Due to the pattern of growth for electricity consumption, there is a need for developing power networks and transmission lines. The power transmission capacity of lines is limited due to a host of factors. Thus, these lines need series and parallel compensations to reduce losses, increase efficiency, and promote system security. In this paper, flexible alternating current transmission system (FACTS) devices including static VAR compensators (SVC) as parallel compensators, thyristor-controlled series compensation (TCSC) as a series compensator, and high-voltage direct current (HVDC) bonding are modeled. In addition, comprehensive modeling of the simultaneous application of these three devices for load flow is performed, and the effects of these types of compensations are compared. The obtained comprehensive model was implemented on MATLAB software using the Newton–Raphson method on two 9-bus WSCC and 5-bus test system. In this case, the calculation speed and convergence were reduced when compared to applying devices individually due to the increase in equations and the addition of new terms to the load flow equations. Furthermore, more losses were observed in this model, which can probably be improved using an optimal power flow and optimal placement of the devices in the network.

由于电力消费的增长模式，需要发展电力网络和输电线路。由于多种因素，线路的输电能力受到限制。因此，这些线路需要串联和并联补偿以减少损耗、提高效率并促进系统安全。在本文中，对包括作为并联补偿器的静态无功补偿器 (SVC)、作为串联补偿器的晶闸管控制的串联补偿 (TCSC) 和高压直流 (HVDC) 连接的柔性交流输电系统 (FACTS) 设备进行建模。此外，还对这三种装置同时应用于潮流的综合建模，并比较了这些类型的补偿效果。获得的综合模型在两个 9 总线 WSCC 和 5 总线测试系统上使用 Newton-Raphson 方法在 MATLAB 软件上实现。在这种情况下，与单独应用设备相比，由于方程的增加和向潮流方程添加了新项，计算速度和收敛性有所降低。此外，在该模型中观察到更多损耗，这可能可以通过使用最佳功率流和网络中设备的最佳放置来改善。