考虑感应电动机负荷电磁暂态特性的系统短路电流计算方法  

A Short Circuit Current Calculation Method in Power System with Consideration of the Electromagnetic Transient Characteristics of Induction-Motor's Load

作　　者：尹建华[1] 

机构地区：[1]广东电网公司电力科学研究院,广州510600

出　　处：《南方电网技术》2010年第3期62-66,共5页Southern Power System Technology

摘　　要：首先分析了BPA程序所采用的二阶静态负荷模型对系统短路电流计算之前的潮流计算中迭代算法所涉及的问题,然后深入研究分析了感应电动机负荷特性及其对系统短路电流计算的影响。建立了在现有以恒定阻抗作为系统各节点负荷的短路电流计算方法中考虑适应感应电动机电磁暂态过程的系统短路电流的修正计算方法,提出了相应的系统短路电流计算程序编制的具体实施思路。初步验证了本文所提出的方法的可行性。Firstly, a second order static load model used in BPA package has been analyzed for some problem arouse in power flow iteration before performing the short circuit current calculation （SCC） of the system. And then, the load characteristic of induction motor and its effect on SCC had been researched throughly. A new SCC method being considering of induction motor in short transient process of fault in power system has substituted the one which only using constant impedance to system bus load. As while the programming schema and more detail about SCC calculation modification also has been proposed. Furthermore, then methods has been validated with a IEEE 9-noded system practically.

关 键 词：BPA 负荷模型 感应电动机 短路电流计算 电磁暂态过程 

分 类 号：TM744[电气工程—电力系统及自动化]