基于遗传算法的运行方式组合方法  

Method for the combination of power system operation mode based on genetic algorithm

作　　者：周文越[1] 吕飞鹏[1] 李鹤[2] 

机构地区：[1]四川大学电气信息学院,四川成都610065 [2]重庆市电力公司检修分公司,重庆400039

出　　处：《电力系统保护与控制》2013年第10期51-55,共5页Power System Protection and Control

摘　　要：为了解决现有方法计算速度慢且准确度低的问题,提出了一种利用遗传算法求解运行方式组合的方法。首先,将厂站的运行方式反映到电网节点阻抗矩阵中,进而将整定计算所需的故障电流和分支系数用节点阻抗矩阵元素表示。然后,分别以最大、最小故障电流和分支系数为目标,建立了求解最优厂站运行方式组合的数学模型。最后,考虑到模型离散、非线性的特点,利用遗传算法进行求解,得到各种极端情况下的厂站运行方式组合。该方法能快速准确地找出整定计算所需的厂站运行方式组合。通过算例验证了该方法的正确性和实用性。For solving the problem of slow calculation and low accuracy in the existing methods, a method that can get the operation mode combination of power system by genetic algorithm is proposed. Firstly the operation mode is mapped to nodal impedance matrix of power system. The fault current and branch parameters are expressed by the element of nodal impedance matrix. Then the mathematical model is established for getting the optimal combination of power system with the objective of smallest and biggest fault current and branch coefficient respectively. Finally, considering the feature of model which is discrete and nonlinear, the model is solved by genetic algorithm which can get the combination of power system in extreme case quickly and accurately. The correctness and practicability of the proposed method are verified by an example.

关 键 词：继电保护 整定计算 厂站 运行方式组合 遗传算法 

分 类 号：TM774[电气工程—电力系统及自动化]