基于PSO-SVM的同步调相机无功出力建模

Synchronous Condenser Reactive Power Output Model Based on PSO-SVM

同步调相机独有的无功输出特性满足电网动态无功需求,但其具有强耦合性、非线性,常规方法难以精确建立其无功出力模型。提出一种基于粒子群优化支持向量机(PSO-SVM)的同步调相机无功出力模型,以同步调相机励磁电流和励磁电压为输入,无功功率和系统电压为输出。以基于PSCAD/EMTDC仿真软件的同步调相机无功调节计算结果作为训练样本和测试样本,利用PSO对SVM的惩罚参数、核函数参数及损失函数参数进行优化,建立了基于PSO-SVM的同步调相机无功出力模型。仿真结果表明,所建立的同步调相机无功出力的PSO-SVM模型具有良好的精度和泛化能力,可为同步调相机的运行状态预测提供一定参考依据。

The unique reactive power output characteristic of synchronous condenser can meet the dynamic reactive power demand of power grid,but due to strong coupling and nonlinearity,it is difficult to establish the reactive power output model accurately by general analysis methods.A synchronous condenser reactive power output model based on particle swarm optimization-support vector machine(PSO-SVM)is proposed,which takes the field current and field voltage as its inputs and the reactive power and system voltage as its outputs.The simulation results of the reactive power regulation of synchronous condenser in PSCAD/EMTDC simulation software were used as training samples and test samples,and the penalty parameters,kernel parameters and loss function parameters of SVM were optimized by using PSO,and the reactive power output model of synchronous condenser based on PSO-SVM was established.The simulation results show that the established PSO-SVM model for the reactive power output of the synchronous condenser can improve the accuracy and generalization ability,which can provide some references for the operation state prediction of the synchronous condenser.