一种改进的最优潮流算法研究

A Study on an Improved Algorithm for Optimal Power Flow

提出一种改进的信赖域内点算法.新方法无须与潮流计算配合增加算法通用性,并由常规潮流获得初始点改善信赖域子问题可行性;此外,改进信赖域子问题模型提高计算精度,调整收敛判据加快计算速度;由现代内点法求解信赖域子问题,并构造简约修正方程减小计算量.用改进的方法求解电力系统中以发电费用最小为目标的最优潮流问题.通过对IEEE14-300测试系统的数值仿真实验,证明所提出的算法是正确和有效的.

The paper deals with an improved trust region interior point method. The new method needs not coordinate with the power flow to enhance the currency trait of the algorithm. The initial point is attained through the routine power flow calculation and the feasability of the algorithm is amended accordingly; Moreover,bettering the mod.el of the trust region subproblem to increase the precision of the calculation and adjusting the tolerances ＂to speed up the computation ,the modem interior point method is used to resolve the trust region subproblem and a reduced correction equation is derived to reduce the expenses of the computation. Problem of Optimal Power Flow,whose objective function is the general generation cost,is resolved by the new method. Numerical simulation on IEEE14 -300 test systems shows that the proposed method is proper and efficient.