基于改进和声搜索算法线路过载控制策略研究

Research on Line Overload Control Strategy Based on Improved Harmony Search Algorithm

为避免因切除故障线路引起潮流转移造成其它正常线路过载的问题,提出了一种基于改进和声搜索算法的线路过载控制策略。首先,构建包含发电机组与用户负荷有功调整最小和电压偏移最低的双目标优化控制模型;然后,根据所建模型的特点引入基本和声搜索算法,为进一步提高算法收敛性和搜索速度,采用均匀分布的初始和声库及变维数和声记忆库对其进行改进,并应用于该模型的求解,得到线路过载控制策略;最后,采用陕西省实际电网作为算例验证了所提控制策略的有效性。

In order to avoid overload of other normal lines caused by power flow transfer caused by fault line removal,a line overload control strategy based on improved harmony search algorithm was proposed.Firstly,a double objective optimization control model with minimum active power adjustment and minimum voltage offset was constructed.Then,according to the characteristics of the model,the basic harmony search algorithm was introduced.In order to further improve the convergence and search speed of the algorithm,the uniformly distributed initial harmony database and variable dimension harmony memory database were used to improve the algorithm,and were applied to the model.Finally,an actual power grid was taken as an example to verify the effectiveness of the proposed control strategy.