全控器件大型水轮发电机组自动励磁系统设计  

Design of automatic excitation system for largehydro-generator set with fully controlled device

作　　者：钱学敏 赵烽贵 杨刚 罗超 Qian Xuemin;Zhao Fenggui;Yang Gang;Luo Chao(Tianshengqiao First-Class Hydropower Development Co.,Ltd.,Hydropower Plant,Guizhou Xingyi,562400,China;Guizhou Chuangxing Electric Power Research Institute Co.,Ltd.,Guizhou Guiyang,550000,China)

机构地区：[1]天生桥一级水电开发有限责任公司水力发电厂,贵州兴义562400 [2]贵州创星电力科学研究院有限责任公司,贵州贵阳550000

出　　处：《机械设计与制造工程》2024年第5期46-50,共5页Machine Design and Manufacturing Engineering

摘　　要：为保证大型水轮发电机组稳定运行,设计了基于全控器件的大型水轮发电机组自动励磁系统,通过全控器件实现发电机组自动励磁控制。以电压源型脉冲宽度调制变换器为全控器件,采用基于直接电流控制方法的电压源型脉冲宽度调制变换器控制方案并补充阻尼,避免其直流侧电压异常波动,优化了励磁系统电流质量。制定基于占空比调节的斩波器控制方案,调节励磁电压的占空比,避免发电机组励磁电流异常变化,完成大型水轮发电机组自动励磁控制。实验结果表明,该系统有较好的控制效果,可在1 s内实现大型水轮发电机组的稳定。In order to ensure the stable operation of large hydro generator units,the automatic excitation system of large hydro generator units based on full control devices is designed.The automatic excitation control of the generator set is mainly realized through the full control device.The full control device is a voltage source pulse width modulation converter,which adopts the control scheme of the voltage source pulse width modulation converter based on the direct current control method to implement supplementary damping,ensure that the DC side voltage does not fluctuate abnormally,and optimize the current quality of the excitation system.It develops a chopper control scheme based on duty cycle regulation,adjusts the duty cycle of excitation voltage,avoids abnormal changes in excitation current of the generator set,and complets automatic excitation control of large hydroelectric generator sets.The results show that the system can ensure the stable operation of large hydraulic turbine generator units,and the control effect is good.It can achieve the stable control of large hydraulic turbine generator units within 1s,and provide reference for the control of hydraulic turbine generator units.

关 键 词：全控器件 水轮 发电机组 励磁系统 励磁电压 

分 类 号：TV734.21[水利工程—水利水电工程]