摘要
电网互联和电力系统市场化发展趋势对暂态稳定分布式计算提出了要求。文中研究了电力非线性网络暂态稳定分布式仿真算法的计算效率问题,指出算法的瓶颈主要是子系统边界值的迭代求解计算,提出了改善非线性网络分布式求解效率的交接变量估计法,进行了数值验证,并与适于线性网络求解的并行处理方法、已有的电力网络暂态稳定初值估计法和交接变量调节法进行了比较。数值实验表明,文中提出的方法可在较大程度上稳定地改善暂态稳定分布式仿真分析的计算效率,与电力市场条件有一定的适应性。
To meet the demand for transient stability distributed simulation in the environment of power network interconnection and electricity market, the computation efficiency is studied for power nonlinear network transient stability distributed simulation. It is pointed out that the iterative computation of the subsystem boundary values is the main bottleneck. An efficiency enhancement method, inside-step cross-variable estimation (ICE) method, is put forward for nonlinear network distributed solution. A numerical validation is carried out, and the comparisons are provided with the parallel disposal method suited to linear network solution and the existing power network transient stability step initial-value estimation (SIE) method and inside-step cross-variable adjustment (ICA) method. It is testified from the numerical experiment that the ICE method can improve the distributed transient stability computation efficiency greatly and stably and is more adaptable to the electricity market environment.
出处
《电力系统自动化》
EI
CSCD
北大核心
2004年第14期28-32,99,共6页
Automation of Electric Power Systems
基金
国家自然科学基金资助项目(50177022)
高等学校博士学科点专项基金资助项目(20030056039)
高等学校优秀青年教师教学科研奖励计划资助项目
关键词
电力系统
非线性网络
暂态稳定仿真
分布式计算
并行算法
power systems
nonlinear network
transient stability simulation
distributed computation
parallel algorithm
