摘要
针对带谐波补偿绕组的变压器式可控电抗器,分析了其三绕组布置方式及其谐波补偿性质。在此基础上研究了晶闸管支路断开时,在LC滤波器最小无功容量的条件下,n次滤波支路所产生的单相CRT容性电流与额定电流的比值,表明这种CRT具有容性无功补偿的特点。文中建立了带谐波补偿绕组的三相CRT无功补偿系统的MATLAB仿真模型,对容性无功补偿的性质进行了研究,进一步对CRT的电压-无功功率特性进行了分析,结果验证了理论分析的有效性。
Controlled reactor of transformer type with harmonic-compensation winding is studied in this paper based on the analysis of the windings arrangement and harmonic characteristic. The ratio of capactive current that is derived from nth LC fitlers to nominal curent of single phase is obtained when thyritor branch is open and reactive power capacity of LC filter is minimum. All analyses show the capacitive reactive power compensation of the CRT. The MATLAB model of the three phase CRT is built to verify the capacitive reactive power compensation characteristic,and the U-Q characteristic of CRT is also analyzed. The results demonstrate that the theoretical analysis is effective.
出处
《电工电能新技术》
CSCD
北大核心
2014年第6期41-46,共6页
Advanced Technology of Electrical Engineering and Energy
基金
国家自然科学基金资助项目(51167009
51367010)
关键词
变压器式可控电抗器
短路电抗
谐波
LC滤波器
最小无功容量
容性无功补偿
controlled reactor of transformer type
short circuit reactance
harmonic
LC filters
minimum reactive power capacity
capacitive reactive power compensation
