摘要
阐述了电力系统次同步谐振和自励磁现象的基本原理,针对多机系统,应用线性网络理论的系统公式法建立适用于次同步谐振和自励磁分析的网络状态方程,结合同步电机状态方程,推导多机系统机网状态量接口方法,建立系统状态方程组,并可由特征根判断系统是否发生次同步谐振或自励磁,由相关因子判断次同步谐振或自励磁影响因素。实例计算表明,该方法是可行的。
The basic principle of subsynchronous resonance（SSR） and self-excitation is presented.Utilizing the formula of linear network theory,a network state equation suitable for the analysis of SSR and self-excitation is built.Combining with state equation of synchronous generator,a method to interface the state variables of generators with those of network is deduced,and the state equations of power system are built.Whether SSR or self-excitation occurs or not can be judged by eigenroots and the impacting factors on SSR or self-excitation can be judged by correlation factors.Case calculation results show that the proposed method is feasible.
出处
《电网技术》
EI
CSCD
北大核心
2011年第6期88-94,共7页
Power System Technology
关键词
次同步谐振
自励磁
状态空间
接口
相关因子
subsynchronous resonance（SSR）
self-excitation
state-space
interface
correlation factor
