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。
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.
出处
《电力自动化设备》
EI
CSCD
北大核心
2014年第7期150-156,共7页
Electric Power Automation Equipment
基金
南方电网公司2011年重点科技项目(K-ZB2011-012)~~
关键词
电力系统
输电
模型
随机潮流
实时故障筛选与排序
静态安全
风险评估
electric power systems
power transmission
models
probabilistic power flow
real-time fault screening and ranking
static security
risk assessment
