基于两种不同内点法的最优潮流建模与仿真

Modeling and Simulation of Optimal Power Flow Based on Two Different Interior Point Methods

用预测-校正内点法(predictor-corrector interior point method,PCIPM)最优潮流算法对原-对偶内点法(primal-dual interior point method,PDIPM)最优潮流算法进行改进。该方法在进行泰勒展开时保留了高阶项,首先通过修正方程计算仿射方向,在计算得到仿射扰动因子后回代入修正方程得到校正方向,进而得到修正量。最后用MATLAB语言编程实现了利用原-对偶内点法和预测-校正内点法进行潮流优化计算,并用不同算例进行了仿真验证。仿真结果表明预测-校正法具有比原-对偶法更好的收敛性。

It points out that optimal power flow algorithm of predictor-corrector interior point method （PCIPM） is evolved from primal-dual interior point method （PDIPM）. The method retains advanced items in Taylor expansion; firstly.it calculates affine direction by modified equation, substitutes the affine interference factors back to modified equation and concludes calibration direction, and hence correction. In the end, optimal power flow calculation is implemented via PCIPM and PDIPM by MATLAB programming. The simulation result shows that PCIPM is of better convergence property than PDIPM.