迭代法求取保梯电抗X_p  

Determination of Potier reactance X_p from the iterative method

作　　者：苟智德[1] 孙力[2] 富立新[1] 孙玉田[1] 康尔良[3] 

机构地区：[1]哈尔滨大电机研究所电机室,黑龙江哈尔滨150040 [2]哈尔滨工业大学电气工程系,黑龙江哈尔滨150001 [3]哈尔滨理工大学电气工程系,黑龙江哈尔滨150080

出　　处：《电机与控制学报》2007年第2期153-157,共5页Electric Machines and Control

摘　　要：为了准确测取同步发电机的保梯电抗Xp,提出了应用保梯图法求取励磁电流,求取的励磁电流值与实际运行的励磁电流值进行对比并调整Xp值,再利用发电机运行数据和Xp调整值,重新应用保梯图法并进行迭代,求取保梯电抗Xp的一种迭代方法。这种迭代方法不仅可以准确地测试保梯电抗,而且对于稳态运行时励磁电流、功角、电枢反应的分析都有重要的作用。通过对一台220MW汽轮发电机的保梯电抗进行测试分析,证明了该方法误差很低。An iterative method is proposed to determine Potier reactance Xp. The excitation current is determined by Potier diagram and Xp value is adjusted after contrasting the determined excitation current with the measured excitation current. Then using Potier diagram again and iterating the process, Potier reactance Xp is obtained with the operating generator data and the adjusted Xp Value. This iterative method can not only determine Potier reactance Xp accurately, but use to analyse the excitation current, load angle and armature reaction. The rsults show that the error is very low by testing and analysing a 220MW turbine generator Potier reactance Xp.

关 键 词：保梯电抗Xp 励磁电流 保梯图法 迭代法 

分 类 号：TM301.4[电气工程—电机]