电力系统保护与控制Issue(17)：103-108,6.
考虑感应电动机故障中电磁转矩变化的节点暂态电压评估方法
Assessment method of transient voltage stability of load bus considering the changing of induction motor electromagnetic torque in fault
摘要
Abstract
The transient voltage stability has a close relationship with dynamic load characteristic. The load characteristic of induction motor is the important reason causing transient voltage stability. There have been studies on using the critical clearing time to assess transient voltage stability of load node, but the relevant research ignores the effect of the change of the electromagnetic torque of induction motor on the critical clearing time in fault. In order to obtain the critical clearing time accurately, the critical clearing time which considers the change of the electromagnetic torque of induction motor in fault is researched, the mathematical model of electromagnetic torque of induction motor is established, and the critical clearing time is obtained. The critical clearing time reflects transient voltage stability of load node. Simulation and comparison of EPRI36 node system are conducted in power system analysis software (PSASP), and the result verifies the effectiveness of this method. <br> This work is supported by National Natural Science Foundation of China (No. 51037003) and National High-tech R&D Program of China (863 Program) (No. 2011AA05A119).关键词
暂态电压稳定/感应电动机/三相短路故障/电磁转矩/极限切除时间Key words
transient voltage stability/induction motor/three-phase short-circuit fault/electromagnetic torque/critical clearing time分类
信息技术与安全科学引用本文复制引用
宋帅,张英敏,李兴源..考虑感应电动机故障中电磁转矩变化的节点暂态电压评估方法[J].电力系统保护与控制,2013,(17):103-108,6.基金项目
国家自然科学基金重点项目（51037003）；“863” （）
