摘要
变速抽水蓄能机组可实现电网削峰填谷的无级调节,同时改善水泵水轮机的水力性能、扩大运行范围、提高效率。针对交流励磁机组励磁系统复杂且只适合在新建站应用等特点,提出全功率变速机组方案,对比分析2种变频器的特点,选择了适用于中大容量机组的电流源型拓扑,分别给出在启动、抽水、发电等工况下的控制策略,并结合该拓扑特点和抽水蓄能电站的需求,对黑启动和谐波问题给出解决方案。实验结果表明全功率变速方案可行,所提控制策略正确,为工程应用提供了理论基础。
The variable speed pumping storage unit can realize the stepless adjustment of the peak filling valley of the power grid,and at the same time improve the hydraulic performance of the pumping turbine,expand the operating range,and improve the efficiency.In view of the complex excitation system of alternating exciter group and its only suitable for application in new station,the scheme of full power variable speed unit is put forward,the characteristics of two kinds of inverter are compared and analyzed,and the current source topology suitable for medium and large capacity unit is selected.The control strategies of starting,pumping and generating power are presented separately,and the solutions to the black start and harmonic problems are given based on the topology characteristics and the demand of pumping storage power station.The experimental results show that the full power variable transmission scheme is feasible and the control strategy is correct,which provides a theoretical basis for engineering application.
作者
徐斌
金龙云
熊健
张继权
XU Bin;JIN Long-yun;XIONG Jian;ZHANG Ji-quan(State Network Jilin Province Electric Power Co.,Ltd.,Power Dispatch Control Center,Changchun 130000,China)
出处
《电力电子技术》
CSCD
北大核心
2020年第7期33-35,共3页
Power Electronics
关键词
电站
抽水蓄能
黑启动
控制策略
power station
pumping storage
black start
control strategy
