含TCSC的电力系统潮流计算研究

为了寻找能够充分考虑FACTS元件对整个电力系统影响的潮流计算方法,在常规的潮流计算基础上,根据可控串联补偿器(TCSC)的工作原理和数学模型,采用节点等效注入功率法处理网络中的TCSC支路,建立了计及TCSC的潮流计算数学模型,并以TCSC所在线路的有功功率为控制目标进行潮流计算。通过潮流结果分析,可以证明该计算方法能够将TCSC的影响考虑到潮流计算中。在采用牛顿-拉夫逊法进行求解时,含TCSC的潮流计算与普通潮流区别不大,编程时做一下改动即可。通过比较,可以得出了在不同的线路安装TCSC后得到不同的潮流结果的结论,并对TCSC的最佳安装地点问题进行简单讨论。IEEE 4节点系统和IEEE14节点系统的仿真验证了该计算方法的有效性。编程采用MATLAB语言,利用稀疏矩阵潮流算法形成导纳矩阵则节省了存储空间,加快了运算速度。

Research on Power Flow Calculation of the Power System Containing TCSC

The power flow calculation containing TCSC is based on the conventional flow calculation.In order to find the flow calculation method which can fully consider the influence of the FACTS elements in the power system,we can establish a mathematical model of power flow containing TCSC according to work principle and mathematical model of TCSC,adopt the node equivalent power injection method to deal with the TCSC branch in network,and the flow calculation with the active power in TCSC line for control target.Through the trend analysis of the results,we can prove the calculation method in this paper has considered the influence of TCSC.When we solve the model by the Newton method,the low calculation including TCSC is Similar to the common low calculation,we just need to do little change.Meanwhile,through the trend analysis of the results we have the conclusion of the different line installed TCSC for the different results,and make a simple discussion about the question where is the best installation location of TCSC.Through the calculation of IEEE 4 node system and IEEE 14 node system,the reliability of the algorithm was verified.The programming based on MATLAB language,using sparse matrix flow algorithm to form admittance matrix,saves storage space,quicken the operation speed.