Dynamic equivalence of torsional interaction in multi-identical-machine power system

作者：Yang Fan^*; Wang Xitian; Xu Yingxin; Chen Chen

来源：Electric Power Components and Systems, 2007, 35(5): 525-537.

DOI：10.1080/15325000601078161

• dynamic equivalence
• multi-identical-machine power system
• subsynchronous resonance (SSR)

Usually there are several identical generation units in a power plant. A dynamic equivalence approach is developed or the torsional interaction analysis of multi-identical-machine power system. By similarity transformation, the state matrix of an N-machine system can be transformed to a block diagonal matrix with N blocks on the diagonal, N - 1 of which are the same. Therefore, an N-machine system is simplified into the study of two types of simple single-machine systems, however all the information on system eigenvalues are preserved. The equivalence method was applied to a practical power system in Inner Mongolia, North China. The results achieved validate the functionality of the equivalence method.

• 出版日期2007-5
• 单位上海交通大学