一种交直流混联电力系统潮流计算的研究

Research on Power Flow Calculation of AC/DC Hybrid Power System

高压直流输电与传统交流输电相比,有着跨区域远距离输电、系统间非同步互联等方面的优势。由于输电性质的不同,系统分析对象就由纯交流系统发展为交直流混联电力系统,分析理论也应在原有的交流理论上修正。对交直流混联电力系统的潮流计算进行研究,基于线性N维空间有解性原理,提出扩展变量法扩展交流系统雅可比矩阵,使直流系统和交流系统统一联立,求解交直流系统的潮流参数。

Compared with traditional AC transmission,high voltage direct current(HVDC)transmission has advantages of long-distance transmission across regions,asynchronous interconnection between systems,etc.Because of the different natures of transmission,the analysis of objective system is transferred from pure AC system to AC/DC hybrid power system,and the analysis theory should be revised based on the original AC theory.The power flow calculation of AC/DC hybrid power system is studied,which is based on the solvability principle of linear N-dimensional space.The extended variable method extended AC system Jacobian matrix is proposed and the DC system and the AC system are unified to solve the power flow parameters of the hybrid system.