自并励励磁系统灭磁容量计算与仿真分析  

Calculation and Simulation Analysis of De-excitation Capacity of Self-shunt Excitation System

作　　者：杨玲[1] 许其品[1] 朱宏超[1] 谢燕军[1] 林元飞 李厚俊 YANG Ling;XU Qipin;ZHU Hongchao;XIE Yanjun;LIN Yuanfei;LI Houjun(NARI Technology Co.,Ltd.,Nanjing 211106,Jiangsu,China)

机构地区：[1]国电南瑞科技股份有限公司,江苏南京210006

出　　处：《四川电力技术》2023年第4期31-36,共6页Sichuan Electric Power Technology

摘　　要：为保证发电机发生短路等故障时,灭磁系统能够安全、迅速地给发电机灭磁,并将发电机转子绕组中的磁场能量消耗在灭磁回路耗能元件中,文中通过求解同步发电机的五绕组微分方程并计及饱和,采用Matlab编写程序模拟空载误强励、负载误强励、负载三相金属性短路等工况下的灭磁过程,以某电厂参数进行仿真分析计算,并对照实际详细数学分析说明仿真计算结果精确可靠,可用于各种机组的灭磁容量设计,并为未来智能化励磁灭磁系统分析提供技术支撑。In order to ensure the safe and quick de-excitation of generator by de-excitation system in case of short circuit and other faults of generator,and consume the magnetic field energy in rotor winding of generator in energy consuming elements of de-excitation circuit,the five-winding differential equation of synchronous generator is solved considering saturation,and the de-excitation processes under no-load false forced excitation,load false forced excitation and load three-phase metallic short circuit are simulated by Matlab.Taking the parameters of a power plant for simulation and calculation,the results are verified to be accurate and reliable according to actual and detailed mathmatic analysis,which can be used to design de-excitation capacity of various units and provide technical support for the analysis of intelligent de-excitation system in the future.

关 键 词：五绕组微分方程 空载误强励 负载误强励 三相短路 灭磁容量 

分 类 号：TM34[电气工程—电机]