考虑低压释放特性的双机综合负荷模型参数识别策略研究

Research on Parameter Identification Strategy of Dual Motor Load Model Considering Low Pressure Release Characteristics

首先介绍了考虑低压释放特性的综合负荷模型,然后从电动机聚类和实际负荷类型两方面分析了双机和单机模型各自的适用情况。通过对双机模型轨迹灵敏度分析,得出大电动机和小电动机参数不能一起辨识。从电动机稳定性和低压释放特性分析,提出了固定大电动机参数辨识小电动机参数的辨识策略。仿真算例表明提出的双机参数辨识策略精度较高,能提高参数辨识精度。

The synthesis load model is introduced considering the characteristics of low voltage release firstly.Then the twomachine and single-machine models are analyzed from the aspects of motor clustering and actual load types.Through the analysis of trajectory sensitivity of the dual motor model,it can be concluded that the parameters of large motor and small motor can not be identified together.Based on the analysis of motor stability and low voltage release characteristics,the identification strategy to identify parameters of a small motor with large motor parameters is proposed.The simulation example shows that the proposed dual motor parameter identification strategy has higher precision and can improve the parameter identification accuracy.