基于支路耗散功率转归分量的最优潮流模型与算法

针对最优潮流模型中线路安全稳定约束表达式的复杂性，运用支路耗散功率的转归分量方法给出了一种以电源出力为变量的近似线性表达式，构建了一种最优潮流模型。对模型中线性度不同的约束，采用逐次线性化和逐段线性化相结合的方法处理。在求解过程中直接考虑线路安全稳定约束，避免了牛顿法被动校验和变更约束带来的模型和求解的低效性。仿真结果表明，文中的模型和算法改进了最优潮流的收敛性和求解速度。

A Novel Model and Algorithm for Optimal Power Flow Using Imputation Component of Dissipation Power in Branches

In view of the complexity of expressions of security and stability constraints for transmission lines in optimal power flow model, by use of imputation components of branch dissipation power in branches an approximate linear expression in which the generator power outputs serve as control variables is given, and an optimal power flow model is built. The constraints with different linearity in this model are dealt with by an approach that combines successive linearization with piecewise linearization, and in the solving process the security and stability constraints of transmission lines are directly considered to avoid the low-efficiency of both model and solution due to the passive calibration and modifying working constraints in Newton method. Simulation results show that the proposed model and algorithm can improve the convergence of optimal power flow and speed up the solution.