摘要
在电力系统的电磁暂态数字仿真中,非线性元件的非线性特性将导致数值计算中产生数值振荡。引入一种新的离散方法—改进的节点分析法,对非线性元件进行处理,离散化得到等效伴随电路,然后求解。通过Matlab软件仿真得到等效后的电压波形,与ATP和PSCAD模型比较,所提算法可以有效消除数值振荡,并不会出现'毛刺'现象,适合非线性元件的仿真。
In the power system electromagnetic transient simulation, non-linear eharactertics of non-linear elements leads to numerical oscillations in numerical integration. The paper introduces a new discrete method, namely, the advanced nodal analysis method, deals with non-linear elements, gets equivalent companion circuits after discretization and then solves the solution. The volatage wave from Matlab simulation, compared with ATP and PSCAD models, indicates the method can eliminate numerical oscillations without ＂shoot＂. It is applied to the non-linear power system simulation.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2011年第7期142-146,共5页
Power System Protection and Control
关键词
数值振荡
非线性元件
改进的节点分析法
伴随电路
numerical oscillations
non-linear elements
the advanced nodal analysis method
companion circuit
