【摘要】 推导了电力系统电磁暂态仿真软件EMTDC中的三相异步电动机模型,介绍了电动机暂态过程的求解算法。基于EMTDC对单相接地、断相和机械堵转等电动机常见故障进行了仿真计算,获得了各种故障情况下的特征波形,并进行了定量误差分析。验证了EMTDC电动机模型和算法的有效性和正确性,为电动机故障诊断和保护的深入研究提供了一种有效的仿真工具。更多还原

【Abstract】 The three-phase asynchronous induction motor models in EMTDC are deduced and the solution algorithms of induction motor transient process are introduced.Different fault types of common induction motor are simulated based on EMTDC,including single phase grounding,open circuit and mechanical rotor blocking.Their characteristic waveforms are introduced and the quantitative error-analysis is presented.The effectiveness and correctness of models and algorithms of induction moto r in EMTDC are verified by the results,which provides an effective simulation platform for the further fault diagnosis and protection study of induction motors.This project is supported by Natural Science Foundation of Guangdong(990579).更多还原