中国电力2017，Vol.50Issue(12)：38-43,6.DOI:10.11930/j.issn.1004-9649.201711231
大型调相机惰速同期并网可靠性研究
Reliability Research on Idle Speed Synchronization of Large Condenser
摘要
Abstract
The output side of the static frequency converter (SFC) which is not equipped with step-up transformer can reduce the overall cost of installing the condenser,but then the conditions of grid connection will become harsh when the rotor speed is no longer controllable.In order to improve the grid-connected reliability of synchronization,firstly the relationship is established between the inrush current,frequency difference and angular difference,secondly the existence probability of synchronous point are researched on,then some suggestions that select a small lag angle in the positive frequency difference,a small advanced angle in the negative frequency difference and so on are put forward to improve the reliability of synchronization.Based on the example,the existence probabilities and permissible frequency differences are studied that verify the proposed methods can effectively improve the reliability of synchronization.关键词
调相机/静止变频器/惰性降速/同期/并网Key words
condenser/static frequency converter/idle speed/synchronization/grid connection分类
信息技术与安全科学引用本文复制引用
曾先锋,侯炜,陈俊..大型调相机惰速同期并网可靠性研究[J].中国电力,2017,50(12):38-43,6.基金项目
国家电网公司科技项目(上海庙—临沂±800 kV特高压项目山东临沂换流站调相工程)This work is supported by Science and Technology Project of State Grid Corporation of China. （上海庙—临沂±800 kV特高压项目山东临沂换流站调相工程）
