现代电力2012，Vol.29Issue(5)：22-27,6.
忽略电磁暂态对低频振荡分析的影响
Influence of Neglecting Electromagnetic Transients on Low-frequency Oscillation Analysis
摘要
Abstract
The complex torque coefficients for the three low-frequency oscillation models of one-machine system including SMI+LM1 (original), SM2 + LM2 (only neglecting electromagnetic transient) and SM3+LM3 (neglecting both electromagnetic transient and angular speed) are deduced with and without the considering of resistance effect in this paper. By comparing complex torque coefficients of SM1 + LM1 with SM2+LM2 and SM3+LM3, the effect of neglecting electromagnetic transient on low-frequency oscillation is analyzed. The study results show that, SM1+LM1 and SM3 + LM3 have the same damping for their low frequency oscillation modes without considering of the resistance effect, while SM2+LM2 has smaller damping for this case. On the other hand, the damping for the low frequency oscillation modes for SM1+LM1 decreases with the resistance increasing, but the damping for SM2 + LM2 and SM3 + LM3 increase for this case. Thus, the simplified models can gain the optimized results for the industry applications. In the end, the above observations are validated by eigenvalue method.关键词
同步电机模型/电磁暂态/低频振荡/复转矩系数/阻尼Key words
synchronous machine model/ electromagnetic transient/ low-frequency oscillation/ complex torque coefficients/ damping分类
信息技术与安全科学引用本文复制引用
陈武晖,汪旎,孙欣,刘辉,谭伦农,李正明..忽略电磁暂态对低频振荡分析的影响[J].现代电力,2012,29(5):22-27,6.基金项目
江苏省科技支撑计划(BE2011143) （BE2011143）
江苏大学高级人才启动项目(11JDG027) （11JDG027）
国家自然科学基金项目(51007032) （51007032）
