摘要
泵站水泵反向发电可采用变频机组运行方式,但此方式时水泵发电不能处于最佳工作效率。针对泵站水泵发电运行时的特殊工况,提出用四象限高压变频变压技术使水泵发电时刻处于最优状态,在提高发电效率的同时,还避免了并网发电时对发电机所造成的冲击。分析了在水泵采用四象限变频变压技术发电运行时机组起动和并网方法,并对其发电过程进行了仿真。同时,针对水泵反向发电运行工况,提出了四象限变频器的特殊控制策略。
A pump may work at the generator mode using frequency units,but this mode is off its peak efficiency at any time.Using a four-quadrants medium voltage converter,a pump can work as a generator at its peak efficiency all the time,while the surge that happens at its motor-to-generator-mode transition stage can be avoided.The topology of such a converter and the working principle of generator-mode pump using the converter are analyzed and simulated in this paper.
出处
《水力发电学报》
EI
CSCD
北大核心
2011年第5期216-219,228,共5页
Journal of Hydroelectric Engineering
关键词
水利水电工程
水泵反向发电
四象限
高压变频器
water resources and hydropower engineering
pump working at generator mode
four-quadrants
medium voltage converter
connecting to the grid
