基于VSC-HVDC稳态响应的解析求解方法研究  

Analytic Method for Solving Steady-state Response of VSC-HVDC

作　　者：邬捷龙 杜一盟 袁霞[3] 

机构地区：[1]国网陕西省电力公司,陕西西安710048 [2]中国能源建设集团陕西省电力设计院有限公司,陕西西安710054 [3]西安交通大学电气工程学院,陕西西安710049

出　　处：《陕西电力》2016年第4期42-45,50,共5页Shanxi Electric Power

摘　　要：对基于电压源换流器的柔性直流输电系统的数学模型和仿真算法进行了研究,提出利用解析法求解电压源型高压直流输电(VSC-HVDC)的动态响应解析解。首先,利用开关函数建立双端VSC-HVDC的详细动态模型,进一步借助于开关函数矩阵得到相应的状态矩阵方程,最后,对非齐次线性系统求解得到VSC-HVDC的稳态动态响应。通过与数值计算方法结果相比,验证了解析计算算法的有效性,得到双端VSC-HVDC稳态响应的解析解,精确性高,且该方法计算时间大大缩短,可以应用于电力系统混合仿真以及谐波分析。The mathematical model and simulation algorithm are studied which are based on voltage source converter of flexible HVDC system. A new method is presented for solving dynamic response of the steady-state solution on VSC-HVDC. This method fully accounts for the switching process of VSC as modeling the detailed system equation of state, and calculates the non- homogeneous linear equation sets for steady dynamic response of VSC-HVDC. At last, compared with the result of program in MATLAB and the electromagnetic transient simulation results of PSCAD, the feasibility of analytic calculation is verified, it is proved that the result has high precision, moreover the simulation time is shortened greatly, the method can be used in hybrid simulation ＆ harmonic analysis.

关 键 词：解析法 电压源型高压直流输电 稳态响应 动态仿真 开关函数 

分 类 号：TM46[电气工程—电器]