城市电网骨干网架优化的数学模型与算法

Study on City Grid Network Frame Optimization Mathematical Model

针对城市电网规划的骨干网架优化问题,重点研究了基于整数遗传算法的城市网架的规划模型的建立,采用改进的整数遗传算法,基于供用电节点矩阵的线路路径的自动识别方法和配电网络中功率、电压等约束的自动计算方法,实现了城市电网骨干网架的优化。算例优化表明,该文方法实用性,适用性均较强,可以快速有效地得到网架结构规划全局最优解。

Study on city grid network frame optimization mathematical model was put forward; An automatical method for identifying electricity flow route based on electricity node matrix transformation was deduced, an automatically calculating program of electricity power and voltage of different nodes was developed, an dynamic penalty function was used to deal with the constrain conditions. Hence, an city grid network structure and conductors cross sections simultaneous optimization model and its solution method based on integer code genetic algorithm were obtained.Electricity network examples were used to test this method, and its results were compared with optimized schemes based on traditional optimization method, which show that the simultaneous optimization model and algorithm can re- duce the electricity conductors cost of distribution network,and it can effectively get global optimization scheme of city grid net- work.