysis is carried out between New England 10-generator 39-bus system with and without random transmission line faults,which shows that the proposed method assesses the risk level of power system truly in real time.更多还原