摘要
Abstract
In view of the defects of deterministic flow calculation method does not accurately describe the nature of transmission network random , this paper researched of the multiple random failures on the influence of voltage and load flow distribution in transmission network .First of all , the method of combinatorial analysis is used to prove sever-al properties of the units of generator failure , load fluctuations and disconnection fault .Secondly , of the semi-invariant and Gram-Charlier series are applied to expand the stochastic load flow analysis method , each node voltages and the trend of the probability distribution of each branch are obtained under the influence of multiple uncertainties .Finally , it was obtained that under different conditions , the more limited probability of node voltages and the overload probabil-ity of branch flows , and made evaluation of the influence degree that the multiple uncertainties on the transmission network voltage and branch power .The research results provided an important valuable reference for the planning and operation of the transmission network .关键词
输电网/半不变量/Gram-Charlier级数/随机潮流Key words
transmission network/semi-invariant/Gram-Charlier series/stochastic load flow分类
信息技术与安全科学
