基于改进连续潮流法的电压稳定极限计算方法

Calculation Method of Voltage Stability Limit Based on Improved Continuous Power Flow Method

针对电压稳定性分析连续潮流法的计算效率、精度及收敛性问题,提出了一种改进型的连续潮流法。该方法在参数化中,有机结合了物理参数化和局部参数化在不同区域的优点,在校正过程引入了一种新的预测-校正法,在步长控制中,提出了变步长控制函数,极大地提高了算法的计算精度、效率和收敛性。最后通过实例证明该方法可以提高连续潮流法分析电压稳定性的效率,并验证了该方法的有效性。

Targeting the calculation efficiency,accuracy and convergence of continuous power flow method for voltage stability analysis,this paper proposes an improved continuous power flow method.In the parameterization,this method combines the advantages of physical parameterization and local parameters in different regions.A new prediction-correction method is introduced in the correction process.In step size control,the proposed variable step size control function can adjust the step size.The calculation accuracy,efficiency and convergence of the method is greatly improved.Finally,the effectiveness of the method is verified through an case,and the efficiency of the continuous power flow method in analyzing the voltage stability is improved.