摘要
结合电动机产品样本数据,分别采用计算法、GB/T 21066-2007《船舶和移动式及固定式近海设施的电气装置三相交流短路电流计算方法》给出的推荐值和试验法3种方法进行计算,分析比较其计算结果的准确性,建议尽量按电动机容量相应的技术数据,用计算方法求电动机阻抗参数;并建议电动机厂商在样本中给出阻抗值,方便工程设计人员计算电动机短路电流。
Based on the sample data of motor,three methods,i. e. calculation method,recommended value and test method,of which the recommended value is recorded in the Electrical Installations of Ships and Mobile and Fixed Offshore Units—Procedures for Calculating Short-circuit Currents in Three-phase A. C.（GB/T 21066-2007）,are adopted respectively,so as to analyze and compare the accuracy of computations. It is suggested that the motor impedance parameter is determined by the calculation method according to the technical data of motor capacity,and that the impedance is available for the sample of motor manufacturer so that the engineering designer can calculate the short-circuit current of motor more easily.
出处
《建筑电气》
2016年第4期21-24,共4页
Building Electricity
关键词
异步电动机
电动机阻抗
参数计算
短路电流
堵转阻抗
时间常数
计算法
试验法
asynchronous motor
motor impedance
parameter calculation
short-circuit current
locked-rotor impedance
time constant
calculation method
test method
