基于模拟退火遗传算法的交直流系统无功优化与电压控制研究

摘要

The AC/DC hybrid transmission system is developing fast, and it plays an important role in region connection. At the same time, it raises out new demands. A new method based on simulated annealing genetic algorithm is proposed to optimize reactive power and realize voltage control. Firstly, it builds the model of AC/DC transmission system, whose objective is the minimum of cost of power loss and reactive power generated by generators and reactive power compensation, the constraints consideration of DC converter, controlling angle, node voltage and power flow balance. Then it gives out the step to solve the model by simulated annealing genetic algorithms. At last, it uses IEEE30, which is added to DC transmission system, to prove that this paper’s method is more effective and the results is better.%交流与直流输电配合进行的混合输电系统不断建设，逐渐成为远距离输电以及区域互联的主要方式之一，其对无功平衡和电压稳定也提出了新的要求。提出了一种基于模拟退火遗传算法的交直流系统的无功优化以及电压控制方法。建立了交直流混合输电系统潮流计算模型。给出了混合输电系统的无功优化模型：以网损和无功经济成本最小为目标函数，约束考虑了直流换流器变比、控制角、节点电压限制以及潮流约束。然后给出了采用模拟退火遗传算法求解该模型的步骤。最后采用增加直流输电线路的 IEEE30节点进行验证，结果表明该方法具有收敛性好、结果更优等优点。