中国电机工程学报2011，Vol.31Issue(10)：95-101,7.
大规模交直流系统潮流计算的实用化模型
Practical Model for Large-scale AC-DC System Power Flow Calculation
摘要
Abstract
This paper proposes a robust, non-divergent model for large-scale AC-DC power flow calculation. By introducing relaxation parameters into power flow equations, the conventional power flow model was turned into a non-linear programming model to minimize the sum of squares of the relaxation parameters with operation constrains and DC station control modes. The interior point method (IPM) was used to solve the model. The dimension of the correction equations was reduced into the same size as that of conventional Newton-Raphson method. Cholesky factorization with approximation minimum degree (AMD) algorithm was utilized to solve the correction equations to improve the implementation efficiency. The proposed model and algorithm have the following features: 1) no special start process is needed; 2) it has strong robustness for power grids with plenty of small or negative impedance branches; 3) it has robust convergent property in the feasible region, around the boundary of the feasible region and beyond the feasible region. Power flow calculation on test system with 6891 buses and 8 high voltage direct current (HVDC) transmission lines validated the efficiency of the proposed algorithm.关键词
交直流潮流计算/牛顿-拉夫逊法/最优乘子/高压直流输电/最小化技术/内点法分类
信息技术与安全科学引用本文复制引用
覃智君,侯云鹤,吴复立..大规模交直流系统潮流计算的实用化模型[J].中国电机工程学报,2011,31(10):95-101,7.基金项目
美国电力科学研究院研究基金(EP-P35571/C16133,EPP35424/C16059):香港研究资助局研究基金(RGC-HKU 7124/10E):香港人学基础研究基金(201001159007). （EP-P35571/C16133,EPP35424/C16059）
