考虑电压相位的实用负荷模型参数辨识  

Parameters identification of practical load model with voltage phase considered

作　　者：孙冉[1] 刘利国[2] 黄桦[2] 陈谦[2] 鞠平[2] 

机构地区：[1]河南省电力公司调度通信中心,河南郑州450052 [2]河海大学可再生能源发电技术教育部工程研究中心,江苏南京210098

出　　处：《电力科学与技术学报》2012年第2期10-15,共6页Journal of Electric Power Science And Technology

基　　金：国家高技术研究发展计划("863"计划)(2011AA05A103)

摘　　要：目前电力系统感应电机负荷模型一般采用实用模型,参数辨识时仅采用电压有效值,而忽略电压相位和交轴电压分量.分析忽略交轴电压分量所需的条件,发现该条件通常难以满足.并提出考虑电压相位和交直轴电压分量的负荷建模实用模型,用于电力负荷参数辨识.不同故障下的算例结果表明,该实用模型比仅考虑电压有效值的实用模型,能更精确地辨识出负荷模型参数.The load model of induction motor is usually described by a utility model, in which the voltage phase and q-axis voltage component are neglected due to measurement reasons. The conditions for neglecting the q-axis voltage component were analyzed in this paper, and the results showed that the conditions can＇t be satisfied in most cases. Then the model with both d-axis and q-axis voltage components considered were proposed to identify the road parameters. Simulation results showed that the proposed model can achieve more accurate parameter comparing to the models with the voltage phase and q-axis voltage component neglected.

关 键 词：电力系统 负荷 参数辨识 实用模型 

分 类 号：TM743[电气工程—电力系统及自动化]