满足静态电压稳定增强要求的发电机最佳调整方法

为增强电力系统的静态电压稳定性，同时最大限度地减小运行人员的操作工作量，提出了一种综合经济性和静态电压稳定性的发电机最佳调整模型。该模型以发电机参与调整台数最少和发电成本最小为目标，约束条件包括系统负荷裕度满足设定提升要求和电力系统安全运行要求。该问题的数学本质是一个多目标非线性混合整数规划问题。为实现上述问题的求解，首先以线性灵敏度方法快速估算所需调整出力的发电机，求解控制数量最少的整数规划问题。然后以发电成本最小为目标，利用线性规划法求解各台发电机的调整出力值。最后在IEEE39节点算例和IEEE118节点算例进行仿真验证，结果表明所提模型与求解方法能很好地解决系统的静态电压稳定性增强控制问题。

Optimal generators re-dispatch method to meet the enhancement requirements of static voltage stability

To enhance the static voltage stability of power systems and minimize the workload of the operators, an optimal generator re-dispatch model is proposed that takes into account economy and static voltage stability of power systems. The model aims to minimize the number of generators to be adjusted and the generation cost, and the constraints include the demand improvement load margin and a secure operating requirement for power systems. By nature, the problem is a multi-objective nonlinear mixed integer programming problem. To solve the problem, first, the generators to be adjusted are quickly estimated by a linear sensitivity method to solve the integer programming problem with the minimum number of controls. Then, the adjusted output value of each generator is determined by an available linear programming method with the objective of minimizing the generation cost. Finally, simulation analysis is carried out on the IEEE 39-bus and IEEE 118-bus power system. The results show that the proposed model and method can solve the enhancement control problem of static voltage stability. This work is supported by the National Natural Science Foundation of China (No. 51707109).