Cascading fault power flow calculation and fragile line identification based on line break distribution factor
Aiming at the problem that the traditional cascading fault power flow cannot calculate online and identify the fragile line of power grid in real time,a cascading fault power flow calculation and fragile line identification method based on line break distribution factor is proposed in the wide-area measurement environment.Firstly,the calculation method of grid injection shift factor in wide area measurement environment is given.Secondly,the relationship between injection shift factor,power transfer distribution factor and line break distribution factor is deduced to realize real-time solution of line break distribution factor.Thirdly,based on line break distribution factor,the calculation model of interlocking broken line power flow is established,and the measurement index of fragile line is proposed.Finally,the IEEE14 bus system is taken as an example to verify the effectiveness of the proposed method.
wide-area measurementfragile lineinjection shift factorpower transfer distribution factorline break distribution factor
NETL
NSTL
万方数据
