电力系统中长期过程动态仿真的组合积分算法  

Combined integral method for mid/long-term dynamic simulation of power system

作　　者：张芳[1] 仇雪芳 李传栋[2] 

机构地区：[1]天津大学智能电网教育部重点实验室,天津300072 [2]福建省电力有限公司电力科学研究院,福建福州350007

出　　处：《电力自动化设备》2017年第2期113-120,共8页Electric Power Automation Equipment

摘　　要：电力系统中长期过程具有非线性、强刚性的特点,其仿真时间框架长,与电力系统机电暂态过程相比,中长期过程对数值积分算法的数值稳定性、收敛性和计算效率的要求更高。针对此问题,将隐式梯形积分法和多步高阶隐式Taylor级数法进行组合,提出新的组合积分算法。在机电暂态过程采用隐式梯形积分法,在中长期过程采用多步高阶隐式Taylor级数法。算例仿真与分析结果验证了新组合积分算法的有效性和可行性。The mid / long-term process of power system is nonlinear and strong stiff,its simulation time-span is long,and compared with the electromechanical transient process,it requires the numerical integral algorithm has higher numerical stability,convergence and computational efficiency. A new integral method combining the implicit trapezoidal integral method and the multi-step multi-derivative implicit Taylor series method is proposed. The implicit trapezoidal integral method is used in the electromechanical transient process while the multi-step multi-derivative implicit Taylor series method in the mid / long-term process.Results of case simulation and analysis show the effectiveness and feasibility of the proposed method.

关 键 词：电力系统 机电暂态 中长期动态 刚性系统 新组合积分算法 

分 类 号：TM761[电气工程—电力系统及自动化]