摘要
针对变速抽蓄机组在转速快速调节时,交流励磁系统的直流侧容易出现过压或者欠压的现象,根据交流励磁电机模型和变频器直流侧功率平衡的原理,对变频器的网侧变换器在常规的双闭环控制的基础上增加功率前馈控制分量,并通过MATLAB/Simulink仿真与实物平台的动模实验,验证了优化后的网侧变换器控制系统具有良好的控制性能,改善了直流侧电压的稳定性,具有一定的参考价值。
When the speed of variable-speed pumped-storage unit is regulated quickly,the DC voltage of the AC excitation system is prone to overvoltage or undervoltage.To solve this problem,based on the mathematical model of the doubly-fed induction generator and the principle of power balance on the DC side of the converter,the power feed-forward control component is added to the double closed-loop control strategy of the grid-side converter.For verification,the simulation model is established in MATLAB/Simulink,and the dynamic model experiment is carried out on physical platform.The simulation and experiment results show that the stability of DC voltage is improved,which proves that the optimized control system of the grid-side converter has good control performance and has certain reference value.
作者
王舒
梁廷婷
孙静
汪宇怀
WANG Shu;LIANG Tingting;SUN Jing;WANG Yuhuai(NARI Group Corporation(State Grid Electric Power Research Institute),Nanjing 211106,Jiangsu,China;NARI Technology Company Limited,Nanjing 211106,Jiangsu,China;State Grid Xinyuan Company Limited,Beijing 100761,China;State Grid Zhejiang Electric Power Company Limited,Hangzhou 310007,Zhejiang,China)
出处
《水力发电》
北大核心
2020年第9期102-105,共4页
Water Power
基金
国家电网公司总部科技项目“大型变速抽水蓄能机组关键技术自主化工程应用研究”资助(521104180013)。
关键词
变速抽蓄机组
交流励磁系统
网侧变换器
功率前馈控制
variable speed pumped-storage unit
AC excitation system
grid-side converter
power feed-forward control
作者简介
王舒(1985-),男,江苏南通人,高级工程师,硕士,研究方向为电力电子.
